Revert "use require.InEpsilonf"

This reverts commit 96bf2ea.
pingcap · Oct 5, 2021 · b39f8d0 · b39f8d0
1 parent 96bf2ea
commit b39f8d0
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/statistics/sample_test.go b/statistics/sample_test.go
@@ -93,8 +93,11 @@ func SubTestWeightedSampling() func(*testing.T) {
 			require.Nil(t, rs.Close())
 		}
 		expFrequency := float64(sampleNum) * float64(loopCnt) / float64(rowNum)
+		delta := 0.5
 		for _, cnt := range itemCnt {
-			require.InEpsilonf(t, expFrequency, float64(cnt), 0.5, "The frequency %v is exceed the Chernoff Bound", cnt)
+			if float64(cnt) < expFrequency/(1+delta) || float64(cnt) > expFrequency*(1+delta) {
+				require.Truef(t, false, "The frequency %v is exceed the Chernoff Bound", cnt)
+			}
 		}
 	}
 }
@@ -136,8 +139,11 @@ func SubTestDistributedWeightedSampling() func(*testing.T) {
 			}
 		}
 		expFrequency := float64(sampleNum) * float64(loopCnt) / float64(rowNum)
+		delta := 0.5
 		for _, cnt := range itemCnt {
-			require.InEpsilonf(t, expFrequency, float64(cnt), 0.5, "The frequency %v is exceed the Chernoff Bound", cnt)
+			if float64(cnt) < expFrequency/(1+delta) || float64(cnt) > expFrequency*(1+delta) {
+				require.Truef(t, false, "the frequency %v is exceed the Chernoff Bound", cnt)
+			}
 		}
 	}
 }