slidewalk/internal/render/render_test.go
2026-07-15 20:14:07 +02:00

133 lines
3.8 KiB
Go

package render
import (
"html/template"
"strings"
"testing"
"slidewalk/internal/parser"
)
func TestRender_OrderAndStructure(t *testing.T) {
page := Page{
Title: "My Deck",
Slides: []parser.Slide{
{Filename: "010-intro.md", Title: "Intro", HTML: template.HTML("<h1>Intro</h1>")},
{Filename: "020-diagram.md", Class: "center", Notes: "remember the punchline", HTML: template.HTML("<h1>Diagram</h1>")},
{Filename: "030-outro.md", HTML: template.HTML("<h1>Outro</h1>")},
},
}
var buf strings.Builder
if err := Render(&buf, page); err != nil {
t.Fatalf("Render() error = %v", err)
}
out := buf.String()
if !strings.Contains(out, "<title>My Deck</title>") {
t.Errorf("output missing document title: %s", out)
}
idxFirst := strings.Index(out, `data-slide="1"`)
idxSecond := strings.Index(out, `data-slide="2"`)
idxThird := strings.Index(out, `data-slide="3"`)
if idxFirst == -1 || idxSecond == -1 || idxThird == -1 {
t.Fatalf("output missing expected data-slide attributes: %s", out)
}
if !(idxFirst < idxSecond && idxSecond < idxThird) {
t.Errorf("slides not in presentation order: %s", out)
}
if !strings.Contains(out, `class="slide center"`) {
t.Errorf("output missing merged slide+custom class: %s", out)
}
if !strings.Contains(out, `<div class="notes">remember the punchline</div>`) {
t.Errorf("output missing rendered notes: %s", out)
}
if strings.Count(out, "<h1>Intro</h1>") != 1 ||
strings.Count(out, "<h1>Diagram</h1>") != 1 ||
strings.Count(out, "<h1>Outro</h1>") != 1 {
t.Errorf("output missing one or more slide bodies: %s", out)
}
if !strings.Contains(out, `<link rel="stylesheet" href="vendor/style.css">`) {
t.Errorf("output missing stylesheet link: %s", out)
}
if !strings.Contains(out, "mermaid.initialize") {
t.Errorf("output missing mermaid.initialize call: %s", out)
}
if !strings.Contains(out, `<script src="vendor/nav.js">`) {
t.Errorf("output missing nav.js script tag: %s", out)
}
}
func TestRender_IncrementalSlideGetsDataAttribute(t *testing.T) {
page := Page{
Slides: []parser.Slide{
{Filename: "010-intro.md", Incremental: true, HTML: template.HTML("<ul><li>A</li></ul>")},
{Filename: "020-outro.md", HTML: template.HTML("<h1>Outro</h1>")},
},
}
var buf strings.Builder
if err := Render(&buf, page); err != nil {
t.Fatalf("Render() error = %v", err)
}
out := buf.String()
if !strings.Contains(out, `data-slide="1" data-incremental="true"`) {
t.Errorf("output missing data-incremental attribute on incremental slide: %s", out)
}
if strings.Contains(out, `data-slide="2" data-incremental`) {
t.Errorf("non-incremental slide should not get data-incremental attribute: %s", out)
}
}
func TestRender_NoNotesOmitsNotesElement(t *testing.T) {
page := Page{
Slides: []parser.Slide{
{Filename: "010-intro.md", HTML: template.HTML("<h1>Intro</h1>")},
},
}
var buf strings.Builder
if err := Render(&buf, page); err != nil {
t.Fatalf("Render() error = %v", err)
}
if strings.Contains(buf.String(), `class="notes"`) {
t.Errorf("output should omit notes element when Notes is empty: %s", buf.String())
}
}
func TestRender_DevReloadScript(t *testing.T) {
tests := []struct {
name string
devReload bool
}{
{name: "omitted for static export", devReload: false},
{name: "included for dev server", devReload: true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
page := Page{
Slides: []parser.Slide{
{Filename: "010-intro.md", HTML: template.HTML("<h1>Intro</h1>")},
},
DevReload: tt.devReload,
}
var buf strings.Builder
if err := Render(&buf, page); err != nil {
t.Fatalf("Render() error = %v", err)
}
got := strings.Contains(buf.String(), `<script src="vendor/live-reload.js">`)
if got != tt.devReload {
t.Errorf("live-reload script present = %v, want %v", got, tt.devReload)
}
})
}
}