// Copyright 2021 The Prometheus Authors // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package textparse import ( "bytes" "encoding/binary" "errors" "io" "testing" "github.com/gogo/protobuf/proto" "github.com/gogo/protobuf/types" "github.com/stretchr/testify/require" "github.com/prometheus/prometheus/model/exemplar" "github.com/prometheus/prometheus/model/histogram" "github.com/prometheus/prometheus/model/labels" dto "github.com/prometheus/prometheus/prompb/io/prometheus/client" ) func createTestProtoBuf(t *testing.T) *bytes.Buffer { testMetricFamilies := []string{ `name: "go_build_info" help: "Build information about the main Go module." type: GAUGE metric: < label: < name: "checksum" value: "" > label: < name: "path" value: "github.com/prometheus/client_golang" > label: < name: "version" value: "(devel)" > gauge: < value: 1 > > `, `name: "go_memstats_alloc_bytes_total" help: "Total number of bytes allocated, even if freed." type: COUNTER metric: < counter: < value: 1.546544e+06 exemplar: < label: < name: "dummyID" value: "42" > value: 12 timestamp: < seconds: 1625851151 nanos: 233181499 > > > > `, `name: "something_untyped" help: "Just to test the untyped type." type: UNTYPED metric: < untyped: < value: 42 > timestamp_ms: 1234567 > `, `name: "test_histogram" help: "Test histogram with many buckets removed to keep it manageable in size." type: HISTOGRAM metric: < histogram: < sample_count: 175 sample_sum: 0.0008280461746287094 bucket: < cumulative_count: 2 upper_bound: -0.0004899999999999998 > bucket: < cumulative_count: 4 upper_bound: -0.0003899999999999998 exemplar: < label: < name: "dummyID" value: "59727" > value: -0.00039 timestamp: < seconds: 1625851155 nanos: 146848499 > > > bucket: < cumulative_count: 16 upper_bound: -0.0002899999999999998 exemplar: < label: < name: "dummyID" value: "5617" > value: -0.00029 > > schema: 3 zero_threshold: 2.938735877055719e-39 zero_count: 2 negative_span: < offset: -162 length: 1 > negative_span: < offset: 23 length: 4 > negative_delta: 1 negative_delta: 3 negative_delta: -2 negative_delta: -1 negative_delta: 1 positive_span: < offset: -161 length: 1 > positive_span: < offset: 8 length: 3 > positive_delta: 1 positive_delta: 2 positive_delta: -1 positive_delta: -1 > timestamp_ms: 1234568 > `, `name: "test_gauge_histogram" help: "Like test_histogram but as gauge histogram." type: GAUGE_HISTOGRAM metric: < histogram: < sample_count: 175 sample_sum: 0.0008280461746287094 bucket: < cumulative_count: 2 upper_bound: -0.0004899999999999998 > bucket: < cumulative_count: 4 upper_bound: -0.0003899999999999998 exemplar: < label: < name: "dummyID" value: "59727" > value: -0.00039 timestamp: < seconds: 1625851155 nanos: 146848499 > > > bucket: < cumulative_count: 16 upper_bound: -0.0002899999999999998 exemplar: < label: < name: "dummyID" value: "5617" > value: -0.00029 > > schema: 3 zero_threshold: 2.938735877055719e-39 zero_count: 2 negative_span: < offset: -162 length: 1 > negative_span: < offset: 23 length: 4 > negative_delta: 1 negative_delta: 3 negative_delta: -2 negative_delta: -1 negative_delta: 1 positive_span: < offset: -161 length: 1 > positive_span: < offset: 8 length: 3 > positive_delta: 1 positive_delta: 2 positive_delta: -1 positive_delta: -1 > timestamp_ms: 1234568 > `, `name: "test_float_histogram" help: "Test float histogram with many buckets removed to keep it manageable in size." type: HISTOGRAM metric: < histogram: < sample_count_float: 175.0 sample_sum: 0.0008280461746287094 bucket: < cumulative_count_float: 2.0 upper_bound: -0.0004899999999999998 > bucket: < cumulative_count_float: 4.0 upper_bound: -0.0003899999999999998 exemplar: < label: < name: "dummyID" value: "59727" > value: -0.00039 timestamp: < seconds: 1625851155 nanos: 146848499 > > > bucket: < cumulative_count_float: 16 upper_bound: -0.0002899999999999998 exemplar: < label: < name: "dummyID" value: "5617" > value: -0.00029 > > schema: 3 zero_threshold: 2.938735877055719e-39 zero_count_float: 2.0 negative_span: < offset: -162 length: 1 > negative_span: < offset: 23 length: 4 > negative_count: 1.0 negative_count: 3.0 negative_count: -2.0 negative_count: -1.0 negative_count: 1.0 positive_span: < offset: -161 length: 1 > positive_span: < offset: 8 length: 3 > positive_count: 1.0 positive_count: 2.0 positive_count: -1.0 positive_count: -1.0 > timestamp_ms: 1234568 > `, `name: "test_gauge_float_histogram" help: "Like test_float_histogram but as gauge histogram." type: GAUGE_HISTOGRAM metric: < histogram: < sample_count_float: 175.0 sample_sum: 0.0008280461746287094 bucket: < cumulative_count_float: 2.0 upper_bound: -0.0004899999999999998 > bucket: < cumulative_count_float: 4.0 upper_bound: -0.0003899999999999998 exemplar: < label: < name: "dummyID" value: "59727" > value: -0.00039 timestamp: < seconds: 1625851155 nanos: 146848499 > > > bucket: < cumulative_count_float: 16 upper_bound: -0.0002899999999999998 exemplar: < label: < name: "dummyID" value: "5617" > value: -0.00029 > > schema: 3 zero_threshold: 2.938735877055719e-39 zero_count_float: 2.0 negative_span: < offset: -162 length: 1 > negative_span: < offset: 23 length: 4 > negative_count: 1.0 negative_count: 3.0 negative_count: -2.0 negative_count: -1.0 negative_count: 1.0 positive_span: < offset: -161 length: 1 > positive_span: < offset: 8 length: 3 > positive_count: 1.0 positive_count: 2.0 positive_count: -1.0 positive_count: -1.0 > timestamp_ms: 1234568 > `, `name: "test_histogram2" help: "Similar histogram as before but now without sparse buckets." type: HISTOGRAM metric: < histogram: < sample_count: 175 sample_sum: 0.000828 bucket: < cumulative_count: 2 upper_bound: -0.00048 > bucket: < cumulative_count: 4 upper_bound: -0.00038 exemplar: < label: < name: "dummyID" value: "59727" > value: -0.00038 timestamp: < seconds: 1625851153 nanos: 146848499 > > > bucket: < cumulative_count: 16 upper_bound: 1 exemplar: < label: < name: "dummyID" value: "5617" > value: -0.000295 > > schema: 0 zero_threshold: 0 > > `, `name: "test_histogram_family" help: "Test histogram metric family with two very simple histograms." type: HISTOGRAM metric: < label: < name: "foo" value: "bar" > histogram: < sample_count: 5 sample_sum: 12.1 bucket: < cumulative_count: 2 upper_bound: 1.1 > bucket: < cumulative_count: 3 upper_bound: 2.2 > schema: 3 positive_span: < offset: 8 length: 2 > positive_delta: 2 positive_delta: 1 > > metric: < label: < name: "foo" value: "baz" > histogram: < sample_count: 6 sample_sum: 13.1 bucket: < cumulative_count: 1 upper_bound: 1.1 > bucket: < cumulative_count: 5 upper_bound: 2.2 > schema: 3 positive_span: < offset: 8 length: 2 > positive_delta: 1 positive_delta: 4 > > `, `name: "test_float_histogram_with_zerothreshold_zero" help: "Test float histogram with a zero threshold of zero." type: HISTOGRAM metric: < histogram: < sample_count_float: 5.0 sample_sum: 12.1 schema: 3 positive_span: < offset: 8 length: 2 > positive_count: 2.0 positive_count: 3.0 > > `, `name: "rpc_durations_seconds" help: "RPC latency distributions." type: SUMMARY metric: < label: < name: "service" value: "exponential" > summary: < sample_count: 262 sample_sum: 0.00025551262820703587 quantile: < quantile: 0.5 value: 6.442786329648548e-07 > quantile: < quantile: 0.9 value: 1.9435742936658396e-06 > quantile: < quantile: 0.99 value: 4.0471608667037015e-06 > > > `, `name: "without_quantiles" help: "A summary without quantiles." type: SUMMARY metric: < summary: < sample_count: 42 sample_sum: 1.234 > > `, `name: "empty_histogram" help: "A histogram without observations and with a zero threshold of zero but with a no-op span to identify it as a native histogram." type: HISTOGRAM metric: < histogram: < positive_span: < offset: 0 length: 0 > > > `, `name: "test_counter_with_createdtimestamp" help: "A counter with a created timestamp." type: COUNTER metric: < counter: < value: 42 created_timestamp: < seconds: 1 nanos: 1 > > > `, `name: "test_summary_with_createdtimestamp" help: "A summary with a created timestamp." type: SUMMARY metric: < summary: < sample_count: 42 sample_sum: 1.234 created_timestamp: < seconds: 1 nanos: 1 > > > `, `name: "test_histogram_with_createdtimestamp" help: "A histogram with a created timestamp." type: HISTOGRAM metric: < histogram: < created_timestamp: < seconds: 1 nanos: 1 > positive_span: < offset: 0 length: 0 > > > `, `name: "test_gaugehistogram_with_createdtimestamp" help: "A gauge histogram with a created timestamp." type: GAUGE_HISTOGRAM metric: < histogram: < created_timestamp: < seconds: 1 nanos: 1 > positive_span: < offset: 0 length: 0 > > > `, } varintBuf := make([]byte, binary.MaxVarintLen32) buf := &bytes.Buffer{} for _, tmf := range testMetricFamilies { pb := &dto.MetricFamily{} // From text to proto message. require.NoError(t, proto.UnmarshalText(tmf, pb)) // From proto message to binary protobuf. protoBuf, err := proto.Marshal(pb) require.NoError(t, err) // Write first length, then binary protobuf. varintLength := binary.PutUvarint(varintBuf, uint64(len(protoBuf))) buf.Write(varintBuf[:varintLength]) buf.Write(protoBuf) } return buf } func TestProtobufParse(t *testing.T) { type parseResult struct { lset labels.Labels m string t int64 v float64 typ MetricType help string unit string comment string shs *histogram.Histogram fhs *histogram.FloatHistogram e []exemplar.Exemplar ct *types.Timestamp } inputBuf := createTestProtoBuf(t) scenarios := []struct { name string parser Parser expected []parseResult }{ { name: "ignore classic buckets of native histograms", parser: NewProtobufParser(inputBuf.Bytes(), false), expected: []parseResult{ { m: "go_build_info", help: "Build information about the main Go module.", }, { m: "go_build_info", typ: MetricTypeGauge, }, { m: "go_build_info\xFFchecksum\xFF\xFFpath\xFFgithub.com/prometheus/client_golang\xFFversion\xFF(devel)", v: 1, lset: labels.FromStrings( "__name__", "go_build_info", "checksum", "", "path", "github.com/prometheus/client_golang", "version", "(devel)", ), }, { m: "go_memstats_alloc_bytes_total", help: "Total number of bytes allocated, even if freed.", }, { m: "go_memstats_alloc_bytes_total", typ: MetricTypeCounter, }, { m: "go_memstats_alloc_bytes_total", v: 1.546544e+06, lset: labels.FromStrings( "__name__", "go_memstats_alloc_bytes_total", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "42"), Value: 12, HasTs: true, Ts: 1625851151233}, }, }, { m: "something_untyped", help: "Just to test the untyped type.", }, { m: "something_untyped", typ: MetricTypeUnknown, }, { m: "something_untyped", t: 1234567, v: 42, lset: labels.FromStrings( "__name__", "something_untyped", ), }, { m: "test_histogram", help: "Test histogram with many buckets removed to keep it manageable in size.", }, { m: "test_histogram", typ: MetricTypeHistogram, }, { m: "test_histogram", t: 1234568, shs: &histogram.Histogram{ Count: 175, ZeroCount: 2, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []int64{1, 2, -1, -1}, NegativeBuckets: []int64{1, 3, -2, -1, 1}, }, lset: labels.FromStrings( "__name__", "test_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { m: "test_gauge_histogram", help: "Like test_histogram but as gauge histogram.", }, { m: "test_gauge_histogram", typ: MetricTypeGaugeHistogram, }, { m: "test_gauge_histogram", t: 1234568, shs: &histogram.Histogram{ CounterResetHint: histogram.GaugeType, Count: 175, ZeroCount: 2, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []int64{1, 2, -1, -1}, NegativeBuckets: []int64{1, 3, -2, -1, 1}, }, lset: labels.FromStrings( "__name__", "test_gauge_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { m: "test_float_histogram", help: "Test float histogram with many buckets removed to keep it manageable in size.", }, { m: "test_float_histogram", typ: MetricTypeHistogram, }, { m: "test_float_histogram", t: 1234568, fhs: &histogram.FloatHistogram{ Count: 175.0, ZeroCount: 2.0, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []float64{1.0, 2.0, -1.0, -1.0}, NegativeBuckets: []float64{1.0, 3.0, -2.0, -1.0, 1.0}, }, lset: labels.FromStrings( "__name__", "test_float_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { m: "test_gauge_float_histogram", help: "Like test_float_histogram but as gauge histogram.", }, { m: "test_gauge_float_histogram", typ: MetricTypeGaugeHistogram, }, { m: "test_gauge_float_histogram", t: 1234568, fhs: &histogram.FloatHistogram{ CounterResetHint: histogram.GaugeType, Count: 175.0, ZeroCount: 2.0, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []float64{1.0, 2.0, -1.0, -1.0}, NegativeBuckets: []float64{1.0, 3.0, -2.0, -1.0, 1.0}, }, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { m: "test_histogram2", help: "Similar histogram as before but now without sparse buckets.", }, { m: "test_histogram2", typ: MetricTypeHistogram, }, { m: "test_histogram2_count", v: 175, lset: labels.FromStrings( "__name__", "test_histogram2_count", ), }, { m: "test_histogram2_sum", v: 0.000828, lset: labels.FromStrings( "__name__", "test_histogram2_sum", ), }, { m: "test_histogram2_bucket\xffle\xff-0.00048", v: 2, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "-0.00048", ), }, { m: "test_histogram2_bucket\xffle\xff-0.00038", v: 4, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "-0.00038", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00038, HasTs: true, Ts: 1625851153146}, }, }, { m: "test_histogram2_bucket\xffle\xff1.0", v: 16, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "1.0", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.000295, HasTs: false}, }, }, { m: "test_histogram2_bucket\xffle\xff+Inf", v: 175, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "+Inf", ), }, { m: "test_histogram_family", help: "Test histogram metric family with two very simple histograms.", }, { m: "test_histogram_family", typ: MetricTypeHistogram, }, { m: "test_histogram_family\xfffoo\xffbar", shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, Count: 5, Sum: 12.1, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: 8, Length: 2}, }, NegativeSpans: []histogram.Span{}, PositiveBuckets: []int64{2, 1}, }, lset: labels.FromStrings( "__name__", "test_histogram_family", "foo", "bar", ), }, { m: "test_histogram_family\xfffoo\xffbaz", shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, Count: 6, Sum: 13.1, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: 8, Length: 2}, }, NegativeSpans: []histogram.Span{}, PositiveBuckets: []int64{1, 4}, }, lset: labels.FromStrings( "__name__", "test_histogram_family", "foo", "baz", ), }, { m: "test_float_histogram_with_zerothreshold_zero", help: "Test float histogram with a zero threshold of zero.", }, { m: "test_float_histogram_with_zerothreshold_zero", typ: MetricTypeHistogram, }, { m: "test_float_histogram_with_zerothreshold_zero", fhs: &histogram.FloatHistogram{ Count: 5.0, Sum: 12.1, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: 8, Length: 2}, }, PositiveBuckets: []float64{2.0, 3.0}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "test_float_histogram_with_zerothreshold_zero", ), }, { m: "rpc_durations_seconds", help: "RPC latency distributions.", }, { m: "rpc_durations_seconds", typ: MetricTypeSummary, }, { m: "rpc_durations_seconds_count\xffservice\xffexponential", v: 262, lset: labels.FromStrings( "__name__", "rpc_durations_seconds_count", "service", "exponential", ), }, { m: "rpc_durations_seconds_sum\xffservice\xffexponential", v: 0.00025551262820703587, lset: labels.FromStrings( "__name__", "rpc_durations_seconds_sum", "service", "exponential", ), }, { m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.5", v: 6.442786329648548e-07, lset: labels.FromStrings( "__name__", "rpc_durations_seconds", "quantile", "0.5", "service", "exponential", ), }, { m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.9", v: 1.9435742936658396e-06, lset: labels.FromStrings( "__name__", "rpc_durations_seconds", "quantile", "0.9", "service", "exponential", ), }, { m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.99", v: 4.0471608667037015e-06, lset: labels.FromStrings( "__name__", "rpc_durations_seconds", "quantile", "0.99", "service", "exponential", ), }, { m: "without_quantiles", help: "A summary without quantiles.", }, { m: "without_quantiles", typ: MetricTypeSummary, }, { m: "without_quantiles_count", v: 42, lset: labels.FromStrings( "__name__", "without_quantiles_count", ), }, { m: "without_quantiles_sum", v: 1.234, lset: labels.FromStrings( "__name__", "without_quantiles_sum", ), }, { m: "empty_histogram", help: "A histogram without observations and with a zero threshold of zero but with a no-op span to identify it as a native histogram.", }, { m: "empty_histogram", typ: MetricTypeHistogram, }, { m: "empty_histogram", shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, PositiveSpans: []histogram.Span{}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "empty_histogram", ), }, { m: "test_counter_with_createdtimestamp", help: "A counter with a created timestamp.", }, { m: "test_counter_with_createdtimestamp", typ: MetricTypeCounter, }, { m: "test_counter_with_createdtimestamp", v: 42, ct: &types.Timestamp{Seconds: 1, Nanos: 1}, lset: labels.FromStrings( "__name__", "test_counter_with_createdtimestamp", ), }, { m: "test_summary_with_createdtimestamp", help: "A summary with a created timestamp.", }, { m: "test_summary_with_createdtimestamp", typ: MetricTypeSummary, }, { m: "test_summary_with_createdtimestamp_count", v: 42, ct: &types.Timestamp{Seconds: 1, Nanos: 1}, lset: labels.FromStrings( "__name__", "test_summary_with_createdtimestamp_count", ), }, { m: "test_summary_with_createdtimestamp_sum", v: 1.234, ct: &types.Timestamp{Seconds: 1, Nanos: 1}, lset: labels.FromStrings( "__name__", "test_summary_with_createdtimestamp_sum", ), }, { m: "test_histogram_with_createdtimestamp", help: "A histogram with a created timestamp.", }, { m: "test_histogram_with_createdtimestamp", typ: MetricTypeHistogram, }, { m: "test_histogram_with_createdtimestamp", ct: &types.Timestamp{Seconds: 1, Nanos: 1}, shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, PositiveSpans: []histogram.Span{}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "test_histogram_with_createdtimestamp", ), }, { m: "test_gaugehistogram_with_createdtimestamp", help: "A gauge histogram with a created timestamp.", }, { m: "test_gaugehistogram_with_createdtimestamp", typ: MetricTypeGaugeHistogram, }, { m: "test_gaugehistogram_with_createdtimestamp", ct: &types.Timestamp{Seconds: 1, Nanos: 1}, shs: &histogram.Histogram{ CounterResetHint: histogram.GaugeType, PositiveSpans: []histogram.Span{}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "test_gaugehistogram_with_createdtimestamp", ), }, }, }, { name: "parse classic and native buckets", parser: NewProtobufParser(inputBuf.Bytes(), true), expected: []parseResult{ { // 0 m: "go_build_info", help: "Build information about the main Go module.", }, { // 1 m: "go_build_info", typ: MetricTypeGauge, }, { // 2 m: "go_build_info\xFFchecksum\xFF\xFFpath\xFFgithub.com/prometheus/client_golang\xFFversion\xFF(devel)", v: 1, lset: labels.FromStrings( "__name__", "go_build_info", "checksum", "", "path", "github.com/prometheus/client_golang", "version", "(devel)", ), }, { // 3 m: "go_memstats_alloc_bytes_total", help: "Total number of bytes allocated, even if freed.", }, { // 4 m: "go_memstats_alloc_bytes_total", typ: MetricTypeCounter, }, { // 5 m: "go_memstats_alloc_bytes_total", v: 1.546544e+06, lset: labels.FromStrings( "__name__", "go_memstats_alloc_bytes_total", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "42"), Value: 12, HasTs: true, Ts: 1625851151233}, }, }, { // 6 m: "something_untyped", help: "Just to test the untyped type.", }, { // 7 m: "something_untyped", typ: MetricTypeUnknown, }, { // 8 m: "something_untyped", t: 1234567, v: 42, lset: labels.FromStrings( "__name__", "something_untyped", ), }, { // 9 m: "test_histogram", help: "Test histogram with many buckets removed to keep it manageable in size.", }, { // 10 m: "test_histogram", typ: MetricTypeHistogram, }, { // 11 m: "test_histogram", t: 1234568, shs: &histogram.Histogram{ Count: 175, ZeroCount: 2, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []int64{1, 2, -1, -1}, NegativeBuckets: []int64{1, 3, -2, -1, 1}, }, lset: labels.FromStrings( "__name__", "test_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 12 m: "test_histogram_count", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_histogram_count", ), }, { // 13 m: "test_histogram_sum", t: 1234568, v: 0.0008280461746287094, lset: labels.FromStrings( "__name__", "test_histogram_sum", ), }, { // 14 m: "test_histogram_bucket\xffle\xff-0.0004899999999999998", t: 1234568, v: 2, lset: labels.FromStrings( "__name__", "test_histogram_bucket", "le", "-0.0004899999999999998", ), }, { // 15 m: "test_histogram_bucket\xffle\xff-0.0003899999999999998", t: 1234568, v: 4, lset: labels.FromStrings( "__name__", "test_histogram_bucket", "le", "-0.0003899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, }, }, { // 16 m: "test_histogram_bucket\xffle\xff-0.0002899999999999998", t: 1234568, v: 16, lset: labels.FromStrings( "__name__", "test_histogram_bucket", "le", "-0.0002899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 17 m: "test_histogram_bucket\xffle\xff+Inf", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_histogram_bucket", "le", "+Inf", ), }, { // 18 m: "test_gauge_histogram", help: "Like test_histogram but as gauge histogram.", }, { // 19 m: "test_gauge_histogram", typ: MetricTypeGaugeHistogram, }, { // 20 m: "test_gauge_histogram", t: 1234568, shs: &histogram.Histogram{ CounterResetHint: histogram.GaugeType, Count: 175, ZeroCount: 2, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []int64{1, 2, -1, -1}, NegativeBuckets: []int64{1, 3, -2, -1, 1}, }, lset: labels.FromStrings( "__name__", "test_gauge_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 21 m: "test_gauge_histogram_count", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_gauge_histogram_count", ), }, { // 22 m: "test_gauge_histogram_sum", t: 1234568, v: 0.0008280461746287094, lset: labels.FromStrings( "__name__", "test_gauge_histogram_sum", ), }, { // 23 m: "test_gauge_histogram_bucket\xffle\xff-0.0004899999999999998", t: 1234568, v: 2, lset: labels.FromStrings( "__name__", "test_gauge_histogram_bucket", "le", "-0.0004899999999999998", ), }, { // 24 m: "test_gauge_histogram_bucket\xffle\xff-0.0003899999999999998", t: 1234568, v: 4, lset: labels.FromStrings( "__name__", "test_gauge_histogram_bucket", "le", "-0.0003899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, }, }, { // 25 m: "test_gauge_histogram_bucket\xffle\xff-0.0002899999999999998", t: 1234568, v: 16, lset: labels.FromStrings( "__name__", "test_gauge_histogram_bucket", "le", "-0.0002899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 26 m: "test_gauge_histogram_bucket\xffle\xff+Inf", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_gauge_histogram_bucket", "le", "+Inf", ), }, { // 27 m: "test_float_histogram", help: "Test float histogram with many buckets removed to keep it manageable in size.", }, { // 28 m: "test_float_histogram", typ: MetricTypeHistogram, }, { // 29 m: "test_float_histogram", t: 1234568, fhs: &histogram.FloatHistogram{ Count: 175.0, ZeroCount: 2.0, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []float64{1.0, 2.0, -1.0, -1.0}, NegativeBuckets: []float64{1.0, 3.0, -2.0, -1.0, 1.0}, }, lset: labels.FromStrings( "__name__", "test_float_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 30 m: "test_float_histogram_count", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_float_histogram_count", ), }, { // 31 m: "test_float_histogram_sum", t: 1234568, v: 0.0008280461746287094, lset: labels.FromStrings( "__name__", "test_float_histogram_sum", ), }, { // 32 m: "test_float_histogram_bucket\xffle\xff-0.0004899999999999998", t: 1234568, v: 2, lset: labels.FromStrings( "__name__", "test_float_histogram_bucket", "le", "-0.0004899999999999998", ), }, { // 33 m: "test_float_histogram_bucket\xffle\xff-0.0003899999999999998", t: 1234568, v: 4, lset: labels.FromStrings( "__name__", "test_float_histogram_bucket", "le", "-0.0003899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, }, }, { // 34 m: "test_float_histogram_bucket\xffle\xff-0.0002899999999999998", t: 1234568, v: 16, lset: labels.FromStrings( "__name__", "test_float_histogram_bucket", "le", "-0.0002899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 35 m: "test_float_histogram_bucket\xffle\xff+Inf", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_float_histogram_bucket", "le", "+Inf", ), }, { // 36 m: "test_gauge_float_histogram", help: "Like test_float_histogram but as gauge histogram.", }, { // 37 m: "test_gauge_float_histogram", typ: MetricTypeGaugeHistogram, }, { // 38 m: "test_gauge_float_histogram", t: 1234568, fhs: &histogram.FloatHistogram{ CounterResetHint: histogram.GaugeType, Count: 175.0, ZeroCount: 2.0, Sum: 0.0008280461746287094, ZeroThreshold: 2.938735877055719e-39, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: -161, Length: 1}, {Offset: 8, Length: 3}, }, NegativeSpans: []histogram.Span{ {Offset: -162, Length: 1}, {Offset: 23, Length: 4}, }, PositiveBuckets: []float64{1.0, 2.0, -1.0, -1.0}, NegativeBuckets: []float64{1.0, 3.0, -2.0, -1.0, 1.0}, }, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 39 m: "test_gauge_float_histogram_count", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram_count", ), }, { // 40 m: "test_gauge_float_histogram_sum", t: 1234568, v: 0.0008280461746287094, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram_sum", ), }, { // 41 m: "test_gauge_float_histogram_bucket\xffle\xff-0.0004899999999999998", t: 1234568, v: 2, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram_bucket", "le", "-0.0004899999999999998", ), }, { // 42 m: "test_gauge_float_histogram_bucket\xffle\xff-0.0003899999999999998", t: 1234568, v: 4, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram_bucket", "le", "-0.0003899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00039, HasTs: true, Ts: 1625851155146}, }, }, { // 43 m: "test_gauge_float_histogram_bucket\xffle\xff-0.0002899999999999998", t: 1234568, v: 16, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram_bucket", "le", "-0.0002899999999999998", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.00029, HasTs: false}, }, }, { // 44 m: "test_gauge_float_histogram_bucket\xffle\xff+Inf", t: 1234568, v: 175, lset: labels.FromStrings( "__name__", "test_gauge_float_histogram_bucket", "le", "+Inf", ), }, { // 45 m: "test_histogram2", help: "Similar histogram as before but now without sparse buckets.", }, { // 46 m: "test_histogram2", typ: MetricTypeHistogram, }, { // 47 m: "test_histogram2_count", v: 175, lset: labels.FromStrings( "__name__", "test_histogram2_count", ), }, { // 48 m: "test_histogram2_sum", v: 0.000828, lset: labels.FromStrings( "__name__", "test_histogram2_sum", ), }, { // 49 m: "test_histogram2_bucket\xffle\xff-0.00048", v: 2, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "-0.00048", ), }, { // 50 m: "test_histogram2_bucket\xffle\xff-0.00038", v: 4, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "-0.00038", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "59727"), Value: -0.00038, HasTs: true, Ts: 1625851153146}, }, }, { // 51 m: "test_histogram2_bucket\xffle\xff1.0", v: 16, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "1.0", ), e: []exemplar.Exemplar{ {Labels: labels.FromStrings("dummyID", "5617"), Value: -0.000295, HasTs: false}, }, }, { // 52 m: "test_histogram2_bucket\xffle\xff+Inf", v: 175, lset: labels.FromStrings( "__name__", "test_histogram2_bucket", "le", "+Inf", ), }, { // 53 m: "test_histogram_family", help: "Test histogram metric family with two very simple histograms.", }, { // 54 m: "test_histogram_family", typ: MetricTypeHistogram, }, { // 55 m: "test_histogram_family\xfffoo\xffbar", shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, Count: 5, Sum: 12.1, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: 8, Length: 2}, }, NegativeSpans: []histogram.Span{}, PositiveBuckets: []int64{2, 1}, }, lset: labels.FromStrings( "__name__", "test_histogram_family", "foo", "bar", ), }, { // 56 m: "test_histogram_family_count\xfffoo\xffbar", v: 5, lset: labels.FromStrings( "__name__", "test_histogram_family_count", "foo", "bar", ), }, { // 57 m: "test_histogram_family_sum\xfffoo\xffbar", v: 12.1, lset: labels.FromStrings( "__name__", "test_histogram_family_sum", "foo", "bar", ), }, { // 58 m: "test_histogram_family_bucket\xfffoo\xffbar\xffle\xff1.1", v: 2, lset: labels.FromStrings( "__name__", "test_histogram_family_bucket", "foo", "bar", "le", "1.1", ), }, { // 59 m: "test_histogram_family_bucket\xfffoo\xffbar\xffle\xff2.2", v: 3, lset: labels.FromStrings( "__name__", "test_histogram_family_bucket", "foo", "bar", "le", "2.2", ), }, { // 60 m: "test_histogram_family_bucket\xfffoo\xffbar\xffle\xff+Inf", v: 5, lset: labels.FromStrings( "__name__", "test_histogram_family_bucket", "foo", "bar", "le", "+Inf", ), }, { // 61 m: "test_histogram_family\xfffoo\xffbaz", shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, Count: 6, Sum: 13.1, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: 8, Length: 2}, }, NegativeSpans: []histogram.Span{}, PositiveBuckets: []int64{1, 4}, }, lset: labels.FromStrings( "__name__", "test_histogram_family", "foo", "baz", ), }, { // 62 m: "test_histogram_family_count\xfffoo\xffbaz", v: 6, lset: labels.FromStrings( "__name__", "test_histogram_family_count", "foo", "baz", ), }, { // 63 m: "test_histogram_family_sum\xfffoo\xffbaz", v: 13.1, lset: labels.FromStrings( "__name__", "test_histogram_family_sum", "foo", "baz", ), }, { // 64 m: "test_histogram_family_bucket\xfffoo\xffbaz\xffle\xff1.1", v: 1, lset: labels.FromStrings( "__name__", "test_histogram_family_bucket", "foo", "baz", "le", "1.1", ), }, { // 65 m: "test_histogram_family_bucket\xfffoo\xffbaz\xffle\xff2.2", v: 5, lset: labels.FromStrings( "__name__", "test_histogram_family_bucket", "foo", "baz", "le", "2.2", ), }, { // 66 m: "test_histogram_family_bucket\xfffoo\xffbaz\xffle\xff+Inf", v: 6, lset: labels.FromStrings( "__name__", "test_histogram_family_bucket", "foo", "baz", "le", "+Inf", ), }, { // 67 m: "test_float_histogram_with_zerothreshold_zero", help: "Test float histogram with a zero threshold of zero.", }, { // 68 m: "test_float_histogram_with_zerothreshold_zero", typ: MetricTypeHistogram, }, { // 69 m: "test_float_histogram_with_zerothreshold_zero", fhs: &histogram.FloatHistogram{ Count: 5.0, Sum: 12.1, Schema: 3, PositiveSpans: []histogram.Span{ {Offset: 8, Length: 2}, }, PositiveBuckets: []float64{2.0, 3.0}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "test_float_histogram_with_zerothreshold_zero", ), }, { // 70 m: "rpc_durations_seconds", help: "RPC latency distributions.", }, { // 71 m: "rpc_durations_seconds", typ: MetricTypeSummary, }, { // 72 m: "rpc_durations_seconds_count\xffservice\xffexponential", v: 262, lset: labels.FromStrings( "__name__", "rpc_durations_seconds_count", "service", "exponential", ), }, { // 73 m: "rpc_durations_seconds_sum\xffservice\xffexponential", v: 0.00025551262820703587, lset: labels.FromStrings( "__name__", "rpc_durations_seconds_sum", "service", "exponential", ), }, { // 74 m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.5", v: 6.442786329648548e-07, lset: labels.FromStrings( "__name__", "rpc_durations_seconds", "quantile", "0.5", "service", "exponential", ), }, { // 75 m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.9", v: 1.9435742936658396e-06, lset: labels.FromStrings( "__name__", "rpc_durations_seconds", "quantile", "0.9", "service", "exponential", ), }, { // 76 m: "rpc_durations_seconds\xffservice\xffexponential\xffquantile\xff0.99", v: 4.0471608667037015e-06, lset: labels.FromStrings( "__name__", "rpc_durations_seconds", "quantile", "0.99", "service", "exponential", ), }, { // 77 m: "without_quantiles", help: "A summary without quantiles.", }, { // 78 m: "without_quantiles", typ: MetricTypeSummary, }, { // 79 m: "without_quantiles_count", v: 42, lset: labels.FromStrings( "__name__", "without_quantiles_count", ), }, { // 80 m: "without_quantiles_sum", v: 1.234, lset: labels.FromStrings( "__name__", "without_quantiles_sum", ), }, { // 78 m: "empty_histogram", help: "A histogram without observations and with a zero threshold of zero but with a no-op span to identify it as a native histogram.", }, { // 79 m: "empty_histogram", typ: MetricTypeHistogram, }, { // 80 m: "empty_histogram", shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, PositiveSpans: []histogram.Span{}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "empty_histogram", ), }, { // 81 m: "test_counter_with_createdtimestamp", help: "A counter with a created timestamp.", }, { // 82 m: "test_counter_with_createdtimestamp", typ: MetricTypeCounter, }, { // 83 m: "test_counter_with_createdtimestamp", v: 42, ct: &types.Timestamp{Seconds: 1, Nanos: 1}, lset: labels.FromStrings( "__name__", "test_counter_with_createdtimestamp", ), }, { // 84 m: "test_summary_with_createdtimestamp", help: "A summary with a created timestamp.", }, { // 85 m: "test_summary_with_createdtimestamp", typ: MetricTypeSummary, }, { // 86 m: "test_summary_with_createdtimestamp_count", v: 42, ct: &types.Timestamp{Seconds: 1, Nanos: 1}, lset: labels.FromStrings( "__name__", "test_summary_with_createdtimestamp_count", ), }, { // 87 m: "test_summary_with_createdtimestamp_sum", v: 1.234, ct: &types.Timestamp{Seconds: 1, Nanos: 1}, lset: labels.FromStrings( "__name__", "test_summary_with_createdtimestamp_sum", ), }, { // 88 m: "test_histogram_with_createdtimestamp", help: "A histogram with a created timestamp.", }, { // 89 m: "test_histogram_with_createdtimestamp", typ: MetricTypeHistogram, }, { // 90 m: "test_histogram_with_createdtimestamp", ct: &types.Timestamp{Seconds: 1, Nanos: 1}, shs: &histogram.Histogram{ CounterResetHint: histogram.UnknownCounterReset, PositiveSpans: []histogram.Span{}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "test_histogram_with_createdtimestamp", ), }, { // 91 m: "test_gaugehistogram_with_createdtimestamp", help: "A gauge histogram with a created timestamp.", }, { // 92 m: "test_gaugehistogram_with_createdtimestamp", typ: MetricTypeGaugeHistogram, }, { // 93 m: "test_gaugehistogram_with_createdtimestamp", ct: &types.Timestamp{Seconds: 1, Nanos: 1}, shs: &histogram.Histogram{ CounterResetHint: histogram.GaugeType, PositiveSpans: []histogram.Span{}, NegativeSpans: []histogram.Span{}, }, lset: labels.FromStrings( "__name__", "test_gaugehistogram_with_createdtimestamp", ), }, }, }, } for _, scenario := range scenarios { t.Run(scenario.name, func(t *testing.T) { var ( i int res labels.Labels p = scenario.parser exp = scenario.expected ) for { et, err := p.Next() if errors.Is(err, io.EOF) { break } require.NoError(t, err) switch et { case EntrySeries: m, ts, v := p.Series() var e exemplar.Exemplar var ct types.Timestamp p.Metric(&res) eFound := p.Exemplar(&e) ctFound := p.CreatedTimestamp(&ct) require.Equal(t, exp[i].m, string(m), "i: %d", i) if ts != nil { require.Equal(t, exp[i].t, *ts, "i: %d", i) } else { require.Equal(t, exp[i].t, int64(0), "i: %d", i) } require.Equal(t, exp[i].v, v, "i: %d", i) require.Equal(t, exp[i].lset, res, "i: %d", i) if len(exp[i].e) == 0 { require.Equal(t, false, eFound, "i: %d", i) } else { require.Equal(t, true, eFound, "i: %d", i) require.Equal(t, exp[i].e[0], e, "i: %d", i) require.False(t, p.Exemplar(&e), "too many exemplars returned, i: %d", i) } if exp[i].ct != nil { require.Equal(t, true, ctFound, "i: %d", i) require.Equal(t, exp[i].ct.String(), ct.String(), "i: %d", i) } else { require.Equal(t, false, ctFound, "i: %d", i) } case EntryHistogram: m, ts, shs, fhs := p.Histogram() p.Metric(&res) require.Equal(t, exp[i].m, string(m), "i: %d", i) if ts != nil { require.Equal(t, exp[i].t, *ts, "i: %d", i) } else { require.Equal(t, exp[i].t, int64(0), "i: %d", i) } require.Equal(t, exp[i].lset, res, "i: %d", i) require.Equal(t, exp[i].m, string(m), "i: %d", i) if shs != nil { require.Equal(t, exp[i].shs, shs, "i: %d", i) } else { require.Equal(t, exp[i].fhs, fhs, "i: %d", i) } j := 0 for e := (exemplar.Exemplar{}); p.Exemplar(&e); j++ { require.Equal(t, exp[i].e[j], e, "i: %d", i) e = exemplar.Exemplar{} } require.Equal(t, len(exp[i].e), j, "not enough exemplars found, i: %d", i) case EntryType: m, typ := p.Type() require.Equal(t, exp[i].m, string(m), "i: %d", i) require.Equal(t, exp[i].typ, typ, "i: %d", i) case EntryHelp: m, h := p.Help() require.Equal(t, exp[i].m, string(m), "i: %d", i) require.Equal(t, exp[i].help, string(h), "i: %d", i) case EntryUnit: m, u := p.Unit() require.Equal(t, exp[i].m, string(m), "i: %d", i) require.Equal(t, exp[i].unit, string(u), "i: %d", i) case EntryComment: require.Equal(t, exp[i].comment, string(p.Comment()), "i: %d", i) } i++ } require.Equal(t, len(exp), i) }) } }