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Improve test coverage, and don't send empty batches in OC bridge (#3263)
* improve test coverage, and don't send empty batches in OC bridge * Update bridge/opencensus/metric_test.go Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> * remove 1.18 rule Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| // Copyright The OpenTelemetry 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 opencensus // import "go.opentelemetry.io/otel/bridge/opencensus" | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
| ocmetricdata "go.opencensus.io/metric/metricdata" | ||
| ocresource "go.opencensus.io/resource" | ||
|
|
||
| "go.opentelemetry.io/otel/attribute" | ||
| "go.opentelemetry.io/otel/sdk/instrumentation" | ||
| "go.opentelemetry.io/otel/sdk/metric" | ||
| "go.opentelemetry.io/otel/sdk/metric/metricdata" | ||
| "go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest" | ||
| "go.opentelemetry.io/otel/sdk/resource" | ||
| ) | ||
|
|
||
| func TestPushMetricsExporter(t *testing.T) { | ||
| now := time.Now() | ||
| for _, tc := range []struct { | ||
| desc string | ||
| input []*ocmetricdata.Metric | ||
| inputResource *resource.Resource | ||
| exportErr error | ||
| expected *metricdata.ResourceMetrics | ||
| expectErr bool | ||
| }{ | ||
| { | ||
| desc: "empty batch isn't sent", | ||
| }, | ||
| { | ||
| desc: "export error", | ||
| exportErr: fmt.Errorf("failed to export"), | ||
| input: []*ocmetricdata.Metric{ | ||
| { | ||
| Resource: &ocresource.Resource{ | ||
| Labels: map[string]string{ | ||
| "R1": "V1", | ||
| "R2": "V2", | ||
| }, | ||
| }, | ||
| TimeSeries: []*ocmetricdata.TimeSeries{ | ||
| { | ||
| StartTime: now, | ||
| Points: []ocmetricdata.Point{ | ||
| {Value: int64(123), Time: now}, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| expectErr: true, | ||
| }, | ||
| { | ||
| desc: "success", | ||
| input: []*ocmetricdata.Metric{ | ||
| { | ||
| Resource: &ocresource.Resource{ | ||
| Labels: map[string]string{ | ||
| "R1": "V1", | ||
| "R2": "V2", | ||
| }, | ||
| }, | ||
| TimeSeries: []*ocmetricdata.TimeSeries{ | ||
| { | ||
| StartTime: now, | ||
| Points: []ocmetricdata.Point{ | ||
| {Value: int64(123), Time: now}, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| inputResource: resource.NewSchemaless( | ||
| attribute.String("R1", "V1"), | ||
| attribute.String("R2", "V2"), | ||
| ), | ||
| expected: &metricdata.ResourceMetrics{ | ||
| Resource: resource.NewSchemaless( | ||
| attribute.String("R1", "V1"), | ||
| attribute.String("R2", "V2"), | ||
| ), | ||
| ScopeMetrics: []metricdata.ScopeMetrics{ | ||
| { | ||
| Scope: instrumentation.Scope{ | ||
| Name: scopeName, | ||
| }, | ||
| Metrics: []metricdata.Metrics{ | ||
| { | ||
| Name: "", | ||
| Description: "", | ||
| Unit: "", | ||
| Data: metricdata.Gauge[int64]{ | ||
| DataPoints: []metricdata.DataPoint[int64]{ | ||
| { | ||
| Attributes: attribute.NewSet(), | ||
| StartTime: now, | ||
| Time: now, | ||
| Value: 123, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| } { | ||
| t.Run(tc.desc, func(t *testing.T) { | ||
| fake := &fakeExporter{err: tc.exportErr} | ||
| exporter := NewMetricExporter(fake, tc.inputResource) | ||
| err := exporter.ExportMetrics(context.Background(), tc.input) | ||
| if tc.expectErr { | ||
| require.Error(t, err) | ||
| } else { | ||
| require.NoError(t, err) | ||
| } | ||
| if tc.expected != nil { | ||
| require.NotNil(t, fake.data) | ||
| metricdatatest.AssertEqual(t, *tc.expected, *fake.data) | ||
| } else { | ||
| require.Nil(t, fake.data) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| type fakeExporter struct { | ||
| metric.Exporter | ||
| data *metricdata.ResourceMetrics | ||
| err error | ||
| } | ||
|
|
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| func (f *fakeExporter) Export(ctx context.Context, data metricdata.ResourceMetrics) error { | ||
| if f.err == nil { | ||
| f.data = &data | ||
| } | ||
| return f.err | ||
| } |
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