--- /dev/null
+// 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.
+
+
+// Tests that Google Mock constructs can be used in a large number of
+// threads concurrently.
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace testing {
+namespace {
+
+// From gtest-port.h.
+using ::testing::internal::ThreadWithParam;
+
+// The maximum number of test threads (not including helper threads)
+// to create.
+const int kMaxTestThreads = 50;
+
+// How many times to repeat a task in a test thread.
+const int kRepeat = 50;
+
+class MockFoo {
+ public:
+ MOCK_METHOD1(Bar, int(int n)); // NOLINT
+ MOCK_METHOD2(Baz, char(const char* s1, const std::string& s2)); // NOLINT
+};
+
+// Helper for waiting for the given thread to finish and then deleting it.
+template <typename T>
+void JoinAndDelete(ThreadWithParam<T>* t) {
+ t->Join();
+ delete t;
+}
+
+using internal::linked_ptr;
+
+// Helper classes for testing using linked_ptr concurrently.
+
+class Base {
+ public:
+ explicit Base(int a_x) : x_(a_x) {}
+ virtual ~Base() {}
+ int x() const { return x_; }
+ private:
+ int x_;
+};
+
+class Derived1 : public Base {
+ public:
+ Derived1(int a_x, int a_y) : Base(a_x), y_(a_y) {}
+ int y() const { return y_; }
+ private:
+ int y_;
+};
+
+class Derived2 : public Base {
+ public:
+ Derived2(int a_x, int a_z) : Base(a_x), z_(a_z) {}
+ int z() const { return z_; }
+ private:
+ int z_;
+};
+
+linked_ptr<Derived1> pointer1(new Derived1(1, 2));
+linked_ptr<Derived2> pointer2(new Derived2(3, 4));
+
+struct Dummy {};
+
+// Tests that we can copy from a linked_ptr and read it concurrently.
+void TestConcurrentCopyAndReadLinkedPtr(Dummy /* dummy */) {
+ // Reads pointer1 and pointer2 while they are being copied from in
+ // another thread.
+ EXPECT_EQ(1, pointer1->x());
+ EXPECT_EQ(2, pointer1->y());
+ EXPECT_EQ(3, pointer2->x());
+ EXPECT_EQ(4, pointer2->z());
+
+ // Copies from pointer1.
+ linked_ptr<Derived1> p1(pointer1);
+ EXPECT_EQ(1, p1->x());
+ EXPECT_EQ(2, p1->y());
+
+ // Assigns from pointer2 where the LHS was empty.
+ linked_ptr<Base> p2;
+ p2 = pointer1;
+ EXPECT_EQ(1, p2->x());
+
+ // Assigns from pointer2 where the LHS was not empty.
+ p2 = pointer2;
+ EXPECT_EQ(3, p2->x());
+}
+
+const linked_ptr<Derived1> p0(new Derived1(1, 2));
+
+// Tests that we can concurrently modify two linked_ptrs that point to
+// the same object.
+void TestConcurrentWriteToEqualLinkedPtr(Dummy /* dummy */) {
+ // p1 and p2 point to the same, shared thing. One thread resets p1.
+ // Another thread assigns to p2. This will cause the same
+ // underlying "ring" to be updated concurrently.
+ linked_ptr<Derived1> p1(p0);
+ linked_ptr<Derived1> p2(p0);
+
+ EXPECT_EQ(1, p1->x());
+ EXPECT_EQ(2, p1->y());
+
+ EXPECT_EQ(1, p2->x());
+ EXPECT_EQ(2, p2->y());
+
+ p1.reset();
+ p2 = p0;
+
+ EXPECT_EQ(1, p2->x());
+ EXPECT_EQ(2, p2->y());
+}
+
+// Tests that different mock objects can be used in their respective
+// threads. This should generate no Google Test failure.
+void TestConcurrentMockObjects(Dummy /* dummy */) {
+ // Creates a mock and does some typical operations on it.
+ MockFoo foo;
+ ON_CALL(foo, Bar(_))
+ .WillByDefault(Return(1));
+ ON_CALL(foo, Baz(_, _))
+ .WillByDefault(Return('b'));
+ ON_CALL(foo, Baz(_, "you"))
+ .WillByDefault(Return('a'));
+
+ EXPECT_CALL(foo, Bar(0))
+ .Times(AtMost(3));
+ EXPECT_CALL(foo, Baz(_, _));
+ EXPECT_CALL(foo, Baz("hi", "you"))
+ .WillOnce(Return('z'))
+ .WillRepeatedly(DoDefault());
+
+ EXPECT_EQ(1, foo.Bar(0));
+ EXPECT_EQ(1, foo.Bar(0));
+ EXPECT_EQ('z', foo.Baz("hi", "you"));
+ EXPECT_EQ('a', foo.Baz("hi", "you"));
+ EXPECT_EQ('b', foo.Baz("hi", "me"));
+}
+
+// Tests invoking methods of the same mock object in multiple threads.
+
+struct Helper1Param {
+ MockFoo* mock_foo;
+ int* count;
+};
+
+void Helper1(Helper1Param param) {
+ for (int i = 0; i < kRepeat; i++) {
+ const char ch = param.mock_foo->Baz("a", "b");
+ if (ch == 'a') {
+ // It was an expected call.
+ (*param.count)++;
+ } else {
+ // It was an excessive call.
+ EXPECT_EQ('\0', ch);
+ }
+
+ // An unexpected call.
+ EXPECT_EQ('\0', param.mock_foo->Baz("x", "y")) << "Expected failure.";
+
+ // An uninteresting call.
+ EXPECT_EQ(1, param.mock_foo->Bar(5));
+ }
+}
+
+// This should generate 3*kRepeat + 1 failures in total.
+void TestConcurrentCallsOnSameObject(Dummy /* dummy */) {
+ MockFoo foo;
+
+ ON_CALL(foo, Bar(_))
+ .WillByDefault(Return(1));
+ EXPECT_CALL(foo, Baz(_, "b"))
+ .Times(kRepeat)
+ .WillRepeatedly(Return('a'));
+ EXPECT_CALL(foo, Baz(_, "c")); // Expected to be unsatisfied.
+
+ // This chunk of code should generate kRepeat failures about
+ // excessive calls, and 2*kRepeat failures about unexpected calls.
+ int count1 = 0;
+ const Helper1Param param = { &foo, &count1 };
+ ThreadWithParam<Helper1Param>* const t =
+ new ThreadWithParam<Helper1Param>(Helper1, param, NULL);
+
+ int count2 = 0;
+ const Helper1Param param2 = { &foo, &count2 };
+ Helper1(param2);
+ JoinAndDelete(t);
+
+ EXPECT_EQ(kRepeat, count1 + count2);
+
+ // foo's destructor should generate one failure about unsatisfied
+ // expectation.
+}
+
+// Tests using the same mock object in multiple threads when the
+// expectations are partially ordered.
+
+void Helper2(MockFoo* foo) {
+ for (int i = 0; i < kRepeat; i++) {
+ foo->Bar(2);
+ foo->Bar(3);
+ }
+}
+
+// This should generate no Google Test failures.
+void TestPartiallyOrderedExpectationsWithThreads(Dummy /* dummy */) {
+ MockFoo foo;
+ Sequence s1, s2;
+
+ {
+ InSequence dummy;
+ EXPECT_CALL(foo, Bar(0));
+ EXPECT_CALL(foo, Bar(1))
+ .InSequence(s1, s2);
+ }
+
+ EXPECT_CALL(foo, Bar(2))
+ .Times(2*kRepeat)
+ .InSequence(s1)
+ .RetiresOnSaturation();
+ EXPECT_CALL(foo, Bar(3))
+ .Times(2*kRepeat)
+ .InSequence(s2);
+
+ {
+ InSequence dummy;
+ EXPECT_CALL(foo, Bar(2))
+ .InSequence(s1, s2);
+ EXPECT_CALL(foo, Bar(4));
+ }
+
+ foo.Bar(0);
+ foo.Bar(1);
+
+ ThreadWithParam<MockFoo*>* const t =
+ new ThreadWithParam<MockFoo*>(Helper2, &foo, NULL);
+ Helper2(&foo);
+ JoinAndDelete(t);
+
+ foo.Bar(2);
+ foo.Bar(4);
+}
+
+// Tests using Google Mock constructs in many threads concurrently.
+TEST(StressTest, CanUseGMockWithThreads) {
+ void (*test_routines[])(Dummy dummy) = {
+ &TestConcurrentCopyAndReadLinkedPtr,
+ &TestConcurrentWriteToEqualLinkedPtr,
+ &TestConcurrentMockObjects,
+ &TestConcurrentCallsOnSameObject,
+ &TestPartiallyOrderedExpectationsWithThreads,
+ };
+
+ const int kRoutines = sizeof(test_routines)/sizeof(test_routines[0]);
+ const int kCopiesOfEachRoutine = kMaxTestThreads / kRoutines;
+ const int kTestThreads = kCopiesOfEachRoutine * kRoutines;
+ ThreadWithParam<Dummy>* threads[kTestThreads] = {};
+ for (int i = 0; i < kTestThreads; i++) {
+ // Creates a thread to run the test function.
+ threads[i] =
+ new ThreadWithParam<Dummy>(test_routines[i % kRoutines], Dummy(), NULL);
+ GTEST_LOG_(INFO) << "Thread #" << i << " running . . .";
+ }
+
+ // At this point, we have many threads running.
+ for (int i = 0; i < kTestThreads; i++) {
+ JoinAndDelete(threads[i]);
+ }
+
+ // Ensures that the correct number of failures have been reported.
+ const TestInfo* const info = UnitTest::GetInstance()->current_test_info();
+ const TestResult& result = *info->result();
+ const int kExpectedFailures = (3*kRepeat + 1)*kCopiesOfEachRoutine;
+ GTEST_CHECK_(kExpectedFailures == result.total_part_count())
+ << "Expected " << kExpectedFailures << " failures, but got "
+ << result.total_part_count();
+}
+
+} // namespace
+} // namespace testing
+
+int main(int argc, char **argv) {
+ testing::InitGoogleMock(&argc, argv);
+
+ const int exit_code = RUN_ALL_TESTS(); // Expected to fail.
+ GTEST_CHECK_(exit_code != 0) << "RUN_ALL_TESTS() did not fail as expected";
+
+ printf("\nPASS\n");
+ return 0;
+}
Code Review / ric-plt / sdl.git / blobdiff