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Add ULP and margin matcher

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Closes #1074
This commit is contained in:
Martin Hořeňovský
2017-11-10 18:14:42 +01:00
parent 24e6d5fa33
commit 0b1f1b1003
11 changed files with 797 additions and 8 deletions
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61
projects/SelfTest/MatchersTests.cpp
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@@ -226,6 +226,67 @@ TEST_CASE("Exception matchers that fail", "[matchers][exceptions][!throws][.fail
}
}
TEST_CASE("Floating point matchers: float", "[matchers][floating-point]") {
SECTION("Margin") {
REQUIRE_THAT(1.f, WithinAbs(1.f, 0));
REQUIRE_THAT(0.f, WithinAbs(1.f, 1));
REQUIRE_THAT(0.f, !WithinAbs(1.f, 0.99f));
REQUIRE_THAT(0.f, !WithinAbs(1.f, 0.99f));
REQUIRE_THAT(0.f, WithinAbs(-0.f, 0));
REQUIRE_THAT(NAN, !WithinAbs(NAN, 0));
}
SECTION("ULPs") {
REQUIRE_THAT(1.f, WithinULP(1.f, 0));
REQUIRE_THAT(std::nextafter(1.f, 2.f), WithinULP(1.f, 1));
REQUIRE_THAT(std::nextafter(1.f, 0.f), WithinULP(1.f, 1));
REQUIRE_THAT(std::nextafter(1.f, 2.f), !WithinULP(1.f, 0));
REQUIRE_THAT(1.f, WithinULP(1.f, 0));
REQUIRE_THAT(-0.f, WithinULP(0.f, 0));
REQUIRE_THAT(NAN, !WithinULP(NAN, 123));
}
SECTION("Composed") {
REQUIRE_THAT(1.f, WithinAbs(1.f, 0.5) || WithinULP(1.f, 1));
REQUIRE_THAT(1.f, WithinAbs(2.f, 0.5) || WithinULP(1.f, 0));
REQUIRE_THAT(NAN, !(WithinAbs(NAN, 100) || WithinULP(NAN, 123)));
}
}
TEST_CASE("Floating point matchers: double", "[matchers][floating-point]") {
SECTION("Margin") {
REQUIRE_THAT(1., WithinAbs(1., 0));
REQUIRE_THAT(0., WithinAbs(1., 1));
REQUIRE_THAT(0., !WithinAbs(1., 0.99));
REQUIRE_THAT(0., !WithinAbs(1., 0.99));
REQUIRE_THAT(NAN, !WithinAbs(NAN, 0));
}
SECTION("ULPs") {
REQUIRE_THAT(1., WithinULP(1., 0));
REQUIRE_THAT(std::nextafter(1., 2.), WithinULP(1., 1));
REQUIRE_THAT(std::nextafter(1., 0.), WithinULP(1., 1));
REQUIRE_THAT(std::nextafter(1., 2.), !WithinULP(1., 0));
REQUIRE_THAT(1., WithinULP(1., 0));
REQUIRE_THAT(-0., WithinULP(0., 0));
REQUIRE_THAT(NAN, !WithinULP(NAN, 123));
}
SECTION("Composed") {
REQUIRE_THAT(1., WithinAbs(1., 0.5) || WithinULP(2., 1));
REQUIRE_THAT(1., WithinAbs(2., 0.5) || WithinULP(1., 0));
REQUIRE_THAT(NAN, !(WithinAbs(NAN, 100) || WithinULP(NAN, 123)));
}
}
#endif // CATCH_CONFIG_DISABLE_MATCHERS
#ifdef __clang__