fixing issue of feature gate not being turned off properly

pkg/controller/volume/persistentvolume/binder_test.go

@@ -720,14 +720,9 @@ func TestSyncAlphaBlockVolume(t *testing.T) {
 		t.Errorf("Failed to enable feature gate for BlockVolume: %v", err)
 		return
 	}
+	defer utilfeature.DefaultFeatureGate.Set("BlockVolume=false")
 
 	runSyncTests(t, tests, []*storage.StorageClass{})
-
-	err1 := utilfeature.DefaultFeatureGate.Set("BlockVolume=false")
-	if err1 != nil {
-		t.Errorf("Failed to disable feature gate for BlockVolume: %v", err)
-		return
-	}
 }
 
 // Test multiple calls to syncClaim/syncVolume and periodic sync of all

pkg/controller/volume/persistentvolume/index_test.go

@@ -839,6 +839,8 @@ func TestAlphaVolumeModeCheck(t *testing.T) {
 		}
 	}
 
+	// make sure feature gate is turned off
+	toggleBlockVolumeFeature(false, t)
 }
 
 func TestAlphaFilteringVolumeModes(t *testing.T) {
@@ -933,6 +935,9 @@ func TestAlphaFilteringVolumeModes(t *testing.T) {
 			t.Errorf("Unexpected failure for scenario: %s - %+v", name, err)
 		}
 	}
+
+	// make sure feature gate is turned off
+	toggleBlockVolumeFeature(false, t)
 }
 
 func TestFindingPreboundVolumes(t *testing.T) {