mirror of
https://github.com/AdguardTeam/AdGuardDNS.git
synced 2025-02-20 11:23:36 +08:00
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package prometheus_test
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import (
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"net"
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"testing"
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"github.com/AdguardTeam/AdGuardDNS/internal/dnsserver"
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"github.com/AdguardTeam/golibs/testutil"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/stretchr/testify/require"
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)
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func TestMain(m *testing.M) {
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testutil.DiscardLogOutput(m)
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}
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// testNamespace is a test namespace for metrics.
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const testNamespace = "dns"
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// testReqDomain is the common request domain for tests.
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const testReqDomain = "request-domain.example"
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// testServerInfo is the common server information structure for tests.
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var testServerInfo = &dnsserver.ServerInfo{
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Name: "test_server",
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Addr: "127.0.0.1:80",
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Proto: dnsserver.ProtoDNS,
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}
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// testUDPAddr is the common UDP address for tests.
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var testUDPAddr = &net.UDPAddr{
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IP: net.IP{1, 2, 3, 4},
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Port: 53,
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}
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// requireMetrics accepts a list of metrics names and checks that
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// they exist in the prom registry.
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func requireMetrics(t testing.TB, args ...string) {
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t.Helper()
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mf, err := prometheus.DefaultGatherer.Gather()
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require.NoError(t, err)
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require.NotNil(t, mf)
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// Check that metrics were incremented. If they're present in the collection
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// return by Gatherer, it means that they were used.
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metricsToCheck := map[string]bool{}
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for _, m := range args {
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metricsToCheck[m] = true
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}
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// Delete from metricsToCheck if the metric was found.
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// metricsToCheck must be empty in the end.
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for _, m := range mf {
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delete(metricsToCheck, m.GetName())
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}
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require.Len(t, metricsToCheck, 0, "Some metrics weren't reported: %v", metricsToCheck)
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}
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