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Replace pump'd Args() matcher with variadic templates.

PiperOrigin-RevId: 223794430
This commit is contained in:
Abseil Team
2018-12-03 10:48:03 -05:00
committed by Gennadiy Civil
parent 8fbf9d16a6
commit a42cdf2abd
5 changed files with 233 additions and 655 deletions
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152
googlemock/test/gmock-generated-matchers_test.cc
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@@ -112,154 +112,6 @@ std::string Explain(const MatcherType& m, const Value& x) {
return ss.str();
}
// Tests Args<k0, ..., kn>(m).
TEST(ArgsTest, AcceptsZeroTemplateArg) {
const std::tuple<int, bool> t(5, true);
EXPECT_THAT(t, Args<>(Eq(std::tuple<>())));
EXPECT_THAT(t, Not(Args<>(Ne(std::tuple<>()))));
}
TEST(ArgsTest, AcceptsOneTemplateArg) {
const std::tuple<int, bool> t(5, true);
EXPECT_THAT(t, Args<0>(Eq(std::make_tuple(5))));
EXPECT_THAT(t, Args<1>(Eq(std::make_tuple(true))));
EXPECT_THAT(t, Not(Args<1>(Eq(std::make_tuple(false)))));
}
TEST(ArgsTest, AcceptsTwoTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<0, 1>(Lt())));
EXPECT_THAT(t, (Args<1, 2>(Lt())));
EXPECT_THAT(t, Not(Args<0, 2>(Gt())));
}
TEST(ArgsTest, AcceptsRepeatedTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<0, 0>(Eq())));
EXPECT_THAT(t, Not(Args<1, 1>(Ne())));
}
TEST(ArgsTest, AcceptsDecreasingTemplateArgs) {
const std::tuple<short, int, long> t(4, 5, 6L); // NOLINT
EXPECT_THAT(t, (Args<2, 0>(Gt())));
EXPECT_THAT(t, Not(Args<2, 1>(Lt())));
}
// The MATCHER*() macros trigger warning C4100 (unreferenced formal
// parameter) in MSVC with -W4. Unfortunately they cannot be fixed in
// the macro definition, as the warnings are generated when the macro
// is expanded and macro expansion cannot contain #pragma. Therefore
// we suppress them here.
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
#endif
MATCHER(SumIsZero, "") {
return std::get<0>(arg) + std::get<1>(arg) + std::get<2>(arg) == 0;
}
TEST(ArgsTest, AcceptsMoreTemplateArgsThanArityOfOriginalTuple) {
EXPECT_THAT(std::make_tuple(-1, 2), (Args<0, 0, 1>(SumIsZero())));
EXPECT_THAT(std::make_tuple(1, 2), Not(Args<0, 0, 1>(SumIsZero())));
}
TEST(ArgsTest, CanBeNested) {
const std::tuple<short, int, long, int> t(4, 5, 6L, 6); // NOLINT
EXPECT_THAT(t, (Args<1, 2, 3>(Args<1, 2>(Eq()))));
EXPECT_THAT(t, (Args<0, 1, 3>(Args<0, 2>(Lt()))));
}
TEST(ArgsTest, CanMatchTupleByValue) {
typedef std::tuple<char, int, int> Tuple3;
const Matcher<Tuple3> m = Args<1, 2>(Lt());
EXPECT_TRUE(m.Matches(Tuple3('a', 1, 2)));
EXPECT_FALSE(m.Matches(Tuple3('b', 2, 2)));
}
TEST(ArgsTest, CanMatchTupleByReference) {
typedef std::tuple<char, char, int> Tuple3;
const Matcher<const Tuple3&> m = Args<0, 1>(Lt());
EXPECT_TRUE(m.Matches(Tuple3('a', 'b', 2)));
EXPECT_FALSE(m.Matches(Tuple3('b', 'b', 2)));
}
// Validates that arg is printed as str.
MATCHER_P(PrintsAs, str, "") {
return testing::PrintToString(arg) == str;
}
TEST(ArgsTest, AcceptsTenTemplateArgs) {
EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
PrintsAs("(9, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
EXPECT_THAT(std::make_tuple(0, 1L, 2, 3L, 4, 5, 6, 7, 8, 9),
Not(Args<9, 8, 7, 6, 5, 4, 3, 2, 1, 0>(
PrintsAs("(0, 8, 7, 6, 5, 4, 3, 2, 1, 0)"))));
}
TEST(ArgsTest, DescirbesSelfCorrectly) {
const Matcher<std::tuple<int, bool, char> > m = Args<2, 0>(Lt());
EXPECT_EQ("are a tuple whose fields (#2, #0) are a pair where "
"the first < the second",
Describe(m));
}
TEST(ArgsTest, DescirbesNestedArgsCorrectly) {
const Matcher<const std::tuple<int, bool, char, int>&> m =
Args<0, 2, 3>(Args<2, 0>(Lt()));
EXPECT_EQ("are a tuple whose fields (#0, #2, #3) are a tuple "
"whose fields (#2, #0) are a pair where the first < the second",
Describe(m));
}
TEST(ArgsTest, DescribesNegationCorrectly) {
const Matcher<std::tuple<int, char> > m = Args<1, 0>(Gt());
EXPECT_EQ("are a tuple whose fields (#1, #0) aren't a pair "
"where the first > the second",
DescribeNegation(m));
}
TEST(ArgsTest, ExplainsMatchResultWithoutInnerExplanation) {
const Matcher<std::tuple<bool, int, int> > m = Args<1, 2>(Eq());
EXPECT_EQ("whose fields (#1, #2) are (42, 42)",
Explain(m, std::make_tuple(false, 42, 42)));
EXPECT_EQ("whose fields (#1, #2) are (42, 43)",
Explain(m, std::make_tuple(false, 42, 43)));
}
// For testing Args<>'s explanation.
class LessThanMatcher : public MatcherInterface<std::tuple<char, int> > {
public:
virtual void DescribeTo(::std::ostream* os) const {}
virtual bool MatchAndExplain(std::tuple<char, int> value,
MatchResultListener* listener) const {
const int diff = std::get<0>(value) - std::get<1>(value);
if (diff > 0) {
*listener << "where the first value is " << diff
<< " more than the second";
}
return diff < 0;
}
};
Matcher<std::tuple<char, int> > LessThan() {
return MakeMatcher(new LessThanMatcher);
}
TEST(ArgsTest, ExplainsMatchResultWithInnerExplanation) {
const Matcher<std::tuple<char, int, int> > m = Args<0, 2>(LessThan());
EXPECT_EQ(
"whose fields (#0, #2) are ('a' (97, 0x61), 42), "
"where the first value is 55 more than the second",
Explain(m, std::make_tuple('a', 42, 42)));
EXPECT_EQ("whose fields (#0, #2) are ('\\0', 43)",
Explain(m, std::make_tuple('\0', 42, 43)));
}
// For testing ExplainMatchResultTo().
class GreaterThanMatcher : public MatcherInterface<int> {
public:
@@ -1288,10 +1140,6 @@ TEST(AnyOfTest, DoesNotCallAnyOfUnqualified) {
} // namespace adl_test
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#if GTEST_LANG_CXX11
TEST(AllOfTest, WorksOnMoveOnlyType) {