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Compare text strings directly in testutil 

Signed-off-by: PhilipGough <philip.p.gough@gmail.com>
This commit is contained in:
PhilipGough 2018-11-14 11:55:09 +00:00
parent 30503fe98e
commit f9739b3d97
No known key found for this signature in database
GPG Key ID: 114C620CE7C50D52
1 changed files with 10 additions and 13 deletions
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23
prometheus/testutil/testutil.go
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@ -138,20 +138,13 @@ func GatherAndCompare(g prometheus.Gatherer, expected io.Reader, metricNames ...
}
want := internal.NormalizeMetricFamilies(wantRaw)
if len(got) != len(want) {
return notMatchingError(got, want)
}
for i := range got {
if got[i].String() != want[i].String() {
return notMatchingError(got, want)
}
}
return nil
return compare(got, want)
}
// notMatchingError encodes both provided slices of metric families into the
// text format and creates a readable error message from the result.
func notMatchingError(got, want []*dto.MetricFamily) error {
// compare encodes both provided slices of metric families into the text format,
// compares their string message, and returns an error if they do not match.
// The error contains the encoded text, of both the desired, and actual result.
func compare(got, want []*dto.MetricFamily) error {
var gotBuf, wantBuf bytes.Buffer
enc := expfmt.NewEncoder(&gotBuf, expfmt.FmtText)
for _, mf := range got {
@ -166,7 +159,8 @@ func notMatchingError(got, want []*dto.MetricFamily) error {
}
}
return fmt.Errorf(`
if wantBuf.String() != gotBuf.String() {
return fmt.Errorf(`
metric output does not match expectation; want:
%s
@ -175,6 +169,9 @@ got:
%s
`, wantBuf.String(), gotBuf.String())
}
return nil
}
func filterMetrics(metrics []*dto.MetricFamily, names []string) []*dto.MetricFamily {