prometheus/storage/remote/codec_test.go

package remote

import (
	"testing"

	"github.com/prometheus/prometheus/pkg/labels"
	"github.com/prometheus/prometheus/prompb"
	"github.com/prometheus/prometheus/storage"
)

func TestValidateLabelsAndMetricName(t *testing.T) {
	tests := []struct {
		input       labels.Labels
		expectedErr string
		shouldPass  bool
	}{
		{
			input: labels.FromStrings(
				"__name__", "name",
				"labelName", "labelValue",
			),
			expectedErr: "",
			shouldPass:  true,
		},
		{
			input: labels.FromStrings(
				"__name__", "name",
				"_labelName", "labelValue",
			),
			expectedErr: "",
			shouldPass:  true,
		},
		{
			input: labels.FromStrings(
				"__name__", "name",
				"@labelName", "labelValue",
			),
			expectedErr: "Invalid label name: @labelName",
			shouldPass:  false,
		},
		{
			input: labels.FromStrings(
				"__name__", "name",
				"123labelName", "labelValue",
			),
			expectedErr: "Invalid label name: 123labelName",
			shouldPass:  false,
		},
		{
			input: labels.FromStrings(
				"__name__", "name",
				"", "labelValue",
			),
			expectedErr: "Invalid label name: ",
			shouldPass:  false,
		},
		{
			input: labels.FromStrings(
				"__name__", "name",
				"labelName", string([]byte{0xff}),
			),
			expectedErr: "Invalid label value: " + string([]byte{0xff}),
			shouldPass:  false,
		},
		{
			input: labels.FromStrings(
				"__name__", "@invalid_name",
			),
			expectedErr: "Invalid metric name: @invalid_name",
			shouldPass:  false,
		},
	}

	for _, test := range tests {
		err := validateLabelsAndMetricName(test.input)
		if test.shouldPass != (err == nil) {
			if test.shouldPass {
				t.Fatalf("Test should pass, got unexpected error: %v", err)
			} else {
				t.Fatalf("Test should fail, unexpected error, got: %v, expected: %v", err, test.expectedErr)
			}
		}
	}
}

func TestConcreteSeriesSet(t *testing.T) {
	series1 := &concreteSeries{
		labels:  labels.FromStrings("foo", "bar"),
		samples: []*prompb.Sample{&prompb.Sample{Value: 1, Timestamp: 2}},
	}
	series2 := &concreteSeries{
		labels:  labels.FromStrings("foo", "baz"),
		samples: []*prompb.Sample{&prompb.Sample{Value: 3, Timestamp: 4}},
	}
	c := &concreteSeriesSet{
		series: []storage.Series{series1, series2},
	}
	if !c.Next() {
		t.Fatalf("Expected Next() to be true.")
	}
	if c.At() != series1 {
		t.Fatalf("Unexpected series returned.")
	}
	if !c.Next() {
		t.Fatalf("Expected Next() to be true.")
	}
	if c.At() != series2 {
		t.Fatalf("Unexpected series returned.")
	}
	if c.Next() {
		t.Fatalf("Expected Next() to be false.")
	}
}