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29 
30 // Tests Google Mock's functionality that depends on exceptions.
31 
32 #include <exception>
33 
34 #include "gmock/gmock.h"
35 #include "gtest/gtest.h"
36 
37 #if GTEST_HAS_EXCEPTIONS
38 namespace {
39 
40 using testing::HasSubstr;
41 
42 using testing::internal::GoogleTestFailureException;
43 
44 // A type that cannot be default constructed.
45 class NonDefaultConstructible {
46  public:
47   explicit NonDefaultConstructible(int /* dummy */) {}
48 };
49 
50 class MockFoo {
51  public:
52   // A mock method that returns a user-defined type.  Google Mock
53   // doesn't know what the default value for this type is.
54   MOCK_METHOD0(GetNonDefaultConstructible, NonDefaultConstructible());
55 };
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 }  // unnamed namespace
80 #endif
81