zdoom-macos-deps/deps/wxwidgets/include/wx-3.1/wx/catch_cppunit.h
2021-06-28 10:54:57 +03:00

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/////////////////////////////////////////////////////////////////////////////
// Name: wx/catch_cppunit.h
// Purpose: Reimplementation of CppUnit macros in terms of CATCH
// Author: Vadim Zeitlin
// Created: 2017-10-30
// Copyright: (c) 2017 Vadim Zeitlin <vadim@wxwidgets.org>
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_CATCH_CPPUNIT_H_
#define _WX_CATCH_CPPUNIT_H_
#include "catch.hpp"
// CppUnit-compatible macros.
// CPPUNIT_ASSERTs are mapped to REQUIRE(), not CHECK(), as this is how CppUnit
// works but in many cases they really should be CHECK()s instead, i.e. the
// test should continue to run even if one assert failed. Unfortunately there
// is no automatic way to know it, so the existing code will need to be
// reviewed and CHECK() used explicitly where appropriate.
//
// Also notice that we don't use parentheses around x and y macro arguments in
// the macro expansion, as usual. This is because these parentheses would then
// appear in CATCH error messages if the assertion fails, making them much less
// readable and omitting should be fine here, exceptionally, as the arguments
// of these macros are usually just simple expressions.
#define CPPUNIT_ASSERT(cond) REQUIRE(cond)
#define CPPUNIT_ASSERT_EQUAL(x, y) REQUIRE(x == y)
// Using INFO() disallows putting more than one of these macros on the same
// line but this can happen if they're used inside another macro, so wrap it
// inside a scope.
#define CPPUNIT_ASSERT_MESSAGE(msg, cond) \
do { INFO(msg); REQUIRE(cond); } while (Catch::alwaysFalse())
#define CPPUNIT_ASSERT_EQUAL_MESSAGE(msg, x, y) \
do { INFO(msg); REQUIRE(x == y); } while (Catch::alwaysFalse())
// CATCH Approx class uses the upper bound of "epsilon*(scale + max(|x|, |y|))"
// for |x - y| which is not really compatible with our fixed delta, so we can't
// use it here.
#define CPPUNIT_ASSERT_DOUBLES_EQUAL(x, y, delta) \
REQUIRE(std::abs(x - y) < delta)
#define CPPUNIT_FAIL(msg) FAIL(msg)
#define CPPUNIT_ASSERT_THROW(expr, exception) \
try \
{ \
expr; \
FAIL("Expected exception of type " #exception \
" not thrown by " #expr); \
} \
catch ( exception& ) {}
// Define conversions to strings for some common wxWidgets types.
namespace Catch
{
template <>
struct StringMaker<wxUniChar>
{
static std::string convert(wxUniChar uc)
{
return wxString(uc).ToStdString(wxConvUTF8);
}
};
template <>
struct StringMaker<wxUniCharRef>
{
static std::string convert(wxUniCharRef ucr)
{
return wxString(ucr).ToStdString(wxConvUTF8);
}
};
// While this conversion already works due to the existence of the stream
// insertion operator for wxString, define a custom one making it more
// obvious when strings containing non-printable characters differ.
template <>
struct StringMaker<wxString>
{
static std::string convert(const wxString& wxs)
{
std::string s;
s.reserve(wxs.length());
for ( wxString::const_iterator i = wxs.begin();
i != wxs.end();
++i )
{
#if wxUSE_UNICODE
if ( !iswprint(*i) )
s += wxString::Format(wxASCII_STR("\\u%04X"), *i).ToAscii();
else
#endif // wxUSE_UNICODE
s += *i;
}
return s;
}
};
}
// Use a different namespace for our mock ups of the real declarations in
// CppUnit namespace to avoid clashes if we end up being linked with the real
// CppUnit library, but bring it into scope with a using directive below to
// make it possible to compile the original code using CppUnit unmodified.
namespace CatchCppUnit
{
namespace CppUnit
{
// These classes don't really correspond to the real CppUnit ones, but contain
// just the minimum we need to make CPPUNIT_TEST() macro and our mock up of
// TestSuite class work.
class Test
{
public:
// Name argument exists only for compatibility with the real CppUnit but is
// not used here.
explicit Test(const std::string& name = std::string()) : m_name(name) { }
virtual ~Test() { }
virtual void runTest() = 0;
const std::string& getName() const { return m_name; }
private:
std::string m_name;
};
class TestCase : public Test
{
public:
explicit TestCase(const std::string& name = std::string()) : Test(name) { }
virtual void setUp() {}
virtual void tearDown() {}
};
class TestSuite : public Test
{
public:
explicit TestSuite(const std::string& name = std::string()) : Test(name) { }
~TestSuite()
{
for ( size_t n = 0; n < m_tests.size(); ++n )
{
delete m_tests[n];
}
}
void addTest(Test* test) { m_tests.push_back(test); }
size_t getChildTestCount() const { return m_tests.size(); }
void runTest() wxOVERRIDE
{
for ( size_t n = 0; n < m_tests.size(); ++n )
{
m_tests[n]->runTest();
}
}
private:
std::vector<Test*> m_tests;
wxDECLARE_NO_COPY_CLASS(TestSuite);
};
} // namespace CppUnit
} // namespace CatchCppUnit
using namespace CatchCppUnit;
// Helpers used in the implementation of the macros below.
namespace wxPrivate
{
// An object which resets a string to its old value when going out of scope.
class TempStringAssign
{
public:
explicit TempStringAssign(std::string& str, const char* value)
: m_str(str),
m_orig(str)
{
str = value;
}
~TempStringAssign()
{
m_str = m_orig;
}
private:
std::string& m_str;
const std::string m_orig;
wxDECLARE_NO_COPY_CLASS(TempStringAssign);
};
// These two strings are used to implement wxGetCurrentTestName() and must be
// defined in the test driver.
extern std::string wxTheCurrentTestClass, wxTheCurrentTestMethod;
} // namespace wxPrivate
inline std::string wxGetCurrentTestName()
{
std::string s = wxPrivate::wxTheCurrentTestClass;
if ( !s.empty() && !wxPrivate::wxTheCurrentTestMethod.empty() )
s += "::";
s += wxPrivate::wxTheCurrentTestMethod;
return s;
}
// Notice that the use of this macro unconditionally changes the protection for
// everything that follows it to "public". This is necessary to allow taking
// the address of the runTest() method in CPPUNIT_TEST_SUITE_REGISTRATION()
// below and there just doesn't seem to be any way around it.
#define CPPUNIT_TEST_SUITE(testclass) \
public: \
void runTest() wxOVERRIDE \
{ \
using namespace wxPrivate; \
TempStringAssign setClass(wxTheCurrentTestClass, #testclass)
#define CPPUNIT_TEST(testname) \
SECTION(#testname) \
{ \
TempStringAssign setMethod(wxTheCurrentTestMethod, #testname); \
setUp(); \
try \
{ \
testname(); \
} \
catch ( ... ) \
{ \
tearDown(); \
throw; \
} \
tearDown(); \
}
#define CPPUNIT_TEST_SUITE_END() \
} \
struct EatNextSemicolon
#define wxREGISTER_UNIT_TEST_WITH_TAGS(testclass, tags) \
METHOD_AS_TEST_CASE(testclass::runTest, #testclass, tags) \
struct EatNextSemicolon
#define CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(testclass, suitename) \
wxREGISTER_UNIT_TEST_WITH_TAGS(testclass, "[" suitename "]")
// Existings tests always use both this macro and the named registration one
// above, but we can't register the same test case twice with CATCH, so simply
// ignore this one.
#define CPPUNIT_TEST_SUITE_REGISTRATION(testclass) \
struct EatNextSemicolon
// ----------------------------------------------------------------------------
// wxWidgets-specific macros
// ----------------------------------------------------------------------------
// Convenient variant of INFO() which uses wxString::Format() internally.
#define wxINFO_FMT_HELPER(fmt, ...) \
wxString::Format(fmt, __VA_ARGS__).ToStdString(wxConvUTF8)
#define wxINFO_FMT(...) INFO(wxINFO_FMT_HELPER(__VA_ARGS__))
// Use this macro to assert with the given formatted message (it should contain
// the format string and arguments in a separate pair of parentheses)
#define WX_ASSERT_MESSAGE(msg, cond) \
CPPUNIT_ASSERT_MESSAGE(std::string(wxString::Format msg .mb_str(wxConvLibc)), (cond))
#define WX_ASSERT_EQUAL_MESSAGE(msg, expected, actual) \
CPPUNIT_ASSERT_EQUAL_MESSAGE(std::string(wxString::Format msg .mb_str(wxConvLibc)), \
(expected), (actual))
#endif // _WX_CATCH_CPPUNIT_H_