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New floating-point matchers: DoubleNear() and friends;

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AllOf() and AnyOf() can accept any number of arguments now in C++11 mode.
This commit is contained in:
zhanyong.wan 2013-06-18 18:49:51 +00:00
parent f4274520da
commit 616180e684
5 changed files with 455 additions and 20 deletions
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7
CHANGES
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@ -1,9 +1,12 @@
Changes for 1.7.0:
* All new improvements in Google Test 1.7.0.
* New feature: matchers WhenSorted(), WhenSortedBy(), IsEmpty(), and
SizeIs().
* New feature: matchers DoubleNear(), FloatNear(),
NanSensitiveDoubleNear(), NanSensitiveFloatNear(), WhenSorted(),
WhenSortedBy(), IsEmpty(), and SizeIs().
* Improvement: Google Mock can now be built as a DLL.
* Improvement: when compiled by a C++11 compiler, matchers AllOf()
and AnyOf() can accept an arbitrary number of matchers.
* Improvement: when exceptions are enabled, a mock method with no
default action now throws instead crashing the test.
* Improvement: function return types used in MOCK_METHOD*() macros can

210
include/gmock/gmock-matchers.h
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@ -38,6 +38,7 @@
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
#include <math.h>
#include <algorithm>
#include <limits>
#include <ostream> // NOLINT
@ -1406,6 +1407,91 @@ class BothOfMatcherImpl : public MatcherInterface<T> {
GTEST_DISALLOW_ASSIGN_(BothOfMatcherImpl);
};
#if GTEST_LANG_CXX11
// MatcherList provides mechanisms for storing a variable number of matchers in
// a list structure (ListType) and creating a combining matcher from such a
// list.
// The template is defined recursively using the following template paramters:
// * kSize is the length of the MatcherList.
// * Head is the type of the first matcher of the list.
// * Tail denotes the types of the remaining matchers of the list.
template <int kSize, typename Head, typename... Tail>
struct MatcherList {
typedef MatcherList<kSize - 1, Tail...> MatcherListTail;
typedef pair<Head, typename MatcherListTail::ListType> ListType;
// BuildList stores variadic type values in a nested pair structure.
// Example:
// MatcherList<3, int, string, float>::BuildList(5, "foo", 2.0) will return
// the corresponding result of type pair<int, pair<string, float>>.
static ListType BuildList(const Head& matcher, const Tail&... tail) {
return ListType(matcher, MatcherListTail::BuildList(tail...));
}
// CreateMatcher<T> creates a Matcher<T> from a given list of matchers (built
// by BuildList()). CombiningMatcher<T> is used to combine the matchers of the
// list. CombiningMatcher<T> must implement MatcherInterface<T> and have a
// constructor taking two Matcher<T>s as input.
template <typename T, template <typename /* T */> class CombiningMatcher>
static Matcher<T> CreateMatcher(const ListType& matchers) {
return Matcher<T>(new CombiningMatcher<T>(
SafeMatcherCast<T>(matchers.first),
MatcherListTail::template CreateMatcher<T, CombiningMatcher>(
matchers.second)));
}
};
// The following defines the base case for the recursive definition of
// MatcherList.
template <typename Matcher1, typename Matcher2>
struct MatcherList<2, Matcher1, Matcher2> {
typedef pair<Matcher1, Matcher2> ListType;
static ListType BuildList(const Matcher1& matcher1,
const Matcher2& matcher2) {
return pair<Matcher1, Matcher2>(matcher1, matcher2);
}
template <typename T, template <typename /* T */> class CombiningMatcher>
static Matcher<T> CreateMatcher(const ListType& matchers) {
return Matcher<T>(new CombiningMatcher<T>(
SafeMatcherCast<T>(matchers.first),
SafeMatcherCast<T>(matchers.second)));
}
};
// VariadicMatcher is used for the variadic implementation of
// AllOf(m_1, m_2, ...) and AnyOf(m_1, m_2, ...).
// CombiningMatcher<T> is used to recursively combine the provided matchers
// (of type Args...).
template <template <typename T> class CombiningMatcher, typename... Args>
class VariadicMatcher {
public:
VariadicMatcher(const Args&... matchers) // NOLINT
: matchers_(MatcherListType::BuildList(matchers...)) {}
// This template type conversion operator allows an
// VariadicMatcher<Matcher1, Matcher2...> object to match any type that
// all of the provided matchers (Matcher1, Matcher2, ...) can match.
template <typename T>
operator Matcher<T>() const {
return MatcherListType::template CreateMatcher<T, CombiningMatcher>(
matchers_);
}
private:
typedef MatcherList<sizeof...(Args), Args...> MatcherListType;
const typename MatcherListType::ListType matchers_;
GTEST_DISALLOW_ASSIGN_(VariadicMatcher);
};
template <typename... Args>
using AllOfMatcher = VariadicMatcher<BothOfMatcherImpl, Args...>;
#endif // GTEST_LANG_CXX11
// Used for implementing the AllOf(m_1, ..., m_n) matcher, which
// matches a value that matches all of the matchers m_1, ..., and m_n.
template <typename Matcher1, typename Matcher2>
@ -1493,6 +1579,13 @@ class EitherOfMatcherImpl : public MatcherInterface<T> {
GTEST_DISALLOW_ASSIGN_(EitherOfMatcherImpl);
};
#if GTEST_LANG_CXX11
// AnyOfMatcher is used for the variadic implementation of AnyOf(m_1, m_2, ...).
template <typename... Args>
using AnyOfMatcher = VariadicMatcher<EitherOfMatcherImpl, Args...>;
#endif // GTEST_LANG_CXX11
// Used for implementing the AnyOf(m_1, ..., m_n) matcher, which
// matches a value that matches at least one of the matchers m_1, ...,
// and m_n.
@ -1646,37 +1739,60 @@ MakePredicateFormatterFromMatcher(const M& matcher) {
return PredicateFormatterFromMatcher<M>(matcher);
}
// Implements the polymorphic floating point equality matcher, which
// matches two float values using ULP-based approximation. The
// template is meant to be instantiated with FloatType being either
// float or double.
// Implements the polymorphic floating point equality matcher, which matches
// two float values using ULP-based approximation or, optionally, a
// user-specified epsilon. The template is meant to be instantiated with
// FloatType being either float or double.
template <typename FloatType>
class FloatingEqMatcher {
public:
// Constructor for FloatingEqMatcher.
// The matcher's input will be compared with rhs. The matcher treats two
// NANs as equal if nan_eq_nan is true. Otherwise, under IEEE standards,
// equality comparisons between NANs will always return false.
// equality comparisons between NANs will always return false. We specify a
// negative max_abs_error_ term to indicate that ULP-based approximation will
// be used for comparison.
FloatingEqMatcher(FloatType rhs, bool nan_eq_nan) :
rhs_(rhs), nan_eq_nan_(nan_eq_nan) {}
rhs_(rhs), nan_eq_nan_(nan_eq_nan), max_abs_error_(-1) {
}
// Constructor that supports a user-specified max_abs_error that will be used
// for comparison instead of ULP-based approximation. The max absolute
// should be non-negative.
FloatingEqMatcher(FloatType rhs, bool nan_eq_nan, FloatType max_abs_error) :
rhs_(rhs), nan_eq_nan_(nan_eq_nan), max_abs_error_(max_abs_error) {
GTEST_CHECK_(max_abs_error >= 0)
<< ", where max_abs_error is" << max_abs_error;
}
// Implements floating point equality matcher as a Matcher<T>.
template <typename T>
class Impl : public MatcherInterface<T> {
public:
Impl(FloatType rhs, bool nan_eq_nan) :
rhs_(rhs), nan_eq_nan_(nan_eq_nan) {}
Impl(FloatType rhs, bool nan_eq_nan, FloatType max_abs_error) :
rhs_(rhs), nan_eq_nan_(nan_eq_nan), max_abs_error_(max_abs_error) {}
virtual bool MatchAndExplain(T value,
MatchResultListener* /* listener */) const {
const FloatingPoint<FloatType> lhs(value), rhs(rhs_);
// Compares NaNs first, if nan_eq_nan_ is true.
if (nan_eq_nan_ && lhs.is_nan()) {
return rhs.is_nan();
if (lhs.is_nan() || rhs.is_nan()) {
if (lhs.is_nan() && rhs.is_nan()) {
return nan_eq_nan_;
}
// One is nan; the other is not nan.
return false;
}
if (HasMaxAbsError()) {
// We perform an equality check so that inf will match inf, regardless
// of error bounds. If the result of value - rhs_ would result in
// overflow or if either value is inf, the default result is infinity,
// which should only match if max_abs_error_ is also infinity.
return value == rhs_ || fabs(value - rhs_) <= max_abs_error_;
} else {
return lhs.AlmostEquals(rhs);
}
return lhs.AlmostEquals(rhs);
}
virtual void DescribeTo(::std::ostream* os) const {
@ -1693,6 +1809,9 @@ class FloatingEqMatcher {
}
} else {
*os << "is approximately " << rhs_;
if (HasMaxAbsError()) {
*os << " (absolute error <= " << max_abs_error_ << ")";
}
}
os->precision(old_precision);
}
@ -1709,14 +1828,23 @@ class FloatingEqMatcher {
}
} else {
*os << "isn't approximately " << rhs_;
if (HasMaxAbsError()) {
*os << " (absolute error > " << max_abs_error_ << ")";
}
}
// Restore original precision.
os->precision(old_precision);
}
private:
bool HasMaxAbsError() const {
return max_abs_error_ >= 0;
}
const FloatType rhs_;
const bool nan_eq_nan_;
// max_abs_error will be used for value comparison when >= 0.
const FloatType max_abs_error_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
@ -1728,20 +1856,23 @@ class FloatingEqMatcher {
// by non-const reference, we may see them in code not conforming to
// the style. Therefore Google Mock needs to support them.)
operator Matcher<FloatType>() const {
return MakeMatcher(new Impl<FloatType>(rhs_, nan_eq_nan_));
return MakeMatcher(new Impl<FloatType>(rhs_, nan_eq_nan_, max_abs_error_));
}
operator Matcher<const FloatType&>() const {
return MakeMatcher(new Impl<const FloatType&>(rhs_, nan_eq_nan_));
return MakeMatcher(
new Impl<const FloatType&>(rhs_, nan_eq_nan_, max_abs_error_));
}
operator Matcher<FloatType&>() const {
return MakeMatcher(new Impl<FloatType&>(rhs_, nan_eq_nan_));
return MakeMatcher(new Impl<FloatType&>(rhs_, nan_eq_nan_, max_abs_error_));
}
private:
const FloatType rhs_;
const bool nan_eq_nan_;
// max_abs_error will be used for value comparison when >= 0.
const FloatType max_abs_error_;
GTEST_DISALLOW_ASSIGN_(FloatingEqMatcher);
};
@ -2931,18 +3062,50 @@ inline internal::FloatingEqMatcher<double> NanSensitiveDoubleEq(double rhs) {
return internal::FloatingEqMatcher<double>(rhs, true);
}
// Creates a matcher that matches any double argument approximately equal to
// rhs, up to the specified max absolute error bound, where two NANs are
// considered unequal. The max absolute error bound must be non-negative.
inline internal::FloatingEqMatcher<double> DoubleNear(
double rhs, double max_abs_error) {
return internal::FloatingEqMatcher<double>(rhs, false, max_abs_error);
}
// Creates a matcher that matches any double argument approximately equal to
// rhs, up to the specified max absolute error bound, including NaN values when
// rhs is NaN. The max absolute error bound must be non-negative.
inline internal::FloatingEqMatcher<double> NanSensitiveDoubleNear(
double rhs, double max_abs_error) {
return internal::FloatingEqMatcher<double>(rhs, true, max_abs_error);
}
// Creates a matcher that matches any float argument approximately
// equal to rhs, where two NANs are considered unequal.
inline internal::FloatingEqMatcher<float> FloatEq(float rhs) {
return internal::FloatingEqMatcher<float>(rhs, false);
}
// Creates a matcher that matches any double argument approximately
// Creates a matcher that matches any float argument approximately
// equal to rhs, including NaN values when rhs is NaN.
inline internal::FloatingEqMatcher<float> NanSensitiveFloatEq(float rhs) {
return internal::FloatingEqMatcher<float>(rhs, true);
}
// Creates a matcher that matches any float argument approximately equal to
// rhs, up to the specified max absolute error bound, where two NANs are
// considered unequal. The max absolute error bound must be non-negative.
inline internal::FloatingEqMatcher<float> FloatNear(
float rhs, float max_abs_error) {
return internal::FloatingEqMatcher<float>(rhs, false, max_abs_error);
}
// Creates a matcher that matches any float argument approximately equal to
// rhs, up to the specified max absolute error bound, including NaN values when
// rhs is NaN. The max absolute error bound must be non-negative.
inline internal::FloatingEqMatcher<float> NanSensitiveFloatNear(
float rhs, float max_abs_error) {
return internal::FloatingEqMatcher<float>(rhs, true, max_abs_error);
}
// Creates a matcher that matches a pointer (raw or smart) that points
// to a value that matches inner_matcher.
template <typename InnerMatcher>
@ -3341,6 +3504,21 @@ inline bool ExplainMatchResult(
return SafeMatcherCast<const T&>(matcher).MatchAndExplain(value, listener);
}
#if GTEST_LANG_CXX11
// Define variadic matcher versions. They are overloaded in
// gmock-generated-matchers.h for the cases supported by pre C++11 compilers.
template <typename... Args>
inline internal::AllOfMatcher<Args...> AllOf(const Args&... matchers) {
return internal::AllOfMatcher<Args...>(matchers...);
}
template <typename... Args>
inline internal::AnyOfMatcher<Args...> AnyOf(const Args&... matchers) {
return internal::AnyOfMatcher<Args...>(matchers...);
}
#endif // GTEST_LANG_CXX11
// AllArgs(m) is a synonym of m. This is useful in
//
// EXPECT_CALL(foo, Bar(_, _)).With(AllArgs(Eq()));

2
test/gmock-generated-actions_test.cc
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@ -376,7 +376,7 @@ class SubstractAction : public ActionInterface<int(int, int)> { // NOLINT
TEST(WithArgsTest, NonInvokeAction) {
Action<int(const string&, int, int)> a = // NOLINT
WithArgs<2, 1>(MakeAction(new SubstractAction));
EXPECT_EQ(8, a.Perform(make_tuple(CharPtr("hi"), 2, 10)));
EXPECT_EQ(8, a.Perform(make_tuple(string("hi"), 2, 10)));
}
// Tests using WithArgs to pass all original arguments in the original order.

254
test/gmock-matchers_test.cc
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@ -41,6 +41,7 @@
#include <functional>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <set>
@ -83,11 +84,13 @@ using testing::AnyOf;
using testing::ByRef;
using testing::ContainsRegex;
using testing::DoubleEq;
using testing::DoubleNear;
using testing::EndsWith;
using testing::Eq;
using testing::ExplainMatchResult;
using testing::Field;
using testing::FloatEq;
using testing::FloatNear;
using testing::Ge;
using testing::Gt;
using testing::HasSubstr;
@ -105,7 +108,9 @@ using testing::MatcherInterface;
using testing::Matches;
using testing::MatchesRegex;
using testing::NanSensitiveDoubleEq;
using testing::NanSensitiveDoubleNear;
using testing::NanSensitiveFloatEq;
using testing::NanSensitiveFloatNear;
using testing::Ne;
using testing::Not;
using testing::NotNull;
@ -2021,6 +2026,28 @@ TEST(AllOfTest, MatchesWhenAllMatch) {
Ne(9), Ne(10)));
}
#if GTEST_LANG_CXX11
// Tests the variadic version of the AllOfMatcher.
TEST(AllOfTest, VariadicMatchesWhenAllMatch) {
// Make sure AllOf is defined in the right namespace and does not depend on
// ADL.
::testing::AllOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
Matcher<int> m = AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8),
Ne(9), Ne(10), Ne(11));
EXPECT_THAT(Describe(m), EndsWith("and (isn't equal to 11))))))))))"));
AllOfMatches(11, m);
AllOfMatches(50, AllOf(Ne(1), Ne(2), Ne(3), Ne(4), Ne(5), Ne(6), Ne(7), Ne(8),
Ne(9), Ne(10), Ne(11), Ne(12), Ne(13), Ne(14), Ne(15),
Ne(16), Ne(17), Ne(18), Ne(19), Ne(20), Ne(21), Ne(22),
Ne(23), Ne(24), Ne(25), Ne(26), Ne(27), Ne(28), Ne(29),
Ne(30), Ne(31), Ne(32), Ne(33), Ne(34), Ne(35), Ne(36),
Ne(37), Ne(38), Ne(39), Ne(40), Ne(41), Ne(42), Ne(43),
Ne(44), Ne(45), Ne(46), Ne(47), Ne(48), Ne(49),
Ne(50)));
}
#endif // GTEST_LANG_CXX11
// Tests that AllOf(m1, ..., mn) describes itself properly.
TEST(AllOfTest, CanDescribeSelf) {
Matcher<int> m;
@ -2194,6 +2221,24 @@ TEST(AnyOfTest, MatchesWhenAnyMatches) {
AnyOfMatches(10, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
}
#if GTEST_LANG_CXX11
// Tests the variadic version of the AnyOfMatcher.
TEST(AnyOfTest, VariadicMatchesWhenAnyMatches) {
// Also make sure AnyOf is defined in the right namespace and does not depend
// on ADL.
Matcher<int> m = ::testing::AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
EXPECT_THAT(Describe(m), EndsWith("or (is equal to 11))))))))))"));
AnyOfMatches(11, m);
AnyOfMatches(50, AnyOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50));
}
#endif // GTEST_LANG_CXX11
// Tests that AnyOf(m1, ..., mn) describes itself properly.
TEST(AnyOfTest, CanDescribeSelf) {
Matcher<int> m;
@ -2723,6 +2768,95 @@ RawType FloatingPointTest<RawType>::nan1_;
template <typename RawType>
RawType FloatingPointTest<RawType>::nan2_;
// Tests floating-point matchers with fixed epsilons.
template <typename RawType>
class FloatingPointNearTest : public FloatingPointTest<RawType> {
protected:
typedef FloatingPointTest<RawType> ParentType;
// A battery of tests for FloatingEqMatcher::Matches with a fixed epsilon.
// matcher_maker is a pointer to a function which creates a FloatingEqMatcher.
void TestNearMatches(
testing::internal::FloatingEqMatcher<RawType>
(*matcher_maker)(RawType, RawType)) {
Matcher<RawType> m1 = matcher_maker(0.0, 0.0);
EXPECT_TRUE(m1.Matches(0.0));
EXPECT_TRUE(m1.Matches(-0.0));
EXPECT_FALSE(m1.Matches(ParentType::close_to_positive_zero_));
EXPECT_FALSE(m1.Matches(ParentType::close_to_negative_zero_));
EXPECT_FALSE(m1.Matches(1.0));
Matcher<RawType> m2 = matcher_maker(0.0, 1.0);
EXPECT_TRUE(m2.Matches(0.0));
EXPECT_TRUE(m2.Matches(-0.0));
EXPECT_TRUE(m2.Matches(1.0));
EXPECT_TRUE(m2.Matches(-1.0));
EXPECT_FALSE(m2.Matches(ParentType::close_to_one_));
EXPECT_FALSE(m2.Matches(-ParentType::close_to_one_));
// Check that inf matches inf, regardless of the of the specified max
// absolute error.
Matcher<RawType> m3 = matcher_maker(ParentType::infinity_, 0.0);
EXPECT_TRUE(m3.Matches(ParentType::infinity_));
EXPECT_FALSE(m3.Matches(ParentType::close_to_infinity_));
EXPECT_FALSE(m3.Matches(-ParentType::infinity_));
Matcher<RawType> m4 = matcher_maker(-ParentType::infinity_, 0.0);
EXPECT_TRUE(m4.Matches(-ParentType::infinity_));
EXPECT_FALSE(m4.Matches(-ParentType::close_to_infinity_));
EXPECT_FALSE(m4.Matches(ParentType::infinity_));
// Test various overflow scenarios.
Matcher<RawType> m5 = matcher_maker(
std::numeric_limits<RawType>::max(),
std::numeric_limits<RawType>::max());
EXPECT_TRUE(m5.Matches(std::numeric_limits<RawType>::max()));
EXPECT_FALSE(m5.Matches(-std::numeric_limits<RawType>::max()));
Matcher<RawType> m6 = matcher_maker(
-std::numeric_limits<RawType>::max(),
std::numeric_limits<RawType>::max());
EXPECT_FALSE(m6.Matches(std::numeric_limits<RawType>::max()));
EXPECT_TRUE(m6.Matches(-std::numeric_limits<RawType>::max()));
Matcher<RawType> m7 = matcher_maker(std::numeric_limits<RawType>::max(), 0);
EXPECT_TRUE(m7.Matches(std::numeric_limits<RawType>::max()));
EXPECT_FALSE(m7.Matches(-std::numeric_limits<RawType>::max()));
Matcher<RawType> m8 = matcher_maker(
-std::numeric_limits<RawType>::max(), 0);
EXPECT_FALSE(m8.Matches(std::numeric_limits<RawType>::max()));
EXPECT_TRUE(m8.Matches(-std::numeric_limits<RawType>::max()));
// The difference between max() and -max() normally overflows to infinity,
// but it should still match if the max_abs_error is also infinity.
Matcher<RawType> m9 = matcher_maker(
std::numeric_limits<RawType>::max(), ParentType::infinity_);
EXPECT_TRUE(m8.Matches(-std::numeric_limits<RawType>::max()));
// matcher_maker can produce a Matcher<const RawType&>, which is needed in
// some cases.
Matcher<const RawType&> m10 = matcher_maker(0.0, 1.0);
EXPECT_TRUE(m10.Matches(-0.0));
EXPECT_TRUE(m10.Matches(ParentType::close_to_positive_zero_));
EXPECT_FALSE(m10.Matches(ParentType::close_to_one_));
// matcher_maker can produce a Matcher<RawType&>, which is needed in some
// cases.
Matcher<RawType&> m11 = matcher_maker(0.0, 1.0);
RawType x = 0.0;
EXPECT_TRUE(m11.Matches(x));
x = 1.0f;
EXPECT_TRUE(m11.Matches(x));
x = -1.0f;
EXPECT_TRUE(m11.Matches(x));
x = 1.1f;
EXPECT_FALSE(m11.Matches(x));
x = -1.1f;
EXPECT_FALSE(m11.Matches(x));
}
};
// Instantiate FloatingPointTest for testing floats.
typedef FloatingPointTest<float> FloatTest;
@ -2778,6 +2912,66 @@ TEST_F(FloatTest, NanSensitiveFloatEqCanDescribeSelf) {
EXPECT_EQ("isn't NaN", DescribeNegation(m3));
}
// Instantiate FloatingPointTest for testing floats with a user-specified
// max absolute error.
typedef FloatingPointNearTest<float> FloatNearTest;
TEST_F(FloatNearTest, FloatNearMatches) {
TestNearMatches(&FloatNear);
}
TEST_F(FloatNearTest, NanSensitiveFloatNearApproximatelyMatchesFloats) {
TestNearMatches(&NanSensitiveFloatNear);
}
TEST_F(FloatNearTest, FloatNearCanDescribeSelf) {
Matcher<float> m1 = FloatNear(2.0f, 0.5f);
EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
EXPECT_EQ(
"isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
Matcher<float> m2 = FloatNear(0.5f, 0.5f);
EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
EXPECT_EQ(
"isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
Matcher<float> m3 = FloatNear(nan1_, 0.0);
EXPECT_EQ("never matches", Describe(m3));
EXPECT_EQ("is anything", DescribeNegation(m3));
}
TEST_F(FloatNearTest, NanSensitiveFloatNearCanDescribeSelf) {
Matcher<float> m1 = NanSensitiveFloatNear(2.0f, 0.5f);
EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
EXPECT_EQ(
"isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
Matcher<float> m2 = NanSensitiveFloatNear(0.5f, 0.5f);
EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
EXPECT_EQ(
"isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
Matcher<float> m3 = NanSensitiveFloatNear(nan1_, 0.1f);
EXPECT_EQ("is NaN", Describe(m3));
EXPECT_EQ("isn't NaN", DescribeNegation(m3));
}
TEST_F(FloatNearTest, FloatNearCannotMatchNaN) {
// FloatNear never matches NaN.
Matcher<float> m = FloatNear(ParentType::nan1_, 0.1f);
EXPECT_FALSE(m.Matches(nan1_));
EXPECT_FALSE(m.Matches(nan2_));
EXPECT_FALSE(m.Matches(1.0));
}
TEST_F(FloatNearTest, NanSensitiveFloatNearCanMatchNaN) {
// NanSensitiveFloatNear will match NaN.
Matcher<float> m = NanSensitiveFloatNear(nan1_, 0.1f);
EXPECT_TRUE(m.Matches(nan1_));
EXPECT_TRUE(m.Matches(nan2_));
EXPECT_FALSE(m.Matches(1.0));
}
// Instantiate FloatingPointTest for testing doubles.
typedef FloatingPointTest<double> DoubleTest;
@ -2833,6 +3027,66 @@ TEST_F(DoubleTest, NanSensitiveDoubleEqCanDescribeSelf) {
EXPECT_EQ("isn't NaN", DescribeNegation(m3));
}
// Instantiate FloatingPointTest for testing floats with a user-specified
// max absolute error.
typedef FloatingPointNearTest<double> DoubleNearTest;
TEST_F(DoubleNearTest, DoubleNearMatches) {
TestNearMatches(&DoubleNear);
}
TEST_F(DoubleNearTest, NanSensitiveDoubleNearApproximatelyMatchesDoubles) {
TestNearMatches(&NanSensitiveDoubleNear);
}
TEST_F(DoubleNearTest, DoubleNearCanDescribeSelf) {
Matcher<double> m1 = DoubleNear(2.0, 0.5);
EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
EXPECT_EQ(
"isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
Matcher<double> m2 = DoubleNear(0.5, 0.5);
EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
EXPECT_EQ(
"isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
Matcher<double> m3 = DoubleNear(nan1_, 0.0);
EXPECT_EQ("never matches", Describe(m3));
EXPECT_EQ("is anything", DescribeNegation(m3));
}
TEST_F(DoubleNearTest, NanSensitiveDoubleNearCanDescribeSelf) {
Matcher<double> m1 = NanSensitiveDoubleNear(2.0, 0.5);
EXPECT_EQ("is approximately 2 (absolute error <= 0.5)", Describe(m1));
EXPECT_EQ(
"isn't approximately 2 (absolute error > 0.5)", DescribeNegation(m1));
Matcher<double> m2 = NanSensitiveDoubleNear(0.5, 0.5);
EXPECT_EQ("is approximately 0.5 (absolute error <= 0.5)", Describe(m2));
EXPECT_EQ(
"isn't approximately 0.5 (absolute error > 0.5)", DescribeNegation(m2));
Matcher<double> m3 = NanSensitiveDoubleNear(nan1_, 0.1);
EXPECT_EQ("is NaN", Describe(m3));
EXPECT_EQ("isn't NaN", DescribeNegation(m3));
}
TEST_F(DoubleNearTest, DoubleNearCannotMatchNaN) {
// DoubleNear never matches NaN.
Matcher<double> m = DoubleNear(ParentType::nan1_, 0.1);
EXPECT_FALSE(m.Matches(nan1_));
EXPECT_FALSE(m.Matches(nan2_));
EXPECT_FALSE(m.Matches(1.0));
}
TEST_F(DoubleNearTest, NanSensitiveDoubleNearCanMatchNaN) {
// NanSensitiveDoubleNear will match NaN.
Matcher<double> m = NanSensitiveDoubleNear(nan1_, 0.1);
EXPECT_TRUE(m.Matches(nan1_));
EXPECT_TRUE(m.Matches(nan2_));
EXPECT_FALSE(m.Matches(1.0));
}
TEST(PointeeTest, RawPointer) {
const Matcher<int*> m = Pointee(Ge(0));

2
test/gmock-more-actions_test.cc
View File

@ -327,7 +327,7 @@ TEST(InvokeTest, FunctionThatTakes10Arguments) {
TEST(InvokeTest, FunctionWithUnusedParameters) {
Action<int(int, int, double, const string&)> a1 =
Invoke(SumOfFirst2);
EXPECT_EQ(12, a1.Perform(make_tuple(10, 2, 5.6, CharPtr("hi"))));
EXPECT_EQ(12, a1.Perform(make_tuple(10, 2, 5.6, string("hi"))));
Action<int(int, int, bool, int*)> a2 =
Invoke(SumOfFirst2);