Method failWithf

testutils/simplecheck.go:181–203

(failTest bool, format string, args ...interface{})

}

func (t *T) failWithf(failTest bool, format string, args ...interface{}) {
	t.Helper()
	_, file, line, _ := runtime.Caller(2)
	var msg bytes.Buffer
	fmt.Fprintf(&msg, format, args...)
	contextLines, lineIdx := fileContext(file, line, 1)
	if len(contextLines) > 0 {
		msg.WriteString("\ncontext:\n")
		for i, line := range contextLines {
			switch {
			case i == lineIdx:
				fmt.Fprintf(&msg, "> %s\n", line)
			default:
				fmt.Fprintf(&msg, "  %s\n", line)
			}
		}
	}
	if failTest {
		t.Fatal(msg.String())
	} else {
		t.Error(msg.String())
	}
}

// The following code is copied from github.com/getsentry/raven-go.