Function CallerInfo

assert/assertions.go:212–287

* CallerInfo is necessary because the assert functions use the testing object internally, causing it to print the file:line of the assert method, rather than where the problem actually occurred in calling code.*/ CallerInfo returns an array of strings containing the file and line number of each stac

()

// of each stack frame leading from the current test to the assert call that
// failed.
func CallerInfo() []string {
	var pc uintptr
	var file string
	var line int
	var name string

	const stackFrameBufferSize = 10
	pcs := make([]uintptr, stackFrameBufferSize)

	callers := []string{}
	offset := 1

	for {
		n := runtime.Callers(offset, pcs)

		if n == 0 {
			break
		}

		frames := runtime.CallersFrames(pcs[:n])

		for {
			frame, more := frames.Next()
			pc = frame.PC
			file = frame.File
			line = frame.Line

			// This is a huge edge case, but it will panic if this is the case, see #180
			if file == "<autogenerated>" {
				break
			}

			f := runtime.FuncForPC(pc)
			if f == nil {
				break
			}
			name = f.Name()

			// testing.tRunner is the standard library function that calls
			// tests. Subtests are called directly by tRunner, without going through
			// the Test/Benchmark/Example function that contains the t.Run calls, so
			// with subtests we should break when we hit tRunner, without adding it
			// to the list of callers.
			if name == "testing.tRunner" {
				break
			}

			parts := strings.Split(file, "/")
			if len(parts) > 1 {
				filename := parts[len(parts)-1]
				dir := parts[len(parts)-2]
				if (dir != "assert" && dir != "mock" && dir != "require") || filename == "mock_test.go" {
					callers = append(callers, fmt.Sprintf("%s:%d", file, line))
				}
			}

			// Drop the package
			dotPos := strings.LastIndexByte(name, '.')