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Published: Jan 27, 2021 License: Apache-2.0 Imports: 16 Imported by: 0



[testbed exporter] -> [otelcol receiver] -> [otelcol exporter] -> [testbed receiver] -> [test harness]

the difference being the testHarness, which is connected to [testbed receiver] as its metrics consumer, listening for datapoints. To start the process, one datapoint is sent into the testbed exporter, it goes through the pipeline, and arrives at the testbed receiver, which passes it along to the test harness. The test harness compares the received datapoint to the original datapoint it sent, and saves any diffs it found in a diffAccumulator instance. Then it sends the next datapoint. This continues until there are no more datapoints. The simple diagram above should have a loop, where [test harness] connects back to [testbed exporter].

Datapoints are supplied to the testHarness by a metricSupplier, which receives all of the metrics it needs upfront. Those metrics are in turn generated by a metricGenerator, which receives its config from a PICT generated file, as the trace correctness funcionality does.



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type MetricDiff

type MetricDiff struct {
	ExpectedValue interface{}
	ActualValue   interface{}
	Msg           string

MetricDiff is intended to support producing human-readable diffs between two MetricData structs during testing. Two MetricDatas, when compared, could produce a list of MetricDiffs containing all of their differences, which could be used to correct the differences between the expected and actual values.

func DiffMetric

func DiffMetric(diffs []*MetricDiff, expected pdata.Metric, actual pdata.Metric) []*MetricDiff

func (MetricDiff) String

func (mf MetricDiff) String() string

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