googlemock/test/gmock_ex_test.cc

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0030 // Author: wan@google.com (Zhanyong Wan)
0031
0032 // Tests Google Mock's functionality that depends on exceptions.
0033
0034 #include "gmock/gmock.h"
0035 #include "gtest/gtest.h"
0036
0037 namespace {
0038
0039 using testing::HasSubstr;
0040 using testing::internal::GoogleTestFailureException;
0041
0042 // A type that cannot be default constructed.
0043 class NonDefaultConstructible {
0044  public:
0045   explicit NonDefaultConstructible(int /* dummy */) {}
0046 };
0047
0048 class MockFoo {
0049  public:
0050   // A mock method that returns a user-defined type.  Google Mock
0051   // doesn't know what the default value for this type is.
0052   MOCK_METHOD0(GetNonDefaultConstructible, NonDefaultConstructible());
0053 };
0054
0055 #if GTEST_HAS_EXCEPTIONS
0056
0057 TEST(DefaultValueTest, ThrowsRuntimeErrorWhenNoDefaultValue) {
0058   MockFoo mock;
0059   try {
0060     // No expectation is set on this method, so Google Mock must
0061     // return the default value.  However, since Google Mock knows
0062     // nothing about the return type, it doesn't know what to return,
0063     // and has to throw (when exceptions are enabled) or abort
0064     // (otherwise).
0065     mock.GetNonDefaultConstructible();
0066     FAIL() << "GetNonDefaultConstructible()'s return type has no default "
0067            << "value, so Google Mock should have thrown.";
0068   } catch (const GoogleTestFailureException& /* unused */) {
0069     FAIL() << "Google Test does not try to catch an exception of type "
0070            << "GoogleTestFailureException, which is used for reporting "
0071            << "a failure to other testing frameworks.  Google Mock should "
0072            << "not throw a GoogleTestFailureException as it will kill the "
0073            << "entire test program instead of just the current TEST.";
0074   } catch (const std::exception& ex) {
0075     EXPECT_THAT(ex.what(), HasSubstr("has no default value"));
0076   }
0077 }
0078
0079 #endif
0080
0081 }  // unnamed namespace