mirror of
https://github.com/catchorg/Catch2.git
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e5632e5e94
This has not huge benefits in Catch2 codebase, but it is still easy to take in use and it will benefit those which build catch2 with project default compiler options. Signed-off-by: Kari Argillander <kari.argillander@gmail.com>
335 lines
8.9 KiB
C++
335 lines
8.9 KiB
C++
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// Copyright Catch2 Authors
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.txt or copy at
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// https://www.boost.org/LICENSE_1_0.txt)
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// SPDX-License-Identifier: BSL-1.0
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#ifdef __clang__
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wpadded"
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// Wdouble-promotion is not supported until 3.8
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# if (__clang_major__ > 3) || (__clang_major__ == 3 && __clang_minor__ > 7)
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# pragma clang diagnostic ignored "-Wdouble-promotion"
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# endif
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#endif
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#include <catch2/catch_approx.hpp>
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#include <catch2/catch_test_macros.hpp>
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using Catch::Approx;
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#include <string>
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#include <limits>
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#include <cstdint>
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namespace {
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struct TestData {
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int int_seven = 7;
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std::string str_hello = "hello";
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float float_nine_point_one = 9.1f;
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double double_pi = 3.1415926535;
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};
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static const char* returnsConstNull() { return nullptr; }
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static char* returnsNull() { return nullptr; }
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} // end unnamed namespace
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// The "failing" tests all use the CHECK macro, which continues if the specific test fails.
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// This allows us to see all results, even if an earlier check fails
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// Equality tests
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TEST_CASE( "Equality checks that should succeed" )
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{
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TestData data;
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REQUIRE( data.int_seven == 7 );
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REQUIRE( data.float_nine_point_one == Approx( 9.1f ) );
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REQUIRE( data.double_pi == Approx( 3.1415926535 ) );
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REQUIRE( data.str_hello == "hello" );
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REQUIRE( "hello" == data.str_hello );
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REQUIRE( data.str_hello.size() == 5 );
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double x = 1.1 + 0.1 + 0.1;
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REQUIRE( x == Approx( 1.3 ) );
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}
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TEST_CASE( "Equality checks that should fail", "[.][failing][!mayfail]" )
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{
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TestData data;
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CHECK( data.int_seven == 6 );
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CHECK( data.int_seven == 8 );
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CHECK( data.int_seven == 0 );
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CHECK( data.float_nine_point_one == Approx( 9.11f ) );
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CHECK( data.float_nine_point_one == Approx( 9.0f ) );
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CHECK( data.float_nine_point_one == Approx( 1 ) );
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CHECK( data.float_nine_point_one == Approx( 0 ) );
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CHECK( data.double_pi == Approx( 3.1415 ) );
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CHECK( data.str_hello == "goodbye" );
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CHECK( data.str_hello == "hell" );
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CHECK( data.str_hello == "hello1" );
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CHECK( data.str_hello.size() == 6 );
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double x = 1.1 + 0.1 + 0.1;
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CHECK( x == Approx( 1.301 ) );
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}
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// Needed to test junit reporter's handling of mayfail test cases and sections
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TEST_CASE("Mayfail test case with nested sections", "[!mayfail]") {
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SECTION("A") {
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SECTION("1") { FAIL(); }
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SECTION("2") { FAIL(); }
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}
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SECTION("B") {
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SECTION("1") { FAIL(); }
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SECTION("2") { FAIL(); }
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}
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}
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TEST_CASE( "Inequality checks that should succeed" )
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{
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TestData data;
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REQUIRE( data.int_seven != 6 );
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REQUIRE( data.int_seven != 8 );
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REQUIRE( data.float_nine_point_one != Approx( 9.11f ) );
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REQUIRE( data.float_nine_point_one != Approx( 9.0f ) );
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REQUIRE( data.float_nine_point_one != Approx( 1 ) );
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REQUIRE( data.float_nine_point_one != Approx( 0 ) );
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REQUIRE( data.double_pi != Approx( 3.1415 ) );
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REQUIRE( data.str_hello != "goodbye" );
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REQUIRE( data.str_hello != "hell" );
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REQUIRE( data.str_hello != "hello1" );
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REQUIRE( data.str_hello.size() != 6 );
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}
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TEST_CASE( "Inequality checks that should fail", "[.][failing][!shouldfail]" )
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{
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TestData data;
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CHECK( data.int_seven != 7 );
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CHECK( data.float_nine_point_one != Approx( 9.1f ) );
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CHECK( data.double_pi != Approx( 3.1415926535 ) );
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CHECK( data.str_hello != "hello" );
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CHECK( data.str_hello.size() != 5 );
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}
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// Ordering comparison tests
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TEST_CASE( "Ordering comparison checks that should succeed" )
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{
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TestData data;
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REQUIRE( data.int_seven < 8 );
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REQUIRE( data.int_seven > 6 );
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REQUIRE( data.int_seven > 0 );
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REQUIRE( data.int_seven > -1 );
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REQUIRE( data.int_seven >= 7 );
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REQUIRE( data.int_seven >= 6 );
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REQUIRE( data.int_seven <= 7 );
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REQUIRE( data.int_seven <= 8 );
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REQUIRE( data.float_nine_point_one > 9 );
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REQUIRE( data.float_nine_point_one < 10 );
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REQUIRE( data.float_nine_point_one < 9.2f );
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REQUIRE( data.str_hello <= "hello" );
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REQUIRE( data.str_hello >= "hello" );
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REQUIRE( data.str_hello < "hellp" );
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REQUIRE( data.str_hello < "zebra" );
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REQUIRE( data.str_hello > "hellm" );
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REQUIRE( data.str_hello > "a" );
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}
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TEST_CASE( "Ordering comparison checks that should fail", "[.][failing]" )
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{
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TestData data;
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CHECK( data.int_seven > 7 );
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CHECK( data.int_seven < 7 );
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CHECK( data.int_seven > 8 );
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CHECK( data.int_seven < 6 );
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CHECK( data.int_seven < 0 );
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CHECK( data.int_seven < -1 );
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CHECK( data.int_seven >= 8 );
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CHECK( data.int_seven <= 6 );
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CHECK( data.float_nine_point_one < 9 );
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CHECK( data.float_nine_point_one > 10 );
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CHECK( data.float_nine_point_one > 9.2f );
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CHECK( data.str_hello > "hello" );
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CHECK( data.str_hello < "hello" );
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CHECK( data.str_hello > "hellp" );
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CHECK( data.str_hello > "z" );
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CHECK( data.str_hello < "hellm" );
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CHECK( data.str_hello < "a" );
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CHECK( data.str_hello >= "z" );
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CHECK( data.str_hello <= "a" );
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}
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#ifdef __clang__
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# pragma clang diagnostic pop
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#endif
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// Comparisons with int literals
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TEST_CASE( "Comparisons with int literals don't warn when mixing signed/ unsigned" )
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{
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int i = 1;
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unsigned int ui = 2;
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long l = 3;
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unsigned long ul = 4;
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char c = 5;
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unsigned char uc = 6;
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REQUIRE( i == 1 );
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REQUIRE( ui == 2 );
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REQUIRE( l == 3 );
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REQUIRE( ul == 4 );
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REQUIRE( c == 5 );
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REQUIRE( uc == 6 );
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REQUIRE( 1 == i );
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REQUIRE( 2 == ui );
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REQUIRE( 3 == l );
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REQUIRE( 4 == ul );
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REQUIRE( 5 == c );
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REQUIRE( 6 == uc );
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REQUIRE( (std::numeric_limits<uint32_t>::max)() > ul );
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}
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// Disable warnings about sign conversions for the next two tests
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// (as we are deliberately invoking them)
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// - Currently only disabled for GCC/ LLVM. Should add VC++ too
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#ifdef __GNUC__
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wsign-compare"
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#pragma GCC diagnostic ignored "-Wsign-conversion"
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#endif
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#ifdef _MSC_VER
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#pragma warning(disable:4389) // '==' : signed/unsigned mismatch
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#endif
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TEST_CASE( "comparisons between int variables" )
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{
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long long_var = 1L;
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unsigned char unsigned_char_var = 1;
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unsigned short unsigned_short_var = 1;
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unsigned int unsigned_int_var = 1;
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unsigned long unsigned_long_var = 1L;
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REQUIRE( long_var == unsigned_char_var );
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REQUIRE( long_var == unsigned_short_var );
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REQUIRE( long_var == unsigned_int_var );
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REQUIRE( long_var == unsigned_long_var );
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}
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TEST_CASE( "comparisons between const int variables" )
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{
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const unsigned char unsigned_char_var = 1;
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const unsigned short unsigned_short_var = 1;
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const unsigned int unsigned_int_var = 1;
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const unsigned long unsigned_long_var = 1L;
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REQUIRE( unsigned_char_var == 1 );
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REQUIRE( unsigned_short_var == 1 );
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REQUIRE( unsigned_int_var == 1 );
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REQUIRE( unsigned_long_var == 1 );
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}
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TEST_CASE( "Comparisons between unsigned ints and negative signed ints match c++ standard behaviour" )
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{
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CHECK( ( -1 > 2u ) );
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CHECK( -1 > 2u );
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CHECK( ( 2u < -1 ) );
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CHECK( 2u < -1 );
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const int minInt = (std::numeric_limits<int>::min)();
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CHECK( ( minInt > 2u ) );
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CHECK( minInt > 2u );
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}
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TEST_CASE( "Comparisons between ints where one side is computed" )
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{
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CHECK( 54 == 6*9 );
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}
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#ifdef __GNUC__
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#pragma GCC diagnostic pop
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#endif
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TEST_CASE( "Pointers can be compared to null" )
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{
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TestData* p = nullptr;
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TestData* pNULL = nullptr;
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REQUIRE( p == nullptr );
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REQUIRE( p == pNULL );
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TestData data;
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p = &data;
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REQUIRE( p != nullptr );
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const TestData* cp = p;
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REQUIRE( cp != nullptr );
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const TestData* const cpc = p;
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REQUIRE( cpc != nullptr );
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REQUIRE( returnsNull() == nullptr );
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REQUIRE( returnsConstNull() == nullptr );
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REQUIRE( nullptr != p );
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}
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// Not (!) tests
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// The problem with the ! operator is that it has right-to-left associativity.
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// This means we can't isolate it when we decompose. The simple REQUIRE( !false ) form, therefore,
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// cannot have the operand value extracted. The test will work correctly, and the situation
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// is detected and a warning issued.
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// An alternative form of the macros (CHECK_FALSE and REQUIRE_FALSE) can be used instead to capture
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// the operand value.
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TEST_CASE( "'Not' checks that should succeed" )
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{
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bool falseValue = false;
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REQUIRE( false == false );
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REQUIRE( true == true );
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REQUIRE( !false );
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REQUIRE_FALSE( false );
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REQUIRE( !falseValue );
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REQUIRE_FALSE( falseValue );
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REQUIRE( !(1 == 2) );
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REQUIRE_FALSE( 1 == 2 );
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}
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TEST_CASE( "'Not' checks that should fail", "[.][failing]" )
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{
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bool trueValue = true;
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CHECK( false != false );
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CHECK( true != true );
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CHECK( !true );
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CHECK_FALSE( true );
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CHECK( !trueValue );
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CHECK_FALSE( trueValue );
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CHECK( !(1 == 1) );
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CHECK_FALSE( 1 == 1 );
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}
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