Function stackCollapse

internal/driver/tagroot_test.go:372–385

stackCollapse returns a slice of strings where each string represents one profile sample in Brendan Gregg's "Folded Stacks" format: " (filename); (filename); (filename) ". This allows the expected values for test cases to be specified in human-readable strings.

(p *profile.Profile)

// allows the expected values for test cases to be specified in human-readable
// strings.
func stackCollapse(p *profile.Profile) []string {
	var ret []string
	for _, s := range p.Sample {
		var funcs []string
		for i := range s.Location {
			loc := s.Location[len(s.Location)-1-i]
			for _, line := range loc.Line {
				funcs = append(funcs, fmt.Sprintf("%s(%s)", line.Function.Name, line.Function.Filename))
			}
		}
		ret = append(ret, fmt.Sprintf("%s %d", strings.Join(funcs, ";"), s.Value[0]))
	}
	return ret
}