Add support for bitwise xor to the decomposer

include/internal/catch_decomposer.h

@@ -208,6 +208,10 @@ namespace Catch {
         auto operator & (RhsT const& rhs) -> BinaryExpr<LhsT, RhsT const&> const {
             return { static_cast<bool>(m_lhs & rhs), m_lhs, "&", rhs };
         }
+        template <typename RhsT>
+        auto operator ^ (RhsT const& rhs) -> BinaryExpr<LhsT, RhsT const&> const {
+            return { static_cast<bool>(m_lhs ^ rhs), m_lhs, "^", rhs };
+        }
 
         template<typename RhsT>
         auto operator && ( RhsT const& ) -> BinaryExpr<LhsT, RhsT const&> const {

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

@@ -247,6 +247,8 @@ Matchers.tests.cpp:<line number>: passed: "This wouldn't pass", !Predicate<std::
 Compilation.tests.cpp:<line number>: passed: lhs | rhs for: Val: 1 | Val: 2
 Compilation.tests.cpp:<line number>: passed: !(lhs & rhs) for: !(Val: 1 & Val: 2)
 Compilation.tests.cpp:<line number>: passed: HasBitOperators{ 1 } & HasBitOperators{ 1 } for: Val: 1 & Val: 1
+Compilation.tests.cpp:<line number>: passed: lhs ^ rhs for: Val: 1 ^ Val: 2
+Compilation.tests.cpp:<line number>: passed: !(lhs ^ lhs) for: !(Val: 1 ^ Val: 1)
 Tricky.tests.cpp:<line number>: passed: true
 Tricky.tests.cpp:<line number>: passed: true
 Tricky.tests.cpp:<line number>: passed: true

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

@@ -1381,5 +1381,5 @@ due to unexpected exception with message:
 
 ===============================================================================
 test cases:  310 |  236 passed |  70 failed |  4 failed as expected
-assertions: 1699 | 1547 passed | 131 failed | 21 failed as expected
+assertions: 1701 | 1549 passed | 131 failed | 21 failed as expected
 

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

@@ -1955,6 +1955,16 @@ Compilation.tests.cpp:<line number>: PASSED:
 with expansion:
   Val: 1 & Val: 1
 
+Compilation.tests.cpp:<line number>: PASSED:
+  REQUIRE( lhs ^ rhs )
+with expansion:
+  Val: 1 ^ Val: 2
+
+Compilation.tests.cpp:<line number>: PASSED:
+  REQUIRE_FALSE( lhs ^ lhs )
+with expansion:
+  !(Val: 1 ^ Val: 1)
+
 -------------------------------------------------------------------------------
 Assertions then sections
 -------------------------------------------------------------------------------
@@ -13564,5 +13574,5 @@ Misc.tests.cpp:<line number>: PASSED:
 
 ===============================================================================
 test cases:  310 |  220 passed |  86 failed |  4 failed as expected
-assertions: 1716 | 1547 passed | 148 failed | 21 failed as expected
+assertions: 1718 | 1549 passed | 148 failed | 21 failed as expected
 

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

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <testsuitesloose text artifact
 >
-  <testsuite name="<exe-name>" errors="17" failures="132" tests="1717" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
+  <testsuite name="<exe-name>" errors="17" failures="132" tests="1719" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
     <properties>
       <property name="filters" value="~[!nonportable]~[!benchmark]~[approvals]"/>
       <property name="random-seed" value="1"/>

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

@@ -2202,6 +2202,22 @@ Nor would this
           Val: 1 & Val: 1
         </Expanded>
       </Expression>
+      <Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Compilation.tests.cpp" >
+        <Original>
+          lhs ^ rhs
+        </Original>
+        <Expanded>
+          Val: 1 ^ Val: 2
+        </Expanded>
+      </Expression>
+      <Expression success="true" type="REQUIRE_FALSE" filename="projects/<exe-name>/UsageTests/Compilation.tests.cpp" >
+        <Original>
+          !(lhs ^ lhs)
+        </Original>
+        <Expanded>
+          !(Val: 1 ^ Val: 1)
+        </Expanded>
+      </Expression>
       <OverallResult success="true"/>
     </TestCase>
     <TestCase name="Assertions then sections" tags="[Tricky]" filename="projects/<exe-name>/UsageTests/Tricky.tests.cpp" >
@@ -16239,7 +16255,7 @@ loose text artifact
       </Section>
       <OverallResult success="true"/>
     </TestCase>
-    <OverallResults successes="1547" failures="149" expectedFailures="21"/>
+    <OverallResults successes="1549" failures="149" expectedFailures="21"/>
   </Group>
-  <OverallResults successes="1547" failures="148" expectedFailures="21"/>
+  <OverallResults successes="1549" failures="148" expectedFailures="21"/>
 </Catch>

projects/SelfTest/UsageTests/Compilation.tests.cpp

@@ -244,6 +244,9 @@ namespace {
         friend HasBitOperators operator& (HasBitOperators lhs, HasBitOperators rhs) {
             return { lhs.value & rhs.value };
         }
+        friend HasBitOperators operator^ (HasBitOperators lhs, HasBitOperators rhs) {
+            return { lhs.value ^ rhs.value };
+        }
         explicit operator bool() const {
             return !!value;
         }
@@ -260,5 +263,7 @@ TEST_CASE("Assertion macros support bit operators and bool conversions", "[compi
     REQUIRE(lhs | rhs);
     REQUIRE_FALSE(lhs & rhs);
     REQUIRE(HasBitOperators{ 1 } & HasBitOperators{ 1 });
+    REQUIRE(lhs ^ rhs);
+    REQUIRE_FALSE(lhs ^ lhs);
 }