AddDelay rewrites a given block with delay.

CreateBlock writes a block with the given series and numSamples samples each.

CreateBlockWithBlockDelay writes a block with the given series and numSamples samples each.

CreateBlockWithChurn writes a block with the given series.

CreateBlockWithTombstone is same as CreateBlock but leaves tombstones which mimics the Prometheus local block.

CreateEmptyBlock produces empty block like it was the case before fix: https://github.com/prometheus/tsdb/pull/374.

CreateFloatHistogramBlockWithDelay writes a block with the given float native histogram series and numSamples samples each.

CreateHistogramBlockWithDelay writes a block with the given native histogram series and numSamples samples each.

FreePort returns port that is free now.

NewPrometheus creates a new test Prometheus instance that will listen on local address.

NewPrometheusOnPath creates a new test Prometheus instance that will listen on local address and given prefix path.

RandRange returns a random int64 from [min, max].

A placeholder for actual Prometheus instance address in the scrape config.

Prometheus represents a test instance for integration testing.