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+// 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 built-in cardinalities.
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "gtest/gtest-spi.h"
+
+namespace {
+
+using std::stringstream;
+using testing::AnyNumber;
+using testing::AtLeast;
+using testing::AtMost;
+using testing::Between;
+using testing::Cardinality;
+using testing::CardinalityInterface;
+using testing::Exactly;
+using testing::IsSubstring;
+using testing::MakeCardinality;
+
+class MockFoo {
+ public:
+ MockFoo() {}
+ MOCK_METHOD0(Bar, int()); // NOLINT
+
+ private:
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
+};
+
+// Tests that Cardinality objects can be default constructed.
+TEST(CardinalityTest, IsDefaultConstructable) {
+ Cardinality c;
+}
+
+// Tests that Cardinality objects are copyable.
+TEST(CardinalityTest, IsCopyable) {
+ // Tests the copy constructor.
+ Cardinality c = Exactly(1);
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+ // Tests the assignment operator.
+ c = Exactly(2);
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+}
+
+TEST(CardinalityTest, IsOverSaturatedByCallCountWorks) {
+ const Cardinality c = AtMost(5);
+ EXPECT_FALSE(c.IsOverSaturatedByCallCount(4));
+ EXPECT_FALSE(c.IsOverSaturatedByCallCount(5));
+ EXPECT_TRUE(c.IsOverSaturatedByCallCount(6));
+}
+
+// Tests that Cardinality::DescribeActualCallCountTo() creates the
+// correct description.
+TEST(CardinalityTest, CanDescribeActualCallCount) {
+ stringstream ss0;
+ Cardinality::DescribeActualCallCountTo(0, &ss0);
+ EXPECT_EQ("never called", ss0.str());
+
+ stringstream ss1;
+ Cardinality::DescribeActualCallCountTo(1, &ss1);
+ EXPECT_EQ("called once", ss1.str());
+
+ stringstream ss2;
+ Cardinality::DescribeActualCallCountTo(2, &ss2);
+ EXPECT_EQ("called twice", ss2.str());
+
+ stringstream ss3;
+ Cardinality::DescribeActualCallCountTo(3, &ss3);
+ EXPECT_EQ("called 3 times", ss3.str());
+}
+
+// Tests AnyNumber()
+TEST(AnyNumber, Works) {
+ const Cardinality c = AnyNumber();
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(9));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(9));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called any number of times",
+ ss.str());
+}
+
+TEST(AnyNumberTest, HasCorrectBounds) {
+ const Cardinality c = AnyNumber();
+ EXPECT_EQ(0, c.ConservativeLowerBound());
+ EXPECT_EQ(INT_MAX, c.ConservativeUpperBound());
+}
+
+// Tests AtLeast(n).
+
+TEST(AtLeastTest, OnNegativeNumber) {
+ EXPECT_NONFATAL_FAILURE({ // NOLINT
+ AtLeast(-1);
+ }, "The invocation lower bound must be >= 0");
+}
+
+TEST(AtLeastTest, OnZero) {
+ const Cardinality c = AtLeast(0);
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "any number of times",
+ ss.str());
+}
+
+TEST(AtLeastTest, OnPositiveNumber) {
+ const Cardinality c = AtLeast(2);
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(2));
+
+ stringstream ss1;
+ AtLeast(1).DescribeTo(&ss1);
+ EXPECT_PRED_FORMAT2(IsSubstring, "at least once",
+ ss1.str());
+
+ stringstream ss2;
+ c.DescribeTo(&ss2);
+ EXPECT_PRED_FORMAT2(IsSubstring, "at least twice",
+ ss2.str());
+
+ stringstream ss3;
+ AtLeast(3).DescribeTo(&ss3);
+ EXPECT_PRED_FORMAT2(IsSubstring, "at least 3 times",
+ ss3.str());
+}
+
+TEST(AtLeastTest, HasCorrectBounds) {
+ const Cardinality c = AtLeast(2);
+ EXPECT_EQ(2, c.ConservativeLowerBound());
+ EXPECT_EQ(INT_MAX, c.ConservativeUpperBound());
+}
+
+// Tests AtMost(n).
+
+TEST(AtMostTest, OnNegativeNumber) {
+ EXPECT_NONFATAL_FAILURE({ // NOLINT
+ AtMost(-1);
+ }, "The invocation upper bound must be >= 0");
+}
+
+TEST(AtMostTest, OnZero) {
+ const Cardinality c = AtMost(0);
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "never called",
+ ss.str());
+}
+
+TEST(AtMostTest, OnPositiveNumber) {
+ const Cardinality c = AtMost(2);
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(1));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(1));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+
+ stringstream ss1;
+ AtMost(1).DescribeTo(&ss1);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called at most once",
+ ss1.str());
+
+ stringstream ss2;
+ c.DescribeTo(&ss2);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called at most twice",
+ ss2.str());
+
+ stringstream ss3;
+ AtMost(3).DescribeTo(&ss3);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called at most 3 times",
+ ss3.str());
+}
+
+TEST(AtMostTest, HasCorrectBounds) {
+ const Cardinality c = AtMost(2);
+ EXPECT_EQ(0, c.ConservativeLowerBound());
+ EXPECT_EQ(2, c.ConservativeUpperBound());
+}
+
+// Tests Between(m, n).
+
+TEST(BetweenTest, OnNegativeStart) {
+ EXPECT_NONFATAL_FAILURE({ // NOLINT
+ Between(-1, 2);
+ }, "The invocation lower bound must be >= 0, but is actually -1");
+}
+
+TEST(BetweenTest, OnNegativeEnd) {
+ EXPECT_NONFATAL_FAILURE({ // NOLINT
+ Between(1, -2);
+ }, "The invocation upper bound must be >= 0, but is actually -2");
+}
+
+TEST(BetweenTest, OnStartBiggerThanEnd) {
+ EXPECT_NONFATAL_FAILURE({ // NOLINT
+ Between(2, 1);
+ }, "The invocation upper bound (1) must be >= "
+ "the invocation lower bound (2)");
+}
+
+TEST(BetweenTest, OnZeroStartAndZeroEnd) {
+ const Cardinality c = Between(0, 0);
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "never called",
+ ss.str());
+}
+
+TEST(BetweenTest, OnZeroStartAndNonZeroEnd) {
+ const Cardinality c = Between(0, 2);
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(4));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(4));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called at most twice",
+ ss.str());
+}
+
+TEST(BetweenTest, OnSameStartAndEnd) {
+ const Cardinality c = Between(3, 3);
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(2));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(2));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(3));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(3));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(4));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(4));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called 3 times",
+ ss.str());
+}
+
+TEST(BetweenTest, OnDifferentStartAndEnd) {
+ const Cardinality c = Between(3, 5);
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(2));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(2));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(3));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(3));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(5));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(5));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(6));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(6));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called between 3 and 5 times",
+ ss.str());
+}
+
+TEST(BetweenTest, HasCorrectBounds) {
+ const Cardinality c = Between(3, 5);
+ EXPECT_EQ(3, c.ConservativeLowerBound());
+ EXPECT_EQ(5, c.ConservativeUpperBound());
+}
+
+// Tests Exactly(n).
+
+TEST(ExactlyTest, OnNegativeNumber) {
+ EXPECT_NONFATAL_FAILURE({ // NOLINT
+ Exactly(-1);
+ }, "The invocation lower bound must be >= 0");
+}
+
+TEST(ExactlyTest, OnZero) {
+ const Cardinality c = Exactly(0);
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(0));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(1));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(1));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_PRED_FORMAT2(IsSubstring, "never called",
+ ss.str());
+}
+
+TEST(ExactlyTest, OnPositiveNumber) {
+ const Cardinality c = Exactly(2);
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(0));
+ EXPECT_FALSE(c.IsSaturatedByCallCount(0));
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+ EXPECT_TRUE(c.IsSaturatedByCallCount(2));
+
+ stringstream ss1;
+ Exactly(1).DescribeTo(&ss1);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called once",
+ ss1.str());
+
+ stringstream ss2;
+ c.DescribeTo(&ss2);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called twice",
+ ss2.str());
+
+ stringstream ss3;
+ Exactly(3).DescribeTo(&ss3);
+ EXPECT_PRED_FORMAT2(IsSubstring, "called 3 times",
+ ss3.str());
+}
+
+TEST(ExactlyTest, HasCorrectBounds) {
+ const Cardinality c = Exactly(3);
+ EXPECT_EQ(3, c.ConservativeLowerBound());
+ EXPECT_EQ(3, c.ConservativeUpperBound());
+}
+
+// Tests that a user can make his own cardinality by implementing
+// CardinalityInterface and calling MakeCardinality().
+
+class EvenCardinality : 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* ss) const {
+ *ss << "called even number of times";
+ }
+};
+
+TEST(MakeCardinalityTest, ConstructsCardinalityFromInterface) {
+ const Cardinality c = MakeCardinality(new EvenCardinality);
+
+ EXPECT_TRUE(c.IsSatisfiedByCallCount(2));
+ EXPECT_FALSE(c.IsSatisfiedByCallCount(3));
+
+ EXPECT_FALSE(c.IsSaturatedByCallCount(10000));
+
+ stringstream ss;
+ c.DescribeTo(&ss);
+ EXPECT_EQ("called even number of times", ss.str());
+}
+
+} // Unnamed namespace
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