tests: make schedulerTestSuite stable (#8670)

ref #4399

Signed-off-by: lhy1024 <[email protected]>

tools/pd-ctl/tests/scheduler/scheduler_test.go

@@ -98,6 +98,14 @@ func (suite *schedulerTestSuite) TearDownTest() {
 	suite.env.Cleanup()
 }
 
+func (suite *schedulerTestSuite) checkDefaultSchedulers(re *require.Assertions, cmd *cobra.Command, pdAddr string) {
+	expected := make(map[string]bool)
+	for _, scheduler := range suite.defaultSchedulers {
+		expected[scheduler] = true
+	}
+	checkSchedulerCommand(re, cmd, pdAddr, nil, expected)
+}
+
 func (suite *schedulerTestSuite) TestScheduler() {
 	suite.env.RunTestBasedOnMode(suite.checkScheduler)
 }
@@ -152,18 +160,11 @@ func (suite *schedulerTestSuite) checkScheduler(cluster *pdTests.TestCluster) {
 	// note: because pdqsort is a unstable sort algorithm, set ApproximateSize for this region.
 	pdTests.MustPutRegion(re, cluster, 1, 1, []byte("a"), []byte("b"), core.SetApproximateSize(10))
 
-	// scheduler show command
-	expected := map[string]bool{
-		"balance-region-scheduler":     true,
-		"balance-leader-scheduler":     true,
-		"balance-hot-region-scheduler": true,
-		"evict-slow-store-scheduler":   true,
-	}
-	checkSchedulerCommand(re, cmd, pdAddr, nil, expected)
+	suite.checkDefaultSchedulers(re, cmd, pdAddr)
 
 	// scheduler delete command
 	args := []string{"-u", pdAddr, "scheduler", "remove", "balance-region-scheduler"}
-	expected = map[string]bool{
+	expected := map[string]bool{
 		"balance-leader-scheduler":     true,
 		"balance-hot-region-scheduler": true,
 		"evict-slow-store-scheduler":   true,
@@ -435,6 +436,8 @@ func (suite *schedulerTestSuite) checkSchedulerConfig(cluster *pdTests.TestClust
 	// note: because pdqsort is an unstable sort algorithm, set ApproximateSize for this region.
 	pdTests.MustPutRegion(re, cluster, 1, 1, []byte("a"), []byte("b"), core.SetApproximateSize(10))
 
+	suite.checkDefaultSchedulers(re, cmd, pdAddr)
+
 	// test evict-slow-store && evict-slow-trend schedulers config
 	evictSlownessSchedulers := []string{"evict-slow-store-scheduler", "evict-slow-trend-scheduler"}
 	for _, schedulerName := range evictSlownessSchedulers {
@@ -620,6 +623,9 @@ func (suite *schedulerTestSuite) checkHotRegionSchedulerConfig(cluster *pdTests.
 	}
 	// note: because pdqsort is an unstable sort algorithm, set ApproximateSize for this region.
 	pdTests.MustPutRegion(re, cluster, 1, 1, []byte("a"), []byte("b"), core.SetApproximateSize(10))
+
+	suite.checkDefaultSchedulers(re, cmd, pdAddr)
+
 	leaderServer := cluster.GetLeaderServer()
 	// test hot region config
 	expected1 := map[string]any{
@@ -799,6 +805,8 @@ func (suite *schedulerTestSuite) checkSchedulerDiagnostic(cluster *pdTests.TestC
 	// note: because pdqsort is an unstable sort algorithm, set ApproximateSize for this region.
 	pdTests.MustPutRegion(re, cluster, 1, 1, []byte("a"), []byte("b"), core.SetApproximateSize(10))
 
+	suite.checkDefaultSchedulers(re, cmd, pdAddr)
+
 	echo := mustExec(re, cmd, []string{"-u", pdAddr, "config", "set", "enable-diagnostic", "true"}, nil)
 	re.Contains(echo, "Success!")
 	checkSchedulerDescribeCommand("balance-region-scheduler", "pending", "1 store(s) RegionNotMatchRule; ")