diff options
Diffstat (limited to 'absl/time/duration_test.cc')
| -rw-r--r-- | absl/time/duration_test.cc | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/absl/time/duration_test.cc b/absl/time/duration_test.cc index 775da91e..61f3c5c0 100644 --- a/absl/time/duration_test.cc +++ b/absl/time/duration_test.cc @@ -803,6 +803,40 @@ TEST(Duration, DivisionByZero) { EXPECT_EQ(-dbl_inf, absl::FDivDuration(-any_dur, zero)); } +TEST(Duration, NaN) { + // Note that IEEE 754 does not define the behavior of a nan's sign when it is + // copied, so the code below allows for either + or - InfiniteDuration. +#define TEST_NAN_HANDLING(NAME, NAN) \ + do { \ + const auto inf = absl::InfiniteDuration(); \ + auto x = NAME(NAN); \ + EXPECT_TRUE(x == inf || x == -inf); \ + auto y = NAME(42); \ + y *= NAN; \ + EXPECT_TRUE(y == inf || y == -inf); \ + auto z = NAME(42); \ + z /= NAN; \ + EXPECT_TRUE(z == inf || z == -inf); \ + } while (0) + + const double nan = std::numeric_limits<double>::quiet_NaN(); + TEST_NAN_HANDLING(absl::Nanoseconds, nan); + TEST_NAN_HANDLING(absl::Microseconds, nan); + TEST_NAN_HANDLING(absl::Milliseconds, nan); + TEST_NAN_HANDLING(absl::Seconds, nan); + TEST_NAN_HANDLING(absl::Minutes, nan); + TEST_NAN_HANDLING(absl::Hours, nan); + + TEST_NAN_HANDLING(absl::Nanoseconds, -nan); + TEST_NAN_HANDLING(absl::Microseconds, -nan); + TEST_NAN_HANDLING(absl::Milliseconds, -nan); + TEST_NAN_HANDLING(absl::Seconds, -nan); + TEST_NAN_HANDLING(absl::Minutes, -nan); + TEST_NAN_HANDLING(absl::Hours, -nan); + +#undef TEST_NAN_HANDLING +} + TEST(Duration, Range) { const absl::Duration range = ApproxYears(100 * 1e9); const absl::Duration range_future = range; |