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test/cxxtest/sample/TraitsTest.h

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+#ifndef __TRAITSTEST_H
+#define __TRAITSTEST_H
+
+//
+// This example shows how to use TS_ASSERT_EQUALS for your own classes
+//
+#include <cxxtest/TestSuite.h>
+#include <cxxtest/ValueTraits.h>
+
+//
+// Define your class with operator==
+//
+#include <stdio.h>
+#include <string.h>
+
+class Pet
+{
+    char _name[128];
+public:
+    Pet( const char *petName ) { strcpy( _name, petName ); }
+
+    const char *name() const { return _name; }
+
+    bool operator== ( const Pet &other ) const
+    {
+        return !strcmp( name(), other.name() );
+    }
+};
+
+//
+// Instantiate CxxTest::ValueTraits<*your class*>
+// Note: Most compilers do not require that you define both
+//       ValueTraits<const T> and ValueTraits<T>, but some do.
+//
+namespace CxxTest
+{
+    CXXTEST_TEMPLATE_INSTANTIATION
+    class ValueTraits<const Pet>
+    {
+        char _asString[256];
+
+    public:
+        ValueTraits( const Pet &pet ) { sprintf( _asString, "Pet(\"%s\")", pet.name() ); }
+        const char *asString() const { return _asString; }
+    };
+
+    CXXTEST_COPY_CONST_TRAITS( Pet );
+}
+
+//
+// Here's how it works
+//
+class TestFunky : public CxxTest::TestSuite
+{
+public:
+    void testPets()
+    {
+        Pet pet1("dog"), pet2("cat");
+        TS_ASSERT_EQUALS( pet1, pet2 );
+        Pet cat("cat"), gato("cat");
+        TS_ASSERT_DIFFERS( cat, gato );
+#ifdef _CXXTEST_HAVE_STD
+        typedef CXXTEST_STD(string) String;
+        TS_ASSERT_EQUALS( String("Hello"), String("World!") );
+#endif // _CXXTEST_HAVE_STD
+    }
+};
+
+#endif // __TRAITSTEST_H