gmock_ex_test.cc revision 13481 
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30// Author: wan@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
37namespace {
38
39using testing::HasSubstr;
40using testing::internal::GoogleTestFailureException;
41
42// A type that cannot be default constructed.
43class NonDefaultConstructible {
44 public:
45  explicit NonDefaultConstructible(int /* dummy */) {}
46};
47
48class 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
57TEST(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