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Add tuple version of Optional() matches. This allows Optional() to be used in Pointwise matchers.

PiperOrigin-RevId: 265110864
This commit is contained in:
Abseil Team 2019-08-23 15:30:05 -04:00 committed by Xiaoyi Zhang
parent db1b739943
commit ed2eef6543
2 changed files with 84 additions and 2 deletions
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51
googlemock/include/gmock/gmock-matchers.h
View File

@ -3239,10 +3239,16 @@ class OptionalMatcher {
: value_matcher_(value_matcher) {}
template <typename Optional>
operator Matcher<Optional>() const {
operator Matcher<Optional>() const { // NOLINT
return Matcher<Optional>(new Impl<const Optional&>(value_matcher_));
}
template <typename Optional1, typename ValueType2>
operator Matcher<std::tuple<Optional1, ValueType2>>() const { // NOLINT
return MakeMatcher(
new PairImpl<Optional1, ValueType2>(value_matcher_));
}
template <typename Optional>
class Impl : public MatcherInterface<Optional> {
public:
@ -3281,6 +3287,49 @@ class OptionalMatcher {
GTEST_DISALLOW_ASSIGN_(Impl);
};
template <typename Optional1, typename ValueType2>
class PairImpl : public MatcherInterface<std::tuple<Optional1, ValueType2>> {
public:
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(Optional1) Optional1View;
typedef typename Optional1View::value_type ValueType1;
typedef std::tuple<Optional1, ValueType2> OptionalTuple;
typedef std::tuple<ValueType1, ValueType2> ValuePair;
explicit PairImpl(const ValueMatcher& value_matcher)
: value_matcher_(MatcherCast<ValuePair>(value_matcher)) {}
void DescribeTo(::std::ostream* os) const override {
*os << "are optionals where the values ";
value_matcher_.DescribeTo(os);
}
void DescribeNegationTo(::std::ostream* os) const override {
*os << "are optionals where the values ";
value_matcher_.DescribeNegationTo(os);
}
bool MatchAndExplain(OptionalTuple optional_tuple,
MatchResultListener* listener) const override {
const auto& optional1 = std::get<0>(optional_tuple);
const auto& value2 = std::get<1>(optional_tuple);
if (!optional1) {
*listener << "left is nullopt";
return false;
}
const ValueType1& value1 = *optional1;
StringMatchResultListener value_listener;
const bool match = value_matcher_.MatchAndExplain(
std::make_tuple(value1, value2), &value_listener);
*listener << (match ? "which match" : "whose values don't match");
PrintIfNotEmpty(value_listener.str(), listener->stream());
return match;
}
private:
const Matcher<ValuePair> value_matcher_;
GTEST_DISALLOW_ASSIGN_(PairImpl);
};
private:
const ValueMatcher value_matcher_;
GTEST_DISALLOW_ASSIGN_(OptionalMatcher);

35
googlemock/test/gmock-matchers_test.cc
View File

@ -6387,7 +6387,7 @@ class SampleOptional {
explicit SampleOptional(T value)
: value_(std::move(value)), has_value_(true) {}
SampleOptional() : value_(), has_value_(false) {}
operator bool() const { return has_value_; }
explicit operator bool() const { return has_value_; }
const T& operator*() const { return value_; }
private:
@ -6427,6 +6427,39 @@ TEST(OptionalTest, WorksWithMoveOnly) {
EXPECT_TRUE(m.Matches(SampleOptional<std::unique_ptr<int>>(nullptr)));
}
TEST(OptionalTest, TupleDescribesSelf) {
const Matcher<std::tuple<SampleOptional<int>, int>> m = Optional(Eq());
EXPECT_EQ("are optionals where the values are an equal pair", Describe(m));
}
TEST(OptionalTest, TupleExplainsSelf) {
const Matcher<std::tuple<SampleOptional<int>, int>> m = Optional(Eq());
EXPECT_EQ("which match",
Explain(m, std::make_tuple(SampleOptional<int>(1), 1)));
EXPECT_EQ("whose values don't match",
Explain(m, std::make_tuple(SampleOptional<int>(1), 2)));
}
TEST(OptionalTest, TupleMatchesNonEmpty) {
const Matcher<std::tuple<SampleOptional<int>, int>> m1 = Optional(Eq());
const Matcher<std::tuple<SampleOptional<int>, int>> m2 = Optional(Lt());
EXPECT_TRUE(m1.Matches(std::make_tuple(SampleOptional<int>(1), 1)));
EXPECT_FALSE(m1.Matches(std::make_tuple(SampleOptional<int>(1), 2)));
EXPECT_FALSE(m2.Matches(std::make_tuple(SampleOptional<int>(1), 1)));
EXPECT_TRUE(m2.Matches(std::make_tuple(SampleOptional<int>(1), 2)));
}
TEST(OptionalTest, TupleDoesNotMatchNullopt) {
const Matcher<std::tuple<SampleOptional<int>, int>> m1 = Optional(Eq());
EXPECT_FALSE(m1.Matches(std::make_tuple(SampleOptional<int>(), 1)));
}
TEST(OptionalTest, TupleWorksInPointwise) {
std::vector<SampleOptional<int>> v = {
SampleOptional<int>(1), SampleOptional<int>(2), SampleOptional<int>(3)};
EXPECT_THAT(v, Pointwise(Optional(Eq()), {1, 2, 3}));
}
class SampleVariantIntString {
public:
SampleVariantIntString(int i) : i_(i), has_int_(true) {}