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Diffstat (limited to 'src/s3select/rapidjson/thirdparty/gtest/googletest/test/gtest-tuple_test.cc')
-rw-r--r-- | src/s3select/rapidjson/thirdparty/gtest/googletest/test/gtest-tuple_test.cc | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/src/s3select/rapidjson/thirdparty/gtest/googletest/test/gtest-tuple_test.cc b/src/s3select/rapidjson/thirdparty/gtest/googletest/test/gtest-tuple_test.cc new file mode 100644 index 000000000..bfaa3e0ac --- /dev/null +++ b/src/s3select/rapidjson/thirdparty/gtest/googletest/test/gtest-tuple_test.cc @@ -0,0 +1,320 @@ +// 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) + +#include "gtest/internal/gtest-tuple.h" +#include <utility> +#include "gtest/gtest.h" + +namespace { + +using ::std::tr1::get; +using ::std::tr1::make_tuple; +using ::std::tr1::tuple; +using ::std::tr1::tuple_element; +using ::std::tr1::tuple_size; +using ::testing::StaticAssertTypeEq; + +// Tests that tuple_element<K, tuple<T0, T1, ..., TN> >::type returns TK. +TEST(tuple_element_Test, ReturnsElementType) { + StaticAssertTypeEq<int, tuple_element<0, tuple<int, char> >::type>(); + StaticAssertTypeEq<int&, tuple_element<1, tuple<double, int&> >::type>(); + StaticAssertTypeEq<bool, tuple_element<2, tuple<double, int, bool> >::type>(); +} + +// Tests that tuple_size<T>::value gives the number of fields in tuple +// type T. +TEST(tuple_size_Test, ReturnsNumberOfFields) { + EXPECT_EQ(0, +tuple_size<tuple<> >::value); + EXPECT_EQ(1, +tuple_size<tuple<void*> >::value); + EXPECT_EQ(1, +tuple_size<tuple<char> >::value); + EXPECT_EQ(1, +(tuple_size<tuple<tuple<int, double> > >::value)); + EXPECT_EQ(2, +(tuple_size<tuple<int&, const char> >::value)); + EXPECT_EQ(3, +(tuple_size<tuple<char*, void, const bool&> >::value)); +} + +// Tests comparing a tuple with itself. +TEST(ComparisonTest, ComparesWithSelf) { + const tuple<int, char, bool> a(5, 'a', false); + + EXPECT_TRUE(a == a); + EXPECT_FALSE(a != a); +} + +// Tests comparing two tuples with the same value. +TEST(ComparisonTest, ComparesEqualTuples) { + const tuple<int, bool> a(5, true), b(5, true); + + EXPECT_TRUE(a == b); + EXPECT_FALSE(a != b); +} + +// Tests comparing two different tuples that have no reference fields. +TEST(ComparisonTest, ComparesUnequalTuplesWithoutReferenceFields) { + typedef tuple<const int, char> FooTuple; + + const FooTuple a(0, 'x'); + const FooTuple b(1, 'a'); + + EXPECT_TRUE(a != b); + EXPECT_FALSE(a == b); + + const FooTuple c(1, 'b'); + + EXPECT_TRUE(b != c); + EXPECT_FALSE(b == c); +} + +// Tests comparing two different tuples that have reference fields. +TEST(ComparisonTest, ComparesUnequalTuplesWithReferenceFields) { + typedef tuple<int&, const char&> FooTuple; + + int i = 5; + const char ch = 'a'; + const FooTuple a(i, ch); + + int j = 6; + const FooTuple b(j, ch); + + EXPECT_TRUE(a != b); + EXPECT_FALSE(a == b); + + j = 5; + const char ch2 = 'b'; + const FooTuple c(j, ch2); + + EXPECT_TRUE(b != c); + EXPECT_FALSE(b == c); +} + +// Tests that a tuple field with a reference type is an alias of the +// variable it's supposed to reference. +TEST(ReferenceFieldTest, IsAliasOfReferencedVariable) { + int n = 0; + tuple<bool, int&> t(true, n); + + n = 1; + EXPECT_EQ(n, get<1>(t)) + << "Changing a underlying variable should update the reference field."; + + // Makes sure that the implementation doesn't do anything funny with + // the & operator for the return type of get<>(). + EXPECT_EQ(&n, &(get<1>(t))) + << "The address of a reference field should equal the address of " + << "the underlying variable."; + + get<1>(t) = 2; + EXPECT_EQ(2, n) + << "Changing a reference field should update the underlying variable."; +} + +// Tests that tuple's default constructor default initializes each field. +// This test needs to compile without generating warnings. +TEST(TupleConstructorTest, DefaultConstructorDefaultInitializesEachField) { + // The TR1 report requires that tuple's default constructor default + // initializes each field, even if it's a primitive type. If the + // implementation forgets to do this, this test will catch it by + // generating warnings about using uninitialized variables (assuming + // a decent compiler). + + tuple<> empty; + + tuple<int> a1, b1; + b1 = a1; + EXPECT_EQ(0, get<0>(b1)); + + tuple<int, double> a2, b2; + b2 = a2; + EXPECT_EQ(0, get<0>(b2)); + EXPECT_EQ(0.0, get<1>(b2)); + + tuple<double, char, bool*> a3, b3; + b3 = a3; + EXPECT_EQ(0.0, get<0>(b3)); + EXPECT_EQ('\0', get<1>(b3)); + EXPECT_TRUE(get<2>(b3) == NULL); + + tuple<int, int, int, int, int, int, int, int, int, int> a10, b10; + b10 = a10; + EXPECT_EQ(0, get<0>(b10)); + EXPECT_EQ(0, get<1>(b10)); + EXPECT_EQ(0, get<2>(b10)); + EXPECT_EQ(0, get<3>(b10)); + EXPECT_EQ(0, get<4>(b10)); + EXPECT_EQ(0, get<5>(b10)); + EXPECT_EQ(0, get<6>(b10)); + EXPECT_EQ(0, get<7>(b10)); + EXPECT_EQ(0, get<8>(b10)); + EXPECT_EQ(0, get<9>(b10)); +} + +// Tests constructing a tuple from its fields. +TEST(TupleConstructorTest, ConstructsFromFields) { + int n = 1; + // Reference field. + tuple<int&> a(n); + EXPECT_EQ(&n, &(get<0>(a))); + + // Non-reference fields. + tuple<int, char> b(5, 'a'); + EXPECT_EQ(5, get<0>(b)); + EXPECT_EQ('a', get<1>(b)); + + // Const reference field. + const int m = 2; + tuple<bool, const int&> c(true, m); + EXPECT_TRUE(get<0>(c)); + EXPECT_EQ(&m, &(get<1>(c))); +} + +// Tests tuple's copy constructor. +TEST(TupleConstructorTest, CopyConstructor) { + tuple<double, bool> a(0.0, true); + tuple<double, bool> b(a); + + EXPECT_DOUBLE_EQ(0.0, get<0>(b)); + EXPECT_TRUE(get<1>(b)); +} + +// Tests constructing a tuple from another tuple that has a compatible +// but different type. +TEST(TupleConstructorTest, ConstructsFromDifferentTupleType) { + tuple<int, int, char> a(0, 1, 'a'); + tuple<double, long, int> b(a); + + EXPECT_DOUBLE_EQ(0.0, get<0>(b)); + EXPECT_EQ(1, get<1>(b)); + EXPECT_EQ('a', get<2>(b)); +} + +// Tests constructing a 2-tuple from an std::pair. +TEST(TupleConstructorTest, ConstructsFromPair) { + ::std::pair<int, char> a(1, 'a'); + tuple<int, char> b(a); + tuple<int, const char&> c(a); +} + +// Tests assigning a tuple to another tuple with the same type. +TEST(TupleAssignmentTest, AssignsToSameTupleType) { + const tuple<int, long> a(5, 7L); + tuple<int, long> b; + b = a; + EXPECT_EQ(5, get<0>(b)); + EXPECT_EQ(7L, get<1>(b)); +} + +// Tests assigning a tuple to another tuple with a different but +// compatible type. +TEST(TupleAssignmentTest, AssignsToDifferentTupleType) { + const tuple<int, long, bool> a(1, 7L, true); + tuple<long, int, bool> b; + b = a; + EXPECT_EQ(1L, get<0>(b)); + EXPECT_EQ(7, get<1>(b)); + EXPECT_TRUE(get<2>(b)); +} + +// Tests assigning an std::pair to a 2-tuple. +TEST(TupleAssignmentTest, AssignsFromPair) { + const ::std::pair<int, bool> a(5, true); + tuple<int, bool> b; + b = a; + EXPECT_EQ(5, get<0>(b)); + EXPECT_TRUE(get<1>(b)); + + tuple<long, bool> c; + c = a; + EXPECT_EQ(5L, get<0>(c)); + EXPECT_TRUE(get<1>(c)); +} + +// A fixture for testing big tuples. +class BigTupleTest : public testing::Test { + protected: + typedef tuple<int, int, int, int, int, int, int, int, int, int> BigTuple; + + BigTupleTest() : + a_(1, 0, 0, 0, 0, 0, 0, 0, 0, 2), + b_(1, 0, 0, 0, 0, 0, 0, 0, 0, 3) {} + + BigTuple a_, b_; +}; + +// Tests constructing big tuples. +TEST_F(BigTupleTest, Construction) { + BigTuple a; + BigTuple b(b_); +} + +// Tests that get<N>(t) returns the N-th (0-based) field of tuple t. +TEST_F(BigTupleTest, get) { + EXPECT_EQ(1, get<0>(a_)); + EXPECT_EQ(2, get<9>(a_)); + + // Tests that get() works on a const tuple too. + const BigTuple a(a_); + EXPECT_EQ(1, get<0>(a)); + EXPECT_EQ(2, get<9>(a)); +} + +// Tests comparing big tuples. +TEST_F(BigTupleTest, Comparisons) { + EXPECT_TRUE(a_ == a_); + EXPECT_FALSE(a_ != a_); + + EXPECT_TRUE(a_ != b_); + EXPECT_FALSE(a_ == b_); +} + +TEST(MakeTupleTest, WorksForScalarTypes) { + tuple<bool, int> a; + a = make_tuple(true, 5); + EXPECT_TRUE(get<0>(a)); + EXPECT_EQ(5, get<1>(a)); + + tuple<char, int, long> b; + b = make_tuple('a', 'b', 5); + EXPECT_EQ('a', get<0>(b)); + EXPECT_EQ('b', get<1>(b)); + EXPECT_EQ(5, get<2>(b)); +} + +TEST(MakeTupleTest, WorksForPointers) { + int a[] = { 1, 2, 3, 4 }; + const char* const str = "hi"; + int* const p = a; + + tuple<const char*, int*> t; + t = make_tuple(str, p); + EXPECT_EQ(str, get<0>(t)); + EXPECT_EQ(p, get<1>(t)); +} + +} // namespace |