// Copyright 2016 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 hugolib

import (
	"fmt"
	"path/filepath"
	"reflect"
	"regexp"
	"sort"
	"strings"
	"testing"

	"github.com/spf13/hugo/helpers"
	"github.com/spf13/hugo/hugofs"
	"github.com/spf13/hugo/source"
	"github.com/spf13/hugo/target"
	"github.com/spf13/hugo/tpl"
	"github.com/spf13/viper"
	"github.com/stretchr/testify/require"
)

// TODO(bep) remove
func pageFromString(in, filename string) (*Page, error) {
	return NewPageFrom(strings.NewReader(in), filename)
}

func CheckShortCodeMatch(t *testing.T, input, expected string, withTemplate func(templ tpl.Template) error) {
	CheckShortCodeMatchAndError(t, input, expected, withTemplate, false)
}

func CheckShortCodeMatchAndError(t *testing.T, input, expected string, withTemplate func(templ tpl.Template) error, expectError bool) {
	testCommonResetState()

	// Need some front matter, see https://github.com/spf13/hugo/issues/2337
	contentFile := `---
title: "Title"
---
` + input

	writeSource(t, "content/simple.md", contentFile)

	h, err := newHugoSitesDefaultLanguage()

	if err != nil {
		t.Fatalf("Failed to create sites: %s", err)
	}

	cfg := BuildCfg{SkipRender: true, withTemplate: withTemplate}

	err = h.Build(cfg)

	if err != nil && !expectError {
		t.Fatalf("Shortcode rendered error %s.", err)
	}

	if err == nil && expectError {
		t.Fatalf("No error from shortcode")
	}

	require.Len(t, h.Sites[0].Pages, 1)

	output := strings.TrimSpace(string(h.Sites[0].Pages[0].Content))
	if strings.HasPrefix(output, "<p>") {
		output = output[3:]
	}
	if strings.HasSuffix(output, "</p>") {
		output = output[:len(output)-4]
	}

	expected = strings.TrimSpace(expected)

	if output != expected {
		t.Fatalf("Shortcode render didn't match. got \n%q but expected \n%q", output, expected)
	}
}

func TestShortcodeGoFuzzReports(t *testing.T) {
	tem := tpl.New()

	tem.AddInternalShortcode("sc.html", `foo`)
	p, _ := pageFromString(simplePage, "simple.md")

	for i, this := range []struct {
		data      string
		expectErr bool
	}{
		{"{{</*/", true},
	} {
		output, err := HandleShortcodes(this.data, p, tem)

		if this.expectErr && err == nil {
			t.Errorf("[%d] should have errored", i)
		}

		if !this.expectErr && err != nil {
			t.Errorf("[%d] should not have errored: %s", i, err)
		}

		if !this.expectErr && err == nil && len(output) == 0 {
			t.Errorf("[%d] empty result", i)
		}
	}

}

func TestNonSC(t *testing.T) {

	// notice the syntax diff from 0.12, now comment delims must be added
	CheckShortCodeMatch(t, "{{%/* movie 47238zzb */%}}", "{{% movie 47238zzb %}}", nil)
}

// Issue #929
func TestHyphenatedSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("hyphenated-video.html", `Playing Video {{ .Get 0 }}`)
		return nil
	}

	CheckShortCodeMatch(t, "{{< hyphenated-video 47238zzb >}}", "Playing Video 47238zzb", wt)
}

// Issue #1753
func TestNoTrailingNewline(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("a.html", `{{ .Get 0 }}`)
		return nil
	}

	CheckShortCodeMatch(t, "ab{{< a c >}}d", "abcd", wt)
}

func TestPositionalParamSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("video.html", `Playing Video {{ .Get 0 }}`)
		return nil
	}

	CheckShortCodeMatch(t, "{{< video 47238zzb >}}", "Playing Video 47238zzb", wt)
	CheckShortCodeMatch(t, "{{< video 47238zzb 132 >}}", "Playing Video 47238zzb", wt)
	CheckShortCodeMatch(t, "{{<video 47238zzb>}}", "Playing Video 47238zzb", wt)
	CheckShortCodeMatch(t, "{{<video 47238zzb    >}}", "Playing Video 47238zzb", wt)
	CheckShortCodeMatch(t, "{{<   video   47238zzb    >}}", "Playing Video 47238zzb", wt)
}

func TestPositionalParamIndexOutOfBounds(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("video.html", `Playing Video {{ .Get 1 }}`)
		return nil
	}
	CheckShortCodeMatch(t, "{{< video 47238zzb >}}", "Playing Video error: index out of range for positional param at position 1", wt)
}

// some repro issues for panics in Go Fuzz testing

func TestNamedParamSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("img.html", `<img{{ with .Get "src" }} src="{{.}}"{{end}}{{with .Get "class"}} class="{{.}}"{{end}}>`)
		return nil
	}
	CheckShortCodeMatch(t, `{{< img src="one" >}}`, `<img src="one">`, wt)
	CheckShortCodeMatch(t, `{{< img class="aspen" >}}`, `<img class="aspen">`, wt)
	CheckShortCodeMatch(t, `{{< img src= "one" >}}`, `<img src="one">`, wt)
	CheckShortCodeMatch(t, `{{< img src ="one" >}}`, `<img src="one">`, wt)
	CheckShortCodeMatch(t, `{{< img src = "one" >}}`, `<img src="one">`, wt)
	CheckShortCodeMatch(t, `{{< img src = "one" class = "aspen grove" >}}`, `<img src="one" class="aspen grove">`, wt)
}

// Issue #2294
func TestNestedNamedMissingParam(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("acc.html", `<div class="acc">{{ .Inner }}</div>`)
		tem.AddInternalShortcode("div.html", `<div {{with .Get "class"}} class="{{ . }}"{{ end }}>{{ .Inner }}</div>`)
		tem.AddInternalShortcode("div2.html", `<div {{with .Get 0}} class="{{ . }}"{{ end }}>{{ .Inner }}</div>`)
		return nil
	}
	CheckShortCodeMatch(t,
		`{{% acc %}}{{% div %}}d1{{% /div %}}{{% div2 %}}d2{{% /div2 %}}{{% /acc %}}`,
		"<div class=\"acc\"><div >d1</div><div >d2</div>\n</div>", wt)
}

func TestIsNamedParamsSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("byposition.html", `<div id="{{ .Get 0 }}">`)
		tem.AddInternalShortcode("byname.html", `<div id="{{ .Get "id" }}">`)
		tem.AddInternalShortcode("ifnamedparams.html", `<div id="{{ if .IsNamedParams }}{{ .Get "id" }}{{ else }}{{ .Get 0 }}{{end}}">`)
		return nil
	}
	CheckShortCodeMatch(t, `{{< ifnamedparams id="name" >}}`, `<div id="name">`, wt)
	CheckShortCodeMatch(t, `{{< ifnamedparams position >}}`, `<div id="position">`, wt)
	CheckShortCodeMatch(t, `{{< byname id="name" >}}`, `<div id="name">`, wt)
	CheckShortCodeMatch(t, `{{< byname position >}}`, `<div id="error: cannot access positional params by string name">`, wt)
	CheckShortCodeMatch(t, `{{< byposition position >}}`, `<div id="position">`, wt)
	CheckShortCodeMatch(t, `{{< byposition id="name" >}}`, `<div id="error: cannot access named params by position">`, wt)
}

func TestInnerSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("inside.html", `<div{{with .Get "class"}} class="{{.}}"{{end}}>{{ .Inner }}</div>`)
		return nil
	}
	CheckShortCodeMatch(t, `{{< inside class="aspen" >}}`, `<div class="aspen"></div>`, wt)
	CheckShortCodeMatch(t, `{{< inside class="aspen" >}}More Here{{< /inside >}}`, "<div class=\"aspen\">More Here</div>", wt)
	CheckShortCodeMatch(t, `{{< inside >}}More Here{{< /inside >}}`, "<div>More Here</div>", wt)
}

func TestInnerSCWithMarkdown(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("inside.html", `<div{{with .Get "class"}} class="{{.}}"{{end}}>{{ .Inner }}</div>`)
		return nil
	}
	CheckShortCodeMatch(t, `{{% inside %}}
# More Here

[link](http://spf13.com) and text

{{% /inside %}}`, "<div><h1 id=\"more-here\">More Here</h1>\n\n<p><a href=\"http://spf13.com\">link</a> and text</p>\n</div>", wt)
}

func TestInnerSCWithAndWithoutMarkdown(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("inside.html", `<div{{with .Get "class"}} class="{{.}}"{{end}}>{{ .Inner }}</div>`)
		return nil
	}
	CheckShortCodeMatch(t, `{{% inside %}}
# More Here

[link](http://spf13.com) and text

{{% /inside %}}

And then:

{{< inside >}}
# More Here

This is **plain** text.

{{< /inside >}}
`, "<div><h1 id=\"more-here\">More Here</h1>\n\n<p><a href=\"http://spf13.com\">link</a> and text</p>\n</div>\n\n<p>And then:</p>\n\n<p><div>\n# More Here\n\nThis is **plain** text.\n\n</div>", wt)
}

func TestEmbeddedSC(t *testing.T) {
	CheckShortCodeMatch(t, "{{% test %}}", "This is a simple Test", nil)
	CheckShortCodeMatch(t, `{{% figure src="/found/here" class="bananas orange" %}}`, "\n<figure class=\"bananas orange\">\n    \n        <img src=\"/found/here\" />\n    \n    \n</figure>\n", nil)
	CheckShortCodeMatch(t, `{{% figure src="/found/here" class="bananas orange" caption="This is a caption" %}}`, "\n<figure class=\"bananas orange\">\n    \n        <img src=\"/found/here\" alt=\"This is a caption\" />\n    \n    \n    <figcaption>\n        <p>\n        This is a caption\n        \n            \n        \n        </p> \n    </figcaption>\n    \n</figure>\n", nil)
}

func TestNestedSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("scn1.html", `<div>Outer, inner is {{ .Inner }}</div>`)
		tem.AddInternalShortcode("scn2.html", `<div>SC2</div>`)
		return nil
	}
	CheckShortCodeMatch(t, `{{% scn1 %}}{{% scn2 %}}{{% /scn1 %}}`, "<div>Outer, inner is <div>SC2</div>\n</div>", wt)

	CheckShortCodeMatch(t, `{{< scn1 >}}{{% scn2 %}}{{< /scn1 >}}`, "<div>Outer, inner is <div>SC2</div></div>", wt)
}

func TestNestedComplexSC(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("row.html", `-row-{{ .Inner}}-rowStop-`)
		tem.AddInternalShortcode("column.html", `-col-{{.Inner    }}-colStop-`)
		tem.AddInternalShortcode("aside.html", `-aside-{{    .Inner  }}-asideStop-`)
		return nil
	}
	CheckShortCodeMatch(t, `{{< row >}}1-s{{% column %}}2-**s**{{< aside >}}3-**s**{{< /aside >}}4-s{{% /column %}}5-s{{< /row >}}6-s`,
		"-row-1-s-col-2-<strong>s</strong>-aside-3-<strong>s</strong>-asideStop-4-s-colStop-5-s-rowStop-6-s", wt)

	// turn around the markup flag
	CheckShortCodeMatch(t, `{{% row %}}1-s{{< column >}}2-**s**{{% aside %}}3-**s**{{% /aside %}}4-s{{< /column >}}5-s{{% /row %}}6-s`,
		"-row-1-s-col-2-<strong>s</strong>-aside-3-<strong>s</strong>-asideStop-4-s-colStop-5-s-rowStop-6-s", wt)
}

func TestParentShortcode(t *testing.T) {
	wt := func(tem tpl.Template) error {
		tem.AddInternalShortcode("r1.html", `1: {{ .Get "pr1" }} {{ .Inner }}`)
		tem.AddInternalShortcode("r2.html", `2: {{ .Parent.Get "pr1" }}{{ .Get "pr2" }} {{ .Inner }}`)
		tem.AddInternalShortcode("r3.html", `3: {{ .Parent.Parent.Get "pr1" }}{{ .Parent.Get "pr2" }}{{ .Get "pr3" }} {{ .Inner }}`)
		return nil
	}
	CheckShortCodeMatch(t, `{{< r1 pr1="p1" >}}1: {{< r2 pr2="p2" >}}2: {{< r3 pr3="p3" >}}{{< /r3 >}}{{< /r2 >}}{{< /r1 >}}`,
		"1: p1 1: 2: p1p2 2: 3: p1p2p3 ", wt)

}

func TestFigureImgWidth(t *testing.T) {
	CheckShortCodeMatch(t, `{{% figure src="/found/here" class="bananas orange" alt="apple" width="100px" %}}`, "\n<figure class=\"bananas orange\">\n    \n        <img src=\"/found/here\" alt=\"apple\" width=\"100px\" />\n    \n    \n</figure>\n", nil)
}

func TestHighlight(t *testing.T) {
	testCommonResetState()

	if !helpers.HasPygments() {
		t.Skip("Skip test as Pygments is not installed")
	}
	viper.Set("PygmentsStyle", "bw")
	viper.Set("PygmentsUseClasses", false)

	templ := tpl.New()

	code := `
{{< highlight java >}}
void do();
{{< /highlight >}}`

	p, _ := pageFromString(simplePage, "simple.md")
	output, err := HandleShortcodes(code, p, templ)

	if err != nil {
		t.Fatal("Handle shortcode error", err)
	}
	matched, err := regexp.MatchString("(?s)^\n<div class=\"highlight\" style=\"background: #ffffff\"><pre style=\"line-height: 125%\">.*?void</span> do().*?</pre></div>\n$", output)

	if err != nil {
		t.Fatal("Regexp error", err)
	}

	if !matched {
		t.Error("Hightlight mismatch, got\n", output)
	}
}

const testScPlaceholderRegexp = "{-{-HUGOSHORTCODE-\\d+-}-}"

func TestExtractShortcodes(t *testing.T) {
	for i, this := range []struct {
		name             string
		input            string
		expectShortCodes string
		expect           interface{}
		expectErrorMsg   string
	}{
		{"text", "Some text.", "map[]", "Some text.", ""},
		{"invalid right delim", "{{< tag }}", "", false, "simple:4:.*unrecognized character.*}"},
		{"invalid close", "\n{{< /tag >}}", "", false, "simple:5:.*got closing shortcode, but none is open"},
		{"invalid close2", "\n\n{{< tag >}}{{< /anotherTag >}}", "", false, "simple:6: closing tag for shortcode 'anotherTag' does not match start tag"},
		{"unterminated quote 1", `{{< figure src="im caption="S" >}}`, "", false, "simple:4:.got pos.*"},
		{"unterminated quote 1", `{{< figure src="im" caption="S >}}`, "", false, "simple:4:.*unterm.*}"},
		{"one shortcode, no markup", "{{< tag >}}", "", testScPlaceholderRegexp, ""},
		{"one shortcode, markup", "{{% tag %}}", "", testScPlaceholderRegexp, ""},
		{"one pos param", "{{% tag param1 %}}", `tag([\"param1\"], true){[]}"]`, testScPlaceholderRegexp, ""},
		{"two pos params", "{{< tag param1 param2>}}", `tag([\"param1\" \"param2\"], false){[]}"]`, testScPlaceholderRegexp, ""},
		{"one named param", `{{% tag param1="value" %}}`, `tag([\"param1:value\"], true){[]}`, testScPlaceholderRegexp, ""},
		{"two named params", `{{< tag param1="value1" param2="value2" >}}`, `tag([\"param1:value1\" \"param2:value2\"], false){[]}"]`,
			testScPlaceholderRegexp, ""},
		{"inner", `Some text. {{< inner >}}Inner Content{{< / inner >}}. Some more text.`, `inner([], false){[Inner Content]}`,
			fmt.Sprintf("Some text. %s. Some more text.", testScPlaceholderRegexp), ""},
		// issue #934
		{"inner self-closing", `Some text. {{< inner />}}. Some more text.`, `inner([], false){[]}`,
			fmt.Sprintf("Some text. %s. Some more text.", testScPlaceholderRegexp), ""},
		{"close, but not inner", "{{< tag >}}foo{{< /tag >}}", "", false, "Shortcode 'tag' in page 'simple.md' has no .Inner.*"},
		{"nested inner", `Inner->{{< inner >}}Inner Content->{{% inner2 param1 %}}inner2txt{{% /inner2 %}}Inner close->{{< / inner >}}<-done`,
			`inner([], false){[Inner Content-> inner2([\"param1\"], true){[inner2txt]} Inner close->]}`,
			fmt.Sprintf("Inner->%s<-done", testScPlaceholderRegexp), ""},
		{"nested, nested inner", `Inner->{{< inner >}}inner2->{{% inner2 param1 %}}inner2txt->inner3{{< inner3>}}inner3txt{{</ inner3 >}}{{% /inner2 %}}final close->{{< / inner >}}<-done`,
			`inner([], false){[inner2-> inner2([\"param1\"], true){[inner2txt->inner3 inner3(%!q(<nil>), false){[inner3txt]}]} final close->`,
			fmt.Sprintf("Inner->%s<-done", testScPlaceholderRegexp), ""},
		{"two inner", `Some text. {{% inner %}}First **Inner** Content{{% / inner %}} {{< inner >}}Inner **Content**{{< / inner >}}. Some more text.`,
			`map["{-{-HUGOSHORTCODE-1-}-}:inner([], true){[First **Inner** Content]}" "{-{-HUGOSHORTCODE-2-}-}:inner([], false){[Inner **Content**]}"]`,
			fmt.Sprintf("Some text. %s %s. Some more text.", testScPlaceholderRegexp, testScPlaceholderRegexp), ""},
		{"closed without content", `Some text. {{< inner param1 >}}{{< / inner >}}. Some more text.`, `inner([\"param1\"], false){[]}`,
			fmt.Sprintf("Some text. %s. Some more text.", testScPlaceholderRegexp), ""},
		{"two shortcodes", "{{< sc1 >}}{{< sc2 >}}",
			`map["{-{-HUGOSHORTCODE-1-}-}:sc1([], false){[]}" "{-{-HUGOSHORTCODE-2-}-}:sc2([], false){[]}"]`,
			testScPlaceholderRegexp + testScPlaceholderRegexp, ""},
		{"mix of shortcodes", `Hello {{< sc1 >}}world{{% sc2 p2="2"%}}. And that's it.`,
			`map["{-{-HUGOSHORTCODE-1-}-}:sc1([], false){[]}" "{-{-HUGOSHORTCODE-2-}-}:sc2([\"p2:2\"]`,
			fmt.Sprintf("Hello %sworld%s. And that's it.", testScPlaceholderRegexp, testScPlaceholderRegexp), ""},
		{"mix with inner", `Hello {{< sc1 >}}world{{% inner p2="2"%}}Inner{{%/ inner %}}. And that's it.`,
			`map["{-{-HUGOSHORTCODE-1-}-}:sc1([], false){[]}" "{-{-HUGOSHORTCODE-2-}-}:inner([\"p2:2\"], true){[Inner]}"]`,
			fmt.Sprintf("Hello %sworld%s. And that's it.", testScPlaceholderRegexp, testScPlaceholderRegexp), ""},
	} {

		p, _ := pageFromString(simplePage, "simple.md")
		tem := tpl.New()
		tem.AddInternalShortcode("tag.html", `tag`)
		tem.AddInternalShortcode("sc1.html", `sc1`)
		tem.AddInternalShortcode("sc2.html", `sc2`)
		tem.AddInternalShortcode("inner.html", `{{with .Inner }}{{ . }}{{ end }}`)
		tem.AddInternalShortcode("inner2.html", `{{.Inner}}`)
		tem.AddInternalShortcode("inner3.html", `{{.Inner}}`)

		content, shortCodes, err := extractShortcodes(this.input, p, tem)

		if b, ok := this.expect.(bool); ok && !b {
			if err == nil {
				t.Fatalf("[%d] %s: ExtractShortcodes didn't return an expected error", i, this.name)
			} else {
				r, _ := regexp.Compile(this.expectErrorMsg)
				if !r.MatchString(err.Error()) {
					t.Fatalf("[%d] %s: ExtractShortcodes didn't return an expected error message, got %s but expected %s",
						i, this.name, err.Error(), this.expectErrorMsg)
				}
			}
			continue
		} else {
			if err != nil {
				t.Fatalf("[%d] %s: failed: %q", i, this.name, err)
			}
		}

		var expected string
		av := reflect.ValueOf(this.expect)
		switch av.Kind() {
		case reflect.String:
			expected = av.String()
		}

		r, err := regexp.Compile(expected)

		if err != nil {
			t.Fatalf("[%d] %s: Failed to compile regexp %q: %q", i, this.name, expected, err)
		}

		if strings.Count(content, shortcodePlaceholderPrefix) != len(shortCodes) {
			t.Fatalf("[%d] %s: Not enough placeholders, found %d", i, this.name, len(shortCodes))
		}

		if !r.MatchString(content) {
			t.Fatalf("[%d] %s: Shortcode extract didn't match. got %q but expected %q", i, this.name, content, expected)
		}

		for placeHolder, sc := range shortCodes {
			if !strings.Contains(content, placeHolder) {
				t.Fatalf("[%d] %s: Output does not contain placeholder %q", i, this.name, placeHolder)
			}

			if sc.params == nil {
				t.Fatalf("[%d] %s: Params is nil for shortcode '%s'", i, this.name, sc.name)
			}
		}

		if this.expectShortCodes != "" {
			shortCodesAsStr := fmt.Sprintf("map%q", collectAndSortShortcodes(shortCodes))
			if !strings.Contains(shortCodesAsStr, this.expectShortCodes) {
				t.Fatalf("[%d] %s: Short codes not as expected, got %s but expected %s", i, this.name, shortCodesAsStr, this.expectShortCodes)
			}
		}
	}
}

func TestShortcodesInSite(t *testing.T) {
	testCommonResetState()

	baseURL := "http://foo/bar"
	viper.Set("DefaultExtension", "html")
	viper.Set("DefaultContentLanguage", "en")
	viper.Set("baseurl", baseURL)
	viper.Set("UglyURLs", false)
	viper.Set("verbose", true)

	tests := []struct {
		contentPath string
		content     string
		outFile     string
		expected    string
	}{
		{"sect/doc1.md", `a{{< b >}}c`,
			filepath.FromSlash("sect/doc1/index.html"), "<p>abc</p>\n"},
		// Issue #1642: Multiple shortcodes wrapped in P
		// Deliberately forced to pass even if they maybe shouldn't.
		{"sect/doc2.md", `a

{{< b >}}		
{{< c >}}
{{< d >}}

e`,
			filepath.FromSlash("sect/doc2/index.html"),
			"<p>a</p>\n\n<p>b<br />\nc\nd</p>\n\n<p>e</p>\n"},
		{"sect/doc3.md", `a

{{< b >}}		
{{< c >}}

{{< d >}}

e`,
			filepath.FromSlash("sect/doc3/index.html"),
			"<p>a</p>\n\n<p>b<br />\nc</p>\n\nd\n\n<p>e</p>\n"},
		{"sect/doc4.md", `a
{{< b >}}
{{< b >}}
{{< b >}}
{{< b >}}
{{< b >}}










`,
			filepath.FromSlash("sect/doc4/index.html"),
			"<p>a\nb\nb\nb\nb\nb</p>\n"},
		// #2192 #2209: Shortcodes in markdown headers
		{"sect/doc5.md", `# {{< b >}}	
## {{% c %}}`,
			filepath.FromSlash("sect/doc5/index.html"), "\n\n<h1 id=\"hugoshortcode-1\">b</h1>\n\n<h2 id=\"hugoshortcode-2\">c</h2>\n"},
		{"sect/doc6.md", "\n```bash\n{{< b >}}\n{{% c %}}\n```\n",
			filepath.FromSlash("sect/doc6/index.html"),
			"<pre><code class=\"language-bash\">b\nc\n</code></pre>\n"},
		// #2249
		{"sect/doc7.ad", `_Shortcodes:_ *b: {{< b >}} c: {{% c %}}*`,
			filepath.FromSlash("sect/doc7/index.html"),
			"<div class=\"paragraph\">\n<p><em>Shortcodes:</em> <strong>b: b c: c</strong></p>\n</div>\n"},
		{"sect/doc8.rst", `**Shortcodes:** *b: {{< b >}} c: {{% c %}}*`,
			filepath.FromSlash("sect/doc8/index.html"),
			"<div class=\"document\">\n\n\n<p><strong>Shortcodes:</strong> <em>b: b c: c</em></p>\n</div>"},
		{"sect/doc9.mmark", `
---
menu:
  main:
    parent: 'parent'
---
**Shortcodes:** *b: {{< b >}} c: {{% c %}}*`,
			filepath.FromSlash("sect/doc9/index.html"),
			"<p><strong>Shortcodes:</strong> <em>b: b c: c</em></p>\n"},
		// Issue #1229: Menus not available in shortcode.
		{"sect/doc10.md", `---
menu:
  main:
    identifier: 'parent'
tags:
- Menu
---
**Menus:** {{< menu >}}`,
			filepath.FromSlash("sect/doc10/index.html"),
			"<p><strong>Menus:</strong> 1</p>\n"},
		// Issue #2323: Taxonomies not available in shortcode.
		{"sect/doc11.md", `---
tags:
- Bugs
---
**Tags:** {{< tags >}}`,
			filepath.FromSlash("sect/doc11/index.html"),
			"<p><strong>Tags:</strong> 2</p>\n"},
	}

	sources := make([]source.ByteSource, len(tests))

	for i, test := range tests {
		sources[i] = source.ByteSource{Name: filepath.FromSlash(test.contentPath), Content: []byte(test.content)}
	}

	s := &Site{
		Source:   &source.InMemorySource{ByteSource: sources},
		targets:  targetList{page: &target.PagePub{UglyURLs: false}},
		Language: helpers.NewDefaultLanguage(),
	}

	addTemplates := func(templ tpl.Template) error {
		templ.AddTemplate("_default/single.html", "{{.Content}}")

		templ.AddInternalShortcode("b.html", `b`)
		templ.AddInternalShortcode("c.html", `c`)
		templ.AddInternalShortcode("d.html", `d`)
		templ.AddInternalShortcode("menu.html", `{{ len (index .Page.Menus "main").Children }}`)
		templ.AddInternalShortcode("tags.html", `{{ len .Page.Site.Taxonomies.tags }}`)

		return nil

	}

	sites, err := newHugoSites(s)

	if err != nil {
		t.Fatalf("Failed to build site: %s", err)
	}

	if err = sites.Build(BuildCfg{withTemplate: addTemplates}); err != nil {
		t.Fatalf("Failed to build site: %s", err)
	}

	for _, test := range tests {
		if strings.HasSuffix(test.contentPath, ".ad") && !helpers.HasAsciidoc() {
			fmt.Println("Skip Asciidoc test case as no Asciidoc present.")
			continue
		} else if strings.HasSuffix(test.contentPath, ".rst") && !helpers.HasRst() {
			fmt.Println("Skip Rst test case as no rst2html present.")
			continue
		}

		file, err := hugofs.Destination().Open(test.outFile)

		if err != nil {
			t.Fatalf("Did not find %s in target: %s", test.outFile, err)
		}

		content := helpers.ReaderToString(file)

		if content != test.expected {
			t.Fatalf("%s content expected:\n%q\ngot:\n%q", test.outFile, test.expected, content)
		}
	}

}

func collectAndSortShortcodes(shortcodes map[string]shortcode) []string {
	var asArray []string

	for key, sc := range shortcodes {
		asArray = append(asArray, fmt.Sprintf("%s:%s", key, sc))
	}

	sort.Strings(asArray)
	return asArray

}

func BenchmarkReplaceShortcodeTokens(b *testing.B) {

	type input struct {
		in           []byte
		replacements map[string]string
		expect       []byte
	}

	data := []struct {
		input        string
		replacements map[string]string
		expect       []byte
	}{
		{"Hello {-{-HUGOSHORTCODE-1-}-}.", map[string]string{"{-{-HUGOSHORTCODE-1-}-}": "World"}, []byte("Hello World.")},
		{strings.Repeat("A", 100) + " {-{-HUGOSHORTCODE-1-}-}.", map[string]string{"{-{-HUGOSHORTCODE-1-}-}": "Hello World"}, []byte(strings.Repeat("A", 100) + " Hello World.")},
		{strings.Repeat("A", 500) + " {-{-HUGOSHORTCODE-1-}-}.", map[string]string{"{-{-HUGOSHORTCODE-1-}-}": "Hello World"}, []byte(strings.Repeat("A", 500) + " Hello World.")},
		{strings.Repeat("ABCD ", 500) + " {-{-HUGOSHORTCODE-1-}-}.", map[string]string{"{-{-HUGOSHORTCODE-1-}-}": "Hello World"}, []byte(strings.Repeat("ABCD ", 500) + " Hello World.")},
		{strings.Repeat("A ", 3000) + " {-{-HUGOSHORTCODE-1-}-}." + strings.Repeat("BC ", 1000) + " {-{-HUGOSHORTCODE-1-}-}.", map[string]string{"{-{-HUGOSHORTCODE-1-}-}": "Hello World"}, []byte(strings.Repeat("A ", 3000) + " Hello World." + strings.Repeat("BC ", 1000) + " Hello World.")},
	}

	var in = make([]input, b.N*len(data))
	var cnt = 0
	for i := 0; i < b.N; i++ {
		for _, this := range data {
			in[cnt] = input{[]byte(this.input), this.replacements, this.expect}
			cnt++
		}
	}

	b.ResetTimer()
	cnt = 0
	for i := 0; i < b.N; i++ {
		for j := range data {
			currIn := in[cnt]
			cnt++
			results, err := replaceShortcodeTokens(currIn.in, "HUGOSHORTCODE", currIn.replacements)

			if err != nil {
				b.Fatalf("[%d] failed: %s", i, err)
				continue
			}
			if len(results) != len(currIn.expect) {
				b.Fatalf("[%d] replaceShortcodeTokens, got \n%q but expected \n%q", j, results, currIn.expect)
			}

		}

	}
}

func TestReplaceShortcodeTokens(t *testing.T) {
	for i, this := range []struct {
		input        string
		prefix       string
		replacements map[string]string
		expect       interface{}
	}{
		{"Hello {-{-PREFIX-1-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "Hello World."},
		{"Hello {-{-PREFIX-1@}@.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, false},
		{"{-{-PREFIX2-1-}-}", "PREFIX2", map[string]string{"{-{-PREFIX2-1-}-}": "World"}, "World"},
		{"Hello World!", "PREFIX2", map[string]string{}, "Hello World!"},
		{"!{-{-PREFIX-1-}-}", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "!World"},
		{"{-{-PREFIX-1-}-}!", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "World!"},
		{"!{-{-PREFIX-1-}-}!", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "!World!"},
		{"_{_PREFIX-1-}-}", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "_{_PREFIX-1-}-}"},
		{"Hello {-{-PREFIX-1-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "To You My Old Friend Who Told Me This Fantastic Story"}, "Hello To You My Old Friend Who Told Me This Fantastic Story."},
		{"A {-{-A-1-}-} asdf {-{-A-2-}-}.", "A", map[string]string{"{-{-A-1-}-}": "v1", "{-{-A-2-}-}": "v2"}, "A v1 asdf v2."},
		{"Hello {-{-PREFIX2-1-}-}. Go {-{-PREFIX2-2-}-}, Go, Go {-{-PREFIX2-3-}-} Go Go!.", "PREFIX2", map[string]string{"{-{-PREFIX2-1-}-}": "Europe", "{-{-PREFIX2-2-}-}": "Jonny", "{-{-PREFIX2-3-}-}": "Johnny"}, "Hello Europe. Go Jonny, Go, Go Johnny Go Go!."},
		{"A {-{-PREFIX-2-}-} {-{-PREFIX-1-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A", "{-{-PREFIX-2-}-}": "B"}, "A B A."},
		{"A {-{-PREFIX-1-}-} {-{-PREFIX-2", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A"}, false},
		{"A {-{-PREFIX-1-}-} but not the second.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A", "{-{-PREFIX-2-}-}": "B"}, "A A but not the second."},
		{"An {-{-PREFIX-1-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A", "{-{-PREFIX-2-}-}": "B"}, "An A."},
		{"An {-{-PREFIX-1-}-} {-{-PREFIX-2-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A", "{-{-PREFIX-2-}-}": "B"}, "An A B."},
		{"A {-{-PREFIX-1-}-} {-{-PREFIX-2-}-} {-{-PREFIX-3-}-} {-{-PREFIX-1-}-} {-{-PREFIX-3-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A", "{-{-PREFIX-2-}-}": "B", "{-{-PREFIX-3-}-}": "C"}, "A A B C A C."},
		{"A {-{-PREFIX-1-}-} {-{-PREFIX-2-}-} {-{-PREFIX-3-}-} {-{-PREFIX-1-}-} {-{-PREFIX-3-}-}.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "A", "{-{-PREFIX-2-}-}": "B", "{-{-PREFIX-3-}-}": "C"}, "A A B C A C."},
		// Issue #1148 remove p-tags 10 =>
		{"Hello <p>{-{-PREFIX-1-}-}</p>. END.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "Hello World. END."},
		{"Hello <p>{-{-PREFIX-1-}-}</p>. <p>{-{-PREFIX-2-}-}</p> END.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World", "{-{-PREFIX-2-}-}": "THE"}, "Hello World. THE END."},
		{"Hello <p>{-{-PREFIX-1-}-}. END</p>.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "Hello <p>World. END</p>."},
		{"<p>Hello {-{-PREFIX-1-}-}</p>. END.", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "<p>Hello World</p>. END."},
		{"Hello <p>{-{-PREFIX-1-}-}12", "PREFIX", map[string]string{"{-{-PREFIX-1-}-}": "World"}, "Hello <p>World12"},
		{"Hello {-{-P-1-}-}. {-{-P-1-}-}-{-{-P-1-}-} {-{-P-1-}-} {-{-P-1-}-} {-{-P-1-}-} END", "P", map[string]string{"{-{-P-1-}-}": strings.Repeat("BC", 100)},
			fmt.Sprintf("Hello %s. %s-%s %s %s %s END",
				strings.Repeat("BC", 100), strings.Repeat("BC", 100), strings.Repeat("BC", 100), strings.Repeat("BC", 100), strings.Repeat("BC", 100), strings.Repeat("BC", 100))},
	} {

		results, err := replaceShortcodeTokens([]byte(this.input), this.prefix, this.replacements)

		if b, ok := this.expect.(bool); ok && !b {
			if err == nil {
				t.Errorf("[%d] replaceShortcodeTokens didn't return an expected error", i)
			}
		} else {
			if err != nil {
				t.Errorf("[%d] failed: %s", i, err)
				continue
			}
			if !reflect.DeepEqual(results, []byte(this.expect.(string))) {
				t.Errorf("[%d] replaceShortcodeTokens, got \n%q but expected \n%q", i, results, this.expect)
			}
		}

	}

}