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https://github.com/RGBCube/serenity
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ba20ddb834
Generators are callable as-is:
u32 my_int = Gen::unsigned_int(); // -> 1, 5, 8, 3, 2
But there is little visibility in the test fail message into what went
wrong. Showing what values were generated helps a lot, and that's what
this macro does:
GEN(my_int, Gen::unsigned_int());
expands into the above declaration and (crucially) a conditional
warnln() call looking like "my_int = {}". It will only run if error
reporting is enabled (see Test::can_report()), so it will only give the
final shrunk value instead of spamming the output with each generated
value.
92 lines
4.4 KiB
C++
92 lines
4.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Andrew Kaster <akaster@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibTest/Macros.h> // intentionally first -- we redefine VERIFY and friends in here
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#include <AK/DeprecatedString.h>
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#include <AK/Function.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefCounted.h>
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namespace Test {
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using TestFunction = Function<void()>;
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class TestCase : public RefCounted<TestCase> {
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public:
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TestCase(DeprecatedString const& name, TestFunction&& fn, bool is_benchmark)
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: m_name(name)
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, m_function(move(fn))
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, m_is_benchmark(is_benchmark)
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{
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}
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bool is_benchmark() const { return m_is_benchmark; }
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DeprecatedString const& name() const { return m_name; }
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TestFunction const& func() const { return m_function; }
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private:
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DeprecatedString m_name;
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TestFunction m_function;
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bool m_is_benchmark;
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};
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// Helper to hide implementation of TestSuite from users
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void add_test_case_to_suite(NonnullRefPtr<TestCase> const& test_case);
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void set_suite_setup_function(Function<void()> setup);
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}
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#define TEST_SETUP \
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static void __setup(); \
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struct __setup_type { \
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__setup_type() \
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{ \
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Test::set_suite_setup_function(__setup); \
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} \
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}; \
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static struct __setup_type __setup_type; \
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static void __setup()
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#define __TESTCASE_FUNC(x) __test_##x
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#define __TESTCASE_TYPE(x) __TestCase_##x
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#define TEST_CASE(x) \
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static void __TESTCASE_FUNC(x)(); \
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struct __TESTCASE_TYPE(x) { \
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__TESTCASE_TYPE(x) \
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() \
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{ \
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add_test_case_to_suite(adopt_ref(*new ::Test::TestCase(#x, __TESTCASE_FUNC(x), false))); \
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} \
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}; \
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static struct __TESTCASE_TYPE(x) __TESTCASE_TYPE(x); \
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static void __TESTCASE_FUNC(x)()
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#define __BENCHMARK_FUNC(x) __benchmark_##x
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#define __BENCHMARK_TYPE(x) __BenchmarkCase_##x
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#define BENCHMARK_CASE(x) \
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static void __BENCHMARK_FUNC(x)(); \
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struct __BENCHMARK_TYPE(x) { \
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__BENCHMARK_TYPE(x) \
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() \
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{ \
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add_test_case_to_suite(adopt_ref(*new ::Test::TestCase(#x, __BENCHMARK_FUNC(x), true))); \
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} \
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}; \
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static struct __BENCHMARK_TYPE(x) __BENCHMARK_TYPE(x); \
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static void __BENCHMARK_FUNC(x)()
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// This allows us to print the generated locals in the test after a failure is fully shrunk.
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#define GEN(identifier, value) \
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auto identifier = (value); \
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if (::Test::current_test_result() == ::Test::TestResult::Overrun) \
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return; \
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if (::Test::is_reporting_enabled()) \
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::AK::warnln("{} = {}", #identifier, (identifier))
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