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Add float/int literal for Approx

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This commit is contained in:
Henry Schreiner 2018-05-21 15:42:40 +02:00 committed by Martin Hořeňovský
parent d6c7392b24
commit 283e2e6d41
8 changed files with 177 additions and 8 deletions
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16
include/internal/catch_approx.cpp
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@ -35,6 +35,13 @@ namespace Detail {
return Approx( 0 );
}
Approx Approx::operator-() const {
auto temp(*this);
temp.m_value = -temp.m_value;
return temp;
}
std::string Approx::toString() const {
ReusableStringStream rss;
rss << "Approx( " << ::Catch::Detail::stringify( m_value ) << " )";
@ -49,6 +56,15 @@ namespace Detail {
} // end namespace Detail
namespace literals {
Detail::Approx operator "" _a(long double val) {
return Detail::Approx(val);
}
Detail::Approx operator "" _a(unsigned long long val) {
return Detail::Approx(val);
}
} // end namespace literals
std::string StringMaker<Catch::Detail::Approx>::convert(Catch::Detail::Approx const& value) {
return value.toString();
}

9
include/internal/catch_approx.h
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@ -25,6 +25,8 @@ namespace Detail {
static Approx custom();
Approx operator-() const;
template <typename T, typename = typename std::enable_if<std::is_constructible<double, T>::value>::type>
Approx operator()( T const& value ) {
Approx approx( static_cast<double>(value) );
@ -121,7 +123,12 @@ namespace Detail {
double m_scale;
double m_value;
};
}
} // end namespace Detail
namespace literals {
Detail::Approx operator "" _a(long double val);
Detail::Approx operator "" _a(unsigned long long val);
} // end namespace literals
template<>
struct StringMaker<Catch::Detail::Approx> {

8
projects/SelfTest/Baselines/compact.sw.approved.txt
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@ -60,6 +60,12 @@ Class.tests.cpp:<line number>: failed: s == "world" for: "hello" == "world"
Class.tests.cpp:<line number>: passed: s == "hello" for: "hello" == "hello"
Class.tests.cpp:<line number>: failed: m_a == 2 for: 1 == 2
Class.tests.cpp:<line number>: passed: m_a == 1 for: 1 == 1
Approx.tests.cpp:<line number>: passed: d == 1.23_a for: 1.23 == Approx( 1.23 )
Approx.tests.cpp:<line number>: passed: d != 1.22_a for: 1.23 != Approx( 1.22 )
Approx.tests.cpp:<line number>: passed: -d == -1.23_a for: -1.23 == Approx( -1.23 )
Approx.tests.cpp:<line number>: passed: d == 1.2_a .epsilon(.1) for: 1.23 == Approx( 1.2 )
Approx.tests.cpp:<line number>: passed: d != 1.2_a .epsilon(.001) for: 1.23 != Approx( 1.2 )
Approx.tests.cpp:<line number>: passed: d == 1_a .epsilon(.3) for: 1.23 == Approx( 1.0 )
Misc.tests.cpp:<line number>: passed: with 1 message: 'that's not flying - that's failing in style'
Misc.tests.cpp:<line number>: failed: explicitly with 1 message: 'to infinity and beyond'
Tricky.tests.cpp:<line number>: failed: &o1 == &o2 for: 0x<hex digits> == 0x<hex digits>
@ -613,6 +619,8 @@ A string sent to stderr via clog
Approx.tests.cpp:<line number>: passed: d == Approx( 1.23 ) for: 1.23 == Approx( 1.23 )
Approx.tests.cpp:<line number>: passed: d != Approx( 1.22 ) for: 1.23 != Approx( 1.22 )
Approx.tests.cpp:<line number>: passed: d != Approx( 1.24 ) for: 1.23 != Approx( 1.24 )
Approx.tests.cpp:<line number>: passed: d == 1.23_a for: 1.23 == Approx( 1.23 )
Approx.tests.cpp:<line number>: passed: d != 1.22_a for: 1.23 != Approx( 1.22 )
Approx.tests.cpp:<line number>: passed: Approx( d ) == 1.23 for: Approx( 1.23 ) == 1.23
Approx.tests.cpp:<line number>: passed: Approx( d ) != 1.22 for: Approx( 1.23 ) != 1.22
Approx.tests.cpp:<line number>: passed: Approx( d ) != 1.24 for: Approx( 1.23 ) != 1.24

4
projects/SelfTest/Baselines/console.std.approved.txt
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@ -1096,6 +1096,6 @@ due to unexpected exception with message:
Why would you throw a std::string?
===============================================================================
test cases: 207 | 154 passed | 49 failed | 4 failed as expected
assertions: 1073 | 944 passed | 108 failed | 21 failed as expected
test cases: 208 | 155 passed | 49 failed | 4 failed as expected
assertions: 1081 | 952 passed | 108 failed | 21 failed as expected

58
projects/SelfTest/Baselines/console.sw.approved.txt
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@ -535,6 +535,48 @@ PASSED:
with expansion:
1 == 1
-------------------------------------------------------------------------------
A comparison that uses literals instead of the normal constructor
-------------------------------------------------------------------------------
Approx.tests.cpp:<line number>
...............................................................................
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d == 1.23_a )
with expansion:
1.23 == Approx( 1.23 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d != 1.22_a )
with expansion:
1.23 != Approx( 1.22 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( -d == -1.23_a )
with expansion:
-1.23 == Approx( -1.23 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d == 1.2_a .epsilon(.1) )
with expansion:
1.23 == Approx( 1.2 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d != 1.2_a .epsilon(.001) )
with expansion:
1.23 != Approx( 1.2 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d == 1_a .epsilon(.3) )
with expansion:
1.23 == Approx( 1.0 )
-------------------------------------------------------------------------------
A couple of nested sections followed by a failure
Outer
@ -4860,6 +4902,18 @@ PASSED:
with expansion:
1.23 != Approx( 1.24 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d == 1.23_a )
with expansion:
1.23 == Approx( 1.23 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( d != 1.22_a )
with expansion:
1.23 != Approx( 1.22 )
Approx.tests.cpp:<line number>:
PASSED:
REQUIRE( Approx( d ) == 1.23 )
@ -9098,6 +9152,6 @@ Misc.tests.cpp:<line number>:
PASSED:
===============================================================================
test cases: 207 | 141 passed | 62 failed | 4 failed as expected
assertions: 1087 | 944 passed | 122 failed | 21 failed as expected
test cases: 208 | 142 passed | 62 failed | 4 failed as expected
assertions: 1095 | 952 passed | 122 failed | 21 failed as expected

3
projects/SelfTest/Baselines/junit.sw.approved.txt
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@ -1,7 +1,7 @@
<?xml version="1.0" encoding="UTF-8"?>
<testsuitesloose text artifact
>
<testsuite name="<exe-name>" errors="17" failures="106" tests="1088" hostname="tbd" time="{duration}" timestamp="{iso8601-timestamp}">
<testsuite name="<exe-name>" errors="17" failures="106" tests="1096" 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}"/>
@ -81,6 +81,7 @@ Class.tests.cpp:<line number>
</failure>
</testcase>
<testcase classname="<exe-name>.Fixture" name="A TEST_CASE_METHOD based test run that succeeds" time="{duration}"/>
<testcase classname="<exe-name>.global" name="A comparison that uses literals instead of the normal constructor" time="{duration}"/>
<testcase classname="<exe-name>.global" name="A couple of nested sections followed by a failure" time="{duration}">
<failure type="FAIL">
to infinity and beyond

71
projects/SelfTest/Baselines/xml.sw.approved.txt
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@ -554,6 +554,57 @@
</Expression>
<OverallResult success="true"/>
</TestCase>
<TestCase name="A comparison that uses literals instead of the normal constructor" tags="[Approx]" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d == 1.23_a
</Original>
<Expanded>
1.23 == Approx( 1.23 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d != 1.22_a
</Original>
<Expanded>
1.23 != Approx( 1.22 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
-d == -1.23_a
</Original>
<Expanded>
-1.23 == Approx( -1.23 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d == 1.2_a .epsilon(.1)
</Original>
<Expanded>
1.23 == Approx( 1.2 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d != 1.2_a .epsilon(.001)
</Original>
<Expanded>
1.23 != Approx( 1.2 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d == 1_a .epsilon(.3)
</Original>
<Expanded>
1.23 == Approx( 1.0 )
</Expanded>
</Expression>
<OverallResult success="true"/>
</TestCase>
<TestCase name="A couple of nested sections followed by a failure" tags="[.][failing]" filename="projects/<exe-name>/UsageTests/Misc.tests.cpp" >
<Section name="Outer" filename="projects/<exe-name>/UsageTests/Misc.tests.cpp" >
<Section name="Inner" filename="projects/<exe-name>/UsageTests/Misc.tests.cpp" >
@ -5580,6 +5631,22 @@ A string sent to stderr via clog
1.23 != Approx( 1.24 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d == 1.23_a
</Original>
<Expanded>
1.23 == Approx( 1.23 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
d != 1.22_a
</Original>
<Expanded>
1.23 != Approx( 1.22 )
</Expanded>
</Expression>
<Expression success="true" type="REQUIRE" filename="projects/<exe-name>/UsageTests/Approx.tests.cpp" >
<Original>
Approx( d ) == 1.23
@ -10024,7 +10091,7 @@ loose text artifact
</Section>
<OverallResult success="true"/>
</TestCase>
<OverallResults successes="944" failures="123" expectedFailures="21"/>
<OverallResults successes="952" failures="123" expectedFailures="21"/>
</Group>
<OverallResults successes="944" failures="122" expectedFailures="21"/>
<OverallResults successes="952" failures="122" expectedFailures="21"/>
</Catch>

16
projects/SelfTest/UsageTests/Approx.tests.cpp
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@ -33,8 +33,21 @@ namespace { namespace ApproxTests {
#endif
using namespace Catch::literals;
///////////////////////////////////////////////////////////////////////////////
TEST_CASE( "A comparison that uses literals instead of the normal constructor", "[Approx]" ) {
double d = 1.23;
REQUIRE( d == 1.23_a );
REQUIRE( d != 1.22_a );
REQUIRE( -d == -1.23_a );
REQUIRE( d == 1.2_a .epsilon(.1) );
REQUIRE( d != 1.2_a .epsilon(.001) );
REQUIRE( d == 1_a .epsilon(.3) );
}
TEST_CASE( "Some simple comparisons between doubles", "[Approx]" ) {
double d = 1.23;
@ -42,6 +55,9 @@ TEST_CASE( "Some simple comparisons between doubles", "[Approx]" ) {
REQUIRE( d != Approx( 1.22 ) );
REQUIRE( d != Approx( 1.24 ) );
REQUIRE( d == 1.23_a );
REQUIRE( d != 1.22_a );
REQUIRE( Approx( d ) == 1.23 );
REQUIRE( Approx( d ) != 1.22 );
REQUIRE( Approx( d ) != 1.24 );