diff options
Diffstat (limited to 'absl/strings/str_cat_test.cc')
| -rw-r--r-- | absl/strings/str_cat_test.cc | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/absl/strings/str_cat_test.cc b/absl/strings/str_cat_test.cc index 66eddf0d..b30a86fe 100644 --- a/absl/strings/str_cat_test.cc +++ b/absl/strings/str_cat_test.cc @@ -39,6 +39,24 @@ namespace { +template <typename Integer> +void VerifyInteger(Integer value) { + const std::string expected = std::to_string(value); + + EXPECT_EQ(absl::StrCat(value), expected); + + const char* short_prefix = "x"; + const char* long_prefix = "2;k.msabxiuow2[09i;o3k21-93-9=29]"; + + std::string short_str = short_prefix; + absl::StrAppend(&short_str, value); + EXPECT_EQ(short_str, short_prefix + expected); + + std::string long_str = long_prefix; + absl::StrAppend(&long_str, value); + EXPECT_EQ(long_str, long_prefix + expected); +} + // Test absl::StrCat of ints and longs of various sizes and signdedness. TEST(StrCat, Ints) { const short s = -1; // NOLINT(runtime/int) @@ -68,6 +86,34 @@ TEST(StrCat, Ints) { EXPECT_EQ(answer, "-9-12"); answer = absl::StrCat(uintptr, 0); EXPECT_EQ(answer, "130"); + + for (const uint32_t base : {2u, 10u}) { + for (const int extra_shift : {0, 12}) { + for (uint64_t i = 0; i < (1 << 8); ++i) { + uint64_t j = i; + while (true) { + uint64_t v = j ^ (extra_shift != 0 ? (j << extra_shift) * base : 0); + VerifyInteger(static_cast<bool>(v)); + VerifyInteger(static_cast<wchar_t>(v)); + VerifyInteger(static_cast<signed char>(v)); + VerifyInteger(static_cast<unsigned char>(v)); + VerifyInteger(static_cast<short>(v)); // NOLINT + VerifyInteger(static_cast<unsigned short>(v)); // NOLINT + VerifyInteger(static_cast<int>(v)); // NOLINT + VerifyInteger(static_cast<unsigned int>(v)); // NOLINT + VerifyInteger(static_cast<long>(v)); // NOLINT + VerifyInteger(static_cast<unsigned long>(v)); // NOLINT + VerifyInteger(static_cast<long long>(v)); // NOLINT + VerifyInteger(static_cast<unsigned long long>(v)); // NOLINT + const uint64_t next = j == 0 ? 1 : j * base; + if (next <= j) { + break; + } + j = next; + } + } + } + } } TEST(StrCat, Enums) { |