absl::Now(): Mention the possibility of injecting an absl::Clock
to improve testability
PiperOrigin-RevId: 866593907
Change-Id: I952ce8c892e9e820863d9a65ddf635f7d56d8e99
diff --git a/absl/time/clock.h b/absl/time/clock.h
index 41d2cf2..2be89a2 100644
--- a/absl/time/clock.h
+++ b/absl/time/clock.h
@@ -34,6 +34,9 @@
// Now()
//
// Returns the current time, expressed as an `absl::Time` absolute time value.
+//
+// To improve testability, consider injecting an absl::Clock and using
+// absl::Clock::TimeNow() instead.
absl::Time Now();
// GetCurrentTimeNanos()
