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test.go
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package test
import (
"bytes"
"errors"
"fmt"
"math"
"reflect"
"runtime"
"strings"
"testing"
)
// ErrPlain is the default error that is returned for functions in this package.
var ErrPlain = errors.New("error")
////////////////////////////////////////////////////////////////
func fileline(i int) string {
_, file, line, ok := runtime.Caller(i)
if !ok {
return ""
}
parts := strings.Split(file, "/")
file = parts[len(parts)-1]
return fmt.Sprintf("%s:%d", file, line)
}
func trace() string {
trace2 := fileline(2)
trace3 := fileline(3)
return "\r " + strings.Repeat(" ", len(fmt.Sprintf("%s:", trace2))) + "\r " + trace3
}
func message(msgs ...interface{}) string {
if len(msgs) == 0 {
return ""
}
s := fmt.Sprintln(msgs...)
s = s[:len(s)-1] // remove newline
return ": " + s
}
func printable(s string) string {
s = strings.Replace(s, "\n", `\n`, -1)
s = strings.Replace(s, "\r", `\r`, -1)
s = strings.Replace(s, "\t", `\t`, -1)
s = strings.Replace(s, "\x00", `\0`, -1)
return s
}
const (
Red = "31"
Green = "32"
)
func color(color string, s interface{}) string {
return fmt.Sprintf("\033[00;%sm%v\033[00m", color, s)
}
/////////////////////////////////////////////////////////////////
func Fail(t *testing.T, msgs ...interface{}) {
t.Errorf("%s%s", trace(), message(msgs...))
}
func Error(t *testing.T, err error, msgs ...interface{}) {
if err != nil {
t.Errorf("%s%s: %s", trace(), message(msgs...), color(Red, err.Error()))
}
}
func That(t *testing.T, condition bool, msgs ...interface{}) {
if !condition {
t.Errorf("%s%s: false", trace(), message(msgs...))
}
}
func T(t *testing.T, got, wanted interface{}, msgs ...interface{}) {
gotType := reflect.TypeOf(got)
wantedType := reflect.TypeOf(wanted)
if gotType != wantedType {
t.Errorf("%s%s: type %v != %v", trace(), message(msgs...), color(Red, gotType), color(Green, wantedType))
}
if equals, ok := wantedType.MethodByName("Equals"); ok && equals.Type.NumIn() == 2 && equals.Type.NumOut() == 1 && equals.Type.In(0) == wantedType && equals.Type.In(1) == gotType && equals.Type.Out(0).Kind() == reflect.Bool {
if equals.Func.Call([]reflect.Value{reflect.ValueOf(wanted), reflect.ValueOf(got)})[0].Bool() {
return
}
} else if got == wanted {
return
}
t.Errorf("%s%s: %v != %v", trace(), message(msgs...), color(Red, got), color(Green, wanted))
}
func Bytes(t *testing.T, got, wanted []byte, msgs ...interface{}) {
if !bytes.Equal(got, wanted) {
gotString := printable(string(got))
wantedString := printable(string(wanted))
t.Errorf("%s%s:\n%s\n%s", trace(), message(msgs...), color(Red, gotString), color(Green, wantedString))
}
}
func String(t *testing.T, got, wanted string, msgs ...interface{}) {
if got != wanted {
gotString := printable(got)
wantedString := printable(wanted)
t.Errorf("%s%s:\n%s\n%s", trace(), message(msgs...), color(Red, gotString), color(Green, wantedString))
}
}
func Float(t *testing.T, got, wanted float64, msgs ...interface{}) {
if math.Abs(got-wanted) > 1e-6 {
t.Errorf("%s%s: %v != %v", trace(), message(msgs...), color(Red, got), color(Green, wanted))
}
}
func Minify(t *testing.T, input string, err error, got, wanted string, msgs ...interface{}) {
inputString := printable(input)
if err != nil {
t.Errorf("%s%s:\n%s\n%s", trace(), message(msgs...), inputString, color(Red, err.Error()))
return
}
if got != wanted {
gotString := printable(got)
wantedString := printable(wanted)
t.Errorf("%s%s:\n%s\n%s\n%s", trace(), message(msgs...), inputString, color(Red, gotString), color(Green, wantedString))
}
}