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component-base: add ScrapeAndCompare wrapper

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Signed-off-by: Damien Grisonnet <dgrisonn@redhat.com>
This commit is contained in:
Damien Grisonnet 2023-02-03 20:35:52 +01:00
parent c34ddb5054
commit c5774a703d
1 changed files with 7 additions and 0 deletions
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7
staging/src/k8s.io/component-base/metrics/testutil/testutil.go
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@ -67,6 +67,13 @@ func CustomCollectAndCompare(c metrics.StableCollector, expected io.Reader, metr
return GatherAndCompare(registry, expected, metricNames...) return GatherAndCompare(registry, expected, metricNames...)
} }
// ScrapeAndCompare calls a remote exporter's endpoint which is expected to return some metrics in
// plain text format. Then it compares it with the results that the `expected` would return.
// If the `metricNames` is not empty it would filter the comparison only to the given metric names.
func ScrapeAndCompare(url string, expected io.Reader, metricNames ...string) error {
return testutil.ScrapeAndCompare(url, expected, metricNames...)
}
// NewFakeKubeRegistry creates a fake `KubeRegistry` that takes the input version as `build in version`. // NewFakeKubeRegistry creates a fake `KubeRegistry` that takes the input version as `build in version`.
// It should only be used in testing scenario especially for the deprecated metrics. // It should only be used in testing scenario especially for the deprecated metrics.
// The input version format should be `major.minor.patch`, e.g. '1.18.0'. // The input version format should be `major.minor.patch`, e.g. '1.18.0'.