Add RangeGenerator

docs/generators.md

@@ -33,9 +33,10 @@ Catch2's provided generator functionality consists of three parts,
 
 * `GENERATE` macro,  that serves to integrate generator expression with
 a test case,
-* 2 fundamental generators
+* 3 fundamental generators
   * `ValueGenerator<T>` -- contains only single element
   * `ValuesGenerator<T>` -- contains multiple elements
+  * `RangeGenerator<T>` -- generates all values between `start` and `end`
 * 4 generic generators that modify other generators
   * `FilterGenerator<T, Predicate>` -- filters out elements from a generator
   for which the predicate returns "false"
@@ -52,6 +53,8 @@ type, making their usage much nicer. These are
 
 * `value(T&&)` for `ValueGenerator<T>`
 * `values(std::initializer_list<T>)` for `ValuesGenerator<T>`
+* `range(start, end)` for `RangeGenerator<T>` with a step size of `1` 
+* `range(start, end, step)` for `RangeGenerator<T>` with a custom step size
 * `filter(predicate, GeneratorWrapper<T>&&)` for `FilterGenerator<T, Predicate>`
 * `take(count, GeneratorWrapper<T>&&)` for `TakeGenerator<T>`
 * `repeat(repeats, GeneratorWrapper<T>&&)` for `RepeatGenerator<T>`

include/internal/catch_generators.hpp

@@ -349,6 +349,51 @@ namespace Generators {
         );
     }
 
+    template <typename T>
+    class RangeGenerator final : public IGenerator<T> {
+        T m_current;
+        T m_end;
+        T m_step;
+        bool m_positive;
+
+    public:
+        RangeGenerator(T const& start, T const& end, T const& step):
+            m_current(start),
+            m_end(end),
+            m_step(step),
+            m_positive(m_step > T(0))
+        {
+            assert(m_current != m_end && "Range start and end cannot be equal");
+            assert(m_step != T(0) && "Step size cannot be zero");
+            assert(((m_positive && m_current <= m_end) || (!m_positive && m_current >= m_end)) && "Step moves away from end");
+        }
+
+        RangeGenerator(T const& start, T const& end):
+            RangeGenerator(start, end, (start < end) ? T(1) : T(-1))
+        {}
+
+        T const& get() const override {
+            return m_current;
+        }
+
+        bool next() override {
+            m_current += m_step;
+            return (m_positive) ? (m_current < m_end) : (m_current > m_end);
+        }
+    };
+
+    template <typename T>
+    GeneratorWrapper<T> range(T const& start, T const& end, T const& step) {
+        static_assert(std::is_integral<T>::value && !std::is_same<T, bool>::value, "Type must be an integer");
+        return GeneratorWrapper<T>(pf::make_unique<RangeGenerator<T>>(start, end, step));
+    }
+
+    template <typename T>
+    GeneratorWrapper<T> range(T const& start, T const& end) {
+        static_assert(std::is_integral<T>::value && !std::is_same<T, bool>::value, "Type must be an integer");
+        return GeneratorWrapper<T>(pf::make_unique<RangeGenerator<T>>(start, end));
+    }
+
     auto acquireGeneratorTracker( SourceLineInfo const& lineInfo ) -> IGeneratorTracker&;
 
     template<typename L>

projects/SelfTest/Baselines/compact.sw.approved.txt

@@ -491,6 +491,74 @@ GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
 GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
 GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 3 for: 3 == 3
 GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -2 for: -2 == -2
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 0 for: 0 == 0
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 1 for: 1 == 1
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 1 for: 1 == 1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 0 for: 0 == 0
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -7 for: -7 == -7
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -4 for: -4 == -4
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -7 for: -7 == -7
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -4 for: -4 == -4
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -7 for: -7 == -7
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -4 for: -4 == -4
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 5 for: 5 == 5
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 5 for: 5 == 5
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -4 for: -4 == -4
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 5 for: 5 == 5
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -4 for: -4 == -4
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 5 for: 5 == 5
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == 2 for: 2 == 2
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -1 for: -1 == -1
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -4 for: -4 == -4
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.next() for: true
+GeneratorsImpl.tests.cpp:<line number>: passed: gen.get() == -7 for: -7 == -7
+GeneratorsImpl.tests.cpp:<line number>: passed: !(gen.next()) for: !false
 Approx.tests.cpp:<line number>: passed: d >= Approx( 1.22 ) for: 1.23 >= Approx( 1.22 )
 Approx.tests.cpp:<line number>: passed: d >= Approx( 1.23 ) for: 1.23 >= Approx( 1.23 )
 Approx.tests.cpp:<line number>: passed: !(d >= Approx( 1.24 )) for: !(1.23 >= Approx( 1.24 ))

projects/SelfTest/Baselines/console.std.approved.txt

@@ -1175,5 +1175,5 @@ due to unexpected exception with message:
 
 ===============================================================================
 test cases:  245 |  185 passed |  56 failed |  4 failed as expected
-assertions: 1297 | 1161 passed | 115 failed | 21 failed as expected
+assertions: 1365 | 1229 passed | 115 failed | 21 failed as expected
 

projects/SelfTest/Baselines/console.sw.approved.txt

@@ -3648,6 +3648,424 @@ GeneratorsImpl.tests.cpp:<line number>: PASSED:
 with expansion:
   !false
 
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Positive auto step
+  Integer
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -2 )
+with expansion:
+  -2 == -2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 0 )
+with expansion:
+  0 == 0
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 1 )
+with expansion:
+  1 == 1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Negative auto step
+  Integer
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 1 )
+with expansion:
+  1 == 1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 0 )
+with expansion:
+  0 == 0
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Positive manual step
+  Integer
+  Exact
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -7 )
+with expansion:
+  -7 == -7
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -4 )
+with expansion:
+  -4 == -4
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Positive manual step
+  Integer
+  Slightly over end
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -7 )
+with expansion:
+  -7 == -7
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -4 )
+with expansion:
+  -4 == -4
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Positive manual step
+  Integer
+  Slightly under end
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -7 )
+with expansion:
+  -7 == -7
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -4 )
+with expansion:
+  -4 == -4
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 5 )
+with expansion:
+  5 == 5
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Negative manual step
+  Integer
+  Exact
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 5 )
+with expansion:
+  5 == 5
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -4 )
+with expansion:
+  -4 == -4
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Negative manual step
+  Integer
+  Slightly over end
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 5 )
+with expansion:
+  5 == 5
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -4 )
+with expansion:
+  -4 == -4
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
+-------------------------------------------------------------------------------
+Generators internals
+  Range
+  Negative manual step
+  Integer
+  Slightly under end
+-------------------------------------------------------------------------------
+GeneratorsImpl.tests.cpp:<line number>
+...............................................................................
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 5 )
+with expansion:
+  5 == 5
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == 2 )
+with expansion:
+  2 == 2
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -1 )
+with expansion:
+  -1 == -1
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -4 )
+with expansion:
+  -4 == -4
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.next() )
+with expansion:
+  true
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE( gen.get() == -7 )
+with expansion:
+  -7 == -7
+
+GeneratorsImpl.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( gen.next() )
+with expansion:
+  !false
+
 -------------------------------------------------------------------------------
 Greater-than inequalities with different epsilons
 -------------------------------------------------------------------------------
@@ -10156,5 +10574,5 @@ Misc.tests.cpp:<line number>: PASSED:
 
 ===============================================================================
 test cases:  245 |  172 passed |  69 failed |  4 failed as expected
-assertions: 1311 | 1161 passed | 129 failed | 21 failed as expected
+assertions: 1379 | 1229 passed | 129 failed | 21 failed as expected
 

projects/SelfTest/Baselines/junit.sw.approved.txt

@@ -4,7 +4,7 @@
     <property name="random-seed" value="1"/>
   </properties>
 loose text artifact
-  <testsuite name="<exe-name>" errors="17" failures="113" tests="1312" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
+  <testsuite name="<exe-name>" errors="17" failures="113" tests="1380" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
     <testcase classname="<exe-name>.global" name="# A test name that starts with a #" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="#1005: Comparing pointer to int and long (NULL can be either on various systems)" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="#1027" time="{duration}"/>
@@ -359,6 +359,14 @@ Message.tests.cpp:<line number>
     <testcase classname="<exe-name>.global" name="Generators internals/Map" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="Generators internals/Repeat/Singular repeat" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="Generators internals/Repeat/Actual repeat" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Positive auto step/Integer" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Negative auto step/Integer" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Positive manual step/Integer/Exact" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Positive manual step/Integer/Slightly over end" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Positive manual step/Integer/Slightly under end" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Negative manual step/Integer/Exact" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Negative manual step/Integer/Slightly over end" time="{duration}"/>
+    <testcase classname="<exe-name>.global" name="Generators internals/Range/Negative manual step/Integer/Slightly under end" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="Greater-than inequalities with different epsilons" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="INFO and WARN do not abort tests" time="{duration}"/>
     <testcase classname="<exe-name>.global" name="INFO gets logged on failure" time="{duration}">

projects/SelfTest/Baselines/xml.sw.approved.txt

@@ -4449,6 +4449,640 @@
         </Section>
         <OverallResults successes="12" failures="0" expectedFailures="0"/>
       </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Positive auto step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == -2
+              </Original>
+              <Expanded>
+                -2 == -2
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.next()
+              </Original>
+              <Expanded>
+                true
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == -1
+              </Original>
+              <Expanded>
+                -1 == -1
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.next()
+              </Original>
+              <Expanded>
+                true
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == 0
+              </Original>
+              <Expanded>
+                0 == 0
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.next()
+              </Original>
+              <Expanded>
+                true
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == 1
+              </Original>
+              <Expanded>
+                1 == 1
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                !(gen.next())
+              </Original>
+              <Expanded>
+                !false
+              </Expanded>
+            </Expression>
+            <OverallResults successes="8" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="8" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="8" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Negative auto step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == 2
+              </Original>
+              <Expanded>
+                2 == 2
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.next()
+              </Original>
+              <Expanded>
+                true
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == 1
+              </Original>
+              <Expanded>
+                1 == 1
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.next()
+              </Original>
+              <Expanded>
+                true
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == 0
+              </Original>
+              <Expanded>
+                0 == 0
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.next()
+              </Original>
+              <Expanded>
+                true
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                gen.get() == -1
+              </Original>
+              <Expanded>
+                -1 == -1
+              </Expanded>
+            </Expression>
+            <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Original>
+                !(gen.next())
+              </Original>
+              <Expanded>
+                !false
+              </Expanded>
+            </Expression>
+            <OverallResults successes="8" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="8" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="8" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Positive manual step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Section name="Exact" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -7
+                </Original>
+                <Expanded>
+                  -7 == -7
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -4
+                </Original>
+                <Expanded>
+                  -4 == -4
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -1
+                </Original>
+                <Expanded>
+                  -1 == -1
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 2
+                </Original>
+                <Expanded>
+                  2 == 2
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  !(gen.next())
+                </Original>
+                <Expanded>
+                  !false
+                </Expanded>
+              </Expression>
+              <OverallResults successes="8" failures="0" expectedFailures="0"/>
+            </Section>
+            <OverallResults successes="8" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="8" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="8" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Positive manual step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Section name="Slightly over end" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -7
+                </Original>
+                <Expanded>
+                  -7 == -7
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -4
+                </Original>
+                <Expanded>
+                  -4 == -4
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -1
+                </Original>
+                <Expanded>
+                  -1 == -1
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 2
+                </Original>
+                <Expanded>
+                  2 == 2
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  !(gen.next())
+                </Original>
+                <Expanded>
+                  !false
+                </Expanded>
+              </Expression>
+              <OverallResults successes="8" failures="0" expectedFailures="0"/>
+            </Section>
+            <OverallResults successes="8" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="8" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="8" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Positive manual step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Section name="Slightly under end" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -7
+                </Original>
+                <Expanded>
+                  -7 == -7
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -4
+                </Original>
+                <Expanded>
+                  -4 == -4
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -1
+                </Original>
+                <Expanded>
+                  -1 == -1
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 2
+                </Original>
+                <Expanded>
+                  2 == 2
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 5
+                </Original>
+                <Expanded>
+                  5 == 5
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  !(gen.next())
+                </Original>
+                <Expanded>
+                  !false
+                </Expanded>
+              </Expression>
+              <OverallResults successes="10" failures="0" expectedFailures="0"/>
+            </Section>
+            <OverallResults successes="10" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="10" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="10" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Negative manual step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Section name="Exact" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 5
+                </Original>
+                <Expanded>
+                  5 == 5
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 2
+                </Original>
+                <Expanded>
+                  2 == 2
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -1
+                </Original>
+                <Expanded>
+                  -1 == -1
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -4
+                </Original>
+                <Expanded>
+                  -4 == -4
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  !(gen.next())
+                </Original>
+                <Expanded>
+                  !false
+                </Expanded>
+              </Expression>
+              <OverallResults successes="8" failures="0" expectedFailures="0"/>
+            </Section>
+            <OverallResults successes="8" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="8" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="8" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Negative manual step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Section name="Slightly over end" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 5
+                </Original>
+                <Expanded>
+                  5 == 5
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 2
+                </Original>
+                <Expanded>
+                  2 == 2
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -1
+                </Original>
+                <Expanded>
+                  -1 == -1
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -4
+                </Original>
+                <Expanded>
+                  -4 == -4
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  !(gen.next())
+                </Original>
+                <Expanded>
+                  !false
+                </Expanded>
+              </Expression>
+              <OverallResults successes="8" failures="0" expectedFailures="0"/>
+            </Section>
+            <OverallResults successes="8" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="8" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="8" failures="0" expectedFailures="0"/>
+      </Section>
+      <Section name="Range" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+        <Section name="Negative manual step" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+          <Section name="Integer" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+            <Section name="Slightly under end" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 5
+                </Original>
+                <Expanded>
+                  5 == 5
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == 2
+                </Original>
+                <Expanded>
+                  2 == 2
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -1
+                </Original>
+                <Expanded>
+                  -1 == -1
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -4
+                </Original>
+                <Expanded>
+                  -4 == -4
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.next()
+                </Original>
+                <Expanded>
+                  true
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  gen.get() == -7
+                </Original>
+                <Expanded>
+                  -7 == -7
+                </Expanded>
+              </Expression>
+              <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/IntrospectiveTests/GeneratorsImpl.tests.cpp" >
+                <Original>
+                  !(gen.next())
+                </Original>
+                <Expanded>
+                  !false
+                </Expanded>
+              </Expression>
+              <OverallResults successes="10" failures="0" expectedFailures="0"/>
+            </Section>
+            <OverallResults successes="10" failures="0" expectedFailures="0"/>
+          </Section>
+          <OverallResults successes="10" failures="0" expectedFailures="0"/>
+        </Section>
+        <OverallResults successes="10" failures="0" expectedFailures="0"/>
+      </Section>
       <OverallResult success="true"/>
     </TestCase>
     <TestCase name="Greater-than inequalities with different epsilons" tags="[Approx]" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
@@ -12151,7 +12785,7 @@ loose text artifact
       </Section>
       <OverallResult success="true"/>
     </TestCase>
-    <OverallResults successes="1161" failures="130" expectedFailures="21"/>
+    <OverallResults successes="1229" failures="130" expectedFailures="21"/>
   </Group>
-  <OverallResults successes="1161" failures="129" expectedFailures="21"/>
+  <OverallResults successes="1229" failures="129" expectedFailures="21"/>
 </Catch>

projects/SelfTest/IntrospectiveTests/GeneratorsImpl.tests.cpp

@@ -99,5 +99,111 @@ TEST_CASE("Generators internals", "[generators][internals]") {
             REQUIRE_FALSE(gen.next());
         }
     }
+    SECTION("Range") {
+        SECTION("Positive auto step") {
+            SECTION("Integer") {
+                auto gen = range(-2, 2);
+                REQUIRE(gen.get() == -2);
+                REQUIRE(gen.next());
+                REQUIRE(gen.get() == -1);
+                REQUIRE(gen.next());
+                REQUIRE(gen.get() == 0);
+                REQUIRE(gen.next());
+                REQUIRE(gen.get() == 1);
+                REQUIRE_FALSE(gen.next());
+            }
+        }
+        SECTION("Negative auto step") {
+            SECTION("Integer") {
+                auto gen = range(2, -2);
+                REQUIRE(gen.get() == 2);
+                REQUIRE(gen.next());
+                REQUIRE(gen.get() == 1);
+                REQUIRE(gen.next());
+                REQUIRE(gen.get() == 0);
+                REQUIRE(gen.next());
+                REQUIRE(gen.get() == -1);
+                REQUIRE_FALSE(gen.next());
+            }
+        }
+        SECTION("Positive manual step") {
+            SECTION("Integer") {
+                SECTION("Exact") {
+                    auto gen = range(-7, 5, 3);
+                    REQUIRE(gen.get() == -7);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -4);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -1);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 2);
+                    REQUIRE_FALSE(gen.next());
+                }
+                SECTION("Slightly over end") {
+                    auto gen = range(-7, 4, 3);
+                    REQUIRE(gen.get() == -7);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -4);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -1);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 2);
+                    REQUIRE_FALSE(gen.next());
+                }
+                SECTION("Slightly under end") {
+                    auto gen = range(-7, 6, 3);
+                    REQUIRE(gen.get() == -7);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -4);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -1);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 2);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 5);
+                    REQUIRE_FALSE(gen.next());
+                }
+            }
+        }
+        SECTION("Negative manual step") {
+            SECTION("Integer") {
+                SECTION("Exact") {
+                    auto gen = range(5, -7, -3);
+                    REQUIRE(gen.get() == 5);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 2);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -1);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -4);
+                    REQUIRE_FALSE(gen.next());
+                }
+                SECTION("Slightly over end") {
+                    auto gen = range(5, -6, -3);
+                    REQUIRE(gen.get() == 5);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 2);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -1);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -4);
+                    REQUIRE_FALSE(gen.next());
+                }
+                SECTION("Slightly under end") {
+                    auto gen = range(5, -8, -3);
+                    REQUIRE(gen.get() == 5);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == 2);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -1);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -4);
+                    REQUIRE(gen.next());
+                    REQUIRE(gen.get() == -7);
+                    REQUIRE_FALSE(gen.next());
+                }
+            }
+        }
+    }
 
 }