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Use overloaded operator<< for enums if available (#232)

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This commit is contained in:
vitaut
2015-11-24 08:18:19 -08:00
parent 1a2a333a1a
commit 6cff6d8137
3 changed files with 69 additions and 20 deletions
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12
test/format-test.cc
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@@ -1637,3 +1637,15 @@ TEST(LiteralsTest, NamedArg) {
udl_a_w);
}
#endif // FMT_USE_USER_DEFINED_LITERALS
enum TestEnum {};
std::ostream &operator<<(std::ostream &os, TestEnum) {
return os << "TestEnum";
}
enum TestEnum2 { A };
TEST(FormatTest, Enum) {
EXPECT_EQ("TestEnum", fmt::format("{}", TestEnum()));
EXPECT_EQ("0", fmt::format("{}", A));
}

14
test/util-test.cc
View File

@@ -870,15 +870,21 @@ TEST(UtilTest, ReportWindowsError) {
#endif // _WIN32
TEST(UtilTest, IsConvertibleToInt) {
EXPECT_TRUE(fmt::internal::IsConvertibleToInt<char>::value);
EXPECT_FALSE(fmt::internal::IsConvertibleToInt<const char *>::value);
enum TestEnum2 {};
enum TestEnum3 {};
std::ostream &operator<<(std::ostream &, TestEnum3);
TEST(UtilTest, ConvertToInt) {
EXPECT_TRUE(fmt::internal::ConvertToInt<char>::enable_conversion);
EXPECT_FALSE(fmt::internal::ConvertToInt<const char *>::enable_conversion);
EXPECT_TRUE(fmt::internal::ConvertToInt<TestEnum2>::value);
EXPECT_FALSE(fmt::internal::ConvertToInt<TestEnum3>::value);
}
#if FMT_USE_ENUM_BASE
enum TestEnum : char {TestValue};
TEST(UtilTest, IsEnumConvertibleToInt) {
EXPECT_TRUE(fmt::internal::IsConvertibleToInt<TestEnum>::value);
EXPECT_TRUE(fmt::internal::ConvertToInt<TestEnum>::enable_conversion);
}
#endif