CaptureOutput replaces os.Stdout and os.Stderr with new pipes, that will write output to buffers.

EqualSlices is a comparison function for slices that treats nil slices as equivalent to empty slices (which the assert.Equals assertion does not).

explicit decoded version of GenerateTestHistogram and GenerateTestFloatHistogram.

NewTB creates tb from testing.TB.

RequireFloatHistogramEqual ignores counter resets of non gauge histograms.

RequireHistogramEqual ignores counter resets of non gauge histograms.

RequireIteratorFloat checks that the iterator contains the expected float value and type at the position.

RequireIteratorFloatHistogram checks that the iterator contains the expected float histogram value and type at the position.

RequireIteratorHistogram checks that the iterator contains the expected histogram value and type at the position.

We use unsafe casting to convert between some Mimir and Prometheus types For this to be safe, the two types need to have the same shape (same fields in the same order).

TB represents union of test and benchmark.