mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-14 09:49:54 +01:00
cf6575576f
This commit also forbids composing lvalues of composed matchers, as per previous deprecation notice. I do not expect this to be contentious in practice, because there was a bug in that usage for years, and nobody complained.
858 lines
32 KiB
C++
858 lines
32 KiB
C++
/*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <catch2/catch_test_macros.hpp>
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#include <catch2/catch_matchers_exception.hpp>
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#include <catch2/catch_matchers_floating.h>
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#include <catch2/catch_matchers_generic.hpp>
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#include <catch2/catch_matchers_string.h>
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#include <catch2/catch_matchers_vector.h>
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#include <catch2/catch_matchers_templates.hpp>
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#include <algorithm>
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#include <cmath>
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#include <list>
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#include <sstream>
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#ifdef __clang__
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wweak-vtables"
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#pragma clang diagnostic ignored "-Wpadded"
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#endif
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namespace { namespace MatchersTests {
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#ifndef MATCHERS_TEST_HELPERS_INCLUDED // Don't compile this more than once per TU
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#define MATCHERS_TEST_HELPERS_INCLUDED
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inline const char *testStringForMatching() {
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return "this string contains 'abc' as a substring";
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}
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inline const char *testStringForMatching2() {
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return "some completely different text that contains one common word";
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}
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inline bool alwaysTrue(int) { return true; }
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inline bool alwaysFalse(int) { return false; }
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#ifdef _MSC_VER
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#pragma warning(disable:4702) // Unreachable code -- MSVC 19 (VS 2015) sees right through the indirection
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#endif
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#include <exception>
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struct SpecialException : std::exception {
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SpecialException(int i_) : i(i_) {}
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char const* what() const noexcept override {
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return "SpecialException::what";
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}
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int i;
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};
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struct DerivedException : std::exception {
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char const* what() const noexcept override {
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return "DerivedException::what";
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}
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};
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void doesNotThrow() {}
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[[noreturn]]
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void throwsSpecialException(int i) {
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throw SpecialException{i};
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}
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[[noreturn]]
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void throwsAsInt(int i) {
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throw i;
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}
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[[noreturn]]
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void throwsDerivedException() {
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throw DerivedException{};
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}
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class ExceptionMatcher : public Catch::Matchers::MatcherBase<SpecialException> {
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int m_expected;
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public:
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ExceptionMatcher(int i) : m_expected(i) {}
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bool match(SpecialException const &se) const override {
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return se.i == m_expected;
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}
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std::string describe() const override {
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std::ostringstream ss;
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ss << "special exception has value of " << m_expected;
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return ss.str();
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}
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};
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#endif
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using namespace Catch::Matchers;
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#ifdef __DJGPP__
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float nextafter(float from, float to)
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{
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return ::nextafterf(from, to);
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}
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double nextafter(double from, double to)
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{
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return ::nextafter(from, to);
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}
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#else
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using std::nextafter;
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#endif
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TEST_CASE("String matchers", "[matchers]") {
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REQUIRE_THAT(testStringForMatching(), Contains("string"));
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REQUIRE_THAT(testStringForMatching(), Contains("string", Catch::CaseSensitive::No));
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CHECK_THAT(testStringForMatching(), Contains("abc"));
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CHECK_THAT(testStringForMatching(), Contains("aBC", Catch::CaseSensitive::No));
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CHECK_THAT(testStringForMatching(), StartsWith("this"));
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CHECK_THAT(testStringForMatching(), StartsWith("THIS", Catch::CaseSensitive::No));
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CHECK_THAT(testStringForMatching(), EndsWith("substring"));
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CHECK_THAT(testStringForMatching(), EndsWith(" SuBsTrInG", Catch::CaseSensitive::No));
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}
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TEST_CASE("Contains string matcher", "[.][failing][matchers]") {
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CHECK_THAT(testStringForMatching(), Contains("not there", Catch::CaseSensitive::No));
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CHECK_THAT(testStringForMatching(), Contains("STRING"));
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}
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TEST_CASE("StartsWith string matcher", "[.][failing][matchers]") {
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CHECK_THAT(testStringForMatching(), StartsWith("This String"));
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CHECK_THAT(testStringForMatching(), StartsWith("string", Catch::CaseSensitive::No));
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}
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TEST_CASE("EndsWith string matcher", "[.][failing][matchers]") {
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CHECK_THAT(testStringForMatching(), EndsWith("Substring"));
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CHECK_THAT(testStringForMatching(), EndsWith("this", Catch::CaseSensitive::No));
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}
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TEST_CASE("Equals string matcher", "[.][failing][matchers]") {
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CHECK_THAT(testStringForMatching(), Equals("this string contains 'ABC' as a substring"));
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CHECK_THAT(testStringForMatching(), Equals("something else", Catch::CaseSensitive::No));
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}
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TEST_CASE("Equals", "[matchers]") {
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CHECK_THAT(testStringForMatching(), Equals("this string contains 'abc' as a substring"));
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CHECK_THAT(testStringForMatching(),
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Equals("this string contains 'ABC' as a substring", Catch::CaseSensitive::No));
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}
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// <regex> does not work in libstdc++ 4.8, so we have to enable these tests only when they
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// are expected to pass and cannot have them in baselines
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TEST_CASE("Regex string matcher -- libstdc++-4.8 workaround", "[matchers][approvals]") {
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// This is fiiiine
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// Taken from an answer at
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// https://stackoverflow.com/questions/12530406/is-gcc-4-8-or-earlier-buggy-about-regular-expressions
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#if (!defined(__GNUC__)) || \
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(__cplusplus >= 201103L && \
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(!defined(__GLIBCXX__) || (__cplusplus >= 201402L) || \
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(defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) || \
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defined(_GLIBCXX_REGEX_STATE_LIMIT) || \
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(defined(_GLIBCXX_RELEASE) && \
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_GLIBCXX_RELEASE > 4))))
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// DJGPP meets the above condition but <regex> does not work properly anyway
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#ifndef __DJGPP__
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REQUIRE_THAT(testStringForMatching(), Matches("this string contains 'abc' as a substring"));
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REQUIRE_THAT(testStringForMatching(),
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Matches("this string CONTAINS 'abc' as a substring", Catch::CaseSensitive::No));
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REQUIRE_THAT(testStringForMatching(), Matches("^this string contains 'abc' as a substring$"));
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REQUIRE_THAT(testStringForMatching(), Matches("^.* 'abc' .*$"));
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REQUIRE_THAT(testStringForMatching(), Matches("^.* 'ABC' .*$", Catch::CaseSensitive::No));
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#endif
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#endif
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REQUIRE_THAT(testStringForMatching2(), !Matches("this string contains 'abc' as a substring"));
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}
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TEST_CASE("Regex string matcher", "[matchers][.failing]") {
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CHECK_THAT(testStringForMatching(), Matches("this STRING contains 'abc' as a substring"));
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CHECK_THAT(testStringForMatching(), Matches("contains 'abc' as a substring"));
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CHECK_THAT(testStringForMatching(), Matches("this string contains 'abc' as a"));
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}
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TEST_CASE("Matchers can be (AllOf) composed with the && operator", "[matchers][operators][operator&&]") {
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CHECK_THAT(testStringForMatching(),
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Contains("string") &&
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Contains("abc") &&
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Contains("substring") &&
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Contains("contains"));
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}
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TEST_CASE("Matchers can be (AnyOf) composed with the || operator", "[matchers][operators][operator||]") {
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CHECK_THAT(testStringForMatching(), Contains("string") || Contains("different") || Contains("random"));
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CHECK_THAT(testStringForMatching2(), Contains("string") || Contains("different") || Contains("random"));
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}
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TEST_CASE("Matchers can be composed with both && and ||", "[matchers][operators][operator||][operator&&]") {
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CHECK_THAT(testStringForMatching(), (Contains("string") || Contains("different")) && Contains("substring"));
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}
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TEST_CASE("Matchers can be composed with both && and || - failing",
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"[matchers][operators][operator||][operator&&][.failing]") {
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CHECK_THAT(testStringForMatching(), (Contains("string") || Contains("different")) && Contains("random"));
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}
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TEST_CASE("Matchers can be negated (Not) with the ! operator", "[matchers][operators][not]") {
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CHECK_THAT(testStringForMatching(), !Contains("different"));
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}
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TEST_CASE("Matchers can be negated (Not) with the ! operator - failing",
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"[matchers][operators][not][.failing]") {
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CHECK_THAT(testStringForMatching(), !Contains("substring"));
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}
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TEST_CASE("Vector matchers", "[matchers][vector]") {
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std::vector<int> v;
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v.push_back(1);
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v.push_back(2);
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v.push_back(3);
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std::vector<int> v2;
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v2.push_back(1);
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v2.push_back(2);
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std::vector<double> v3;
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v3.push_back(1);
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v3.push_back(2);
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v3.push_back(3);
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std::vector<double> v4;
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v4.push_back(1 + 1e-8);
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v4.push_back(2 + 1e-8);
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v4.push_back(3 + 1e-8);
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std::vector<int> empty;
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SECTION("Contains (element)") {
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CHECK_THAT(v, VectorContains(1));
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CHECK_THAT(v, VectorContains(2));
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}
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SECTION("Contains (vector)") {
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CHECK_THAT(v, Contains(v2));
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v2.push_back(3); // now exactly matches
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CHECK_THAT(v, Contains(v2));
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CHECK_THAT(v, Contains(empty));
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CHECK_THAT(empty, Contains(empty));
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}
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SECTION("Contains (element), composed") {
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CHECK_THAT(v, VectorContains(1) && VectorContains(2));
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}
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SECTION("Equals") {
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// Same vector
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CHECK_THAT(v, Equals(v));
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CHECK_THAT(empty, Equals(empty));
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// Different vector with same elements
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v2.push_back(3);
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CHECK_THAT(v, Equals(v2));
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}
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SECTION("UnorderedEquals") {
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CHECK_THAT(v, UnorderedEquals(v));
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CHECK_THAT(empty, UnorderedEquals(empty));
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auto permuted = v;
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std::next_permutation(begin(permuted), end(permuted));
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REQUIRE_THAT(permuted, UnorderedEquals(v));
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std::reverse(begin(permuted), end(permuted));
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REQUIRE_THAT(permuted, UnorderedEquals(v));
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}
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}
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TEST_CASE("Vector matchers that fail", "[matchers][vector][.][failing]") {
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std::vector<int> v;
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v.push_back(1);
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v.push_back(2);
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v.push_back(3);
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std::vector<int> v2;
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v2.push_back(1);
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v2.push_back(2);
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std::vector<double> v3;
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v3.push_back(1);
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v3.push_back(2);
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v3.push_back(3);
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std::vector<double> v4;
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v4.push_back(1.1);
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v4.push_back(2.1);
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v4.push_back(3.1);
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std::vector<int> empty;
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SECTION("Contains (element)") {
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CHECK_THAT(v, VectorContains(-1));
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CHECK_THAT(empty, VectorContains(1));
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}
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SECTION("Contains (vector)") {
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CHECK_THAT(empty, Contains(v));
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v2.push_back(4);
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CHECK_THAT(v, Contains(v2));
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}
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SECTION("Equals") {
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CHECK_THAT(v, Equals(v2));
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CHECK_THAT(v2, Equals(v));
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CHECK_THAT(empty, Equals(v));
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CHECK_THAT(v, Equals(empty));
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}
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SECTION("UnorderedEquals") {
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CHECK_THAT(v, UnorderedEquals(empty));
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CHECK_THAT(empty, UnorderedEquals(v));
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auto permuted = v;
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std::next_permutation(begin(permuted), end(permuted));
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permuted.pop_back();
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CHECK_THAT(permuted, UnorderedEquals(v));
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std::reverse(begin(permuted), end(permuted));
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CHECK_THAT(permuted, UnorderedEquals(v));
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}
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}
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TEST_CASE("Exception matchers that succeed", "[matchers][exceptions][!throws]") {
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CHECK_THROWS_MATCHES(throwsSpecialException(1), SpecialException, ExceptionMatcher{1});
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REQUIRE_THROWS_MATCHES(throwsSpecialException(2), SpecialException, ExceptionMatcher{2});
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}
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TEST_CASE("Exception matchers that fail", "[matchers][exceptions][!throws][.failing]") {
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SECTION("No exception") {
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CHECK_THROWS_MATCHES(doesNotThrow(), SpecialException, ExceptionMatcher{1});
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REQUIRE_THROWS_MATCHES(doesNotThrow(), SpecialException, ExceptionMatcher{1});
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}
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SECTION("Type mismatch") {
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CHECK_THROWS_MATCHES(throwsAsInt(1), SpecialException, ExceptionMatcher{1});
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REQUIRE_THROWS_MATCHES(throwsAsInt(1), SpecialException, ExceptionMatcher{1});
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}
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SECTION("Contents are wrong") {
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CHECK_THROWS_MATCHES(throwsSpecialException(3), SpecialException, ExceptionMatcher{1});
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REQUIRE_THROWS_MATCHES(throwsSpecialException(4), SpecialException, ExceptionMatcher{1});
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}
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}
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TEST_CASE("Floating point matchers: float", "[matchers][floating-point]") {
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SECTION("Relative") {
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REQUIRE_THAT(10.f, WithinRel(11.1f, 0.1f));
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REQUIRE_THAT(10.f, !WithinRel(11.2f, 0.1f));
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REQUIRE_THAT( 1.f, !WithinRel(0.f, 0.99f));
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REQUIRE_THAT(-0.f, WithinRel(0.f));
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SECTION("Some subnormal values") {
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auto v1 = std::numeric_limits<float>::min();
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auto v2 = v1;
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for (int i = 0; i < 5; ++i) {
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v2 = std::nextafter(v1, 0.f);
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}
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REQUIRE_THAT(v1, WithinRel(v2));
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}
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}
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SECTION("Margin") {
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REQUIRE_THAT(1.f, WithinAbs(1.f, 0));
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REQUIRE_THAT(0.f, WithinAbs(1.f, 1));
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REQUIRE_THAT(0.f, !WithinAbs(1.f, 0.99f));
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REQUIRE_THAT(0.f, !WithinAbs(1.f, 0.99f));
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REQUIRE_THAT(0.f, WithinAbs(-0.f, 0));
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REQUIRE_THAT(11.f, !WithinAbs(10.f, 0.5f));
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REQUIRE_THAT(10.f, !WithinAbs(11.f, 0.5f));
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REQUIRE_THAT(-10.f, WithinAbs(-10.f, 0.5f));
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REQUIRE_THAT(-10.f, WithinAbs(-9.6f, 0.5f));
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}
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SECTION("ULPs") {
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REQUIRE_THAT(1.f, WithinULP(1.f, 0));
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REQUIRE_THAT(nextafter(1.f, 2.f), WithinULP(1.f, 1));
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REQUIRE_THAT(0.f, WithinULP(nextafter(0.f, 1.f), 1));
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REQUIRE_THAT(1.f, WithinULP(nextafter(1.f, 0.f), 1));
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REQUIRE_THAT(1.f, !WithinULP(nextafter(1.f, 2.f), 0));
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REQUIRE_THAT(1.f, WithinULP(1.f, 0));
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REQUIRE_THAT(-0.f, WithinULP(0.f, 0));
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}
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SECTION("Composed") {
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REQUIRE_THAT(1.f, WithinAbs(1.f, 0.5) || WithinULP(1.f, 1));
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REQUIRE_THAT(1.f, WithinAbs(2.f, 0.5) || WithinULP(1.f, 0));
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REQUIRE_THAT(0.0001f, WithinAbs(0.f, 0.001f) || WithinRel(0.f, 0.1f));
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}
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SECTION("Constructor validation") {
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REQUIRE_NOTHROW(WithinAbs(1.f, 0.f));
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REQUIRE_THROWS_AS(WithinAbs(1.f, -1.f), std::domain_error);
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REQUIRE_NOTHROW(WithinULP(1.f, 0));
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REQUIRE_THROWS_AS(WithinULP(1.f, static_cast<uint64_t>(-1)), std::domain_error);
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REQUIRE_NOTHROW(WithinRel(1.f, 0.f));
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REQUIRE_THROWS_AS(WithinRel(1.f, -0.2f), std::domain_error);
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REQUIRE_THROWS_AS(WithinRel(1.f, 1.f), std::domain_error);
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}
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}
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TEST_CASE("Floating point matchers: double", "[matchers][floating-point]") {
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SECTION("Relative") {
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REQUIRE_THAT(10., WithinRel(11.1, 0.1));
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REQUIRE_THAT(10., !WithinRel(11.2, 0.1));
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REQUIRE_THAT(1., !WithinRel(0., 0.99));
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REQUIRE_THAT(-0., WithinRel(0.));
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SECTION("Some subnormal values") {
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auto v1 = std::numeric_limits<double>::min();
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auto v2 = v1;
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for (int i = 0; i < 5; ++i) {
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v2 = std::nextafter(v1, 0);
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}
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REQUIRE_THAT(v1, WithinRel(v2));
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}
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}
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SECTION("Margin") {
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REQUIRE_THAT(1., WithinAbs(1., 0));
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REQUIRE_THAT(0., WithinAbs(1., 1));
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REQUIRE_THAT(0., !WithinAbs(1., 0.99));
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REQUIRE_THAT(0., !WithinAbs(1., 0.99));
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REQUIRE_THAT(11., !WithinAbs(10., 0.5));
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REQUIRE_THAT(10., !WithinAbs(11., 0.5));
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REQUIRE_THAT(-10., WithinAbs(-10., 0.5));
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REQUIRE_THAT(-10., WithinAbs(-9.6, 0.5));
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}
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SECTION("ULPs") {
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REQUIRE_THAT(1., WithinULP(1., 0));
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REQUIRE_THAT(nextafter(1., 2.), WithinULP(1., 1));
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REQUIRE_THAT(0., WithinULP(nextafter(0., 1.), 1));
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REQUIRE_THAT(1., WithinULP(nextafter(1., 0.), 1));
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REQUIRE_THAT(1., !WithinULP(nextafter(1., 2.), 0));
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REQUIRE_THAT(1., WithinULP(1., 0));
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REQUIRE_THAT(-0., WithinULP(0., 0));
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}
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SECTION("Composed") {
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REQUIRE_THAT(1., WithinAbs(1., 0.5) || WithinULP(2., 1));
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REQUIRE_THAT(1., WithinAbs(2., 0.5) || WithinULP(1., 0));
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REQUIRE_THAT(0.0001, WithinAbs(0., 0.001) || WithinRel(0., 0.1));
|
|
}
|
|
SECTION("Constructor validation") {
|
|
REQUIRE_NOTHROW(WithinAbs(1., 0.));
|
|
REQUIRE_THROWS_AS(WithinAbs(1., -1.), std::domain_error);
|
|
|
|
REQUIRE_NOTHROW(WithinULP(1., 0));
|
|
|
|
REQUIRE_NOTHROW(WithinRel(1., 0.));
|
|
REQUIRE_THROWS_AS(WithinRel(1., -0.2), std::domain_error);
|
|
REQUIRE_THROWS_AS(WithinRel(1., 1.), std::domain_error);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("Floating point matchers that are problematic in approvals", "[approvals][matchers][floating-point]") {
|
|
REQUIRE_THAT(NAN, !WithinAbs(NAN, 0));
|
|
REQUIRE_THAT(NAN, !(WithinAbs(NAN, 100) || WithinULP(NAN, 123)));
|
|
REQUIRE_THAT(NAN, !WithinULP(NAN, 123));
|
|
REQUIRE_THAT(INFINITY, WithinRel(INFINITY));
|
|
REQUIRE_THAT(-INFINITY, !WithinRel(INFINITY));
|
|
REQUIRE_THAT(1., !WithinRel(INFINITY));
|
|
REQUIRE_THAT(INFINITY, !WithinRel(1.));
|
|
REQUIRE_THAT(NAN, !WithinRel(NAN));
|
|
REQUIRE_THAT(1., !WithinRel(NAN));
|
|
REQUIRE_THAT(NAN, !WithinRel(1.));
|
|
}
|
|
|
|
TEST_CASE("Arbitrary predicate matcher", "[matchers][generic]") {
|
|
SECTION("Function pointer") {
|
|
REQUIRE_THAT(1, Predicate<int>(alwaysTrue, "always true"));
|
|
REQUIRE_THAT(1, !Predicate<int>(alwaysFalse, "always false"));
|
|
}
|
|
SECTION("Lambdas + different type") {
|
|
REQUIRE_THAT("Hello olleH",
|
|
Predicate<std::string>(
|
|
[] (std::string const& str) -> bool { return str.front() == str.back(); },
|
|
"First and last character should be equal")
|
|
);
|
|
|
|
REQUIRE_THAT("This wouldn't pass",
|
|
!Predicate<std::string>(
|
|
[] (std::string const& str) -> bool { return str.front() == str.back(); }
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("Regression test #1", "[matchers][vector]") {
|
|
// At some point, UnorderedEqualsMatcher skipped
|
|
// mismatched prefixed before doing the comparison itself
|
|
std::vector<char> actual = { 'a', 'b' };
|
|
std::vector<char> expected = { 'c', 'b' };
|
|
|
|
CHECK_THAT(actual, !UnorderedEquals(expected));
|
|
}
|
|
|
|
TEST_CASE("Predicate matcher can accept const char*", "[matchers][compilation]") {
|
|
REQUIRE_THAT("foo", Predicate<const char*>([] (const char* const&) { return true; }));
|
|
}
|
|
|
|
TEST_CASE("Vector Approx matcher", "[matchers][approx][vector]") {
|
|
using Catch::Matchers::Approx;
|
|
SECTION("Empty vector is roughly equal to an empty vector") {
|
|
std::vector<double> empty;
|
|
REQUIRE_THAT(empty, Approx(empty));
|
|
}
|
|
SECTION("Vectors with elements") {
|
|
std::vector<double> v1({1., 2., 3.});
|
|
SECTION("A vector is approx equal to itself") {
|
|
REQUIRE_THAT(v1, Approx(v1));
|
|
}
|
|
std::vector<double> v2({1.5, 2.5, 3.5});
|
|
SECTION("Different length") {
|
|
auto temp(v1);
|
|
temp.push_back(4);
|
|
REQUIRE_THAT(v1, !Approx(temp));
|
|
}
|
|
SECTION("Same length, different elements") {
|
|
REQUIRE_THAT(v1, !Approx(v2));
|
|
REQUIRE_THAT(v1, Approx(v2).margin(0.5));
|
|
REQUIRE_THAT(v1, Approx(v2).epsilon(0.5));
|
|
REQUIRE_THAT(v1, Approx(v2).epsilon(0.1).scale(500));
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_CASE("Vector Approx matcher -- failing", "[matchers][approx][vector][.failing]") {
|
|
using Catch::Matchers::Approx;
|
|
SECTION("Empty and non empty vectors are not approx equal") {
|
|
std::vector<double> empty, t1({1, 2});
|
|
CHECK_THAT(empty, Approx(t1));
|
|
}
|
|
SECTION("Just different vectors") {
|
|
std::vector<double> v1({2., 4., 6.}), v2({1., 3., 5.});
|
|
CHECK_THAT(v1, Approx(v2));
|
|
}
|
|
}
|
|
|
|
TEST_CASE("Exceptions matchers", "[matchers][exceptions][!throws]") {
|
|
REQUIRE_THROWS_MATCHES(throwsDerivedException(), DerivedException, Message("DerivedException::what"));
|
|
REQUIRE_THROWS_MATCHES(throwsDerivedException(), DerivedException, !Message("derivedexception::what"));
|
|
REQUIRE_THROWS_MATCHES(throwsSpecialException(2), SpecialException, !Message("DerivedException::what"));
|
|
REQUIRE_THROWS_MATCHES(throwsSpecialException(2), SpecialException, Message("SpecialException::what"));
|
|
}
|
|
|
|
template<typename Range>
|
|
struct EqualsRangeMatcher : Catch::Matchers::MatcherGenericBase {
|
|
|
|
EqualsRangeMatcher(Range const& range) : range{ range } {}
|
|
|
|
template<typename OtherRange>
|
|
bool match(OtherRange const& other) const {
|
|
using std::begin;
|
|
using std::end;
|
|
|
|
return std::equal(begin(range), end(range), begin(other), end(other));
|
|
}
|
|
|
|
std::string describe() const override {
|
|
return "Equals: " + Catch::rangeToString(range);
|
|
}
|
|
|
|
private:
|
|
Range const& range;
|
|
};
|
|
|
|
template<typename Range>
|
|
auto EqualsRange(const Range& range) -> EqualsRangeMatcher<Range> {
|
|
return EqualsRangeMatcher<Range>{range};
|
|
}
|
|
|
|
TEST_CASE("Combining templated matchers", "[matchers][templated]") {
|
|
std::array<int, 3> container{{ 1,2,3 }};
|
|
|
|
std::array<int, 3> a{{ 1,2,3 }};
|
|
std::vector<int> b{ 0,1,2 };
|
|
std::list<int> c{ 4,5,6 };
|
|
|
|
REQUIRE_THAT(container, EqualsRange(a) || EqualsRange(b) || EqualsRange(c));
|
|
}
|
|
|
|
TEST_CASE("Combining templated and concrete matchers", "[matchers][templated]") {
|
|
std::vector<int> vec{ 1, 3, 5 };
|
|
|
|
std::array<int, 3> a{{ 5, 3, 1 }};
|
|
|
|
REQUIRE_THAT(vec,
|
|
Predicate<std::vector<int>>([](auto const& vec) {
|
|
return std::all_of(vec.begin(), vec.end(), [](int elem) {
|
|
return elem % 2 == 1;
|
|
});
|
|
}, "All elements are odd") &&
|
|
!EqualsRange(a));
|
|
|
|
const std::string str = "foobar";
|
|
const std::array<char, 6> arr{{ 'f', 'o', 'o', 'b', 'a', 'r' }};
|
|
const std::array<char, 6> bad_arr{{ 'o', 'o', 'f', 'b', 'a', 'r' }};
|
|
|
|
using Catch::Matchers::StartsWith;
|
|
using Catch::Matchers::EndsWith;
|
|
|
|
REQUIRE_THAT(str, StartsWith("foo") && EqualsRange(arr) && EndsWith("bar"));
|
|
REQUIRE_THAT(str, StartsWith("foo") && !EqualsRange(bad_arr) && EndsWith("bar"));
|
|
|
|
REQUIRE_THAT(str, EqualsRange(arr) && StartsWith("foo") && EndsWith("bar"));
|
|
REQUIRE_THAT(str, !EqualsRange(bad_arr) && StartsWith("foo") && EndsWith("bar"));
|
|
|
|
REQUIRE_THAT(str, EqualsRange(bad_arr) || (StartsWith("foo") && EndsWith("bar")));
|
|
REQUIRE_THAT(str, (StartsWith("foo") && EndsWith("bar")) || EqualsRange(bad_arr));
|
|
}
|
|
|
|
TEST_CASE("Combining concrete matchers does not use templated matchers", "[matchers][templated]") {
|
|
using Catch::Matchers::StartsWith;
|
|
using Catch::Matchers::EndsWith;
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(StartsWith("foo") || (StartsWith("bar") && EndsWith("bar") && !EndsWith("foo"))),
|
|
Catch::Matchers::Detail::MatchAnyOf<std::string>
|
|
>::value);
|
|
}
|
|
|
|
struct MatcherA : Catch::Matchers::MatcherGenericBase {
|
|
std::string describe() const override { return "equals: (int) 1 or (float) 1.0f"; }
|
|
bool match(int i) const { return i == 1; }
|
|
bool match(float f) const { return f == 1.0f; }
|
|
};
|
|
|
|
struct MatcherB : Catch::Matchers::MatcherGenericBase {
|
|
std::string describe() const override { return "equals: (long long) 1"; }
|
|
bool match(long long l) const { return l == 1ll; }
|
|
};
|
|
|
|
struct MatcherC : Catch::Matchers::MatcherGenericBase {
|
|
std::string describe() const override { return "equals: (T) 1"; }
|
|
template<typename T>
|
|
bool match(T t) const { return t == T{1}; }
|
|
};
|
|
|
|
struct MatcherD : Catch::Matchers::MatcherGenericBase {
|
|
std::string describe() const override { return "equals: true"; }
|
|
bool match(bool b) const { return b == true; }
|
|
};
|
|
|
|
TEST_CASE("Combining only templated matchers", "[matchers][templated]") {
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() || MatcherB()),
|
|
Catch::Matchers::Detail::MatchAnyOfGeneric<MatcherA, MatcherB>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() || MatcherB());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() && MatcherB()),
|
|
Catch::Matchers::Detail::MatchAllOfGeneric<MatcherA, MatcherB>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() && MatcherB());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() || !MatcherB()),
|
|
Catch::Matchers::Detail::MatchAnyOfGeneric<MatcherA, Catch::Matchers::Detail::MatchNotOfGeneric<MatcherB>>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() || !MatcherB());
|
|
}
|
|
|
|
TEST_CASE("Combining MatchAnyOfGeneric does not nest", "[matchers][templated]") {
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() || MatcherB() || MatcherC()),
|
|
Catch::Matchers::Detail::MatchAnyOfGeneric<MatcherA, MatcherB, MatcherC>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() || MatcherB() || MatcherC());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() || MatcherB() || MatcherC() || MatcherD()),
|
|
Catch::Matchers::Detail::MatchAnyOfGeneric<MatcherA, MatcherB, MatcherC, MatcherD>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() || MatcherB() || MatcherC() || MatcherD());
|
|
}
|
|
|
|
TEST_CASE("Combining MatchAllOfGeneric does not nest", "[matchers][templated]") {
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() && MatcherB() && MatcherC()),
|
|
Catch::Matchers::Detail::MatchAllOfGeneric<MatcherA, MatcherB, MatcherC>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() && MatcherB() && MatcherC());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(MatcherA() && MatcherB() && MatcherC() && MatcherD()),
|
|
Catch::Matchers::Detail::MatchAllOfGeneric<MatcherA, MatcherB, MatcherC, MatcherD>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, MatcherA() && MatcherB() && MatcherC() && MatcherD());
|
|
}
|
|
|
|
TEST_CASE("Combining MatchNotOfGeneric does not nest", "[matchers][templated]") {
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(!MatcherA()),
|
|
Catch::Matchers::Detail::MatchNotOfGeneric<MatcherA>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(0, !MatcherA());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(!!MatcherA()),
|
|
MatcherA const&
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, !!MatcherA());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(!!!MatcherA()),
|
|
Catch::Matchers::Detail::MatchNotOfGeneric<MatcherA>
|
|
>::value);
|
|
|
|
REQUIRE_THAT(0, !!!MatcherA());
|
|
|
|
STATIC_REQUIRE(std::is_same<
|
|
decltype(!!!!MatcherA()),
|
|
MatcherA const &
|
|
>::value);
|
|
|
|
REQUIRE_THAT(1, !!!!MatcherA());
|
|
}
|
|
|
|
struct EvilAddressOfOperatorUsed : std::exception {
|
|
EvilAddressOfOperatorUsed() {}
|
|
const char* what() const noexcept override {
|
|
return "overloaded address-of operator of matcher was used instead of std::addressof";
|
|
}
|
|
};
|
|
|
|
struct EvilCommaOperatorUsed : std::exception {
|
|
EvilCommaOperatorUsed() {}
|
|
const char* what() const noexcept override {
|
|
return "overloaded comma operator of matcher was used";
|
|
}
|
|
};
|
|
|
|
struct EvilMatcher : Catch::Matchers::MatcherGenericBase {
|
|
std::string describe() const override {
|
|
return "equals: 45";
|
|
}
|
|
|
|
bool match(int i) const {
|
|
return i == 45;
|
|
}
|
|
|
|
EvilMatcher const* operator& () const {
|
|
throw EvilAddressOfOperatorUsed();
|
|
}
|
|
|
|
int operator,(EvilMatcher const&) const {
|
|
throw EvilCommaOperatorUsed();
|
|
}
|
|
};
|
|
|
|
TEST_CASE("Overloaded comma or address-of operators are not used", "[matchers][templated]") {
|
|
REQUIRE_THROWS_AS((EvilMatcher(), EvilMatcher()), EvilCommaOperatorUsed);
|
|
REQUIRE_THROWS_AS(&EvilMatcher(), EvilAddressOfOperatorUsed);
|
|
REQUIRE_NOTHROW(EvilMatcher() || EvilMatcher() && !EvilMatcher());
|
|
REQUIRE_NOTHROW((EvilMatcher() && EvilMatcher()) || !EvilMatcher());
|
|
}
|
|
|
|
struct ImmovableMatcher : Catch::Matchers::MatcherGenericBase {
|
|
ImmovableMatcher() = default;
|
|
ImmovableMatcher(ImmovableMatcher const&) = delete;
|
|
ImmovableMatcher(ImmovableMatcher &&) = delete;
|
|
ImmovableMatcher& operator=(ImmovableMatcher const&) = delete;
|
|
ImmovableMatcher& operator=(ImmovableMatcher &&) = delete;
|
|
|
|
std::string describe() const override {
|
|
return "always false";
|
|
}
|
|
|
|
template<typename T>
|
|
bool match(T&&) const {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
struct MatcherWasMovedOrCopied : std::exception {
|
|
MatcherWasMovedOrCopied() {}
|
|
const char* what() const noexcept override {
|
|
return "attempted to copy or move a matcher";
|
|
}
|
|
};
|
|
|
|
struct ThrowOnCopyOrMoveMatcher : Catch::Matchers::MatcherGenericBase {
|
|
ThrowOnCopyOrMoveMatcher() = default;
|
|
[[noreturn]]
|
|
ThrowOnCopyOrMoveMatcher(ThrowOnCopyOrMoveMatcher const&) {
|
|
throw MatcherWasMovedOrCopied();
|
|
}
|
|
[[noreturn]]
|
|
ThrowOnCopyOrMoveMatcher(ThrowOnCopyOrMoveMatcher &&) {
|
|
throw MatcherWasMovedOrCopied();
|
|
}
|
|
ThrowOnCopyOrMoveMatcher& operator=(ThrowOnCopyOrMoveMatcher const&) {
|
|
throw MatcherWasMovedOrCopied();
|
|
}
|
|
ThrowOnCopyOrMoveMatcher& operator=(ThrowOnCopyOrMoveMatcher &&) {
|
|
throw MatcherWasMovedOrCopied();
|
|
}
|
|
|
|
std::string describe() const override {
|
|
return "always false";
|
|
}
|
|
|
|
template<typename T>
|
|
bool match(T&&) const {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
TEST_CASE("Matchers are not moved or copied", "[matchers][templated][approvals]") {
|
|
REQUIRE_NOTHROW((ThrowOnCopyOrMoveMatcher() && ThrowOnCopyOrMoveMatcher()) || !ThrowOnCopyOrMoveMatcher());
|
|
}
|
|
|
|
TEST_CASE("Immovable matchers can be used", "[matchers][templated][approvals]") {
|
|
REQUIRE_THAT(123, (ImmovableMatcher() && ImmovableMatcher()) || !ImmovableMatcher());
|
|
}
|
|
|
|
struct ReferencingMatcher : Catch::Matchers::MatcherGenericBase {
|
|
std::string describe() const override {
|
|
return "takes reference";
|
|
}
|
|
bool match(int& i) const {
|
|
return i == 22;
|
|
}
|
|
};
|
|
|
|
TEST_CASE("Matchers can take references", "[matchers][templated][approvals]") {
|
|
REQUIRE_THAT(22, ReferencingMatcher{});
|
|
}
|
|
|
|
} } // namespace MatchersTests
|
|
|
|
#ifdef __clang__
|
|
#pragma clang diagnostic pop
|
|
#endif
|