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     30 // Author: wan (at) google.com (Zhanyong Wan)
     31 
     32 // Tests Google Mock's functionality that depends on exceptions.
     33 
     34 #include "gmock/gmock.h"
     35 #include "gtest/gtest.h"
     36 
     37 namespace {
     38 
     39 using testing::HasSubstr;
     40 using testing::internal::GoogleTestFailureException;
     41 
     42 // A type that cannot be default constructed.
     43 class NonDefaultConstructible {
     44  public:
     45   explicit NonDefaultConstructible(int /* dummy */) {}
     46 };
     47 
     48 class MockFoo {
     49  public:
     50   // A mock method that returns a user-defined type.  Google Mock
     51   // doesn't know what the default value for this type is.
     52   MOCK_METHOD0(GetNonDefaultConstructible, NonDefaultConstructible());
     53 };
     54 
     55 #if GTEST_HAS_EXCEPTIONS
     56 
     57 TEST(DefaultValueTest, ThrowsRuntimeErrorWhenNoDefaultValue) {
     58   MockFoo mock;
     59   try {
     60     // No expectation is set on this method, so Google Mock must
     61     // return the default value.  However, since Google Mock knows
     62     // nothing about the return type, it doesn't know what to return,
     63     // and has to throw (when exceptions are enabled) or abort
     64     // (otherwise).
     65     mock.GetNonDefaultConstructible();
     66     FAIL() << "GetNonDefaultConstructible()'s return type has no default "
     67            << "value, so Google Mock should have thrown.";
     68   } catch (const GoogleTestFailureException& /* unused */) {
     69     FAIL() << "Google Test does not try to catch an exception of type "
     70            << "GoogleTestFailureException, which is used for reporting "
     71            << "a failure to other testing frameworks.  Google Mock should "
     72            << "not throw a GoogleTestFailureException as it will kill the "
     73            << "entire test program instead of just the current TEST.";
     74   } catch (const std::exception& ex) {
     75     EXPECT_THAT(ex.what(), HasSubstr("has no default value"));
     76   }
     77 }
     78 
     79 #endif
     80 
     81 }  // unnamed namespace
     82