testFile.Close()
		defer testFile.Close()
		testLog := testFile.Name()
		rotatedLog := fmt.Sprintf("%s.%s", testLog, now.Format(timestampFormat))
		err = c.rotateLatestLog(ctx, "test-id", testLog)
		assert.Equal(t, test.expectError, err != nil)
		_, err = os.Stat(testLog)
		assert.Equal(t, test.expectOriginal, err == nil)
		_, err = os.Stat(rotatedLog)
		assert.Equal(t, test.expectRotated, err == nil)

		return
	}

	if err := c.rotateLog(ctx, id, path); err != nil {
		klog.ErrorS(err, "Failed to rotate log for container", "worker", worker, "containerID", id, "path", path, "currentSize", info.Size(), "maxSize", c.policy.MaxSize)
		return
	}
	return
}

func (c *containerLogManager) rotateLog(ctx context.Context, id, log string) error {
	// pattern is used to match all rotated files.