Start trying to write tests for promql

model/textparse/openmetricsparse.go

@@ -465,7 +465,7 @@ func (p *OpenMetricsParser) parseMetricSuffix(t token) (Entry, error) {
 	if p.offsets[0] == -1 {
 		return EntryInvalid, fmt.Errorf("metric name not set while parsing: %q", p.l.b[p.start:p.l.i])
 	}
-	
+
 	var err error
 	p.val, err = p.getFloatValue(t, "metric")
 	if err != nil {
@@ -527,4 +527,4 @@ func (p *OpenMetricsParser) verifyMetricName(start, end int) error {
 		return fmt.Errorf("metric name %q is not valid", m)
 	}
 	return nil
-}
+}

promql/parser/parse_test.go

@@ -473,6 +473,23 @@ var testExpr = []struct {
 			StartPos: 1,
 		},
 	},
+	{
+		input: ` +{"some_metric"}`,
+		expected: &UnaryExpr{
+			Op: ADD,
+			Expr: &VectorSelector{
+				Name: "some_metric",
+				LabelMatchers: []*labels.Matcher{
+					MustLabelMatcher(labels.MatchEqual, model.MetricNameLabel, "some_metric"),
+				},
+				PosRange: posrange.PositionRange{
+					Start: 2,
+					End:   17,
+				},
+			},
+			StartPos: 1,
+		},
+	},
 	{
 		input:  "",
 		fail:   true,
@@ -1701,6 +1718,20 @@ var testExpr = []struct {
 			},
 		},
 	},
+	{
+		input: `{"foo", a="bc"}`,
+		expected: &VectorSelector{
+			Name: "foo:bar",
+			LabelMatchers: []*labels.Matcher{
+				MustLabelMatcher(labels.MatchEqual, model.MetricNameLabel, "foo"),
+				MustLabelMatcher(labels.MatchEqual, "a", "bc"),
+			},
+			PosRange: posrange.PositionRange{
+				Start: 0,
+				End:   15,
+			},
+		},
+	},
 	{
 		input: `foo{NaN='bc'}`,
 		expected: &VectorSelector{