Fix log file rotation test.

The test was looking for the wrong file name.
Since compression happens asyncronously, sometimes the test would
succeed and sometimes fail.

This change makes sure to wait for the compressed version of the file
since we can't know when the compression is going to occur.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
(cherry picked from commit c6d860ace6a856f3a89d89275453271456aec242)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: ec14dc44d13b7cca6f4ac85a094d4d54fe8afad6
Component: engine

Author: cpuguy83

components/engine/daemon/logger/loggerutils/logfile_test.go

@@ -231,11 +231,11 @@ func TestCheckCapacityAndRotate(t *testing.T) {
 	assert.Assert(t, os.IsNotExist(err), dirStringer{dir})
 
 	assert.NilError(t, l.WriteLogEntry(&logger.Message{Line: []byte("hello world!")}))
-	poll.WaitOn(t, checkFileExists(f.Name()+".1"), poll.WithTimeout(30*time.Second))
+	poll.WaitOn(t, checkFileExists(f.Name()+".1.gz"), poll.WithDelay(time.Millisecond), poll.WithTimeout(30*time.Second))
 
 	assert.NilError(t, l.WriteLogEntry(&logger.Message{Line: []byte("hello world!")}))
-	poll.WaitOn(t, checkFileExists(f.Name()+".1"), poll.WithTimeout(30*time.Second))
-	poll.WaitOn(t, checkFileExists(f.Name()+".2.gz"), poll.WithTimeout(30*time.Second))
+	poll.WaitOn(t, checkFileExists(f.Name()+".1.gz"), poll.WithDelay(time.Millisecond), poll.WithTimeout(30*time.Second))
+	poll.WaitOn(t, checkFileExists(f.Name()+".2.gz"), poll.WithDelay(time.Millisecond), poll.WithTimeout(30*time.Second))
 
 	// Now let's simulate a failed rotation where the file was able to be closed but something else happened elsewhere
 	// down the line.