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provide our own implementation of wxStrnlen if it's not available; add tests for it

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58069 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Francesco Montorsi
2009-01-13 12:01:30 +00:00
parent 0c9464ce6b
commit 7c5ac499c8
6 changed files with 75 additions and 102 deletions
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43
tests/strings/crt.cpp
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@@ -4,7 +4,7 @@
// Author: Vaclav Slavik
// Created: 2004-06-03
// RCS-ID: $Id$
// Copyright: (c) 2004 Vaclav Slavik
// Copyright: (c) 2004 Vaclav Slavik
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
@@ -48,6 +48,7 @@ private:
CPPUNIT_TEST( Strspn );
CPPUNIT_TEST( Strcspn );
CPPUNIT_TEST( Strpbrk );
CPPUNIT_TEST( Strnlen );
CPPUNIT_TEST_SUITE_END();
void SetGetEnv();
@@ -55,6 +56,7 @@ private:
void Strspn();
void Strcspn();
void Strpbrk();
void Strnlen();
DECLARE_NO_COPY_CLASS(CrtTestCase)
};
@@ -209,3 +211,42 @@ void CrtTestCase::Strpbrk()
CPPUNIT_ASSERT_EQUAL( (wchar_t *)NULL, wxStrpbrk(strWX.c_str(), L"xyz") );
}
void CrtTestCase::Strnlen()
{
// the following calls should not segfault/crash because when passing 0
// as maxlen, no bytes at all should be read from the given buffer
// (which is NULL in this case!)
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen((const char*)NULL, 0) );
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen((const wchar_t*)NULL, 0) );
// other misc tests for wxStrnlen(const char*, size_t)
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen("", 0) );
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen("", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen("1234", 0) );
CPPUNIT_ASSERT_EQUAL( (size_t)2, wxStrnlen("1234", 2) );
CPPUNIT_ASSERT_EQUAL( (size_t)4, wxStrnlen("1234", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)7, wxStrnlen("1234567", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)8, wxStrnlen("12345678", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)8, wxStrnlen("123456789", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)9, wxStrnlen("123456789", 12) );
// other misc tests for wxStrnlen(const wchar_t*, size_t)
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen(L"", 0) );
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen(L"", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)0, wxStrnlen(L"1234", 0) );
CPPUNIT_ASSERT_EQUAL( (size_t)2, wxStrnlen(L"1234", 2) );
CPPUNIT_ASSERT_EQUAL( (size_t)4, wxStrnlen(L"1234", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)7, wxStrnlen(L"1234567", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)8, wxStrnlen(L"12345678", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)8, wxStrnlen(L"123456789", 8) );
CPPUNIT_ASSERT_EQUAL( (size_t)9, wxStrnlen(L"123456789", 12) );
// wxStrlen() is only for NULL-terminated strings:
CPPUNIT_ASSERT_EQUAL( (size_t)4, wxStrnlen("1234" "\0" "78", 12) );
CPPUNIT_ASSERT_EQUAL( (size_t)4, wxStrnlen(L"1234" L"\0" L"5678", 12) );
}