chore(tests): fix timing issue in jitter tests (#2283)

Author: StarpTech

router/pkg/controlplane/poll_test.go

@@ -68,9 +68,11 @@ func Test_Poller(t *testing.T) {
 				i, actualInterval, expectedMinInterval)
 
 			// Each interval should be at most interval + maxJitter
-			assert.LessOrEqual(t, actualInterval, expectedMaxInterval,
+			// a small delay to account for system scheduling delays
+			expectedInterval := expectedMaxInterval + 10*time.Millisecond
+			assert.LessOrEqual(t, actualInterval, expectedInterval,
 				"execution %d: actual interval %v should be <= maximum interval %v",
-				i, actualInterval, expectedMaxInterval)
+				i, actualInterval, expectedInterval)
 
 			t.Logf("execution %d: interval = %v (expected: %v to %v)",
 				i, actualInterval, expectedMinInterval, expectedMaxInterval)