--- /dev/null
+// Copyright 2008, 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 for Google Test itself. This file verifies that the parameter
+// generators objects produce correct parameter sequences and that
+// Google Test runtime instantiates correct tests from those sequences.
+
+#include "gtest/gtest.h"
+
+# include <algorithm>
+# include <iostream>
+# include <list>
+# include <sstream>
+# include <string>
+# include <vector>
+
+# include "src/gtest-internal-inl.h" // for UnitTestOptions
+# include "test/googletest-param-test-test.h"
+
+using ::std::vector;
+using ::std::sort;
+
+using ::testing::AddGlobalTestEnvironment;
+using ::testing::Bool;
+using ::testing::Message;
+using ::testing::Range;
+using ::testing::TestWithParam;
+using ::testing::Values;
+using ::testing::ValuesIn;
+
+# if GTEST_HAS_COMBINE
+using ::testing::Combine;
+using ::testing::get;
+using ::testing::make_tuple;
+using ::testing::tuple;
+# endif // GTEST_HAS_COMBINE
+
+using ::testing::internal::ParamGenerator;
+using ::testing::internal::UnitTestOptions;
+
+// Prints a value to a string.
+//
+// FIXME: remove PrintValue() when we move matchers and
+// EXPECT_THAT() from Google Mock to Google Test. At that time, we
+// can write EXPECT_THAT(x, Eq(y)) to compare two tuples x and y, as
+// EXPECT_THAT() and the matchers know how to print tuples.
+template <typename T>
+::std::string PrintValue(const T& value) {
+ ::std::stringstream stream;
+ stream << value;
+ return stream.str();
+}
+
+# if GTEST_HAS_COMBINE
+
+// These overloads allow printing tuples in our tests. We cannot
+// define an operator<< for tuples, as that definition needs to be in
+// the std namespace in order to be picked up by Google Test via
+// Argument-Dependent Lookup, yet defining anything in the std
+// namespace in non-STL code is undefined behavior.
+
+template <typename T1, typename T2>
+::std::string PrintValue(const tuple<T1, T2>& value) {
+ ::std::stringstream stream;
+ stream << "(" << get<0>(value) << ", " << get<1>(value) << ")";
+ return stream.str();
+}
+
+template <typename T1, typename T2, typename T3>
+::std::string PrintValue(const tuple<T1, T2, T3>& value) {
+ ::std::stringstream stream;
+ stream << "(" << get<0>(value) << ", " << get<1>(value)
+ << ", "<< get<2>(value) << ")";
+ return stream.str();
+}
+
+template <typename T1, typename T2, typename T3, typename T4, typename T5,
+ typename T6, typename T7, typename T8, typename T9, typename T10>
+::std::string PrintValue(
+ const tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& value) {
+ ::std::stringstream stream;
+ stream << "(" << get<0>(value) << ", " << get<1>(value)
+ << ", "<< get<2>(value) << ", " << get<3>(value)
+ << ", "<< get<4>(value) << ", " << get<5>(value)
+ << ", "<< get<6>(value) << ", " << get<7>(value)
+ << ", "<< get<8>(value) << ", " << get<9>(value) << ")";
+ return stream.str();
+}
+
+# endif // GTEST_HAS_COMBINE
+
+// Verifies that a sequence generated by the generator and accessed
+// via the iterator object matches the expected one using Google Test
+// assertions.
+template <typename T, size_t N>
+void VerifyGenerator(const ParamGenerator<T>& generator,
+ const T (&expected_values)[N]) {
+ typename ParamGenerator<T>::iterator it = generator.begin();
+ for (size_t i = 0; i < N; ++i) {
+ ASSERT_FALSE(it == generator.end())
+ << "At element " << i << " when accessing via an iterator "
+ << "created with the copy constructor.\n";
+ // We cannot use EXPECT_EQ() here as the values may be tuples,
+ // which don't support <<.
+ EXPECT_TRUE(expected_values[i] == *it)
+ << "where i is " << i
+ << ", expected_values[i] is " << PrintValue(expected_values[i])
+ << ", *it is " << PrintValue(*it)
+ << ", and 'it' is an iterator created with the copy constructor.\n";
+ ++it;
+ }
+ EXPECT_TRUE(it == generator.end())
+ << "At the presumed end of sequence when accessing via an iterator "
+ << "created with the copy constructor.\n";
+
+ // Test the iterator assignment. The following lines verify that
+ // the sequence accessed via an iterator initialized via the
+ // assignment operator (as opposed to a copy constructor) matches
+ // just the same.
+ it = generator.begin();
+ for (size_t i = 0; i < N; ++i) {
+ ASSERT_FALSE(it == generator.end())
+ << "At element " << i << " when accessing via an iterator "
+ << "created with the assignment operator.\n";
+ EXPECT_TRUE(expected_values[i] == *it)
+ << "where i is " << i
+ << ", expected_values[i] is " << PrintValue(expected_values[i])
+ << ", *it is " << PrintValue(*it)
+ << ", and 'it' is an iterator created with the copy constructor.\n";
+ ++it;
+ }
+ EXPECT_TRUE(it == generator.end())
+ << "At the presumed end of sequence when accessing via an iterator "
+ << "created with the assignment operator.\n";
+}
+
+template <typename T>
+void VerifyGeneratorIsEmpty(const ParamGenerator<T>& generator) {
+ typename ParamGenerator<T>::iterator it = generator.begin();
+ EXPECT_TRUE(it == generator.end());
+
+ it = generator.begin();
+ EXPECT_TRUE(it == generator.end());
+}
+
+// Generator tests. They test that each of the provided generator functions
+// generates an expected sequence of values. The general test pattern
+// instantiates a generator using one of the generator functions,
+// checks the sequence produced by the generator using its iterator API,
+// and then resets the iterator back to the beginning of the sequence
+// and checks the sequence again.
+
+// Tests that iterators produced by generator functions conform to the
+// ForwardIterator concept.
+TEST(IteratorTest, ParamIteratorConformsToForwardIteratorConcept) {
+ const ParamGenerator<int> gen = Range(0, 10);
+ ParamGenerator<int>::iterator it = gen.begin();
+
+ // Verifies that iterator initialization works as expected.
+ ParamGenerator<int>::iterator it2 = it;
+ EXPECT_TRUE(*it == *it2) << "Initialized iterators must point to the "
+ << "element same as its source points to";
+
+ // Verifies that iterator assignment works as expected.
+ ++it;
+ EXPECT_FALSE(*it == *it2);
+ it2 = it;
+ EXPECT_TRUE(*it == *it2) << "Assigned iterators must point to the "
+ << "element same as its source points to";
+
+ // Verifies that prefix operator++() returns *this.
+ EXPECT_EQ(&it, &(++it)) << "Result of the prefix operator++ must be "
+ << "refer to the original object";
+
+ // Verifies that the result of the postfix operator++ points to the value
+ // pointed to by the original iterator.
+ int original_value = *it; // Have to compute it outside of macro call to be
+ // unaffected by the parameter evaluation order.
+ EXPECT_EQ(original_value, *(it++));
+
+ // Verifies that prefix and postfix operator++() advance an iterator
+ // all the same.
+ it2 = it;
+ ++it;
+ ++it2;
+ EXPECT_TRUE(*it == *it2);
+}
+
+// Tests that Range() generates the expected sequence.
+TEST(RangeTest, IntRangeWithDefaultStep) {
+ const ParamGenerator<int> gen = Range(0, 3);
+ const int expected_values[] = {0, 1, 2};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that Range() generates the single element sequence
+// as expected when provided with range limits that are equal.
+TEST(RangeTest, IntRangeSingleValue) {
+ const ParamGenerator<int> gen = Range(0, 1);
+ const int expected_values[] = {0};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that Range() with generates empty sequence when
+// supplied with an empty range.
+TEST(RangeTest, IntRangeEmpty) {
+ const ParamGenerator<int> gen = Range(0, 0);
+ VerifyGeneratorIsEmpty(gen);
+}
+
+// Tests that Range() with custom step (greater then one) generates
+// the expected sequence.
+TEST(RangeTest, IntRangeWithCustomStep) {
+ const ParamGenerator<int> gen = Range(0, 9, 3);
+ const int expected_values[] = {0, 3, 6};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Range() with custom step (greater then one) generates
+// the expected sequence when the last element does not fall on the
+// upper range limit. Sequences generated by Range() must not have
+// elements beyond the range limits.
+TEST(RangeTest, IntRangeWithCustomStepOverUpperBound) {
+ const ParamGenerator<int> gen = Range(0, 4, 3);
+ const int expected_values[] = {0, 3};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Verifies that Range works with user-defined types that define
+// copy constructor, operator=(), operator+(), and operator<().
+class DogAdder {
+ public:
+ explicit DogAdder(const char* a_value) : value_(a_value) {}
+ DogAdder(const DogAdder& other) : value_(other.value_.c_str()) {}
+
+ DogAdder operator=(const DogAdder& other) {
+ if (this != &other)
+ value_ = other.value_;
+ return *this;
+ }
+ DogAdder operator+(const DogAdder& other) const {
+ Message msg;
+ msg << value_.c_str() << other.value_.c_str();
+ return DogAdder(msg.GetString().c_str());
+ }
+ bool operator<(const DogAdder& other) const {
+ return value_ < other.value_;
+ }
+ const std::string& value() const { return value_; }
+
+ private:
+ std::string value_;
+};
+
+TEST(RangeTest, WorksWithACustomType) {
+ const ParamGenerator<DogAdder> gen =
+ Range(DogAdder("cat"), DogAdder("catdogdog"), DogAdder("dog"));
+ ParamGenerator<DogAdder>::iterator it = gen.begin();
+
+ ASSERT_FALSE(it == gen.end());
+ EXPECT_STREQ("cat", it->value().c_str());
+
+ ASSERT_FALSE(++it == gen.end());
+ EXPECT_STREQ("catdog", it->value().c_str());
+
+ EXPECT_TRUE(++it == gen.end());
+}
+
+class IntWrapper {
+ public:
+ explicit IntWrapper(int a_value) : value_(a_value) {}
+ IntWrapper(const IntWrapper& other) : value_(other.value_) {}
+
+ IntWrapper operator=(const IntWrapper& other) {
+ value_ = other.value_;
+ return *this;
+ }
+ // operator+() adds a different type.
+ IntWrapper operator+(int other) const { return IntWrapper(value_ + other); }
+ bool operator<(const IntWrapper& other) const {
+ return value_ < other.value_;
+ }
+ int value() const { return value_; }
+
+ private:
+ int value_;
+};
+
+TEST(RangeTest, WorksWithACustomTypeWithDifferentIncrementType) {
+ const ParamGenerator<IntWrapper> gen = Range(IntWrapper(0), IntWrapper(2));
+ ParamGenerator<IntWrapper>::iterator it = gen.begin();
+
+ ASSERT_FALSE(it == gen.end());
+ EXPECT_EQ(0, it->value());
+
+ ASSERT_FALSE(++it == gen.end());
+ EXPECT_EQ(1, it->value());
+
+ EXPECT_TRUE(++it == gen.end());
+}
+
+// Tests that ValuesIn() with an array parameter generates
+// the expected sequence.
+TEST(ValuesInTest, ValuesInArray) {
+ int array[] = {3, 5, 8};
+ const ParamGenerator<int> gen = ValuesIn(array);
+ VerifyGenerator(gen, array);
+}
+
+// Tests that ValuesIn() with a const array parameter generates
+// the expected sequence.
+TEST(ValuesInTest, ValuesInConstArray) {
+ const int array[] = {3, 5, 8};
+ const ParamGenerator<int> gen = ValuesIn(array);
+ VerifyGenerator(gen, array);
+}
+
+// Edge case. Tests that ValuesIn() with an array parameter containing a
+// single element generates the single element sequence.
+TEST(ValuesInTest, ValuesInSingleElementArray) {
+ int array[] = {42};
+ const ParamGenerator<int> gen = ValuesIn(array);
+ VerifyGenerator(gen, array);
+}
+
+// Tests that ValuesIn() generates the expected sequence for an STL
+// container (vector).
+TEST(ValuesInTest, ValuesInVector) {
+ typedef ::std::vector<int> ContainerType;
+ ContainerType values;
+ values.push_back(3);
+ values.push_back(5);
+ values.push_back(8);
+ const ParamGenerator<int> gen = ValuesIn(values);
+
+ const int expected_values[] = {3, 5, 8};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that ValuesIn() generates the expected sequence.
+TEST(ValuesInTest, ValuesInIteratorRange) {
+ typedef ::std::vector<int> ContainerType;
+ ContainerType values;
+ values.push_back(3);
+ values.push_back(5);
+ values.push_back(8);
+ const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end());
+
+ const int expected_values[] = {3, 5, 8};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that ValuesIn() provided with an iterator range specifying a
+// single value generates a single-element sequence.
+TEST(ValuesInTest, ValuesInSingleElementIteratorRange) {
+ typedef ::std::vector<int> ContainerType;
+ ContainerType values;
+ values.push_back(42);
+ const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end());
+
+ const int expected_values[] = {42};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Edge case. Tests that ValuesIn() provided with an empty iterator range
+// generates an empty sequence.
+TEST(ValuesInTest, ValuesInEmptyIteratorRange) {
+ typedef ::std::vector<int> ContainerType;
+ ContainerType values;
+ const ParamGenerator<int> gen = ValuesIn(values.begin(), values.end());
+
+ VerifyGeneratorIsEmpty(gen);
+}
+
+// Tests that the Values() generates the expected sequence.
+TEST(ValuesTest, ValuesWorks) {
+ const ParamGenerator<int> gen = Values(3, 5, 8);
+
+ const int expected_values[] = {3, 5, 8};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Values() generates the expected sequences from elements of
+// different types convertible to ParamGenerator's parameter type.
+TEST(ValuesTest, ValuesWorksForValuesOfCompatibleTypes) {
+ const ParamGenerator<double> gen = Values(3, 5.0f, 8.0);
+
+ const double expected_values[] = {3.0, 5.0, 8.0};
+ VerifyGenerator(gen, expected_values);
+}
+
+TEST(ValuesTest, ValuesWorksForMaxLengthList) {
+ const ParamGenerator<int> gen = Values(
+ 10, 20, 30, 40, 50, 60, 70, 80, 90, 100,
+ 110, 120, 130, 140, 150, 160, 170, 180, 190, 200,
+ 210, 220, 230, 240, 250, 260, 270, 280, 290, 300,
+ 310, 320, 330, 340, 350, 360, 370, 380, 390, 400,
+ 410, 420, 430, 440, 450, 460, 470, 480, 490, 500);
+
+ const int expected_values[] = {
+ 10, 20, 30, 40, 50, 60, 70, 80, 90, 100,
+ 110, 120, 130, 140, 150, 160, 170, 180, 190, 200,
+ 210, 220, 230, 240, 250, 260, 270, 280, 290, 300,
+ 310, 320, 330, 340, 350, 360, 370, 380, 390, 400,
+ 410, 420, 430, 440, 450, 460, 470, 480, 490, 500};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Edge case test. Tests that single-parameter Values() generates the sequence
+// with the single value.
+TEST(ValuesTest, ValuesWithSingleParameter) {
+ const ParamGenerator<int> gen = Values(42);
+
+ const int expected_values[] = {42};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Bool() generates sequence (false, true).
+TEST(BoolTest, BoolWorks) {
+ const ParamGenerator<bool> gen = Bool();
+
+ const bool expected_values[] = {false, true};
+ VerifyGenerator(gen, expected_values);
+}
+
+# if GTEST_HAS_COMBINE
+
+// Tests that Combine() with two parameters generates the expected sequence.
+TEST(CombineTest, CombineWithTwoParameters) {
+ const char* foo = "foo";
+ const char* bar = "bar";
+ const ParamGenerator<tuple<const char*, int> > gen =
+ Combine(Values(foo, bar), Values(3, 4));
+
+ tuple<const char*, int> expected_values[] = {
+ make_tuple(foo, 3), make_tuple(foo, 4),
+ make_tuple(bar, 3), make_tuple(bar, 4)};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that Combine() with three parameters generates the expected sequence.
+TEST(CombineTest, CombineWithThreeParameters) {
+ const ParamGenerator<tuple<int, int, int> > gen = Combine(Values(0, 1),
+ Values(3, 4),
+ Values(5, 6));
+ tuple<int, int, int> expected_values[] = {
+ make_tuple(0, 3, 5), make_tuple(0, 3, 6),
+ make_tuple(0, 4, 5), make_tuple(0, 4, 6),
+ make_tuple(1, 3, 5), make_tuple(1, 3, 6),
+ make_tuple(1, 4, 5), make_tuple(1, 4, 6)};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that the Combine() with the first parameter generating a single value
+// sequence generates a sequence with the number of elements equal to the
+// number of elements in the sequence generated by the second parameter.
+TEST(CombineTest, CombineWithFirstParameterSingleValue) {
+ const ParamGenerator<tuple<int, int> > gen = Combine(Values(42),
+ Values(0, 1));
+
+ tuple<int, int> expected_values[] = {make_tuple(42, 0), make_tuple(42, 1)};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that the Combine() with the second parameter generating a single value
+// sequence generates a sequence with the number of elements equal to the
+// number of elements in the sequence generated by the first parameter.
+TEST(CombineTest, CombineWithSecondParameterSingleValue) {
+ const ParamGenerator<tuple<int, int> > gen = Combine(Values(0, 1),
+ Values(42));
+
+ tuple<int, int> expected_values[] = {make_tuple(0, 42), make_tuple(1, 42)};
+ VerifyGenerator(gen, expected_values);
+}
+
+// Tests that when the first parameter produces an empty sequence,
+// Combine() produces an empty sequence, too.
+TEST(CombineTest, CombineWithFirstParameterEmptyRange) {
+ const ParamGenerator<tuple<int, int> > gen = Combine(Range(0, 0),
+ Values(0, 1));
+ VerifyGeneratorIsEmpty(gen);
+}
+
+// Tests that when the second parameter produces an empty sequence,
+// Combine() produces an empty sequence, too.
+TEST(CombineTest, CombineWithSecondParameterEmptyRange) {
+ const ParamGenerator<tuple<int, int> > gen = Combine(Values(0, 1),
+ Range(1, 1));
+ VerifyGeneratorIsEmpty(gen);
+}
+
+// Edge case. Tests that combine works with the maximum number
+// of parameters supported by Google Test (currently 10).
+TEST(CombineTest, CombineWithMaxNumberOfParameters) {
+ const char* foo = "foo";
+ const char* bar = "bar";
+ const ParamGenerator<tuple<const char*, int, int, int, int, int, int, int,
+ int, int> > gen = Combine(Values(foo, bar),
+ Values(1), Values(2),
+ Values(3), Values(4),
+ Values(5), Values(6),
+ Values(7), Values(8),
+ Values(9));
+
+ tuple<const char*, int, int, int, int, int, int, int, int, int>
+ expected_values[] = {make_tuple(foo, 1, 2, 3, 4, 5, 6, 7, 8, 9),
+ make_tuple(bar, 1, 2, 3, 4, 5, 6, 7, 8, 9)};
+ VerifyGenerator(gen, expected_values);
+}
+
+#if GTEST_LANG_CXX11
+
+class NonDefaultConstructAssignString {
+ public:
+ NonDefaultConstructAssignString(const std::string& s) : str_(s) {}
+
+ const std::string& str() const { return str_; }
+
+ private:
+ std::string str_;
+
+ // Not default constructible
+ NonDefaultConstructAssignString();
+ // Not assignable
+ void operator=(const NonDefaultConstructAssignString&);
+};
+
+TEST(CombineTest, NonDefaultConstructAssign) {
+ const ParamGenerator<tuple<int, NonDefaultConstructAssignString> > gen =
+ Combine(Values(0, 1), Values(NonDefaultConstructAssignString("A"),
+ NonDefaultConstructAssignString("B")));
+
+ ParamGenerator<tuple<int, NonDefaultConstructAssignString> >::iterator it =
+ gen.begin();
+
+ EXPECT_EQ(0, std::get<0>(*it));
+ EXPECT_EQ("A", std::get<1>(*it).str());
+ ++it;
+
+ EXPECT_EQ(0, std::get<0>(*it));
+ EXPECT_EQ("B", std::get<1>(*it).str());
+ ++it;
+
+ EXPECT_EQ(1, std::get<0>(*it));
+ EXPECT_EQ("A", std::get<1>(*it).str());
+ ++it;
+
+ EXPECT_EQ(1, std::get<0>(*it));
+ EXPECT_EQ("B", std::get<1>(*it).str());
+ ++it;
+
+ EXPECT_TRUE(it == gen.end());
+}
+
+#endif // GTEST_LANG_CXX11
+# endif // GTEST_HAS_COMBINE
+
+// Tests that an generator produces correct sequence after being
+// assigned from another generator.
+TEST(ParamGeneratorTest, AssignmentWorks) {
+ ParamGenerator<int> gen = Values(1, 2);
+ const ParamGenerator<int> gen2 = Values(3, 4);
+ gen = gen2;
+
+ const int expected_values[] = {3, 4};
+ VerifyGenerator(gen, expected_values);
+}
+
+// This test verifies that the tests are expanded and run as specified:
+// one test per element from the sequence produced by the generator
+// specified in INSTANTIATE_TEST_CASE_P. It also verifies that the test's
+// fixture constructor, SetUp(), and TearDown() have run and have been
+// supplied with the correct parameters.
+
+// The use of environment object allows detection of the case where no test
+// case functionality is run at all. In this case TestCaseTearDown will not
+// be able to detect missing tests, naturally.
+template <int kExpectedCalls>
+class TestGenerationEnvironment : public ::testing::Environment {
+ public:
+ static TestGenerationEnvironment* Instance() {
+ static TestGenerationEnvironment* instance = new TestGenerationEnvironment;
+ return instance;
+ }
+
+ void FixtureConstructorExecuted() { fixture_constructor_count_++; }
+ void SetUpExecuted() { set_up_count_++; }
+ void TearDownExecuted() { tear_down_count_++; }
+ void TestBodyExecuted() { test_body_count_++; }
+
+ virtual void TearDown() {
+ // If all MultipleTestGenerationTest tests have been de-selected
+ // by the filter flag, the following checks make no sense.
+ bool perform_check = false;
+
+ for (int i = 0; i < kExpectedCalls; ++i) {
+ Message msg;
+ msg << "TestsExpandedAndRun/" << i;
+ if (UnitTestOptions::FilterMatchesTest(
+ "TestExpansionModule/MultipleTestGenerationTest",
+ msg.GetString().c_str())) {
+ perform_check = true;
+ }
+ }
+ if (perform_check) {
+ EXPECT_EQ(kExpectedCalls, fixture_constructor_count_)
+ << "Fixture constructor of ParamTestGenerationTest test case "
+ << "has not been run as expected.";
+ EXPECT_EQ(kExpectedCalls, set_up_count_)
+ << "Fixture SetUp method of ParamTestGenerationTest test case "
+ << "has not been run as expected.";
+ EXPECT_EQ(kExpectedCalls, tear_down_count_)
+ << "Fixture TearDown method of ParamTestGenerationTest test case "
+ << "has not been run as expected.";
+ EXPECT_EQ(kExpectedCalls, test_body_count_)
+ << "Test in ParamTestGenerationTest test case "
+ << "has not been run as expected.";
+ }
+ }
+
+ private:
+ TestGenerationEnvironment() : fixture_constructor_count_(0), set_up_count_(0),
+ tear_down_count_(0), test_body_count_(0) {}
+
+ int fixture_constructor_count_;
+ int set_up_count_;
+ int tear_down_count_;
+ int test_body_count_;
+
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(TestGenerationEnvironment);
+};
+
+const int test_generation_params[] = {36, 42, 72};
+
+class TestGenerationTest : public TestWithParam<int> {
+ public:
+ enum {
+ PARAMETER_COUNT =
+ sizeof(test_generation_params)/sizeof(test_generation_params[0])
+ };
+
+ typedef TestGenerationEnvironment<PARAMETER_COUNT> Environment;
+
+ TestGenerationTest() {
+ Environment::Instance()->FixtureConstructorExecuted();
+ current_parameter_ = GetParam();
+ }
+ virtual void SetUp() {
+ Environment::Instance()->SetUpExecuted();
+ EXPECT_EQ(current_parameter_, GetParam());
+ }
+ virtual void TearDown() {
+ Environment::Instance()->TearDownExecuted();
+ EXPECT_EQ(current_parameter_, GetParam());
+ }
+
+ static void SetUpTestCase() {
+ bool all_tests_in_test_case_selected = true;
+
+ for (int i = 0; i < PARAMETER_COUNT; ++i) {
+ Message test_name;
+ test_name << "TestsExpandedAndRun/" << i;
+ if ( !UnitTestOptions::FilterMatchesTest(
+ "TestExpansionModule/MultipleTestGenerationTest",
+ test_name.GetString())) {
+ all_tests_in_test_case_selected = false;
+ }
+ }
+ EXPECT_TRUE(all_tests_in_test_case_selected)
+ << "When running the TestGenerationTest test case all of its tests\n"
+ << "must be selected by the filter flag for the test case to pass.\n"
+ << "If not all of them are enabled, we can't reliably conclude\n"
+ << "that the correct number of tests have been generated.";
+
+ collected_parameters_.clear();
+ }
+
+ static void TearDownTestCase() {
+ vector<int> expected_values(test_generation_params,
+ test_generation_params + PARAMETER_COUNT);
+ // Test execution order is not guaranteed by Google Test,
+ // so the order of values in collected_parameters_ can be
+ // different and we have to sort to compare.
+ sort(expected_values.begin(), expected_values.end());
+ sort(collected_parameters_.begin(), collected_parameters_.end());
+
+ EXPECT_TRUE(collected_parameters_ == expected_values);
+ }
+
+ protected:
+ int current_parameter_;
+ static vector<int> collected_parameters_;
+
+ private:
+ GTEST_DISALLOW_COPY_AND_ASSIGN_(TestGenerationTest);
+};
+vector<int> TestGenerationTest::collected_parameters_;
+
+TEST_P(TestGenerationTest, TestsExpandedAndRun) {
+ Environment::Instance()->TestBodyExecuted();
+ EXPECT_EQ(current_parameter_, GetParam());
+ collected_parameters_.push_back(GetParam());
+}
+INSTANTIATE_TEST_CASE_P(TestExpansionModule, TestGenerationTest,
+ ValuesIn(test_generation_params));
+
+// This test verifies that the element sequence (third parameter of
+// INSTANTIATE_TEST_CASE_P) is evaluated in InitGoogleTest() and neither at
+// the call site of INSTANTIATE_TEST_CASE_P nor in RUN_ALL_TESTS(). For
+// that, we declare param_value_ to be a static member of
+// GeneratorEvaluationTest and initialize it to 0. We set it to 1 in
+// main(), just before invocation of InitGoogleTest(). After calling
+// InitGoogleTest(), we set the value to 2. If the sequence is evaluated
+// before or after InitGoogleTest, INSTANTIATE_TEST_CASE_P will create a
+// test with parameter other than 1, and the test body will fail the
+// assertion.
+class GeneratorEvaluationTest : public TestWithParam<int> {
+ public:
+ static int param_value() { return param_value_; }
+ static void set_param_value(int param_value) { param_value_ = param_value; }
+
+ private:
+ static int param_value_;
+};
+int GeneratorEvaluationTest::param_value_ = 0;
+
+TEST_P(GeneratorEvaluationTest, GeneratorsEvaluatedInMain) {
+ EXPECT_EQ(1, GetParam());
+}
+INSTANTIATE_TEST_CASE_P(GenEvalModule,
+ GeneratorEvaluationTest,
+ Values(GeneratorEvaluationTest::param_value()));
+
+// Tests that generators defined in a different translation unit are
+// functional. Generator extern_gen is defined in gtest-param-test_test2.cc.
+extern ParamGenerator<int> extern_gen;
+class ExternalGeneratorTest : public TestWithParam<int> {};
+TEST_P(ExternalGeneratorTest, ExternalGenerator) {
+ // Sequence produced by extern_gen contains only a single value
+ // which we verify here.
+ EXPECT_EQ(GetParam(), 33);
+}
+INSTANTIATE_TEST_CASE_P(ExternalGeneratorModule,
+ ExternalGeneratorTest,
+ extern_gen);
+
+// Tests that a parameterized test case can be defined in one translation
+// unit and instantiated in another. This test will be instantiated in
+// gtest-param-test_test2.cc. ExternalInstantiationTest fixture class is
+// defined in gtest-param-test_test.h.
+TEST_P(ExternalInstantiationTest, IsMultipleOf33) {
+ EXPECT_EQ(0, GetParam() % 33);
+}
+
+// Tests that a parameterized test case can be instantiated with multiple
+// generators.
+class MultipleInstantiationTest : public TestWithParam<int> {};
+TEST_P(MultipleInstantiationTest, AllowsMultipleInstances) {
+}
+INSTANTIATE_TEST_CASE_P(Sequence1, MultipleInstantiationTest, Values(1, 2));
+INSTANTIATE_TEST_CASE_P(Sequence2, MultipleInstantiationTest, Range(3, 5));
+
+// Tests that a parameterized test case can be instantiated
+// in multiple translation units. This test will be instantiated
+// here and in gtest-param-test_test2.cc.
+// InstantiationInMultipleTranslationUnitsTest fixture class
+// is defined in gtest-param-test_test.h.
+TEST_P(InstantiationInMultipleTranslaionUnitsTest, IsMultipleOf42) {
+ EXPECT_EQ(0, GetParam() % 42);
+}
+INSTANTIATE_TEST_CASE_P(Sequence1,
+ InstantiationInMultipleTranslaionUnitsTest,
+ Values(42, 42*2));
+
+// Tests that each iteration of parameterized test runs in a separate test
+// object.
+class SeparateInstanceTest : public TestWithParam<int> {
+ public:
+ SeparateInstanceTest() : count_(0) {}
+
+ static void TearDownTestCase() {
+ EXPECT_GE(global_count_, 2)
+ << "If some (but not all) SeparateInstanceTest tests have been "
+ << "filtered out this test will fail. Make sure that all "
+ << "GeneratorEvaluationTest are selected or de-selected together "
+ << "by the test filter.";
+ }
+
+ protected:
+ int count_;
+ static int global_count_;
+};
+int SeparateInstanceTest::global_count_ = 0;
+
+TEST_P(SeparateInstanceTest, TestsRunInSeparateInstances) {
+ EXPECT_EQ(0, count_++);
+ global_count_++;
+}
+INSTANTIATE_TEST_CASE_P(FourElemSequence, SeparateInstanceTest, Range(1, 4));
+
+// Tests that all instantiations of a test have named appropriately. Test
+// defined with TEST_P(TestCaseName, TestName) and instantiated with
+// INSTANTIATE_TEST_CASE_P(SequenceName, TestCaseName, generator) must be named
+// SequenceName/TestCaseName.TestName/i, where i is the 0-based index of the
+// sequence element used to instantiate the test.
+class NamingTest : public TestWithParam<int> {};
+
+TEST_P(NamingTest, TestsReportCorrectNamesAndParameters) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+
+ EXPECT_STREQ("ZeroToFiveSequence/NamingTest", test_info->test_case_name());
+
+ Message index_stream;
+ index_stream << "TestsReportCorrectNamesAndParameters/" << GetParam();
+ EXPECT_STREQ(index_stream.GetString().c_str(), test_info->name());
+
+ EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param());
+}
+
+INSTANTIATE_TEST_CASE_P(ZeroToFiveSequence, NamingTest, Range(0, 5));
+
+// Tests that macros in test names are expanded correctly.
+class MacroNamingTest : public TestWithParam<int> {};
+
+#define PREFIX_WITH_FOO(test_name) Foo##test_name
+#define PREFIX_WITH_MACRO(test_name) Macro##test_name
+
+TEST_P(PREFIX_WITH_MACRO(NamingTest), PREFIX_WITH_FOO(SomeTestName)) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+
+ EXPECT_STREQ("FortyTwo/MacroNamingTest", test_info->test_case_name());
+ EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
+INSTANTIATE_TEST_CASE_P(FortyTwo, MacroNamingTest, Values(42));
+
+// Tests the same thing for non-parametrized tests.
+class MacroNamingTestNonParametrized : public ::testing::Test {};
+
+TEST_F(PREFIX_WITH_MACRO(NamingTestNonParametrized),
+ PREFIX_WITH_FOO(SomeTestName)) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+
+ EXPECT_STREQ("MacroNamingTestNonParametrized", test_info->test_case_name());
+ EXPECT_STREQ("FooSomeTestName", test_info->name());
+}
+
+// Tests that user supplied custom parameter names are working correctly.
+// Runs the test with a builtin helper method which uses PrintToString,
+// as well as a custom function and custom functor to ensure all possible
+// uses work correctly.
+class CustomFunctorNamingTest : public TestWithParam<std::string> {};
+TEST_P(CustomFunctorNamingTest, CustomTestNames) {}
+
+struct CustomParamNameFunctor {
+ std::string operator()(const ::testing::TestParamInfo<std::string>& inf) {
+ return inf.param;
+ }
+};
+
+INSTANTIATE_TEST_CASE_P(CustomParamNameFunctor,
+ CustomFunctorNamingTest,
+ Values(std::string("FunctorName")),
+ CustomParamNameFunctor());
+
+INSTANTIATE_TEST_CASE_P(AllAllowedCharacters,
+ CustomFunctorNamingTest,
+ Values("abcdefghijklmnopqrstuvwxyz",
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+ "01234567890_"),
+ CustomParamNameFunctor());
+
+inline std::string CustomParamNameFunction(
+ const ::testing::TestParamInfo<std::string>& inf) {
+ return inf.param;
+}
+
+class CustomFunctionNamingTest : public TestWithParam<std::string> {};
+TEST_P(CustomFunctionNamingTest, CustomTestNames) {}
+
+INSTANTIATE_TEST_CASE_P(CustomParamNameFunction,
+ CustomFunctionNamingTest,
+ Values(std::string("FunctionName")),
+ CustomParamNameFunction);
+
+#if GTEST_LANG_CXX11
+
+// Test custom naming with a lambda
+
+class CustomLambdaNamingTest : public TestWithParam<std::string> {};
+TEST_P(CustomLambdaNamingTest, CustomTestNames) {}
+
+INSTANTIATE_TEST_CASE_P(CustomParamNameLambda, CustomLambdaNamingTest,
+ Values(std::string("LambdaName")),
+ [](const ::testing::TestParamInfo<std::string>& inf) {
+ return inf.param;
+ });
+
+#endif // GTEST_LANG_CXX11
+
+TEST(CustomNamingTest, CheckNameRegistry) {
+ ::testing::UnitTest* unit_test = ::testing::UnitTest::GetInstance();
+ std::set<std::string> test_names;
+ for (int case_num = 0;
+ case_num < unit_test->total_test_case_count();
+ ++case_num) {
+ const ::testing::TestCase* test_case = unit_test->GetTestCase(case_num);
+ for (int test_num = 0;
+ test_num < test_case->total_test_count();
+ ++test_num) {
+ const ::testing::TestInfo* test_info = test_case->GetTestInfo(test_num);
+ test_names.insert(std::string(test_info->name()));
+ }
+ }
+ EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctorName"));
+ EXPECT_EQ(1u, test_names.count("CustomTestNames/FunctionName"));
+#if GTEST_LANG_CXX11
+ EXPECT_EQ(1u, test_names.count("CustomTestNames/LambdaName"));
+#endif // GTEST_LANG_CXX11
+}
+
+// Test a numeric name to ensure PrintToStringParamName works correctly.
+
+class CustomIntegerNamingTest : public TestWithParam<int> {};
+
+TEST_P(CustomIntegerNamingTest, TestsReportCorrectNames) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ Message test_name_stream;
+ test_name_stream << "TestsReportCorrectNames/" << GetParam();
+ EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
+}
+
+INSTANTIATE_TEST_CASE_P(PrintToString,
+ CustomIntegerNamingTest,
+ Range(0, 5),
+ ::testing::PrintToStringParamName());
+
+// Test a custom struct with PrintToString.
+
+struct CustomStruct {
+ explicit CustomStruct(int value) : x(value) {}
+ int x;
+};
+
+std::ostream& operator<<(std::ostream& stream, const CustomStruct& val) {
+ stream << val.x;
+ return stream;
+}
+
+class CustomStructNamingTest : public TestWithParam<CustomStruct> {};
+
+TEST_P(CustomStructNamingTest, TestsReportCorrectNames) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ Message test_name_stream;
+ test_name_stream << "TestsReportCorrectNames/" << GetParam();
+ EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
+}
+
+INSTANTIATE_TEST_CASE_P(PrintToString,
+ CustomStructNamingTest,
+ Values(CustomStruct(0), CustomStruct(1)),
+ ::testing::PrintToStringParamName());
+
+// Test that using a stateful parameter naming function works as expected.
+
+struct StatefulNamingFunctor {
+ StatefulNamingFunctor() : sum(0) {}
+ std::string operator()(const ::testing::TestParamInfo<int>& info) {
+ int value = info.param + sum;
+ sum += info.param;
+ return ::testing::PrintToString(value);
+ }
+ int sum;
+};
+
+class StatefulNamingTest : public ::testing::TestWithParam<int> {
+ protected:
+ StatefulNamingTest() : sum_(0) {}
+ int sum_;
+};
+
+TEST_P(StatefulNamingTest, TestsReportCorrectNames) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+ sum_ += GetParam();
+ Message test_name_stream;
+ test_name_stream << "TestsReportCorrectNames/" << sum_;
+ EXPECT_STREQ(test_name_stream.GetString().c_str(), test_info->name());
+}
+
+INSTANTIATE_TEST_CASE_P(StatefulNamingFunctor,
+ StatefulNamingTest,
+ Range(0, 5),
+ StatefulNamingFunctor());
+
+// Class that cannot be streamed into an ostream. It needs to be copyable
+// (and, in case of MSVC, also assignable) in order to be a test parameter
+// type. Its default copy constructor and assignment operator do exactly
+// what we need.
+class Unstreamable {
+ public:
+ explicit Unstreamable(int value) : value_(value) {}
+
+ private:
+ int value_;
+};
+
+class CommentTest : public TestWithParam<Unstreamable> {};
+
+TEST_P(CommentTest, TestsCorrectlyReportUnstreamableParams) {
+ const ::testing::TestInfo* const test_info =
+ ::testing::UnitTest::GetInstance()->current_test_info();
+
+ EXPECT_EQ(::testing::PrintToString(GetParam()), test_info->value_param());
+}
+
+INSTANTIATE_TEST_CASE_P(InstantiationWithComments,
+ CommentTest,
+ Values(Unstreamable(1)));
+
+// Verify that we can create a hierarchy of test fixtures, where the base
+// class fixture is not parameterized and the derived class is. In this case
+// ParameterizedDerivedTest inherits from NonParameterizedBaseTest. We
+// perform simple tests on both.
+class NonParameterizedBaseTest : public ::testing::Test {
+ public:
+ NonParameterizedBaseTest() : n_(17) { }
+ protected:
+ int n_;
+};
+
+class ParameterizedDerivedTest : public NonParameterizedBaseTest,
+ public ::testing::WithParamInterface<int> {
+ protected:
+ ParameterizedDerivedTest() : count_(0) { }
+ int count_;
+ static int global_count_;
+};
+
+int ParameterizedDerivedTest::global_count_ = 0;
+
+TEST_F(NonParameterizedBaseTest, FixtureIsInitialized) {
+ EXPECT_EQ(17, n_);
+}
+
+TEST_P(ParameterizedDerivedTest, SeesSequence) {
+ EXPECT_EQ(17, n_);
+ EXPECT_EQ(0, count_++);
+ EXPECT_EQ(GetParam(), global_count_++);
+}
+
+class ParameterizedDeathTest : public ::testing::TestWithParam<int> { };
+
+TEST_F(ParameterizedDeathTest, GetParamDiesFromTestF) {
+ EXPECT_DEATH_IF_SUPPORTED(GetParam(),
+ ".* value-parameterized test .*");
+}
+
+INSTANTIATE_TEST_CASE_P(RangeZeroToFive, ParameterizedDerivedTest, Range(0, 5));
+
+
+int main(int argc, char **argv) {
+ // Used in TestGenerationTest test case.
+ AddGlobalTestEnvironment(TestGenerationTest::Environment::Instance());
+ // Used in GeneratorEvaluationTest test case. Tests that the updated value
+ // will be picked up for instantiating tests in GeneratorEvaluationTest.
+ GeneratorEvaluationTest::set_param_value(1);
+
+ ::testing::InitGoogleTest(&argc, argv);
+
+ // Used in GeneratorEvaluationTest test case. Tests that value updated
+ // here will NOT be used for instantiating tests in
+ // GeneratorEvaluationTest.
+ GeneratorEvaluationTest::set_param_value(2);
+
+ return RUN_ALL_TESTS();
+}
Code Review / ric-plt / sdl.git / blobdiff