util_test.go

package main

import (
	"fmt"
	"io"
	"net/http"
	"path/filepath"
	"reflect"
	"runtime"
	"testing"
)

type ReadCloserMock struct {
	io.ReadCloser
	ReaderFunc func(p []byte) (n int, err error)
	CloserFunc func() error
}

func (rcm *ReadCloserMock) Read(p []byte) (n int, err error) {
	if rcm.ReaderFunc == nil {
		return rcm.ReadCloser.Read(p)
	}
	return rcm.ReaderFunc(p)
}

func (rcm *ReadCloserMock) Close() error {
	if rcm.CloserFunc == nil {
		return rcm.ReadCloser.Close()
	}
	return rcm.CloserFunc()
}

type RoundTripFunc func(req *http.Request) *http.Response

func (f RoundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
	return f(req), nil
}

func NewTestClient(fn RoundTripFunc) *http.Client {
	return &http.Client{
		Transport: RoundTripFunc(fn),
	}
}

// assert fails the test if the condition is false.
func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
	if !condition {
		_, file, line, _ := runtime.Caller(1)
		fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{filepath.Base(file), line}, v...)...)
		tb.FailNow()
	}
}

// ok fails the test if an err is not nil.
func ok(tb testing.TB, err error) {
	if err != nil {
		_, file, line, _ := runtime.Caller(1)
		fmt.Printf("\033[31m%s:%d: unexpected error: %s\033[39m\n\n", filepath.Base(file), line, err.Error())
		tb.FailNow()
	}
}

// equals fails the test if exp is not equal to act.
func equals(tb testing.TB, exp, act interface{}) {
	if !reflect.DeepEqual(exp, act) {
		_, file, line, _ := runtime.Caller(1)
		fmt.Printf("\033[31m%s:%d:\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, exp, act)
		tb.FailNow()
	}
}