Add test for PromQL braces when parsing lists of matchers (#3507)

* Add test for PromQL braces when parsing lists of matchers

Signed-off-by: George Robinson <george.robinson@grafana.com>

* Use acceptance tests

Signed-off-by: George Robinson <george.robinson@grafana.com>

* Add test creating silence with braces

Signed-off-by: George Robinson <george.robinson@grafana.com>

---------

Signed-off-by: George Robinson <george.robinson@grafana.com>

test/cli/acceptance.go

@@ -490,9 +490,10 @@ func (am *Alertmanager) addAlertCommand(alert *TestAlert) ([]byte, error) {
 }
 
 // QueryAlerts uses the amtool cli to query alerts.
-func (am *Alertmanager) QueryAlerts() ([]TestAlert, error) {
+func (am *Alertmanager) QueryAlerts(match ...string) ([]TestAlert, error) {
 	amURLFlag := "--alertmanager.url=" + am.getURL("/")
-	cmd := exec.Command(amtool, amURLFlag, "alert", "query")
+	args := append([]string{amURLFlag, "alert", "query"}, match...)
+	cmd := exec.Command(amtool, args...)
 	output, err := cmd.CombinedOutput()
 	if err != nil {
 		return nil, err
@@ -558,9 +559,9 @@ func (am *Alertmanager) addSilenceCommand(sil *TestSilence) ([]byte, error) {
 }
 
 // QuerySilence queries the current silences using the 'amtool silence query' command.
-func (am *Alertmanager) QuerySilence() ([]TestSilence, error) {
+func (am *Alertmanager) QuerySilence(match ...string) ([]TestSilence, error) {
 	amURLFlag := "--alertmanager.url=" + am.getURL("/")
-	args := []string{amURLFlag, "silence", "query"}
+	args := append([]string{amURLFlag, "silence", "query"}, match...)
 	cmd := exec.Command(amtool, args...)
 	out, err := cmd.CombinedOutput()
 	if err != nil {

test/cli/acceptance/cli_test.go

@@ -21,6 +21,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
+	"github.com/prometheus/alertmanager/api/v2/models"
 	. "github.com/prometheus/alertmanager/test/cli"
 )
 
@@ -114,13 +115,26 @@ receivers:
 	am.AddAlerts(alert1, alert2)
 
 	alerts, err := am.QueryAlerts()
-	if err != nil {
-		t.Fatal("Failed to query alerts", err)
-	}
-	expectedAlerts := 2
-	if len(alerts) != expectedAlerts {
-		t.Fatalf("Incorrect number of alerts, expected %v, got %v", expectedAlerts, len(alerts))
-	}
+	require.NoError(t, err)
+	require.Len(t, alerts, 2)
+
+	// Get the first alert using the alertname heuristic
+	alerts, err = am.QueryAlerts("test1")
+	require.NoError(t, err)
+	require.Len(t, alerts, 1)
+
+	// QueryAlerts uses the simple output option, which means just the alertname
+	// label is printed. We can assert that querying works as expected as we know
+	// there are two alerts called "test1" and "test2".
+	expectedLabels := models.LabelSet{"name": "test1"}
+	require.True(t, alerts[0].HasLabels(expectedLabels))
+
+	// Get the second alert
+	alerts, err = am.QueryAlerts("alertname=test2")
+	require.NoError(t, err)
+	require.Len(t, alerts, 1)
+	expectedLabels = models.LabelSet{"name": "test2"}
+	require.True(t, alerts[0].HasLabels(expectedLabels))
 }
 
 func TestQuerySilence(t *testing.T) {
@@ -153,20 +167,30 @@ receivers:
 
 	am := amc.Members()[0]
 
-	silence1 := Silence(0, 4).Match("alertname=test1", "severity=warn").Comment("test1")
-	silence2 := Silence(0, 4).Match("foo").Comment("test foo")
+	silence1 := Silence(0, 4).Match("test1", "severity=warn").Comment("test1")
+	silence2 := Silence(0, 4).Match("alertname=test2", "severity=warn").Comment("test2")
+	silence3 := Silence(0, 4).Match("{alertname=test3}", "severity=warn").Comment("test3")
 
 	am.SetSilence(0, silence1)
 	am.SetSilence(0, silence2)
+	am.SetSilence(0, silence3)
 
+	// Get all silences
 	sils, err := am.QuerySilence()
-	if err != nil {
-		t.Error("Failed to query silences: ", err)
-	}
-	expectedSils := 2
-	if len(sils) != expectedSils {
-		t.Errorf("Incorrect number of silences queried, expected: %v, actual: %v", expectedSils, len(sils))
-	}
+	require.NoError(t, err)
+	require.Len(t, sils, 3)
+	expected1 := []string{"alertname=\"test1\"", "severity=\"warn\""}
+	require.Equal(t, expected1, sils[0].GetMatches())
+	expected2 := []string{"alertname=\"test2\"", "severity=\"warn\""}
+	require.Equal(t, expected2, sils[1].GetMatches())
+	expected3 := []string{"alertname=\"{alertname=test3}\"", "severity=\"warn\""}
+	require.Equal(t, expected3, sils[2].GetMatches())
+
+	// Get the first silence using the alertname heuristic
+	sils, err = am.QuerySilence("test1")
+	require.NoError(t, err)
+	require.Len(t, sils, 1)
+	require.Equal(t, expected1, sils[0].GetMatches())
 }
 
 func TestRoutesShow(t *testing.T) {

test/cli/mock.go

@@ -76,7 +76,12 @@ func (s *TestSilence) Match(v ...string) *TestSilence {
 	return s
 }
 
-// MatchRE adds a new regex matcher to the silence
+// GetMatches returns the plain matchers for the silence.
+func (s TestSilence) GetMatches() []string {
+	return s.match
+}
+
+// MatchRE adds a new regex matcher to the silence.
 func (s *TestSilence) MatchRE(v ...string) *TestSilence {
 	if len(v)%2 == 1 {
 		panic("bad key/values")
@@ -85,6 +90,11 @@ func (s *TestSilence) MatchRE(v ...string) *TestSilence {
 	return s
 }
 
+// GetMatchREs returns the regex matchers for the silence.
+func (s *TestSilence) GetMatchREs() []string {
+	return s.matchRE
+}
+
 // Comment sets the comment to the silence.
 func (s *TestSilence) Comment(c string) *TestSilence {
 	s.comment = c
@@ -185,6 +195,11 @@ func (a *TestAlert) Active(tss ...float64) *TestAlert {
 	return a
 }
 
+// HasLabels returns true if the two label sets are equivalent, otherwise false.
+func (a *TestAlert) HasLabels(labels models.LabelSet) bool {
+	return reflect.DeepEqual(a.labels, labels)
+}
+
 func equalAlerts(a, b *models.GettableAlert, opts *AcceptanceOpts) bool {
 	if !reflect.DeepEqual(a.Labels, b.Labels) {
 		return false