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TEST_CASE_PERSISTENT_FIXTURE: A new fixture macro for allowing persistent fixtures throughout a TEST_CASE (#2885)

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This PR introduces a new `TEST_CASE` macro called `TEST_CASE_PERSISTENT_FIXTURE`. `TEST_CASE_PERSISTENT_FIXTURE` offers the same functionality as `TEST_CASE_METHOD` except for one difference. The object on which the test method is invoked is only created once for all invocations of the test case. The object is created just after the `testCaseStarting` event is broadcast and the object is destroyed just before the `testCaseEnding` event is broadcast.

The main motivation for this new functionality is to allow `TEST_CASE`s to do expensive setup and teardown once per `TEST_CASE`, without having to resort to abusing event listeners or static function variables with manual initialization.


Implements #1602

---------

Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com>
This commit is contained in:
Keith Stockdale
2024-08-05 16:01:41 +01:00
committed by GitHub
parent 33e24b14fc
commit f7cd0ba051
31 changed files with 643 additions and 62 deletions
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46
tests/ExtraTests/X02-DisabledMacros.cpp
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@@ -11,34 +11,28 @@
* and expressions in assertion macros are not run.
*/
#include <catch2/catch_test_macros.hpp>
#include <catch2/benchmark/catch_benchmark.hpp>
#include <catch2/catch_test_macros.hpp>
#include <catch2/matchers/catch_matchers.hpp>
#include <catch2/matchers/catch_matchers_predicate.hpp>
#include <iostream>
struct foo {
foo(){
REQUIRE_NOTHROW( print() );
}
void print() const {
std::cout << "This should not happen\n";
}
foo() { REQUIRE_NOTHROW( print() ); }
void print() const { std::cout << "This should not happen\n"; }
};
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wglobal-constructors"
#if defined( __clang__ )
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wglobal-constructors"
#endif
// Construct foo, but `foo::print` should not be run
static foo f;
#if defined(__clang__)
#if defined( __clang__ )
// The test is unused since the registration is disabled
#pragma clang diagnostic ignored "-Wunused-function"
# pragma clang diagnostic ignored "-Wunused-function"
#endif
// This test should not be run, because it won't be registered
@@ -60,6 +54,26 @@ TEST_CASE( "Disabled Macros" ) {
BENCHMARK( "Disabled benchmark" ) { REQUIRE( 1 == 2 ); };
}
#if defined(__clang__)
#pragma clang diagnostic pop
struct DisabledFixture {};
TEST_CASE_PERSISTENT_FIXTURE( DisabledFixture, "Disabled Persistent Fixture" ) {
CHECK( 1 == 2 );
REQUIRE( 1 == 2 );
std::cout << "This should not happen\n";
FAIL();
// Test that static assertions don't fire when macros are disabled
STATIC_CHECK( 0 == 1 );
STATIC_REQUIRE( !true );
CAPTURE( 1 );
CAPTURE( 1, "captured" );
REQUIRE_THAT( 1,
Catch::Matchers::Predicate( []( int ) { return false; } ) );
BENCHMARK( "Disabled benchmark" ) { REQUIRE( 1 == 2 ); };
}
#if defined( __clang__ )
# pragma clang diagnostic pop
#endif