server/templates/bundle_test.go

// Copyright 2015 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package templates

import (
	"bytes"
	"context"
	"io/ioutil"
	"net/http"
	"os"
	"path/filepath"
	"testing"

	. "github.com/smartystreets/goconvey/convey"
)

func TestRender(t *testing.T) {
	assets := map[string]string{
		"includes/base": `
{{define "base"}}
base
{{template "content" .}}
{{end}}
`,
		"pages/page": `
{{define "content"}}
content {{.arg1}} {{.arg2}}
{{end}}
`,
	}

	Convey("AssetsLoader works", t, func(conv C) {
		loaderTest(conv, AssetsLoader(assets))
	})

	Convey("FileSystemLoader works", t, func(conv C) {
		dir, err := ioutil.TempDir("", "luci-go-templates")
		So(err, ShouldBeNil)
		defer os.RemoveAll(dir)

		for k, v := range assets {
			path := filepath.Join(dir, filepath.FromSlash(k))
			So(os.MkdirAll(filepath.Dir(path), 0777), ShouldBeNil)
			So(os.WriteFile(path, []byte(v), 0666), ShouldBeNil)
		}

		loaderTest(conv, FileSystemLoader(dir))
	})
}

func loaderTest(conv C, l Loader) {
	b := Bundle{
		Loader:          l,
		DefaultTemplate: "base",
		DefaultArgs: func(c context.Context, e *Extra) (Args, error) {
			conv.So(e.Request.Host, ShouldEqual, "hi.example.com")
			return Args{"arg1": "val1"}, nil
		},
	}
	c := Use(context.Background(), &b, &Extra{
		Request: &http.Request{Host: "hi.example.com"},
	})

	tmpl, err := Get(c, "pages/page")
	conv.So(tmpl, ShouldNotBeNil)
	conv.So(err, ShouldBeNil)

	blob, err := Render(c, "pages/page", Args{"arg2": "val2"})
	conv.So(err, ShouldBeNil)
	conv.So(string(blob), ShouldEqual, "\nbase\n\ncontent val1 val2\n\n")

	buf := bytes.Buffer{}
	MustRender(c, &buf, "pages/page", Args{"arg2": "val2"})
	conv.So(buf.String(), ShouldEqual, "\nbase\n\ncontent val1 val2\n\n")
}