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// Copyright 2018 The Hugo Authors. All rights reserved.
//
// 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 livereloadinject
import (
"bytes"
"io"
"net/url"
"strings"
"testing"
qt "github.com/frankban/quicktest"
"github.com/gohugoio/hugo/transform"
)
func TestLiveReloadInject(t *testing.T) {
c := qt.New(t)
lrurl, err := url.Parse("http://localhost:1234/subpath")
if err != nil {
t.Errorf("Parsing test URL failed")
return
}
expectBase := `<script src="/subpath/livereload.js?mindelay=10&v=2&port=1234&path=subpath/livereload" data-no-instant defer></script>`
apply := func(s string) string {
out := new(bytes.Buffer)
in := strings.NewReader(s)
tr := transform.New(New(*lrurl))
tr.Apply(out, in)
return out.String()
}
c.Run("Inject after head tag", func(c *qt.C) {
c.Assert(apply("<!doctype html><html><head>after"), qt.Equals, "<!doctype html><html><head>"+expectBase+"after")
})
c.Run("Inject after head tag when doctype and html omitted", func(c *qt.C) {
c.Assert(apply("<head>after"), qt.Equals, "<head>"+expectBase+"after")
})
c.Run("Inject after html when head omitted", func(c *qt.C) {
c.Assert(apply("<html>after"), qt.Equals, "<html>"+expectBase+"after")
})
c.Run("Inject after doctype when head and html omitted", func(c *qt.C) {
c.Assert(apply("<!doctype html>after"), qt.Equals, "<!doctype html>"+expectBase+"after")
})
c.Run("Inject before other elements if all else omitted", func(c *qt.C) {
c.Assert(apply("<title>after</title>"), qt.Equals, expectBase+"<title>after</title>")
})
c.Run("Inject before text content if all else omitted", func(c *qt.C) {
c.Assert(apply("after"), qt.Equals, expectBase+"after")
})
c.Run("Inject after HeAd tag MiXed CaSe", func(c *qt.C) {
c.Assert(apply("<HeAd>AfTer"), qt.Equals, "<HeAd>"+expectBase+"AfTer")
})
c.Run("Inject after HtMl tag MiXed CaSe", func(c *qt.C) {
c.Assert(apply("<HtMl>AfTer"), qt.Equals, "<HtMl>"+expectBase+"AfTer")
})
c.Run("Inject after doctype mixed case", func(c *qt.C) {
c.Assert(apply("<!DocType HtMl>AfTer"), qt.Equals, "<!DocType HtMl>"+expectBase+"AfTer")
})
c.Run("Inject after html tag with attributes", func(c *qt.C) {
c.Assert(apply(`<html lang="en">after`), qt.Equals, `<html lang="en">`+expectBase+"after")
})
c.Run("Inject after html tag with newline", func(c *qt.C) {
c.Assert(apply("<html\n>after"), qt.Equals, "<html\n>"+expectBase+"after")
})
c.Run("Skip comments and whitespace", func(c *qt.C) {
c.Assert(
apply(" <!--x--> <!doctype html>\n<?xml instruction ?> <head>after"),
qt.Equals,
" <!--x--> <!doctype html>\n<?xml instruction ?> <head>"+expectBase+"after",
)
})
c.Run("Do not search inside comment", func(c *qt.C) {
c.Assert(apply("<html><!--<head>-->"), qt.Equals, "<html><!--<head>-->"+expectBase)
})
c.Run("Do not search inside scripts", func(c *qt.C) {
c.Assert(apply("<html><script>`<head>`</script>"), qt.Equals, "<html>"+expectBase+"<script>`<head>`</script>")
})
c.Run("Do not search inside templates", func(c *qt.C) {
c.Assert(apply("<html><template><head></template>"), qt.Not(qt.Equals), "<html><template><head>"+expectBase+"</template>")
})
c.Run("Search from the start of the input", func(c *qt.C) {
c.Assert(apply("<head>after<head>"), qt.Equals, "<head>"+expectBase+"after<head>")
})
c.Run("Do not mistake header for head", func(c *qt.C) {
c.Assert(apply("<html><header>"), qt.Equals, "<html>"+expectBase+"<header>")
})
c.Run("Do not mistake custom elements for head", func(c *qt.C) {
c.Assert(apply("<html><head-custom>"), qt.Equals, "<html>"+expectBase+"<head-custom>")
})
}
func BenchmarkLiveReloadInject(b *testing.B) {
s := `
<html>
<head>
</head>
<body>
</body>
</html>
`
in := strings.NewReader(s)
lrurl, err := url.Parse("http://localhost:1234/subpath")
if err != nil {
b.Fatalf("Parsing test URL failed")
}
tr := transform.New(New(*lrurl))
b.ResetTimer()
for i := 0; i < b.N; i++ {
in.Seek(0, 0)
tr.Apply(io.Discard, in)
}
}
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