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check file changes in tests

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This commit is contained in:
William Banfield
2022-05-09 18:34:14 -04:00
parent cc81b63094
commit eed64b30ce
1 changed files with 14 additions and 0 deletions
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14
scripts/metricsgen/metricsgen_test.go
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@@ -67,6 +67,20 @@ func TestFromData(t *testing.T) {
if _, err := parser.ParseFile(token.NewFileSet(), outFile, nil, parser.AllErrors); err != nil {
t.Fatalf("unable to parse generated file %s: %v", outFile, err)
}
bNew, err := ioutil.ReadFile(outFile)
if err != nil {
t.Fatalf("unable to read generated file %s: %v", outFile, err)
}
goldenFile := path.Join(dirName, "metrics.gen.go")
bOld, err := ioutil.ReadFile(goldenFile)
if err != nil {
t.Fatalf("unable to read file %s: %v", goldenFile, err)
}
if !bytes.Equal(bNew, bOld) {
t.Fatalf("newly generated code in file %s does not match golden file %s\n"+
"if the output of the metricsgen tool is expected to change run the following make target: \n"+
"\tmake metrics", outFile, goldenFile)
}
})
}
}