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// Copyright 2019 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 highlight provides code highlighting.
package highlight
import (
"testing"
qt "github.com/frankban/quicktest"
)
func TestHighlight(t *testing.T) {
c := qt.New(t)
lines := `LINE1
LINE2
LINE3
LINE4
LINE5
`
coalesceNeeded := `GET /foo HTTP/1.1
Content-Type: application/json
User-Agent: foo
{
"hello": "world"
}`
c.Run("Basic", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
h := New(cfg)
result, _ := h.Highlight(`echo "Hugo Rocks!"`, "bash", "")
c.Assert(result, qt.Equals, `<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-bash" data-lang="bash"><span class="line"><span class="cl"><span class="nb">echo</span> <span class="s2">"Hugo Rocks!"</span></span></span></code></pre></div>`)
result, _ = h.Highlight(`echo "Hugo Rocks!"`, "unknown", "")
c.Assert(result, qt.Equals, `<pre tabindex="0"><code class="language-unknown" data-lang="unknown">echo "Hugo Rocks!"</code></pre>`)
})
c.Run("Highlight lines, default config", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
h := New(cfg)
result, _ := h.Highlight(lines, "bash", "linenos=table,hl_lines=2 4-5,linenostart=3")
c.Assert(result, qt.Contains, "<div class=\"highlight\"><div class=\"chroma\">\n<table class=\"lntable\"><tr><td class=\"lntd\">\n<pre tabindex=\"0\" class=\"chroma\"><code><span class")
c.Assert(result, qt.Contains, "<span class=\"hl\"><span class=\"lnt\">4")
result, _ = h.Highlight(lines, "bash", "linenos=inline,hl_lines=2")
c.Assert(result, qt.Contains, "<span class=\"ln\">2</span><span class=\"cl\">LINE2\n</span></span>")
c.Assert(result, qt.Not(qt.Contains), "<table")
result, _ = h.Highlight(lines, "bash", "linenos=true,hl_lines=2")
c.Assert(result, qt.Contains, "<table")
c.Assert(result, qt.Contains, "<span class=\"hl\"><span class=\"lnt\">2\n</span>")
})
c.Run("Highlight lines, linenumbers default on", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
cfg.LineNos = true
h := New(cfg)
result, _ := h.Highlight(lines, "bash", "")
c.Assert(result, qt.Contains, "<span class=\"lnt\">2\n</span>")
result, _ = h.Highlight(lines, "bash", "linenos=false,hl_lines=2")
c.Assert(result, qt.Not(qt.Contains), "class=\"lnt\"")
})
c.Run("Highlight lines, linenumbers default on, anchorlinenumbers default on", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
cfg.LineNos = true
cfg.AnchorLineNos = true
h := New(cfg)
result, _ := h.Highlight(lines, "bash", "")
c.Assert(result, qt.Contains, "<span class=\"lnt\" id=\"2\"><a class=\"lnlinks\" href=\"#2\">2</a>\n</span>")
result, _ = h.Highlight(lines, "bash", "anchorlinenos=false,hl_lines=2")
c.Assert(result, qt.Not(qt.Contains), "id=\"2\"")
})
c.Run("Highlight lines, linenumbers default on, linenumbers in table default off", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
cfg.LineNos = true
cfg.LineNumbersInTable = false
h := New(cfg)
result, _ := h.Highlight(lines, "bash", "")
c.Assert(result, qt.Contains, "<span class=\"cl\">LINE2\n</span></span>")
result, _ = h.Highlight(lines, "bash", "linenos=table")
c.Assert(result, qt.Contains, "<span class=\"lnt\">1\n</span>")
})
c.Run("No language", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
cfg.LineNos = true
h := New(cfg)
result, _ := h.Highlight(lines, "", "")
c.Assert(result, qt.Equals, "<pre tabindex=\"0\"><code>LINE1\nLINE2\nLINE3\nLINE4\nLINE5\n</code></pre>")
})
c.Run("No language, guess syntax", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
cfg.GuessSyntax = true
cfg.LineNos = true
cfg.LineNumbersInTable = false
h := New(cfg)
result, _ := h.Highlight(lines, "", "")
c.Assert(result, qt.Contains, "<span class=\"cl\">LINE2\n</span></span>")
})
c.Run("No language, Escape HTML string", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
h := New(cfg)
result, _ := h.Highlight("Escaping less-than in code block? <fail>", "", "")
c.Assert(result, qt.Contains, "<fail>")
})
c.Run("Highlight lines, default config", func(c *qt.C) {
cfg := DefaultConfig
cfg.NoClasses = false
h := New(cfg)
result, _ := h.Highlight(coalesceNeeded, "http", "linenos=true,hl_lines=2")
c.Assert(result, qt.Contains, "hello")
c.Assert(result, qt.Contains, "}")
})
}
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