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spitz_test.go
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// Copyright (C) 2012 Numerotron Inc.
// Use of this source code is governed by an MIT-style license
// that can be found in the LICENSE file.
package spitz
import (
// "bytes"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"testing"
"time"
)
func parsedAt(p *Pool, name string) (t time.Time) {
tmpl, ok := p.tmpls[name]
if !ok {
return
}
return tmpl.parsedAt
}
func TestRegisterString(t *testing.T) {
s := New("", false)
s.RegisterString("test", "<html><head><title>{{ .Title }}</title></head><body>{{ .Body }}</body></html>")
if s.Len() != 1 {
t.Errorf("expected 1 template after register, got %d", s.Len())
}
}
func TestRenderString(t *testing.T) {
s := New("", false)
s.RegisterString("test", "<html><head><title>{{ .Title }}</title></head><body>{{ .Body }}</body></html>")
data := map[string]string{"Title": "the title", "Body": "the body"}
x, err := s.RenderNoLayoutToString("test", data)
if err != nil {
t.Fatal(err)
}
if x != "<html><head><title>the title</title></head><body>the body</body></html>" {
t.Errorf("incorrect render: %q", x)
}
}
func TestRegister(t *testing.T) {
dir := createTestDir([]templateFile{
{"T0.tmpl.html", `T0 template`},
})
defer os.RemoveAll(dir)
s := New(dir, false)
before := s.Len()
err := s.Register("T0", "", "")
if err != nil {
t.Fatal(err)
}
if s.Len()-before != 1 {
t.Errorf("expected one more template registered, got %d", s.Len()-before)
}
x, err := s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template" {
t.Errorf("render incorrect: %q", x)
}
}
func TestRegisterLayout(t *testing.T) {
dir := createTestDir([]templateFile{
{"header.tmpl.html", `header template`},
{"footer.tmpl.html", `footer template`},
})
defer os.RemoveAll(dir)
s := New(dir, false)
before := len(s.layouts)
err := s.RegisterLayout("alayout", "header", "footer", "", "")
if err != nil {
t.Fatal(err)
}
after := len(s.layouts)
if after-before != 1 {
t.Errorf("expected one more layout, got %d", after-before)
}
}
func TestRenderLayout(t *testing.T) {
dir := createTestDir([]templateFile{
{"header.tmpl.html", `header template`},
{"body.tmpl.html", `body template`},
{"footer.tmpl.html", `footer template`},
})
defer os.RemoveAll(dir)
s := New(dir, false)
err := s.RegisterLayout("alayout", "header", "footer", "", "")
if err != nil {
t.Fatal(err)
}
err = s.Register("body", "", "")
if err != nil {
t.Fatal(err)
}
x, err := s.RenderToString("alayout", "body", nil)
if err != nil {
t.Fatal(err)
}
if x != "header templatebody templatefooter template" {
t.Errorf("incorrect render: %q", x)
}
}
func TestReload(t *testing.T) {
dir := createTestDir([]templateFile{
{"T0.tmpl.html", `T0 template`},
})
defer os.RemoveAll(dir)
s := New(dir, false)
err := s.Register("T0", "", "")
if err != nil {
t.Fatal(err)
}
x, err := s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template" {
t.Errorf("render incorrect: %q", x)
}
writeFile(dir, "T0.tmpl.html", "T0 template updated")
err = s.reloadTemplate("T0")
if err != nil {
t.Fatal(err)
}
x, err = s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template updated" {
t.Errorf("render incorrect: %q", x)
}
}
func TestAutoReload(t *testing.T) {
dir := createTestDir([]templateFile{
{"T0.tmpl.html", `T0 template`},
})
defer os.RemoveAll(dir)
s := New(dir, true)
err := s.Register("T0", "", "")
if err != nil {
t.Fatal(err)
}
x, err := s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template" {
t.Errorf("render incorrect: %q", x)
}
// XXX this sucks, but without this, they get written at the same second and the test fails
time.Sleep(time.Second)
writeFile(dir, "T0.tmpl.html", "T0 template updated")
x, err = s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template updated" {
t.Errorf("render incorrect: %q", x)
}
// make sure it isn't reparsed every request
before := parsedAt(s, "T0")
s.RenderNoLayoutToString("T0", nil)
after := parsedAt(s, "T0")
if after != before {
t.Errorf("template was reparsed even though the file didn't change")
}
}
func TestAutoReloadOff(t *testing.T) {
dir := createTestDir([]templateFile{
{"T0.tmpl.html", `T0 template`},
})
defer os.RemoveAll(dir)
s := New(dir, false)
err := s.Register("T0", "", "")
if err != nil {
t.Fatal(err)
}
x, err := s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template" {
t.Errorf("render incorrect: %q", x)
}
// XXX this sucks, but without this, they get written at the same second and the test fails
time.Sleep(time.Second)
writeFile(dir, "T0.tmpl.html", "T0 template updated")
x, err = s.RenderNoLayoutToString("T0", nil)
if err != nil {
t.Fatal(err)
}
if x != "T0 template" {
t.Errorf("render incorrect: %q", x)
}
}
func BenchmarkRender(b *testing.B) {
b.StopTimer()
dir := createTestDir([]templateFile{
{"header.tmpl.html", `header template`},
{"body.tmpl.html", `body template`},
{"footer.tmpl.html", `footer template`},
})
defer os.RemoveAll(dir)
s := New(dir, false)
err := s.RegisterLayout("alayout", "header", "footer", "", "")
if err != nil {
b.Fatal(err)
}
err = s.Register("body", "", "")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
x, err := s.RenderToString("alayout", "body", nil)
if err != nil {
b.Fatal(err)
}
if x != "header templatebody templatefooter template" {
b.Errorf("incorrect render: %q", x)
}
}
}
/*
func BenchmarkRenderSerial(b *testing.B) {
b.StopTimer()
dir := createTestDir([]templateFile{
{"header.tmpl.html", `header template`},
{"body.tmpl.html", `body template`},
{"footer.tmpl.html", `footer template`},
})
defer os.RemoveAll(dir)
ContentDirectory = dir
err := RegisterLayout("alayout", "header", "footer")
if err != nil {
b.Fatal(err)
}
err = Register("body")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
var content bytes.Buffer
err := renderSerial("alayout", "body", nil, &content)
if err != nil {
b.Fatal(err)
}
if string(content.Bytes()) != "header templatebody templatefooter template" {
b.Errorf("incorrect render: %q", string(content.Bytes()))
}
}
}
// this would probably have a better chance of winning if the templates were more complicated
// (and actually used data)
func BenchmarkRenderParallel(b *testing.B) {
b.StopTimer()
dir := createTestDir([]templateFile{
{"header.tmpl.html", `header template`},
{"body.tmpl.html", `body template`},
{"footer.tmpl.html", `footer template`},
})
defer os.RemoveAll(dir)
ContentDirectory = dir
err := RegisterLayout("alayout", "header", "footer")
if err != nil {
b.Fatal(err)
}
err = Register("body")
if err != nil {
b.Fatal(err)
}
b.StartTimer()
for i := 0; i < b.N; i++ {
var content bytes.Buffer
err := renderParallel("alayout", "body", nil, &content)
if err != nil {
b.Fatal(err)
}
if string(content.Bytes()) != "header templatebody templatefooter template" {
b.Errorf("incorrect render: %q", string(content.Bytes()))
}
}
}
*/
type page struct {
Title string
Body string
Count int32
}
func TestRenderStringWithFunc(t *testing.T) {
s := New("", false)
s.RegisterString("test", "<html><head><title>{{ .Title }}</title></head><body>{{ .Body }} {{ .Count }} {{ plural \"example\" .Count }}</body></html>")
data := &page{Title: "the title", Body: "the body", Count: int32(2)}
x, err := s.RenderNoLayoutToString("test", data)
if err != nil {
t.Fatal(err)
}
if x != "<html><head><title>the title</title></head><body>the body 2 examples</body></html>" {
t.Errorf("incorrect render: %q", x)
}
}
// (from go/src/pkg/text/template/examplefiles_test.go)
// templateFile defines the contents of a template to be stored in a file, for testing.
type templateFile struct {
name string
contents string
}
func createTestDir(files []templateFile) string {
dir, err := ioutil.TempDir("", "template")
if err != nil {
log.Fatal(err)
}
for _, file := range files {
writeFile(dir, file.name, file.contents)
}
return dir
}
func writeFile(dir, name, content string) {
f, err := os.Create(filepath.Join(dir, name))
if err != nil {
log.Fatal(err)
}
defer f.Close()
_, err = io.WriteString(f, content)
if err != nil {
log.Fatal(err)
}
}