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// Copyright 2013, Google Inc.

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// Author: wan@google.com (Zhanyong Wan)

// Tests Google Mock's functionality that depends on exceptions.

#include "gmock/gmock.h"

#include "gtest/gtest.h"

namespace {

using testing::HasSubstr;

using testing::internal::GoogleTestFailureException;

// A type that cannot be default constructed.

class NonDefaultConstructible {

 public:

  explicit NonDefaultConstructible(int /* dummy */) {}

};

class MockFoo {

 public:

  // A mock method that returns a user-defined type.  Google Mock

  // doesn't know what the default value for this type is.

  MOCK_METHOD0(GetNonDefaultConstructible, NonDefaultConstructible());

};

#if GTEST_HAS_EXCEPTIONS

TEST(DefaultValueTest, ThrowsRuntimeErrorWhenNoDefaultValue) {

  MockFoo mock;

  try {

    // No expectation is set on this method, so Google Mock must

    // return the default value.  However, since Google Mock knows

    // nothing about the return type, it doesn't know what to return,

    // and has to throw (when exceptions are enabled) or abort

    // (otherwise).

    mock.GetNonDefaultConstructible();

    FAIL() << "GetNonDefaultConstructible()'s return type has no default "

           << "value, so Google Mock should have thrown.";

  } catch (const GoogleTestFailureException& /* unused */) {

    FAIL() << "Google Test does not try to catch an exception of type "

           << "GoogleTestFailureException, which is used for reporting "

           << "a failure to other testing frameworks.  Google Mock should "

           << "not throw a GoogleTestFailureException as it will kill the "

           << "entire test program instead of just the current TEST.";

  } catch (const std::exception& ex) {

    EXPECT_THAT(ex.what(), HasSubstr("has no default value"));

  }

}

#endif

}  // unnamed namespace