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Diffstat (limited to 'src/googletest/googlemock/test/gmock-spec-builders_test.cc')
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diff --git a/src/googletest/googlemock/test/gmock-spec-builders_test.cc b/src/googletest/googlemock/test/gmock-spec-builders_test.cc new file mode 100644 index 00000000..59ea87c8 --- /dev/null +++ b/src/googletest/googlemock/test/gmock-spec-builders_test.cc @@ -0,0 +1,2644 @@ +// Copyright 2007, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +// Author: wan@google.com (Zhanyong Wan) + +// Google Mock - a framework for writing C++ mock classes. +// +// This file tests the spec builder syntax. + +#include "gmock/gmock-spec-builders.h" + +#include <ostream> // NOLINT +#include <sstream> +#include <string> + +#include "gmock/gmock.h" +#include "gmock/internal/gmock-port.h" +#include "gtest/gtest.h" +#include "gtest/gtest-spi.h" +#include "gtest/internal/gtest-port.h" + +namespace testing { +namespace internal { + +// Helper class for testing the Expectation class template. +class ExpectationTester { + public: + // Sets the call count of the given expectation to the given number. + void SetCallCount(int n, ExpectationBase* exp) { + exp->call_count_ = n; + } +}; + +} // namespace internal +} // namespace testing + +namespace { + +using testing::_; +using testing::AnyNumber; +using testing::AtLeast; +using testing::AtMost; +using testing::Between; +using testing::Cardinality; +using testing::CardinalityInterface; +using testing::ContainsRegex; +using testing::Const; +using testing::DoAll; +using testing::DoDefault; +using testing::Eq; +using testing::Expectation; +using testing::ExpectationSet; +using testing::GMOCK_FLAG(verbose); +using testing::Gt; +using testing::InSequence; +using testing::Invoke; +using testing::InvokeWithoutArgs; +using testing::IsNotSubstring; +using testing::IsSubstring; +using testing::Lt; +using testing::Message; +using testing::Mock; +using testing::NaggyMock; +using testing::Ne; +using testing::Return; +using testing::Sequence; +using testing::SetArgPointee; +using testing::internal::ExpectationTester; +using testing::internal::FormatFileLocation; +using testing::internal::kErrorVerbosity; +using testing::internal::kInfoVerbosity; +using testing::internal::kWarningVerbosity; +using testing::internal::linked_ptr; +using testing::internal::string; + +#if GTEST_HAS_STREAM_REDIRECTION +using testing::HasSubstr; +using testing::internal::CaptureStdout; +using testing::internal::GetCapturedStdout; +#endif + +class Incomplete; + +class MockIncomplete { + public: + // This line verifies that a mock method can take a by-reference + // argument of an incomplete type. + MOCK_METHOD1(ByRefFunc, void(const Incomplete& x)); +}; + +// Tells Google Mock how to print a value of type Incomplete. +void PrintTo(const Incomplete& x, ::std::ostream* os); + +TEST(MockMethodTest, CanInstantiateWithIncompleteArgType) { + // Even though this mock class contains a mock method that takes + // by-reference an argument whose type is incomplete, we can still + // use the mock, as long as Google Mock knows how to print the + // argument. + MockIncomplete incomplete; + EXPECT_CALL(incomplete, ByRefFunc(_)) + .Times(AnyNumber()); +} + +// The definition of the printer for the argument type doesn't have to +// be visible where the mock is used. +void PrintTo(const Incomplete& /* x */, ::std::ostream* os) { + *os << "incomplete"; +} + +class Result {}; + +// A type that's not default constructible. +class NonDefaultConstructible { + public: + explicit NonDefaultConstructible(int /* dummy */) {} +}; + +class MockA { + public: + MockA() {} + + MOCK_METHOD1(DoA, void(int n)); + MOCK_METHOD1(ReturnResult, Result(int n)); + MOCK_METHOD0(ReturnNonDefaultConstructible, NonDefaultConstructible()); + MOCK_METHOD2(Binary, bool(int x, int y)); + MOCK_METHOD2(ReturnInt, int(int x, int y)); + + private: + GTEST_DISALLOW_COPY_AND_ASSIGN_(MockA); +}; + +class MockB { + public: + MockB() {} + + MOCK_CONST_METHOD0(DoB, int()); // NOLINT + MOCK_METHOD1(DoB, int(int n)); // NOLINT + + private: + GTEST_DISALLOW_COPY_AND_ASSIGN_(MockB); +}; + +class ReferenceHoldingMock { + public: + ReferenceHoldingMock() {} + + MOCK_METHOD1(AcceptReference, void(linked_ptr<MockA>*)); + + private: + GTEST_DISALLOW_COPY_AND_ASSIGN_(ReferenceHoldingMock); +}; + +// Tests that EXPECT_CALL and ON_CALL compile in a presence of macro +// redefining a mock method name. This could happen, for example, when +// the tested code #includes Win32 API headers which define many APIs +// as macros, e.g. #define TextOut TextOutW. + +#define Method MethodW + +class CC { + public: + virtual ~CC() {} + virtual int Method() = 0; +}; +class MockCC : public CC { + public: + MockCC() {} + + MOCK_METHOD0(Method, int()); + + private: + GTEST_DISALLOW_COPY_AND_ASSIGN_(MockCC); +}; + +// Tests that a method with expanded name compiles. +TEST(OnCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) { + MockCC cc; + ON_CALL(cc, Method()); +} + +// Tests that the method with expanded name not only compiles but runs +// and returns a correct value, too. +TEST(OnCallSyntaxTest, WorksWithMethodNameExpandedFromMacro) { + MockCC cc; + ON_CALL(cc, Method()).WillByDefault(Return(42)); + EXPECT_EQ(42, cc.Method()); +} + +// Tests that a method with expanded name compiles. +TEST(ExpectCallSyntaxTest, CompilesWithMethodNameExpandedFromMacro) { + MockCC cc; + EXPECT_CALL(cc, Method()); + cc.Method(); +} + +// Tests that it works, too. +TEST(ExpectCallSyntaxTest, WorksWithMethodNameExpandedFromMacro) { + MockCC cc; + EXPECT_CALL(cc, Method()).WillOnce(Return(42)); + EXPECT_EQ(42, cc.Method()); +} + +#undef Method // Done with macro redefinition tests. + +// Tests that ON_CALL evaluates its arguments exactly once as promised +// by Google Mock. +TEST(OnCallSyntaxTest, EvaluatesFirstArgumentOnce) { + MockA a; + MockA* pa = &a; + + ON_CALL(*pa++, DoA(_)); + EXPECT_EQ(&a + 1, pa); +} + +TEST(OnCallSyntaxTest, EvaluatesSecondArgumentOnce) { + MockA a; + int n = 0; + + ON_CALL(a, DoA(n++)); + EXPECT_EQ(1, n); +} + +// Tests that the syntax of ON_CALL() is enforced at run time. + +TEST(OnCallSyntaxTest, WithIsOptional) { + MockA a; + + ON_CALL(a, DoA(5)) + .WillByDefault(Return()); + ON_CALL(a, DoA(_)) + .With(_) + .WillByDefault(Return()); +} + +TEST(OnCallSyntaxTest, WithCanAppearAtMostOnce) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + ON_CALL(a, ReturnResult(_)) + .With(_) + .With(_) + .WillByDefault(Return(Result())); + }, ".With() cannot appear more than once in an ON_CALL()"); +} + +TEST(OnCallSyntaxTest, WillByDefaultIsMandatory) { + MockA a; + + EXPECT_DEATH_IF_SUPPORTED({ + ON_CALL(a, DoA(5)); + a.DoA(5); + }, ""); +} + +TEST(OnCallSyntaxTest, WillByDefaultCanAppearAtMostOnce) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + ON_CALL(a, DoA(5)) + .WillByDefault(Return()) + .WillByDefault(Return()); + }, ".WillByDefault() must appear exactly once in an ON_CALL()"); +} + +// Tests that EXPECT_CALL evaluates its arguments exactly once as +// promised by Google Mock. +TEST(ExpectCallSyntaxTest, EvaluatesFirstArgumentOnce) { + MockA a; + MockA* pa = &a; + + EXPECT_CALL(*pa++, DoA(_)); + a.DoA(0); + EXPECT_EQ(&a + 1, pa); +} + +TEST(ExpectCallSyntaxTest, EvaluatesSecondArgumentOnce) { + MockA a; + int n = 0; + + EXPECT_CALL(a, DoA(n++)); + a.DoA(0); + EXPECT_EQ(1, n); +} + +// Tests that the syntax of EXPECT_CALL() is enforced at run time. + +TEST(ExpectCallSyntaxTest, WithIsOptional) { + MockA a; + + EXPECT_CALL(a, DoA(5)) + .Times(0); + EXPECT_CALL(a, DoA(6)) + .With(_) + .Times(0); +} + +TEST(ExpectCallSyntaxTest, WithCanAppearAtMostOnce) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(6)) + .With(_) + .With(_); + }, ".With() cannot appear more than once in an EXPECT_CALL()"); + + a.DoA(6); +} + +TEST(ExpectCallSyntaxTest, WithMustBeFirstClause) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .Times(1) + .With(_); + }, ".With() must be the first clause in an EXPECT_CALL()"); + + a.DoA(1); + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(2)) + .WillOnce(Return()) + .With(_); + }, ".With() must be the first clause in an EXPECT_CALL()"); + + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, TimesCanBeInferred) { + MockA a; + + EXPECT_CALL(a, DoA(1)) + .WillOnce(Return()); + + EXPECT_CALL(a, DoA(2)) + .WillOnce(Return()) + .WillRepeatedly(Return()); + + a.DoA(1); + a.DoA(2); + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, TimesCanAppearAtMostOnce) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .Times(1) + .Times(2); + }, ".Times() cannot appear more than once in an EXPECT_CALL()"); + + a.DoA(1); + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, TimesMustBeBeforeInSequence) { + MockA a; + Sequence s; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .InSequence(s) + .Times(1); + }, ".Times() cannot appear after "); + + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, InSequenceIsOptional) { + MockA a; + Sequence s; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(2)) + .InSequence(s); + + a.DoA(1); + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, InSequenceCanAppearMultipleTimes) { + MockA a; + Sequence s1, s2; + + EXPECT_CALL(a, DoA(1)) + .InSequence(s1, s2) + .InSequence(s1); + + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, InSequenceMustBeBeforeAfter) { + MockA a; + Sequence s; + + Expectation e = EXPECT_CALL(a, DoA(1)) + .Times(AnyNumber()); + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(2)) + .After(e) + .InSequence(s); + }, ".InSequence() cannot appear after "); + + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, InSequenceMustBeBeforeWillOnce) { + MockA a; + Sequence s; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .WillOnce(Return()) + .InSequence(s); + }, ".InSequence() cannot appear after "); + + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, AfterMustBeBeforeWillOnce) { + MockA a; + + Expectation e = EXPECT_CALL(a, DoA(1)); + EXPECT_NONFATAL_FAILURE({ + EXPECT_CALL(a, DoA(2)) + .WillOnce(Return()) + .After(e); + }, ".After() cannot appear after "); + + a.DoA(1); + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, WillIsOptional) { + MockA a; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(2)) + .WillOnce(Return()); + + a.DoA(1); + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, WillCanAppearMultipleTimes) { + MockA a; + + EXPECT_CALL(a, DoA(1)) + .Times(AnyNumber()) + .WillOnce(Return()) + .WillOnce(Return()) + .WillOnce(Return()); +} + +TEST(ExpectCallSyntaxTest, WillMustBeBeforeWillRepeatedly) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .WillRepeatedly(Return()) + .WillOnce(Return()); + }, ".WillOnce() cannot appear after "); + + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, WillRepeatedlyIsOptional) { + MockA a; + + EXPECT_CALL(a, DoA(1)) + .WillOnce(Return()); + EXPECT_CALL(a, DoA(2)) + .WillOnce(Return()) + .WillRepeatedly(Return()); + + a.DoA(1); + a.DoA(2); + a.DoA(2); +} + +TEST(ExpectCallSyntaxTest, WillRepeatedlyCannotAppearMultipleTimes) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .WillRepeatedly(Return()) + .WillRepeatedly(Return()); + }, ".WillRepeatedly() cannot appear more than once in an " + "EXPECT_CALL()"); +} + +TEST(ExpectCallSyntaxTest, WillRepeatedlyMustBeBeforeRetiresOnSaturation) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .RetiresOnSaturation() + .WillRepeatedly(Return()); + }, ".WillRepeatedly() cannot appear after "); +} + +TEST(ExpectCallSyntaxTest, RetiresOnSaturationIsOptional) { + MockA a; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(1)) + .RetiresOnSaturation(); + + a.DoA(1); + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, RetiresOnSaturationCannotAppearMultipleTimes) { + MockA a; + + EXPECT_NONFATAL_FAILURE({ // NOLINT + EXPECT_CALL(a, DoA(1)) + .RetiresOnSaturation() + .RetiresOnSaturation(); + }, ".RetiresOnSaturation() cannot appear more than once"); + + a.DoA(1); +} + +TEST(ExpectCallSyntaxTest, DefaultCardinalityIsOnce) { + { + MockA a; + EXPECT_CALL(a, DoA(1)); + a.DoA(1); + } + EXPECT_NONFATAL_FAILURE({ // NOLINT + MockA a; + EXPECT_CALL(a, DoA(1)); + }, "to be called once"); + EXPECT_NONFATAL_FAILURE({ // NOLINT + MockA a; + EXPECT_CALL(a, DoA(1)); + a.DoA(1); + a.DoA(1); + }, "to be called once"); +} + +#if GTEST_HAS_STREAM_REDIRECTION + +// Tests that Google Mock doesn't print a warning when the number of +// WillOnce() is adequate. +TEST(ExpectCallSyntaxTest, DoesNotWarnOnAdequateActionCount) { + CaptureStdout(); + { + MockB b; + + // It's always fine to omit WillOnce() entirely. + EXPECT_CALL(b, DoB()) + .Times(0); + EXPECT_CALL(b, DoB(1)) + .Times(AtMost(1)); + EXPECT_CALL(b, DoB(2)) + .Times(1) + .WillRepeatedly(Return(1)); + + // It's fine for the number of WillOnce()s to equal the upper bound. + EXPECT_CALL(b, DoB(3)) + .Times(Between(1, 2)) + .WillOnce(Return(1)) + .WillOnce(Return(2)); + + // It's fine for the number of WillOnce()s to be smaller than the + // upper bound when there is a WillRepeatedly(). + EXPECT_CALL(b, DoB(4)) + .Times(AtMost(3)) + .WillOnce(Return(1)) + .WillRepeatedly(Return(2)); + + // Satisfies the above expectations. + b.DoB(2); + b.DoB(3); + } + EXPECT_STREQ("", GetCapturedStdout().c_str()); +} + +// Tests that Google Mock warns on having too many actions in an +// expectation compared to its cardinality. +TEST(ExpectCallSyntaxTest, WarnsOnTooManyActions) { + CaptureStdout(); + { + MockB b; + + // Warns when the number of WillOnce()s is larger than the upper bound. + EXPECT_CALL(b, DoB()) + .Times(0) + .WillOnce(Return(1)); // #1 + EXPECT_CALL(b, DoB()) + .Times(AtMost(1)) + .WillOnce(Return(1)) + .WillOnce(Return(2)); // #2 + EXPECT_CALL(b, DoB(1)) + .Times(1) + .WillOnce(Return(1)) + .WillOnce(Return(2)) + .RetiresOnSaturation(); // #3 + + // Warns when the number of WillOnce()s equals the upper bound and + // there is a WillRepeatedly(). + EXPECT_CALL(b, DoB()) + .Times(0) + .WillRepeatedly(Return(1)); // #4 + EXPECT_CALL(b, DoB(2)) + .Times(1) + .WillOnce(Return(1)) + .WillRepeatedly(Return(2)); // #5 + + // Satisfies the above expectations. + b.DoB(1); + b.DoB(2); + } + const std::string output = GetCapturedStdout(); + EXPECT_PRED_FORMAT2( + IsSubstring, + "Too many actions specified in EXPECT_CALL(b, DoB())...\n" + "Expected to be never called, but has 1 WillOnce().", + output); // #1 + EXPECT_PRED_FORMAT2( + IsSubstring, + "Too many actions specified in EXPECT_CALL(b, DoB())...\n" + "Expected to be called at most once, " + "but has 2 WillOnce()s.", + output); // #2 + EXPECT_PRED_FORMAT2( + IsSubstring, + "Too many actions specified in EXPECT_CALL(b, DoB(1))...\n" + "Expected to be called once, but has 2 WillOnce()s.", + output); // #3 + EXPECT_PRED_FORMAT2( + IsSubstring, + "Too many actions specified in EXPECT_CALL(b, DoB())...\n" + "Expected to be never called, but has 0 WillOnce()s " + "and a WillRepeatedly().", + output); // #4 + EXPECT_PRED_FORMAT2( + IsSubstring, + "Too many actions specified in EXPECT_CALL(b, DoB(2))...\n" + "Expected to be called once, but has 1 WillOnce() " + "and a WillRepeatedly().", + output); // #5 +} + +// Tests that Google Mock warns on having too few actions in an +// expectation compared to its cardinality. +TEST(ExpectCallSyntaxTest, WarnsOnTooFewActions) { + MockB b; + + EXPECT_CALL(b, DoB()) + .Times(Between(2, 3)) + .WillOnce(Return(1)); + + CaptureStdout(); + b.DoB(); + const std::string output = GetCapturedStdout(); + EXPECT_PRED_FORMAT2( + IsSubstring, + "Too few actions specified in EXPECT_CALL(b, DoB())...\n" + "Expected to be called between 2 and 3 times, " + "but has only 1 WillOnce().", + output); + b.DoB(); +} + +#endif // GTEST_HAS_STREAM_REDIRECTION + +// Tests the semantics of ON_CALL(). + +// Tests that the built-in default action is taken when no ON_CALL() +// is specified. +TEST(OnCallTest, TakesBuiltInDefaultActionWhenNoOnCall) { + MockB b; + EXPECT_CALL(b, DoB()); + + EXPECT_EQ(0, b.DoB()); +} + +// Tests that the built-in default action is taken when no ON_CALL() +// matches the invocation. +TEST(OnCallTest, TakesBuiltInDefaultActionWhenNoOnCallMatches) { + MockB b; + ON_CALL(b, DoB(1)) + .WillByDefault(Return(1)); + EXPECT_CALL(b, DoB(_)); + + EXPECT_EQ(0, b.DoB(2)); +} + +// Tests that the last matching ON_CALL() action is taken. +TEST(OnCallTest, PicksLastMatchingOnCall) { + MockB b; + ON_CALL(b, DoB(_)) + .WillByDefault(Return(3)); + ON_CALL(b, DoB(2)) + .WillByDefault(Return(2)); + ON_CALL(b, DoB(1)) + .WillByDefault(Return(1)); + EXPECT_CALL(b, DoB(_)); + + EXPECT_EQ(2, b.DoB(2)); +} + +// Tests the semantics of EXPECT_CALL(). + +// Tests that any call is allowed when no EXPECT_CALL() is specified. +TEST(ExpectCallTest, AllowsAnyCallWhenNoSpec) { + MockB b; + EXPECT_CALL(b, DoB()); + // There is no expectation on DoB(int). + + b.DoB(); + + // DoB(int) can be called any number of times. + b.DoB(1); + b.DoB(2); +} + +// Tests that the last matching EXPECT_CALL() fires. +TEST(ExpectCallTest, PicksLastMatchingExpectCall) { + MockB b; + EXPECT_CALL(b, DoB(_)) + .WillRepeatedly(Return(2)); + EXPECT_CALL(b, DoB(1)) + .WillRepeatedly(Return(1)); + + EXPECT_EQ(1, b.DoB(1)); +} + +// Tests lower-bound violation. +TEST(ExpectCallTest, CatchesTooFewCalls) { + EXPECT_NONFATAL_FAILURE({ // NOLINT + MockB b; + EXPECT_CALL(b, DoB(5)) + .Times(AtLeast(2)); + + b.DoB(5); + }, "Actual function call count doesn't match EXPECT_CALL(b, DoB(5))...\n" + " Expected: to be called at least twice\n" + " Actual: called once - unsatisfied and active"); +} + +// Tests that the cardinality can be inferred when no Times(...) is +// specified. +TEST(ExpectCallTest, InfersCardinalityWhenThereIsNoWillRepeatedly) { + { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillOnce(Return(2)); + + EXPECT_EQ(1, b.DoB()); + EXPECT_EQ(2, b.DoB()); + } + + EXPECT_NONFATAL_FAILURE({ // NOLINT + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillOnce(Return(2)); + + EXPECT_EQ(1, b.DoB()); + }, "to be called twice"); + + { // NOLINT + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillOnce(Return(2)); + + EXPECT_EQ(1, b.DoB()); + EXPECT_EQ(2, b.DoB()); + EXPECT_NONFATAL_FAILURE(b.DoB(), "to be called twice"); + } +} + +TEST(ExpectCallTest, InfersCardinality1WhenThereIsWillRepeatedly) { + { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillRepeatedly(Return(2)); + + EXPECT_EQ(1, b.DoB()); + } + + { // NOLINT + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillRepeatedly(Return(2)); + + EXPECT_EQ(1, b.DoB()); + EXPECT_EQ(2, b.DoB()); + EXPECT_EQ(2, b.DoB()); + } + + EXPECT_NONFATAL_FAILURE({ // NOLINT + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillRepeatedly(Return(2)); + }, "to be called at least once"); +} + +// Tests that the n-th action is taken for the n-th matching +// invocation. +TEST(ExpectCallTest, NthMatchTakesNthAction) { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillOnce(Return(2)) + .WillOnce(Return(3)); + + EXPECT_EQ(1, b.DoB()); + EXPECT_EQ(2, b.DoB()); + EXPECT_EQ(3, b.DoB()); +} + +// Tests that the WillRepeatedly() action is taken when the WillOnce(...) +// list is exhausted. +TEST(ExpectCallTest, TakesRepeatedActionWhenWillListIsExhausted) { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)) + .WillRepeatedly(Return(2)); + + EXPECT_EQ(1, b.DoB()); + EXPECT_EQ(2, b.DoB()); + EXPECT_EQ(2, b.DoB()); +} + +#if GTEST_HAS_STREAM_REDIRECTION + +// Tests that the default action is taken when the WillOnce(...) list is +// exhausted and there is no WillRepeatedly(). +TEST(ExpectCallTest, TakesDefaultActionWhenWillListIsExhausted) { + MockB b; + EXPECT_CALL(b, DoB(_)) + .Times(1); + EXPECT_CALL(b, DoB()) + .Times(AnyNumber()) + .WillOnce(Return(1)) + .WillOnce(Return(2)); + + CaptureStdout(); + EXPECT_EQ(0, b.DoB(1)); // Shouldn't generate a warning as the + // expectation has no action clause at all. + EXPECT_EQ(1, b.DoB()); + EXPECT_EQ(2, b.DoB()); + const std::string output1 = GetCapturedStdout(); + EXPECT_STREQ("", output1.c_str()); + + CaptureStdout(); + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB()); + const std::string output2 = GetCapturedStdout(); + EXPECT_THAT(output2.c_str(), + HasSubstr("Actions ran out in EXPECT_CALL(b, DoB())...\n" + "Called 3 times, but only 2 WillOnce()s are specified" + " - returning default value.")); + EXPECT_THAT(output2.c_str(), + HasSubstr("Actions ran out in EXPECT_CALL(b, DoB())...\n" + "Called 4 times, but only 2 WillOnce()s are specified" + " - returning default value.")); +} + +TEST(FunctionMockerMessageTest, ReportsExpectCallLocationForExhausedActions) { + MockB b; + std::string expect_call_location = FormatFileLocation(__FILE__, __LINE__ + 1); + EXPECT_CALL(b, DoB()).Times(AnyNumber()).WillOnce(Return(1)); + + EXPECT_EQ(1, b.DoB()); + + CaptureStdout(); + EXPECT_EQ(0, b.DoB()); + const std::string output = GetCapturedStdout(); + // The warning message should contain the call location. + EXPECT_PRED_FORMAT2(IsSubstring, expect_call_location, output); +} + +TEST(FunctionMockerMessageTest, + ReportsDefaultActionLocationOfUninterestingCallsForNaggyMock) { + std::string on_call_location; + CaptureStdout(); + { + NaggyMock<MockB> b; + on_call_location = FormatFileLocation(__FILE__, __LINE__ + 1); + ON_CALL(b, DoB(_)).WillByDefault(Return(0)); + b.DoB(0); + } + EXPECT_PRED_FORMAT2(IsSubstring, on_call_location, GetCapturedStdout()); +} + +#endif // GTEST_HAS_STREAM_REDIRECTION + +// Tests that an uninteresting call performs the default action. +TEST(UninterestingCallTest, DoesDefaultAction) { + // When there is an ON_CALL() statement, the action specified by it + // should be taken. + MockA a; + ON_CALL(a, Binary(_, _)) + .WillByDefault(Return(true)); + EXPECT_TRUE(a.Binary(1, 2)); + + // When there is no ON_CALL(), the default value for the return type + // should be returned. + MockB b; + EXPECT_EQ(0, b.DoB()); +} + +// Tests that an unexpected call performs the default action. +TEST(UnexpectedCallTest, DoesDefaultAction) { + // When there is an ON_CALL() statement, the action specified by it + // should be taken. + MockA a; + ON_CALL(a, Binary(_, _)) + .WillByDefault(Return(true)); + EXPECT_CALL(a, Binary(0, 0)); + a.Binary(0, 0); + bool result = false; + EXPECT_NONFATAL_FAILURE(result = a.Binary(1, 2), + "Unexpected mock function call"); + EXPECT_TRUE(result); + + // When there is no ON_CALL(), the default value for the return type + // should be returned. + MockB b; + EXPECT_CALL(b, DoB(0)) + .Times(0); + int n = -1; + EXPECT_NONFATAL_FAILURE(n = b.DoB(1), + "Unexpected mock function call"); + EXPECT_EQ(0, n); +} + +// Tests that when an unexpected void function generates the right +// failure message. +TEST(UnexpectedCallTest, GeneratesFailureForVoidFunction) { + // First, tests the message when there is only one EXPECT_CALL(). + MockA a1; + EXPECT_CALL(a1, DoA(1)); + a1.DoA(1); + // Ideally we should match the failure message against a regex, but + // EXPECT_NONFATAL_FAILURE doesn't support that, so we test for + // multiple sub-strings instead. + EXPECT_NONFATAL_FAILURE( + a1.DoA(9), + "Unexpected mock function call - returning directly.\n" + " Function call: DoA(9)\n" + "Google Mock tried the following 1 expectation, but it didn't match:"); + EXPECT_NONFATAL_FAILURE( + a1.DoA(9), + " Expected arg #0: is equal to 1\n" + " Actual: 9\n" + " Expected: to be called once\n" + " Actual: called once - saturated and active"); + + // Next, tests the message when there are more than one EXPECT_CALL(). + MockA a2; + EXPECT_CALL(a2, DoA(1)); + EXPECT_CALL(a2, DoA(3)); + a2.DoA(1); + EXPECT_NONFATAL_FAILURE( + a2.DoA(2), + "Unexpected mock function call - returning directly.\n" + " Function call: DoA(2)\n" + "Google Mock tried the following 2 expectations, but none matched:"); + EXPECT_NONFATAL_FAILURE( + a2.DoA(2), + "tried expectation #0: EXPECT_CALL(a2, DoA(1))...\n" + " Expected arg #0: is equal to 1\n" + " Actual: 2\n" + " Expected: to be called once\n" + " Actual: called once - saturated and active"); + EXPECT_NONFATAL_FAILURE( + a2.DoA(2), + "tried expectation #1: EXPECT_CALL(a2, DoA(3))...\n" + " Expected arg #0: is equal to 3\n" + " Actual: 2\n" + " Expected: to be called once\n" + " Actual: never called - unsatisfied and active"); + a2.DoA(3); +} + +// Tests that an unexpected non-void function generates the right +// failure message. +TEST(UnexpectedCallTest, GeneartesFailureForNonVoidFunction) { + MockB b1; + EXPECT_CALL(b1, DoB(1)); + b1.DoB(1); + EXPECT_NONFATAL_FAILURE( + b1.DoB(2), + "Unexpected mock function call - returning default value.\n" + " Function call: DoB(2)\n" + " Returns: 0\n" + "Google Mock tried the following 1 expectation, but it didn't match:"); + EXPECT_NONFATAL_FAILURE( + b1.DoB(2), + " Expected arg #0: is equal to 1\n" + " Actual: 2\n" + " Expected: to be called once\n" + " Actual: called once - saturated and active"); +} + +// Tests that Google Mock explains that an retired expectation doesn't +// match the call. +TEST(UnexpectedCallTest, RetiredExpectation) { + MockB b; + EXPECT_CALL(b, DoB(1)) + .RetiresOnSaturation(); + + b.DoB(1); + EXPECT_NONFATAL_FAILURE( + b.DoB(1), + " Expected: the expectation is active\n" + " Actual: it is retired"); +} + +// Tests that Google Mock explains that an expectation that doesn't +// match the arguments doesn't match the call. +TEST(UnexpectedCallTest, UnmatchedArguments) { + MockB b; + EXPECT_CALL(b, DoB(1)); + + EXPECT_NONFATAL_FAILURE( + b.DoB(2), + " Expected arg #0: is equal to 1\n" + " Actual: 2\n"); + b.DoB(1); +} + +// Tests that Google Mock explains that an expectation with +// unsatisfied pre-requisites doesn't match the call. +TEST(UnexpectedCallTest, UnsatisifiedPrerequisites) { + Sequence s1, s2; + MockB b; + EXPECT_CALL(b, DoB(1)) + .InSequence(s1); + EXPECT_CALL(b, DoB(2)) + .Times(AnyNumber()) + .InSequence(s1); + EXPECT_CALL(b, DoB(3)) + .InSequence(s2); + EXPECT_CALL(b, DoB(4)) + .InSequence(s1, s2); + + ::testing::TestPartResultArray failures; + { + ::testing::ScopedFakeTestPartResultReporter reporter(&failures); + b.DoB(4); + // Now 'failures' contains the Google Test failures generated by + // the above statement. + } + + // There should be one non-fatal failure. + ASSERT_EQ(1, failures.size()); + const ::testing::TestPartResult& r = failures.GetTestPartResult(0); + EXPECT_EQ(::testing::TestPartResult::kNonFatalFailure, r.type()); + + // Verifies that the failure message contains the two unsatisfied + // pre-requisites but not the satisfied one. +#if GTEST_USES_PCRE + EXPECT_THAT(r.message(), ContainsRegex( + // PCRE has trouble using (.|\n) to match any character, but + // supports the (?s) prefix for using . to match any character. + "(?s)the following immediate pre-requisites are not satisfied:\n" + ".*: pre-requisite #0\n" + ".*: pre-requisite #1")); +#elif GTEST_USES_POSIX_RE + EXPECT_THAT(r.message(), ContainsRegex( + // POSIX RE doesn't understand the (?s) prefix, but has no trouble + // with (.|\n). + "the following immediate pre-requisites are not satisfied:\n" + "(.|\n)*: pre-requisite #0\n" + "(.|\n)*: pre-requisite #1")); +#else + // We can only use Google Test's own simple regex. + EXPECT_THAT(r.message(), ContainsRegex( + "the following immediate pre-requisites are not satisfied:")); + EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #0")); + EXPECT_THAT(r.message(), ContainsRegex(": pre-requisite #1")); +#endif // GTEST_USES_PCRE + + b.DoB(1); + b.DoB(3); + b.DoB(4); +} + +TEST(UndefinedReturnValueTest, + ReturnValueIsMandatoryWhenNotDefaultConstructible) { + MockA a; + // TODO(wan@google.com): We should really verify the output message, + // but we cannot yet due to that EXPECT_DEATH only captures stderr + // while Google Mock logs to stdout. +#if GTEST_HAS_EXCEPTIONS + EXPECT_ANY_THROW(a.ReturnNonDefaultConstructible()); +#else + EXPECT_DEATH_IF_SUPPORTED(a.ReturnNonDefaultConstructible(), ""); +#endif +} + +// Tests that an excessive call (one whose arguments match the +// matchers but is called too many times) performs the default action. +TEST(ExcessiveCallTest, DoesDefaultAction) { + // When there is an ON_CALL() statement, the action specified by it + // should be taken. + MockA a; + ON_CALL(a, Binary(_, _)) + .WillByDefault(Return(true)); + EXPECT_CALL(a, Binary(0, 0)); + a.Binary(0, 0); + bool result = false; + EXPECT_NONFATAL_FAILURE(result = a.Binary(0, 0), + "Mock function called more times than expected"); + EXPECT_TRUE(result); + + // When there is no ON_CALL(), the default value for the return type + // should be returned. + MockB b; + EXPECT_CALL(b, DoB(0)) + .Times(0); + int n = -1; + EXPECT_NONFATAL_FAILURE(n = b.DoB(0), + "Mock function called more times than expected"); + EXPECT_EQ(0, n); +} + +// Tests that when a void function is called too many times, +// the failure message contains the argument values. +TEST(ExcessiveCallTest, GeneratesFailureForVoidFunction) { + MockA a; + EXPECT_CALL(a, DoA(_)) + .Times(0); + EXPECT_NONFATAL_FAILURE( + a.DoA(9), + "Mock function called more times than expected - returning directly.\n" + " Function call: DoA(9)\n" + " Expected: to be never called\n" + " Actual: called once - over-saturated and active"); +} + +// Tests that when a non-void function is called too many times, the +// failure message contains the argument values and the return value. +TEST(ExcessiveCallTest, GeneratesFailureForNonVoidFunction) { + MockB b; + EXPECT_CALL(b, DoB(_)); + b.DoB(1); + EXPECT_NONFATAL_FAILURE( + b.DoB(2), + "Mock function called more times than expected - " + "returning default value.\n" + " Function call: DoB(2)\n" + " Returns: 0\n" + " Expected: to be called once\n" + " Actual: called twice - over-saturated and active"); +} + +// Tests using sequences. + +TEST(InSequenceTest, AllExpectationInScopeAreInSequence) { + MockA a; + { + InSequence dummy; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(2)); + } + + EXPECT_NONFATAL_FAILURE({ // NOLINT + a.DoA(2); + }, "Unexpected mock function call"); + + a.DoA(1); + a.DoA(2); +} + +TEST(InSequenceTest, NestedInSequence) { + MockA a; + { + InSequence dummy; + + EXPECT_CALL(a, DoA(1)); + { + InSequence dummy2; + + EXPECT_CALL(a, DoA(2)); + EXPECT_CALL(a, DoA(3)); + } + } + + EXPECT_NONFATAL_FAILURE({ // NOLINT + a.DoA(1); + a.DoA(3); + }, "Unexpected mock function call"); + + a.DoA(2); + a.DoA(3); +} + +TEST(InSequenceTest, ExpectationsOutOfScopeAreNotAffected) { + MockA a; + { + InSequence dummy; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(2)); + } + EXPECT_CALL(a, DoA(3)); + + EXPECT_NONFATAL_FAILURE({ // NOLINT + a.DoA(2); + }, "Unexpected mock function call"); + + a.DoA(3); + a.DoA(1); + a.DoA(2); +} + +// Tests that any order is allowed when no sequence is used. +TEST(SequenceTest, AnyOrderIsOkByDefault) { + { + MockA a; + MockB b; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(b, DoB()) + .Times(AnyNumber()); + + a.DoA(1); + b.DoB(); + } + + { // NOLINT + MockA a; + MockB b; + + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(b, DoB()) + .Times(AnyNumber()); + + b.DoB(); + a.DoA(1); + } +} + +// Tests that the calls must be in strict order when a complete order +// is specified. +TEST(SequenceTest, CallsMustBeInStrictOrderWhenSaidSo1) { + MockA a; + ON_CALL(a, ReturnResult(_)) + .WillByDefault(Return(Result())); + + Sequence s; + EXPECT_CALL(a, ReturnResult(1)) + .InSequence(s); + EXPECT_CALL(a, ReturnResult(2)) + .InSequence(s); + EXPECT_CALL(a, ReturnResult(3)) + .InSequence(s); + + a.ReturnResult(1); + + // May only be called after a.ReturnResult(2). + EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call"); + + a.ReturnResult(2); + a.ReturnResult(3); +} + +// Tests that the calls must be in strict order when a complete order +// is specified. +TEST(SequenceTest, CallsMustBeInStrictOrderWhenSaidSo2) { + MockA a; + ON_CALL(a, ReturnResult(_)) + .WillByDefault(Return(Result())); + + Sequence s; + EXPECT_CALL(a, ReturnResult(1)) + .InSequence(s); + EXPECT_CALL(a, ReturnResult(2)) + .InSequence(s); + + // May only be called after a.ReturnResult(1). + EXPECT_NONFATAL_FAILURE(a.ReturnResult(2), "Unexpected mock function call"); + + a.ReturnResult(1); + a.ReturnResult(2); +} + +// Tests specifying a DAG using multiple sequences. +class PartialOrderTest : public testing::Test { + protected: + PartialOrderTest() { + ON_CALL(a_, ReturnResult(_)) + .WillByDefault(Return(Result())); + + // Specifies this partial ordering: + // + // a.ReturnResult(1) ==> + // a.ReturnResult(2) * n ==> a.ReturnResult(3) + // b.DoB() * 2 ==> + Sequence x, y; + EXPECT_CALL(a_, ReturnResult(1)) + .InSequence(x); + EXPECT_CALL(b_, DoB()) + .Times(2) + .InSequence(y); + EXPECT_CALL(a_, ReturnResult(2)) + .Times(AnyNumber()) + .InSequence(x, y); + EXPECT_CALL(a_, ReturnResult(3)) + .InSequence(x); + } + + MockA a_; + MockB b_; +}; + +TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag1) { + a_.ReturnResult(1); + b_.DoB(); + + // May only be called after the second DoB(). + EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call"); + + b_.DoB(); + a_.ReturnResult(3); +} + +TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag2) { + // May only be called after ReturnResult(1). + EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call"); + + a_.ReturnResult(1); + b_.DoB(); + b_.DoB(); + a_.ReturnResult(3); +} + +TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag3) { + // May only be called last. + EXPECT_NONFATAL_FAILURE(a_.ReturnResult(3), "Unexpected mock function call"); + + a_.ReturnResult(1); + b_.DoB(); + b_.DoB(); + a_.ReturnResult(3); +} + +TEST_F(PartialOrderTest, CallsMustConformToSpecifiedDag4) { + a_.ReturnResult(1); + b_.DoB(); + b_.DoB(); + a_.ReturnResult(3); + + // May only be called before ReturnResult(3). + EXPECT_NONFATAL_FAILURE(a_.ReturnResult(2), "Unexpected mock function call"); +} + +TEST(SequenceTest, Retirement) { + MockA a; + Sequence s; + + EXPECT_CALL(a, DoA(1)) + .InSequence(s); + EXPECT_CALL(a, DoA(_)) + .InSequence(s) + .RetiresOnSaturation(); + EXPECT_CALL(a, DoA(1)) + .InSequence(s); + + a.DoA(1); + a.DoA(2); + a.DoA(1); +} + +// Tests Expectation. + +TEST(ExpectationTest, ConstrutorsWork) { + MockA a; + Expectation e1; // Default ctor. + + // Ctor from various forms of EXPECT_CALL. + Expectation e2 = EXPECT_CALL(a, DoA(2)); + Expectation e3 = EXPECT_CALL(a, DoA(3)).With(_); + { + Sequence s; + Expectation e4 = EXPECT_CALL(a, DoA(4)).Times(1); + Expectation e5 = EXPECT_CALL(a, DoA(5)).InSequence(s); + } + Expectation e6 = EXPECT_CALL(a, DoA(6)).After(e2); + Expectation e7 = EXPECT_CALL(a, DoA(7)).WillOnce(Return()); + Expectation e8 = EXPECT_CALL(a, DoA(8)).WillRepeatedly(Return()); + Expectation e9 = EXPECT_CALL(a, DoA(9)).RetiresOnSaturation(); + + Expectation e10 = e2; // Copy ctor. + + EXPECT_THAT(e1, Ne(e2)); + EXPECT_THAT(e2, Eq(e10)); + + a.DoA(2); + a.DoA(3); + a.DoA(4); + a.DoA(5); + a.DoA(6); + a.DoA(7); + a.DoA(8); + a.DoA(9); +} + +TEST(ExpectationTest, AssignmentWorks) { + MockA a; + Expectation e1; + Expectation e2 = EXPECT_CALL(a, DoA(1)); + + EXPECT_THAT(e1, Ne(e2)); + + e1 = e2; + EXPECT_THAT(e1, Eq(e2)); + + a.DoA(1); +} + +// Tests ExpectationSet. + +TEST(ExpectationSetTest, MemberTypesAreCorrect) { + ::testing::StaticAssertTypeEq<Expectation, ExpectationSet::value_type>(); +} + +TEST(ExpectationSetTest, ConstructorsWork) { + MockA a; + + Expectation e1; + const Expectation e2; + ExpectationSet es1; // Default ctor. + ExpectationSet es2 = EXPECT_CALL(a, DoA(1)); // Ctor from EXPECT_CALL. + ExpectationSet es3 = e1; // Ctor from Expectation. + ExpectationSet es4(e1); // Ctor from Expectation; alternative syntax. + ExpectationSet es5 = e2; // Ctor from const Expectation. + ExpectationSet es6(e2); // Ctor from const Expectation; alternative syntax. + ExpectationSet es7 = es2; // Copy ctor. + + EXPECT_EQ(0, es1.size()); + EXPECT_EQ(1, es2.size()); + EXPECT_EQ(1, es3.size()); + EXPECT_EQ(1, es4.size()); + EXPECT_EQ(1, es5.size()); + EXPECT_EQ(1, es6.size()); + EXPECT_EQ(1, es7.size()); + + EXPECT_THAT(es3, Ne(es2)); + EXPECT_THAT(es4, Eq(es3)); + EXPECT_THAT(es5, Eq(es4)); + EXPECT_THAT(es6, Eq(es5)); + EXPECT_THAT(es7, Eq(es2)); + a.DoA(1); +} + +TEST(ExpectationSetTest, AssignmentWorks) { + ExpectationSet es1; + ExpectationSet es2 = Expectation(); + + es1 = es2; + EXPECT_EQ(1, es1.size()); + EXPECT_THAT(*(es1.begin()), Eq(Expectation())); + EXPECT_THAT(es1, Eq(es2)); +} + +TEST(ExpectationSetTest, InsertionWorks) { + ExpectationSet es1; + Expectation e1; + es1 += e1; + EXPECT_EQ(1, es1.size()); + EXPECT_THAT(*(es1.begin()), Eq(e1)); + + MockA a; + Expectation e2 = EXPECT_CALL(a, DoA(1)); + es1 += e2; + EXPECT_EQ(2, es1.size()); + + ExpectationSet::const_iterator it1 = es1.begin(); + ExpectationSet::const_iterator it2 = it1; + ++it2; + EXPECT_TRUE(*it1 == e1 || *it2 == e1); // e1 must be in the set. + EXPECT_TRUE(*it1 == e2 || *it2 == e2); // e2 must be in the set too. + a.DoA(1); +} + +TEST(ExpectationSetTest, SizeWorks) { + ExpectationSet es; + EXPECT_EQ(0, es.size()); + + es += Expectation(); + EXPECT_EQ(1, es.size()); + + MockA a; + es += EXPECT_CALL(a, DoA(1)); + EXPECT_EQ(2, es.size()); + + a.DoA(1); +} + +TEST(ExpectationSetTest, IsEnumerable) { + ExpectationSet es; + EXPECT_TRUE(es.begin() == es.end()); + + es += Expectation(); + ExpectationSet::const_iterator it = es.begin(); + EXPECT_TRUE(it != es.end()); + EXPECT_THAT(*it, Eq(Expectation())); + ++it; + EXPECT_TRUE(it== es.end()); +} + +// Tests the .After() clause. + +TEST(AfterTest, SucceedsWhenPartialOrderIsSatisfied) { + MockA a; + ExpectationSet es; + es += EXPECT_CALL(a, DoA(1)); + es += EXPECT_CALL(a, DoA(2)); + EXPECT_CALL(a, DoA(3)) + .After(es); + + a.DoA(1); + a.DoA(2); + a.DoA(3); +} + +TEST(AfterTest, SucceedsWhenTotalOrderIsSatisfied) { + MockA a; + MockB b; + // The following also verifies that const Expectation objects work + // too. Do not remove the const modifiers. + const Expectation e1 = EXPECT_CALL(a, DoA(1)); + const Expectation e2 = EXPECT_CALL(b, DoB()) + .Times(2) + .After(e1); + EXPECT_CALL(a, DoA(2)).After(e2); + + a.DoA(1); + b.DoB(); + b.DoB(); + a.DoA(2); +} + +// Calls must be in strict order when specified so using .After(). +TEST(AfterTest, CallsMustBeInStrictOrderWhenSpecifiedSo1) { + MockA a; + MockB b; + + // Define ordering: + // a.DoA(1) ==> b.DoB() ==> a.DoA(2) + Expectation e1 = EXPECT_CALL(a, DoA(1)); + Expectation e2 = EXPECT_CALL(b, DoB()) + .After(e1); + EXPECT_CALL(a, DoA(2)) + .After(e2); + + a.DoA(1); + + // May only be called after DoB(). + EXPECT_NONFATAL_FAILURE(a.DoA(2), "Unexpected mock function call"); + + b.DoB(); + a.DoA(2); +} + +// Calls must be in strict order when specified so using .After(). +TEST(AfterTest, CallsMustBeInStrictOrderWhenSpecifiedSo2) { + MockA a; + MockB b; + + // Define ordering: + // a.DoA(1) ==> b.DoB() * 2 ==> a.DoA(2) + Expectation e1 = EXPECT_CALL(a, DoA(1)); + Expectation e2 = EXPECT_CALL(b, DoB()) + .Times(2) + .After(e1); + EXPECT_CALL(a, DoA(2)) + .After(e2); + + a.DoA(1); + b.DoB(); + + // May only be called after the second DoB(). + EXPECT_NONFATAL_FAILURE(a.DoA(2), "Unexpected mock function call"); + + b.DoB(); + a.DoA(2); +} + +// Calls must satisfy the partial order when specified so. +TEST(AfterTest, CallsMustSatisfyPartialOrderWhenSpecifiedSo) { + MockA a; + ON_CALL(a, ReturnResult(_)) + .WillByDefault(Return(Result())); + + // Define ordering: + // a.DoA(1) ==> + // a.DoA(2) ==> a.ReturnResult(3) + Expectation e = EXPECT_CALL(a, DoA(1)); + const ExpectationSet es = EXPECT_CALL(a, DoA(2)); + EXPECT_CALL(a, ReturnResult(3)) + .After(e, es); + + // May only be called last. + EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call"); + + a.DoA(2); + a.DoA(1); + a.ReturnResult(3); +} + +// Calls must satisfy the partial order when specified so. +TEST(AfterTest, CallsMustSatisfyPartialOrderWhenSpecifiedSo2) { + MockA a; + + // Define ordering: + // a.DoA(1) ==> + // a.DoA(2) ==> a.DoA(3) + Expectation e = EXPECT_CALL(a, DoA(1)); + const ExpectationSet es = EXPECT_CALL(a, DoA(2)); + EXPECT_CALL(a, DoA(3)) + .After(e, es); + + a.DoA(2); + + // May only be called last. + EXPECT_NONFATAL_FAILURE(a.DoA(3), "Unexpected mock function call"); + + a.DoA(1); + a.DoA(3); +} + +// .After() can be combined with .InSequence(). +TEST(AfterTest, CanBeUsedWithInSequence) { + MockA a; + Sequence s; + Expectation e = EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(2)).InSequence(s); + EXPECT_CALL(a, DoA(3)) + .InSequence(s) + .After(e); + + a.DoA(1); + + // May only be after DoA(2). + EXPECT_NONFATAL_FAILURE(a.DoA(3), "Unexpected mock function call"); + + a.DoA(2); + a.DoA(3); +} + +// .After() can be called multiple times. +TEST(AfterTest, CanBeCalledManyTimes) { + MockA a; + Expectation e1 = EXPECT_CALL(a, DoA(1)); + Expectation e2 = EXPECT_CALL(a, DoA(2)); + Expectation e3 = EXPECT_CALL(a, DoA(3)); + EXPECT_CALL(a, DoA(4)) + .After(e1) + .After(e2) + .After(e3); + + a.DoA(3); + a.DoA(1); + a.DoA(2); + a.DoA(4); +} + +// .After() accepts up to 5 arguments. +TEST(AfterTest, AcceptsUpToFiveArguments) { + MockA a; + Expectation e1 = EXPECT_CALL(a, DoA(1)); + Expectation e2 = EXPECT_CALL(a, DoA(2)); + Expectation e3 = EXPECT_CALL(a, DoA(3)); + ExpectationSet es1 = EXPECT_CALL(a, DoA(4)); + ExpectationSet es2 = EXPECT_CALL(a, DoA(5)); + EXPECT_CALL(a, DoA(6)) + .After(e1, e2, e3, es1, es2); + + a.DoA(5); + a.DoA(2); + a.DoA(4); + a.DoA(1); + a.DoA(3); + a.DoA(6); +} + +// .After() allows input to contain duplicated Expectations. +TEST(AfterTest, AcceptsDuplicatedInput) { + MockA a; + ON_CALL(a, ReturnResult(_)) + .WillByDefault(Return(Result())); + + // Define ordering: + // DoA(1) ==> + // DoA(2) ==> ReturnResult(3) + Expectation e1 = EXPECT_CALL(a, DoA(1)); + Expectation e2 = EXPECT_CALL(a, DoA(2)); + ExpectationSet es; + es += e1; + es += e2; + EXPECT_CALL(a, ReturnResult(3)) + .After(e1, e2, es, e1); + + a.DoA(1); + + // May only be after DoA(2). + EXPECT_NONFATAL_FAILURE(a.ReturnResult(3), "Unexpected mock function call"); + + a.DoA(2); + a.ReturnResult(3); +} + +// An Expectation added to an ExpectationSet after it has been used in +// an .After() has no effect. +TEST(AfterTest, ChangesToExpectationSetHaveNoEffectAfterwards) { + MockA a; + ExpectationSet es1 = EXPECT_CALL(a, DoA(1)); + Expectation e2 = EXPECT_CALL(a, DoA(2)); + EXPECT_CALL(a, DoA(3)) + .After(es1); + es1 += e2; + + a.DoA(1); + a.DoA(3); + a.DoA(2); +} + +// Tests that Google Mock correctly handles calls to mock functions +// after a mock object owning one of their pre-requisites has died. + +// Tests that calls that satisfy the original spec are successful. +TEST(DeletingMockEarlyTest, Success1) { + MockB* const b1 = new MockB; + MockA* const a = new MockA; + MockB* const b2 = new MockB; + + { + InSequence dummy; + EXPECT_CALL(*b1, DoB(_)) + .WillOnce(Return(1)); + EXPECT_CALL(*a, Binary(_, _)) + .Times(AnyNumber()) + .WillRepeatedly(Return(true)); + EXPECT_CALL(*b2, DoB(_)) + .Times(AnyNumber()) + .WillRepeatedly(Return(2)); + } + + EXPECT_EQ(1, b1->DoB(1)); + delete b1; + // a's pre-requisite has died. + EXPECT_TRUE(a->Binary(0, 1)); + delete b2; + // a's successor has died. + EXPECT_TRUE(a->Binary(1, 2)); + delete a; +} + +// Tests that calls that satisfy the original spec are successful. +TEST(DeletingMockEarlyTest, Success2) { + MockB* const b1 = new MockB; + MockA* const a = new MockA; + MockB* const b2 = new MockB; + + { + InSequence dummy; + EXPECT_CALL(*b1, DoB(_)) + .WillOnce(Return(1)); + EXPECT_CALL(*a, Binary(_, _)) + .Times(AnyNumber()); + EXPECT_CALL(*b2, DoB(_)) + .Times(AnyNumber()) + .WillRepeatedly(Return(2)); + } + + delete a; // a is trivially satisfied. + EXPECT_EQ(1, b1->DoB(1)); + EXPECT_EQ(2, b2->DoB(2)); + delete b1; + delete b2; +} + +// Tests that it's OK to delete a mock object itself in its action. + +// Suppresses warning on unreferenced formal parameter in MSVC with +// -W4. +#ifdef _MSC_VER +# pragma warning(push) +# pragma warning(disable:4100) +#endif + +ACTION_P(Delete, ptr) { delete ptr; } + +#ifdef _MSC_VER +# pragma warning(pop) +#endif + +TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningVoid) { + MockA* const a = new MockA; + EXPECT_CALL(*a, DoA(_)).WillOnce(Delete(a)); + a->DoA(42); // This will cause a to be deleted. +} + +TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningValue) { + MockA* const a = new MockA; + EXPECT_CALL(*a, ReturnResult(_)) + .WillOnce(DoAll(Delete(a), Return(Result()))); + a->ReturnResult(42); // This will cause a to be deleted. +} + +// Tests that calls that violate the original spec yield failures. +TEST(DeletingMockEarlyTest, Failure1) { + MockB* const b1 = new MockB; + MockA* const a = new MockA; + MockB* const b2 = new MockB; + + { + InSequence dummy; + EXPECT_CALL(*b1, DoB(_)) + .WillOnce(Return(1)); + EXPECT_CALL(*a, Binary(_, _)) + .Times(AnyNumber()); + EXPECT_CALL(*b2, DoB(_)) + .Times(AnyNumber()) + .WillRepeatedly(Return(2)); + } + + delete a; // a is trivially satisfied. + EXPECT_NONFATAL_FAILURE({ + b2->DoB(2); + }, "Unexpected mock function call"); + EXPECT_EQ(1, b1->DoB(1)); + delete b1; + delete b2; +} + +// Tests that calls that violate the original spec yield failures. +TEST(DeletingMockEarlyTest, Failure2) { + MockB* const b1 = new MockB; + MockA* const a = new MockA; + MockB* const b2 = new MockB; + + { + InSequence dummy; + EXPECT_CALL(*b1, DoB(_)); + EXPECT_CALL(*a, Binary(_, _)) + .Times(AnyNumber()); + EXPECT_CALL(*b2, DoB(_)) + .Times(AnyNumber()); + } + + EXPECT_NONFATAL_FAILURE(delete b1, + "Actual: never called"); + EXPECT_NONFATAL_FAILURE(a->Binary(0, 1), + "Unexpected mock function call"); + EXPECT_NONFATAL_FAILURE(b2->DoB(1), + "Unexpected mock function call"); + delete a; + delete b2; +} + +class EvenNumberCardinality : public CardinalityInterface { + public: + // Returns true iff call_count calls will satisfy this cardinality. + virtual bool IsSatisfiedByCallCount(int call_count) const { + return call_count % 2 == 0; + } + + // Returns true iff call_count calls will saturate this cardinality. + virtual bool IsSaturatedByCallCount(int /* call_count */) const { + return false; + } + + // Describes self to an ostream. + virtual void DescribeTo(::std::ostream* os) const { + *os << "called even number of times"; + } +}; + +Cardinality EvenNumber() { + return Cardinality(new EvenNumberCardinality); +} + +TEST(ExpectationBaseTest, + AllPrerequisitesAreSatisfiedWorksForNonMonotonicCardinality) { + MockA* a = new MockA; + Sequence s; + + EXPECT_CALL(*a, DoA(1)) + .Times(EvenNumber()) + .InSequence(s); + EXPECT_CALL(*a, DoA(2)) + .Times(AnyNumber()) + .InSequence(s); + EXPECT_CALL(*a, DoA(3)) + .Times(AnyNumber()); + + a->DoA(3); + a->DoA(1); + EXPECT_NONFATAL_FAILURE(a->DoA(2), "Unexpected mock function call"); + EXPECT_NONFATAL_FAILURE(delete a, "to be called even number of times"); +} + +// The following tests verify the message generated when a mock +// function is called. + +struct Printable { +}; + +inline void operator<<(::std::ostream& os, const Printable&) { + os << "Printable"; +} + +struct Unprintable { + Unprintable() : value(0) {} + int value; +}; + +class MockC { + public: + MockC() {} + + MOCK_METHOD6(VoidMethod, void(bool cond, int n, string s, void* p, + const Printable& x, Unprintable y)); + MOCK_METHOD0(NonVoidMethod, int()); // NOLINT + + private: + GTEST_DISALLOW_COPY_AND_ASSIGN_(MockC); +}; + +class VerboseFlagPreservingFixture : public testing::Test { + protected: + VerboseFlagPreservingFixture() + : saved_verbose_flag_(GMOCK_FLAG(verbose)) {} + + ~VerboseFlagPreservingFixture() { GMOCK_FLAG(verbose) = saved_verbose_flag_; } + + private: + const string saved_verbose_flag_; + + GTEST_DISALLOW_COPY_AND_ASSIGN_(VerboseFlagPreservingFixture); +}; + +#if GTEST_HAS_STREAM_REDIRECTION + +// Tests that an uninteresting mock function call on a naggy mock +// generates a warning without the stack trace when +// --gmock_verbose=warning is specified. +TEST(FunctionCallMessageTest, + UninterestingCallOnNaggyMockGeneratesNoStackTraceWhenVerboseWarning) { + GMOCK_FLAG(verbose) = kWarningVerbosity; + NaggyMock<MockC> c; + CaptureStdout(); + c.VoidMethod(false, 5, "Hi", NULL, Printable(), Unprintable()); + const std::string output = GetCapturedStdout(); + EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output); + EXPECT_PRED_FORMAT2(IsNotSubstring, "Stack trace:", output); +} + +// Tests that an uninteresting mock function call on a naggy mock +// generates a warning containing the stack trace when +// --gmock_verbose=info is specified. +TEST(FunctionCallMessageTest, + UninterestingCallOnNaggyMockGeneratesFyiWithStackTraceWhenVerboseInfo) { + GMOCK_FLAG(verbose) = kInfoVerbosity; + NaggyMock<MockC> c; + CaptureStdout(); + c.VoidMethod(false, 5, "Hi", NULL, Printable(), Unprintable()); + const std::string output = GetCapturedStdout(); + EXPECT_PRED_FORMAT2(IsSubstring, "GMOCK WARNING", output); + EXPECT_PRED_FORMAT2(IsSubstring, "Stack trace:", output); + +# ifndef NDEBUG + + // We check the stack trace content in dbg-mode only, as opt-mode + // may inline the call we are interested in seeing. + + // Verifies that a void mock function's name appears in the stack + // trace. + EXPECT_PRED_FORMAT2(IsSubstring, "VoidMethod(", output); + + // Verifies that a non-void mock function's name appears in the + // stack trace. + CaptureStdout(); + c.NonVoidMethod(); + const std::string output2 = GetCapturedStdout(); + EXPECT_PRED_FORMAT2(IsSubstring, "NonVoidMethod(", output2); + +# endif // NDEBUG +} + +// Tests that an uninteresting mock function call on a naggy mock +// causes the function arguments and return value to be printed. +TEST(FunctionCallMessageTest, + UninterestingCallOnNaggyMockPrintsArgumentsAndReturnValue) { + // A non-void mock function. + NaggyMock<MockB> b; + CaptureStdout(); + b.DoB(); + const std::string output1 = GetCapturedStdout(); + EXPECT_PRED_FORMAT2( + IsSubstring, + "Uninteresting mock function call - returning default value.\n" + " Function call: DoB()\n" + " Returns: 0\n", output1.c_str()); + // Makes sure the return value is printed. + + // A void mock function. + NaggyMock<MockC> c; + CaptureStdout(); + c.VoidMethod(false, 5, "Hi", NULL, Printable(), Unprintable()); + const std::string output2 = GetCapturedStdout(); + EXPECT_THAT(output2.c_str(), + ContainsRegex( + "Uninteresting mock function call - returning directly\\.\n" + " Function call: VoidMethod" + "\\(false, 5, \"Hi\", NULL, @.+ " + "Printable, 4-byte object <00-00 00-00>\\)")); + // A void function has no return value to print. +} + +// Tests how the --gmock_verbose flag affects Google Mock's output. + +class GMockVerboseFlagTest : public VerboseFlagPreservingFixture { + public: + // Verifies that the given Google Mock output is correct. (When + // should_print is true, the output should match the given regex and + // contain the given function name in the stack trace. When it's + // false, the output should be empty.) + void VerifyOutput(const std::string& output, bool should_print, + const string& expected_substring, + const string& function_name) { + if (should_print) { + EXPECT_THAT(output.c_str(), HasSubstr(expected_substring)); +# ifndef NDEBUG + // We check the stack trace content in dbg-mode only, as opt-mode + // may inline the call we are interested in seeing. + EXPECT_THAT(output.c_str(), HasSubstr(function_name)); +# else + // Suppresses 'unused function parameter' warnings. + static_cast<void>(function_name); +# endif // NDEBUG + } else { + EXPECT_STREQ("", output.c_str()); + } + } + + // Tests how the flag affects expected calls. + void TestExpectedCall(bool should_print) { + MockA a; + EXPECT_CALL(a, DoA(5)); + EXPECT_CALL(a, Binary(_, 1)) + .WillOnce(Return(true)); + + // A void-returning function. + CaptureStdout(); + a.DoA(5); + VerifyOutput( + GetCapturedStdout(), + should_print, + "Mock function call matches EXPECT_CALL(a, DoA(5))...\n" + " Function call: DoA(5)\n" + "Stack trace:\n", + "DoA"); + + // A non-void-returning function. + CaptureStdout(); + a.Binary(2, 1); + VerifyOutput( + GetCapturedStdout(), + should_print, + "Mock function call matches EXPECT_CALL(a, Binary(_, 1))...\n" + " Function call: Binary(2, 1)\n" + " Returns: true\n" + "Stack trace:\n", + "Binary"); + } + + // Tests how the flag affects uninteresting calls on a naggy mock. + void TestUninterestingCallOnNaggyMock(bool should_print) { + NaggyMock<MockA> a; + const string note = + "NOTE: You can safely ignore the above warning unless this " + "call should not happen. Do not suppress it by blindly adding " + "an EXPECT_CALL() if you don't mean to enforce the call. " + "See https://github.com/google/googletest/blob/master/googlemock/docs/CookBook.md#" + "knowing-when-to-expect for details."; + + // A void-returning function. + CaptureStdout(); + a.DoA(5); + VerifyOutput( + GetCapturedStdout(), + should_print, + "\nGMOCK WARNING:\n" + "Uninteresting mock function call - returning directly.\n" + " Function call: DoA(5)\n" + + note, + "DoA"); + + // A non-void-returning function. + CaptureStdout(); + a.Binary(2, 1); + VerifyOutput( + GetCapturedStdout(), + should_print, + "\nGMOCK WARNING:\n" + "Uninteresting mock function call - returning default value.\n" + " Function call: Binary(2, 1)\n" + " Returns: false\n" + + note, + "Binary"); + } +}; + +// Tests that --gmock_verbose=info causes both expected and +// uninteresting calls to be reported. +TEST_F(GMockVerboseFlagTest, Info) { + GMOCK_FLAG(verbose) = kInfoVerbosity; + TestExpectedCall(true); + TestUninterestingCallOnNaggyMock(true); +} + +// Tests that --gmock_verbose=warning causes uninteresting calls to be +// reported. +TEST_F(GMockVerboseFlagTest, Warning) { + GMOCK_FLAG(verbose) = kWarningVerbosity; + TestExpectedCall(false); + TestUninterestingCallOnNaggyMock(true); +} + +// Tests that --gmock_verbose=warning causes neither expected nor +// uninteresting calls to be reported. +TEST_F(GMockVerboseFlagTest, Error) { + GMOCK_FLAG(verbose) = kErrorVerbosity; + TestExpectedCall(false); + TestUninterestingCallOnNaggyMock(false); +} + +// Tests that --gmock_verbose=SOME_INVALID_VALUE has the same effect +// as --gmock_verbose=warning. +TEST_F(GMockVerboseFlagTest, InvalidFlagIsTreatedAsWarning) { + GMOCK_FLAG(verbose) = "invalid"; // Treated as "warning". + TestExpectedCall(false); + TestUninterestingCallOnNaggyMock(true); +} + +#endif // GTEST_HAS_STREAM_REDIRECTION + +// A helper class that generates a failure when printed. We use it to +// ensure that Google Mock doesn't print a value (even to an internal +// buffer) when it is not supposed to do so. +class PrintMeNot {}; + +void PrintTo(PrintMeNot /* dummy */, ::std::ostream* /* os */) { + ADD_FAILURE() << "Google Mock is printing a value that shouldn't be " + << "printed even to an internal buffer."; +} + +class LogTestHelper { + public: + LogTestHelper() {} + + MOCK_METHOD1(Foo, PrintMeNot(PrintMeNot)); + + private: + GTEST_DISALLOW_COPY_AND_ASSIGN_(LogTestHelper); +}; + +class GMockLogTest : public VerboseFlagPreservingFixture { + protected: + LogTestHelper helper_; +}; + +TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsWarning) { + GMOCK_FLAG(verbose) = kWarningVerbosity; + EXPECT_CALL(helper_, Foo(_)) + .WillOnce(Return(PrintMeNot())); + helper_.Foo(PrintMeNot()); // This is an expected call. +} + +TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsError) { + GMOCK_FLAG(verbose) = kErrorVerbosity; + EXPECT_CALL(helper_, Foo(_)) + .WillOnce(Return(PrintMeNot())); + helper_.Foo(PrintMeNot()); // This is an expected call. +} + +TEST_F(GMockLogTest, DoesNotPrintWarningInternallyIfVerbosityIsError) { + GMOCK_FLAG(verbose) = kErrorVerbosity; + ON_CALL(helper_, Foo(_)) + .WillByDefault(Return(PrintMeNot())); + helper_.Foo(PrintMeNot()); // This should generate a warning. +} + +// Tests Mock::AllowLeak(). + +TEST(AllowLeakTest, AllowsLeakingUnusedMockObject) { + MockA* a = new MockA; + Mock::AllowLeak(a); +} + +TEST(AllowLeakTest, CanBeCalledBeforeOnCall) { + MockA* a = new MockA; + Mock::AllowLeak(a); + ON_CALL(*a, DoA(_)).WillByDefault(Return()); + a->DoA(0); +} + +TEST(AllowLeakTest, CanBeCalledAfterOnCall) { + MockA* a = new MockA; + ON_CALL(*a, DoA(_)).WillByDefault(Return()); + Mock::AllowLeak(a); +} + +TEST(AllowLeakTest, CanBeCalledBeforeExpectCall) { + MockA* a = new MockA; + Mock::AllowLeak(a); + EXPECT_CALL(*a, DoA(_)); + a->DoA(0); +} + +TEST(AllowLeakTest, CanBeCalledAfterExpectCall) { + MockA* a = new MockA; + EXPECT_CALL(*a, DoA(_)).Times(AnyNumber()); + Mock::AllowLeak(a); +} + +TEST(AllowLeakTest, WorksWhenBothOnCallAndExpectCallArePresent) { + MockA* a = new MockA; + ON_CALL(*a, DoA(_)).WillByDefault(Return()); + EXPECT_CALL(*a, DoA(_)).Times(AnyNumber()); + Mock::AllowLeak(a); +} + +// Tests that we can verify and clear a mock object's expectations +// when none of its methods has expectations. +TEST(VerifyAndClearExpectationsTest, NoMethodHasExpectations) { + MockB b; + ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b)); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can verify and clear a mock object's expectations +// when some, but not all, of its methods have expectations *and* the +// verification succeeds. +TEST(VerifyAndClearExpectationsTest, SomeMethodsHaveExpectationsAndSucceed) { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)); + b.DoB(); + ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b)); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can verify and clear a mock object's expectations +// when some, but not all, of its methods have expectations *and* the +// verification fails. +TEST(VerifyAndClearExpectationsTest, SomeMethodsHaveExpectationsAndFail) { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)); + bool result = true; + EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClearExpectations(&b), + "Actual: never called"); + ASSERT_FALSE(result); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can verify and clear a mock object's expectations +// when all of its methods have expectations. +TEST(VerifyAndClearExpectationsTest, AllMethodsHaveExpectations) { + MockB b; + EXPECT_CALL(b, DoB()) + .WillOnce(Return(1)); + EXPECT_CALL(b, DoB(_)) + .WillOnce(Return(2)); + b.DoB(); + b.DoB(1); + ASSERT_TRUE(Mock::VerifyAndClearExpectations(&b)); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can verify and clear a mock object's expectations +// when a method has more than one expectation. +TEST(VerifyAndClearExpectationsTest, AMethodHasManyExpectations) { + MockB b; + EXPECT_CALL(b, DoB(0)) + .WillOnce(Return(1)); + EXPECT_CALL(b, DoB(_)) + .WillOnce(Return(2)); + b.DoB(1); + bool result = true; + EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClearExpectations(&b), + "Actual: never called"); + ASSERT_FALSE(result); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can call VerifyAndClearExpectations() on the same +// mock object multiple times. +TEST(VerifyAndClearExpectationsTest, CanCallManyTimes) { + MockB b; + EXPECT_CALL(b, DoB()); + b.DoB(); + Mock::VerifyAndClearExpectations(&b); + + EXPECT_CALL(b, DoB(_)) + .WillOnce(Return(1)); + b.DoB(1); + Mock::VerifyAndClearExpectations(&b); + Mock::VerifyAndClearExpectations(&b); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can clear a mock object's default actions when none +// of its methods has default actions. +TEST(VerifyAndClearTest, NoMethodHasDefaultActions) { + MockB b; + // If this crashes or generates a failure, the test will catch it. + Mock::VerifyAndClear(&b); + EXPECT_EQ(0, b.DoB()); +} + +// Tests that we can clear a mock object's default actions when some, +// but not all of its methods have default actions. +TEST(VerifyAndClearTest, SomeMethodsHaveDefaultActions) { + MockB b; + ON_CALL(b, DoB()) + .WillByDefault(Return(1)); + + Mock::VerifyAndClear(&b); + + // Verifies that the default action of int DoB() was removed. + EXPECT_EQ(0, b.DoB()); +} + +// Tests that we can clear a mock object's default actions when all of +// its methods have default actions. +TEST(VerifyAndClearTest, AllMethodsHaveDefaultActions) { + MockB b; + ON_CALL(b, DoB()) + .WillByDefault(Return(1)); + ON_CALL(b, DoB(_)) + .WillByDefault(Return(2)); + + Mock::VerifyAndClear(&b); + + // Verifies that the default action of int DoB() was removed. + EXPECT_EQ(0, b.DoB()); + + // Verifies that the default action of int DoB(int) was removed. + EXPECT_EQ(0, b.DoB(0)); +} + +// Tests that we can clear a mock object's default actions when a +// method has more than one ON_CALL() set on it. +TEST(VerifyAndClearTest, AMethodHasManyDefaultActions) { + MockB b; + ON_CALL(b, DoB(0)) + .WillByDefault(Return(1)); + ON_CALL(b, DoB(_)) + .WillByDefault(Return(2)); + + Mock::VerifyAndClear(&b); + + // Verifies that the default actions (there are two) of int DoB(int) + // were removed. + EXPECT_EQ(0, b.DoB(0)); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can call VerifyAndClear() on a mock object multiple +// times. +TEST(VerifyAndClearTest, CanCallManyTimes) { + MockB b; + ON_CALL(b, DoB()) + .WillByDefault(Return(1)); + Mock::VerifyAndClear(&b); + Mock::VerifyAndClear(&b); + + ON_CALL(b, DoB(_)) + .WillByDefault(Return(1)); + Mock::VerifyAndClear(&b); + + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that VerifyAndClear() works when the verification succeeds. +TEST(VerifyAndClearTest, Success) { + MockB b; + ON_CALL(b, DoB()) + .WillByDefault(Return(1)); + EXPECT_CALL(b, DoB(1)) + .WillOnce(Return(2)); + + b.DoB(); + b.DoB(1); + ASSERT_TRUE(Mock::VerifyAndClear(&b)); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that VerifyAndClear() works when the verification fails. +TEST(VerifyAndClearTest, Failure) { + MockB b; + ON_CALL(b, DoB(_)) + .WillByDefault(Return(1)); + EXPECT_CALL(b, DoB()) + .WillOnce(Return(2)); + + b.DoB(1); + bool result = true; + EXPECT_NONFATAL_FAILURE(result = Mock::VerifyAndClear(&b), + "Actual: never called"); + ASSERT_FALSE(result); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that VerifyAndClear() works when the default actions and +// expectations are set on a const mock object. +TEST(VerifyAndClearTest, Const) { + MockB b; + ON_CALL(Const(b), DoB()) + .WillByDefault(Return(1)); + + EXPECT_CALL(Const(b), DoB()) + .WillOnce(DoDefault()) + .WillOnce(Return(2)); + + b.DoB(); + b.DoB(); + ASSERT_TRUE(Mock::VerifyAndClear(&b)); + + // There should be no expectations on the methods now, so we can + // freely call them. + EXPECT_EQ(0, b.DoB()); + EXPECT_EQ(0, b.DoB(1)); +} + +// Tests that we can set default actions and expectations on a mock +// object after VerifyAndClear() has been called on it. +TEST(VerifyAndClearTest, CanSetDefaultActionsAndExpectationsAfterwards) { + MockB b; + ON_CALL(b, DoB()) + .WillByDefault(Return(1)); + EXPECT_CALL(b, DoB(_)) + .WillOnce(Return(2)); + b.DoB(1); + + Mock::VerifyAndClear(&b); + + EXPECT_CALL(b, DoB()) + .WillOnce(Return(3)); + ON_CALL(b, DoB(_)) + .WillByDefault(Return(4)); + + EXPECT_EQ(3, b.DoB()); + EXPECT_EQ(4, b.DoB(1)); +} + +// Tests that calling VerifyAndClear() on one mock object does not +// affect other mock objects (either of the same type or not). +TEST(VerifyAndClearTest, DoesNotAffectOtherMockObjects) { + MockA a; + MockB b1; + MockB b2; + + ON_CALL(a, Binary(_, _)) + .WillByDefault(Return(true)); + EXPECT_CALL(a, Binary(_, _)) + .WillOnce(DoDefault()) + .WillOnce(Return(false)); + + ON_CALL(b1, DoB()) + .WillByDefault(Return(1)); + EXPECT_CALL(b1, DoB(_)) + .WillOnce(Return(2)); + + ON_CALL(b2, DoB()) + .WillByDefault(Return(3)); + EXPECT_CALL(b2, DoB(_)); + + b2.DoB(0); + Mock::VerifyAndClear(&b2); + + // Verifies that the default actions and expectations of a and b1 + // are still in effect. + EXPECT_TRUE(a.Binary(0, 0)); + EXPECT_FALSE(a.Binary(0, 0)); + + EXPECT_EQ(1, b1.DoB()); + EXPECT_EQ(2, b1.DoB(0)); +} + +TEST(VerifyAndClearTest, + DestroyingChainedMocksDoesNotDeadlockThroughExpectations) { + linked_ptr<MockA> a(new MockA); + ReferenceHoldingMock test_mock; + + // EXPECT_CALL stores a reference to a inside test_mock. + EXPECT_CALL(test_mock, AcceptReference(_)) + .WillRepeatedly(SetArgPointee<0>(a)); + + // Throw away the reference to the mock that we have in a. After this, the + // only reference to it is stored by test_mock. + a.reset(); + + // When test_mock goes out of scope, it destroys the last remaining reference + // to the mock object originally pointed to by a. This will cause the MockA + // destructor to be called from inside the ReferenceHoldingMock destructor. + // The state of all mocks is protected by a single global lock, but there + // should be no deadlock. +} + +TEST(VerifyAndClearTest, + DestroyingChainedMocksDoesNotDeadlockThroughDefaultAction) { + linked_ptr<MockA> a(new MockA); + ReferenceHoldingMock test_mock; + + // ON_CALL stores a reference to a inside test_mock. + ON_CALL(test_mock, AcceptReference(_)) + .WillByDefault(SetArgPointee<0>(a)); + + // Throw away the reference to the mock that we have in a. After this, the + // only reference to it is stored by test_mock. + a.reset(); + + // When test_mock goes out of scope, it destroys the last remaining reference + // to the mock object originally pointed to by a. This will cause the MockA + // destructor to be called from inside the ReferenceHoldingMock destructor. + // The state of all mocks is protected by a single global lock, but there + // should be no deadlock. +} + +// Tests that a mock function's action can call a mock function +// (either the same function or a different one) either as an explicit +// action or as a default action without causing a dead lock. It +// verifies that the action is not performed inside the critical +// section. +TEST(SynchronizationTest, CanCallMockMethodInAction) { + MockA a; + MockC c; + ON_CALL(a, DoA(_)) + .WillByDefault(IgnoreResult(InvokeWithoutArgs(&c, + &MockC::NonVoidMethod))); + EXPECT_CALL(a, DoA(1)); + EXPECT_CALL(a, DoA(1)) + .WillOnce(Invoke(&a, &MockA::DoA)) + .RetiresOnSaturation(); + EXPECT_CALL(c, NonVoidMethod()); + + a.DoA(1); + // This will match the second EXPECT_CALL() and trigger another a.DoA(1), + // which will in turn match the first EXPECT_CALL() and trigger a call to + // c.NonVoidMethod() that was specified by the ON_CALL() since the first + // EXPECT_CALL() did not specify an action. +} + +} // namespace + +// Allows the user to define his own main and then invoke gmock_main +// from it. This might be necessary on some platforms which require +// specific setup and teardown. +#if GMOCK_RENAME_MAIN +int gmock_main(int argc, char **argv) { +#else +int main(int argc, char **argv) { +#endif // GMOCK_RENAME_MAIN + testing::InitGoogleMock(&argc, argv); + + // Ensures that the tests pass no matter what value of + // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies. + testing::GMOCK_FLAG(catch_leaked_mocks) = true; + testing::GMOCK_FLAG(verbose) = testing::internal::kWarningVerbosity; + + return RUN_ALL_TESTS(); +} |