Golang Tester.Errorf方法代码示例

func testLabelValues(t test.Tester) {
	var scenarios = []struct {
		in  LabelValues
		out LabelValues
	}{
		{
			in:  LabelValues{"ZZZ", "zzz"},
			out: LabelValues{"ZZZ", "zzz"},
		},
		{
			in:  LabelValues{"aaa", "AAA"},
			out: LabelValues{"AAA", "aaa"},
		},
	}

	for i, scenario := range scenarios {
		sort.Sort(scenario.in)

		for j, expected := range scenario.out {
			if expected != scenario.in[j] {
				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
			}
		}
	}
}

func testLabelPairs(t test.Tester) {
	var scenarios = []struct {
		in  LabelPairs
		out LabelPairs
	}{
		{
			in: LabelPairs{
				{
					Name:  "AAA",
					Value: "aaa",
				},
			},
			out: LabelPairs{
				{
					Name:  "AAA",
					Value: "aaa",
				},
			},
		},
		{
			in: LabelPairs{
				{
					Name:  "aaa",
					Value: "aaa",
				},
				{
					Name:  "ZZZ",
					Value: "aaa",
				},
			},
			out: LabelPairs{
				{
					Name:  "ZZZ",
					Value: "aaa",
				},
				{
					Name:  "aaa",
					Value: "aaa",
				},
			},
		},
	}

	for i, scenario := range scenarios {
		sort.Sort(scenario.in)

		for j, expected := range scenario.out {
			if !expected.Equal(scenario.in[j]) {
				t.Errorf("%d.%d expected %s, got %s", i, j, expected, scenario.in[j])
			}
		}
	}
}

func buildLevelDBTestPersistencesMaker(name string, t test.Tester) func() (MetricPersistence, test.Closer) {
	return func() (MetricPersistence, test.Closer) {
		temporaryDirectory := test.NewTemporaryDirectory("get_value_at_time", t)

		p, err := NewLevelDBMetricPersistence(temporaryDirectory.Path())
		if err != nil {
			t.Errorf("Could not start up LevelDB: %q\n", err)
		}

		return p, temporaryDirectory
	}
}

func ReadEmptyTests(p MetricPersistence, t test.Tester) {
	hasLabelPair := func(x int) (success bool) {
		name := model.LabelName(string(x))
		value := model.LabelValue(string(x))

		labelSet := model.LabelSet{
			name: value,
		}

		fingerprints, err := p.GetFingerprintsForLabelSet(labelSet)
		if err != nil {
			t.Error(err)
			return
		}

		success = len(fingerprints) == 0
		if !success {
			t.Errorf("unexpected fingerprint length %d, got %d", 0, len(fingerprints))
		}

		return
	}

	err := quick.Check(hasLabelPair, nil)
	if err != nil {
		t.Error(err)
		return
	}

	hasLabelName := func(x int) (success bool) {
		labelName := model.LabelName(string(x))

		fingerprints, err := p.GetFingerprintsForLabelName(labelName)
		if err != nil {
			t.Error(err)
			return
		}

		success = len(fingerprints) == 0
		if !success {
			t.Errorf("unexpected fingerprint length %d, got %d", 0, len(fingerprints))
		}

		return
	}

	err = quick.Check(hasLabelName, nil)
	if err != nil {
		t.Error(err)
		return
	}
}

func AppendSampleAsSparseAppendWithReadsTests(p metric.Persistence, t test.Tester) {
	appendSample := func(x int) (success bool) {
		v := clientmodel.SampleValue(x)
		ts := clientmodel.TimestampFromUnix(int64(x))
		labelName := clientmodel.LabelName(x)
		labelValue := clientmodel.LabelValue(x)
		l := clientmodel.Metric{labelName: labelValue}

		sample := &clientmodel.Sample{
			Value:     v,
			Timestamp: ts,
			Metric:    l,
		}

		err := p.AppendSamples(clientmodel.Samples{sample})
		if err != nil {
			t.Error(err)
			return
		}

		values, err := p.GetLabelValuesForLabelName(labelName)
		if err != nil {
			t.Error(err)
			return
		}
		if len(values) != 1 {
			t.Errorf("expected label values count of %d, got %d", 1, len(values))
			return
		}

		fingerprints, err := p.GetFingerprintsForLabelMatchers(metric.LabelMatchers{{
			Type:  metric.Equal,
			Name:  labelName,
			Value: labelValue,
		}})
		if err != nil {
			t.Error(err)
			return
		}
		if len(fingerprints) != 1 {
			t.Errorf("expected fingerprint count of %d, got %d", 1, len(fingerprints))
			return
		}

		return true
	}

	if err := quick.Check(appendSample, nil); err != nil {
		t.Error(err)
	}
}

func testLevelDBStochastic(t test.Tester) {
	persistenceMaker := func() (MetricPersistence, test.Closer) {
		temporaryDirectory := test.NewTemporaryDirectory("test_leveldb_stochastic", t)

		p, err := NewLevelDBMetricPersistence(temporaryDirectory.Path())
		if err != nil {
			t.Errorf("Could not start up LevelDB: %q\n", err)
		}

		return p, temporaryDirectory
	}

	StochasticTests(persistenceMaker, t)
}

func AppendSampleAsSparseAppendWithReadsTests(p MetricPersistence, t test.Tester) {
	appendSample := func(x int) (success bool) {
		v := model.SampleValue(x)
		ts := time.Unix(int64(x), int64(x))
		labelName := model.LabelName(x)
		labelValue := model.LabelValue(x)
		l := model.Metric{labelName: labelValue}

		sample := model.Sample{
			Value:     v,
			Timestamp: ts,
			Metric:    l,
		}

		err := p.AppendSample(sample)
		if err != nil {
			t.Error(err)
			return
		}

		fingerprints, err := p.GetFingerprintsForLabelName(labelName)
		if err != nil {
			t.Error(err)
			return
		}
		if len(fingerprints) != 1 {
			t.Errorf("expected fingerprint count of %d, got %d", 1, len(fingerprints))
			return
		}

		fingerprints, err = p.GetFingerprintsForLabelSet(model.LabelSet{
			labelName: labelValue,
		})
		if err != nil {
			t.Error(err)
			return
		}
		if len(fingerprints) != 1 {
			t.Errorf("expected fingerprint count of %d, got %d", 1, len(fingerprints))
			return
		}

		return true
	}

	if err := quick.Check(appendSample, nil); err != nil {
		t.Error(err)
	}
}

func ReadEmptyTests(p metric.Persistence, t test.Tester) {
	hasLabelPair := func(x int) (success bool) {
		fingerprints, err := p.GetFingerprintsForLabelMatchers(metric.LabelMatchers{{
			Type:  metric.Equal,
			Name:  clientmodel.LabelName(string(x)),
			Value: clientmodel.LabelValue(string(x)),
		}})
		if err != nil {
			t.Error(err)
			return
		}

		success = len(fingerprints) == 0
		if !success {
			t.Errorf("unexpected fingerprint length %d, got %d", 0, len(fingerprints))
		}

		return
	}

	err := quick.Check(hasLabelPair, nil)
	if err != nil {
		t.Error(err)
		return
	}

	hasLabelName := func(x int) (success bool) {
		labelName := clientmodel.LabelName(string(x))

		values, err := p.GetLabelValuesForLabelName(labelName)
		if err != nil {
			t.Error(err)
			return
		}

		success = len(values) == 0
		if !success {
			t.Errorf("unexpected values length %d, got %d", 0, len(values))
		}

		return
	}

	err = quick.Check(hasLabelName, nil)
	if err != nil {
		t.Error(err)
		return
	}
}

func testMetric(t test.Tester) {
	var scenarios = []struct {
		input  map[string]string
		hash   uint64
		rowkey string
	}{
		{
			input:  map[string]string{},
			rowkey: "02676020557754725067--0-",
			hash:   2676020557754725067,
		},
		{
			input: map[string]string{
				"first_name":   "electro",
				"occupation":   "robot",
				"manufacturer": "westinghouse",
			},
			rowkey: "04776841610193542734-f-56-t",
			hash:   4776841610193542734,
		},
		{
			input: map[string]string{
				"x": "y",
			},
			rowkey: "01306929544689993150-x-2-y",
			hash:   1306929544689993150,
		},
	}

	for i, scenario := range scenarios {
		metric := Metric{}
		for key, value := range scenario.input {
			metric[LabelName(key)] = LabelValue(value)
		}

		expectedRowKey := scenario.rowkey
		expectedHash := scenario.hash
		fingerprint := NewFingerprintFromMetric(metric)
		actualRowKey := fingerprint.ToRowKey()
		actualHash := fingerprint.Hash()

		if expectedRowKey != actualRowKey {
			t.Errorf("%d. expected %s, got %s", i, expectedRowKey, actualRowKey)
		}
		if actualHash != expectedHash {
			t.Errorf("%d. expected %d, got %d", i, expectedHash, actualHash)
		}
	}
}

func GetFingerprintsForLabelSetUsesAndForLabelMatchingTests(p metric.Persistence, t test.Tester) {
	metrics := []clientmodel.LabelSet{
		{clientmodel.MetricNameLabel: "request_metrics_latency_equal_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
		{clientmodel.MetricNameLabel: "requests_metrics_latency_equal_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
		{clientmodel.MetricNameLabel: "requests_metrics_latency_logarithmic_accumulating_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
		{clientmodel.MetricNameLabel: "requests_metrics_latency_logarithmic_tallying_microseconds", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
		{clientmodel.MetricNameLabel: "targets_healthy_scrape_latency_ms", "instance": "http://localhost:9090/metrics.json", "percentile": "0.010000"},
	}

	for _, metric := range metrics {
		m := clientmodel.Metric{}

		for k, v := range metric {
			m[clientmodel.LabelName(k)] = clientmodel.LabelValue(v)
		}

		testAppendSamples(p, &clientmodel.Sample{
			Value:     clientmodel.SampleValue(0.0),
			Timestamp: clientmodel.Now(),
			Metric:    m,
		}, t)
	}

	labelSet := clientmodel.LabelSet{
		clientmodel.MetricNameLabel: "targets_healthy_scrape_latency_ms",
		"percentile":                "0.010000",
	}

	fingerprints, err := p.GetFingerprintsForLabelMatchers(labelMatchersFromLabelSet(labelSet))
	if err != nil {
		t.Errorf("could not get labels: %s", err)
	}

	if len(fingerprints) != 1 {
		t.Errorf("did not get a single metric as is expected, got %s", fingerprints)
	}
}

func GetFingerprintsForLabelSetTests(p MetricPersistence, t test.Tester) {
	testAppendSample(p, model.Sample{
		Value:     0,
		Timestamp: time.Time{},
		Metric: model.Metric{
			model.MetricNameLabel: "my_metric",
			"request_type":        "your_mom",
		},
	}, t)

	testAppendSample(p, model.Sample{
		Value:     0,
		Timestamp: time.Time{},
		Metric: model.Metric{
			model.MetricNameLabel: "my_metric",
			"request_type":        "your_dad",
		},
	}, t)

	result, err := p.GetFingerprintsForLabelSet(model.LabelSet{
		model.MetricNameLabel: model.LabelValue("my_metric"),
	})

	if err != nil {
		t.Error(err)
	}

	if len(result) != 2 {
		t.Errorf("Expected two elements.")
	}

	result, err = p.GetFingerprintsForLabelSet(model.LabelSet{
		model.LabelName("request_type"): model.LabelValue("your_mom"),
	})

	if err != nil {
		t.Error(err)
	}

	if len(result) != 1 {
		t.Errorf("Expected one element.")
	}

	result, err = p.GetFingerprintsForLabelSet(model.LabelSet{
		model.LabelName("request_type"): model.LabelValue("your_dad"),
	})

	if err != nil {
		t.Error(err)
	}

	if len(result) != 1 {
		t.Errorf("Expected one element.")
	}
}

func testDiscriminatorHttpHeader(t test.Tester) {
	var scenarios = []struct {
		input  map[string]string
		output Processor
		err    error
	}{
		{
			output: nil,
			err:    fmt.Errorf("Received illegal and nil header."),
		},
		{
			input:  map[string]string{"X-Prometheus-API-Version": "0.0.0"},
			output: nil,
			err:    fmt.Errorf("Unrecognized API version 0.0.0"),
		},
		{
			input:  map[string]string{"X-Prometheus-API-Version": "0.0.1"},
			output: Processor001,
			err:    nil,
		},
	}

	for i, scenario := range scenarios {
		var header http.Header

		if len(scenario.input) > 0 {
			header = http.Header{}
		}

		for key, value := range scenario.input {
			header.Add(key, value)
		}

		actual, err := DefaultRegistry.ProcessorForRequestHeader(header)

		if scenario.err != err {
			if scenario.err != nil && err != nil {
				if scenario.err.Error() != err.Error() {
					t.Errorf("%d. expected %s, got %s", i, scenario.err, err)
				}
			} else if scenario.err != nil || err != nil {
				t.Errorf("%d. expected %s, got %s", i, scenario.err, err)
			}
		}

		if scenario.output != actual {
			t.Errorf("%d. expected %s, got %s", i, scenario.output, actual)
		}
	}
}

func testTargetPool(t test.Tester) {
	type expectation struct {
		size int
	}

	type input struct {
		address      string
		scheduledFor time.Time
	}

	type output struct {
		address string
	}

	var scenarios = []struct {
		name    string
		inputs  []input
		outputs []output
	}{
		{
			name:    "empty",
			inputs:  []input{},
			outputs: []output{},
		},
		{
			name: "single element",
			inputs: []input{
				{
					address: "http://single.com",
				},
			},
			outputs: []output{
				{
					address: "http://single.com",
				},
			},
		},
		{
			name: "plural descending schedules",
			inputs: []input{
				{
					address:      "http://plural-descending.com",
					scheduledFor: time.Date(2013, 1, 4, 12, 0, 0, 0, time.UTC),
				},
				{
					address:      "http://plural-descending.net",
					scheduledFor: time.Date(2013, 1, 4, 11, 0, 0, 0, time.UTC),
				},
			},
			outputs: []output{
				{
					address: "http://plural-descending.net",
				},
				{
					address: "http://plural-descending.com",
				},
			},
		},
		{
			name: "plural ascending schedules",
			inputs: []input{
				{
					address:      "http://plural-ascending.net",
					scheduledFor: time.Date(2013, 1, 4, 11, 0, 0, 0, time.UTC),
				},
				{
					address:      "http://plural-ascending.com",
					scheduledFor: time.Date(2013, 1, 4, 12, 0, 0, 0, time.UTC),
				},
			},
			outputs: []output{
				{
					address: "http://plural-ascending.net",
				},
				{
					address: "http://plural-ascending.com",
				},
			},
		},
	}

	for i, scenario := range scenarios {
		pool := TargetPool{}

		for _, input := range scenario.inputs {
			target := target{
				address:   input.address,
				scheduler: literalScheduler(input.scheduledFor),
			}

			pool.addTarget(&target)
		}
		sort.Sort(pool)

		if pool.Len() != len(scenario.outputs) {
			t.Errorf("%s %d. expected TargetPool size to be %d but was %d", scenario.name, i, len(scenario.outputs), pool.Len())
		} else {
			for j, output := range scenario.outputs {
				target := pool.targets[j]

//.........这里部分代码省略.........

func GetMetricForFingerprintTests(p metric.Persistence, t test.Tester) {
	testAppendSamples(p, &clientmodel.Sample{
		Value:     0,
		Timestamp: 0,
		Metric: clientmodel.Metric{
			"request_type": "your_mom",
		},
	}, t)

	testAppendSamples(p, &clientmodel.Sample{
		Value:     0,
		Timestamp: 0,
		Metric: clientmodel.Metric{
			"request_type": "your_dad",
			"one-off":      "value",
		},
	}, t)

	result, err := p.GetFingerprintsForLabelMatchers(metric.LabelMatchers{{
		Type:  metric.Equal,
		Name:  "request_type",
		Value: "your_mom",
	}})

	if err != nil {
		t.Error(err)
	}

	if len(result) != 1 {
		t.Errorf("Expected one element.")
	}

	m, err := p.GetMetricForFingerprint(result[0])
	if err != nil {
		t.Error(err)
	}

	if m == nil {
		t.Fatal("Did not expect nil.")
	}

	if len(m) != 1 {
		t.Errorf("Expected one-dimensional metric.")
	}

	if m["request_type"] != "your_mom" {
		t.Errorf("Expected metric to match.")
	}

	result, err = p.GetFingerprintsForLabelMatchers(metric.LabelMatchers{{
		Type:  metric.Equal,
		Name:  "request_type",
		Value: "your_dad",
	}})

	if err != nil {
		t.Error(err)
	}

	if len(result) != 1 {
		t.Errorf("Expected one element.")
	}

	m, err = p.GetMetricForFingerprint(result[0])

	if m == nil {
		t.Fatal("Did not expect nil.")
	}

	if err != nil {
		t.Error(err)
	}

	if len(m) != 2 {
		t.Errorf("Expected two-dimensional metric.")
	}

	if m["request_type"] != "your_dad" {
		t.Errorf("Expected metric to match.")
	}

	if m["one-off"] != "value" {
		t.Errorf("Expected metric to match.")
	}

	// Verify that mutating a returned metric does not result in the mutated
	// metric to be returned at the next GetMetricForFingerprint() call.
	m["one-off"] = "new value"
	m, err = p.GetMetricForFingerprint(result[0])

	if m == nil {
		t.Fatal("Did not expect nil.")
	}

	if err != nil {
		t.Error(err)
	}

	if len(m) != 2 {
		t.Errorf("Expected two-dimensional metric.")
//.........这里部分代码省略.........

//.........这里部分代码省略.........
						fingerprint: "1111-a-4-a",
						time:        clientmodel.TimestampFromUnix(100),
					},
					{
						fingerprint: "1111-a-4-a",
						time:        clientmodel.TimestampFromUnix(200),
					},
					{
						fingerprint: "0-a-4-a",
						time:        clientmodel.TimestampFromUnix(100),
					},
					{
						fingerprint: "0-a-4-a",
						time:        clientmodel.TimestampFromUnix(0),
					},
				},
			},
			out: out{
				{
					fingerprint: "00000000000000000000-a-4-a",
				},
				{
					fingerprint: "00000000000000000000-a-4-a",
				},
				{
					fingerprint: "00000000000000001111-a-4-a",
				},
				{
					fingerprint: "00000000000000001111-a-4-a",
				},
			},
		},
		// Ensure grouping of operations
		{
			in: in{
				atTimes: []atTime{
					{
						fingerprint: "1111-a-4-a",
						time:        clientmodel.TimestampFromUnix(100),
					},
				},
				atRanges: []atRange{
					{
						fingerprint: "1111-a-4-a",
						from:        clientmodel.TimestampFromUnix(100),
						through:     clientmodel.TimestampFromUnix(1000),
					},
					{
						fingerprint: "1111-a-4-a",
						from:        clientmodel.TimestampFromUnix(100),
						through:     clientmodel.TimestampFromUnix(9000),
					},
				},
			},
			out: out{
				{
					fingerprint: "00000000000000001111-a-4-a",
				},
				{
					fingerprint: "00000000000000001111-a-4-a",
				},
				{
					fingerprint: "00000000000000001111-a-4-a",
				},
			},
		},
	}

	for i, scenario := range scenarios {
		builder := &viewRequestBuilder{}

		for _, atTime := range scenario.in.atTimes {
			fingerprint := &clientmodel.Fingerprint{}
			fingerprint.LoadFromString(atTime.fingerprint)
			builder.GetMetricAtTime(fingerprint, atTime.time)
		}

		for _, atInterval := range scenario.in.atIntervals {
			fingerprint := &clientmodel.Fingerprint{}
			fingerprint.LoadFromString(atInterval.fingerprint)
			builder.GetMetricAtInterval(fingerprint, atInterval.from, atInterval.through, atInterval.interval)
		}

		for _, atRange := range scenario.in.atRanges {
			fingerprint := &clientmodel.Fingerprint{}
			fingerprint.LoadFromString(atRange.fingerprint)
			builder.GetMetricRange(fingerprint, atRange.from, atRange.through)
		}

		for j, job := range scenario.out {
			got := builder.PopOp()
			if got.Fingerprint().String() != job.fingerprint {
				t.Errorf("%d.%d. expected fingerprint %s, got %s", i, j, job.fingerprint, got.Fingerprint())
			}
		}
		if builder.HasOp() {
			t.Error("Expected builder to have no scan jobs left.")
		}
	}
}