.

go/internal/xtracing/tracetest/tracetest.go

@@ -212,9 +212,15 @@ func _NewChan(name string) _Chan {
 // _testing_TB is alias for testing.TB that is non-public when embedded into a struct.
 type _testing_TB = testing.TB
 
-// T is similar to testing.T and is passed by Verify to tested function.
+// T is similar to testing.T and represents tracetest test environment.
 //
-// See top-level package documentation for details.
+// It is passed by Verify and Run to tested function.
+//
+// Besides testing.TB it provides
+//
+//	.RxEvent	-- to where events should be synchronously delivered by the test
+//	.SetEventRouter	-- to tell T to which stream an event should go
+//	.Expect		-- to assert expectation of an event on a stream
 type T struct {
 	_testing_TB