package main

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestExpandPermalinkPattern(t *testing.T) {
	var (
		d    = VariableMap{}
		path = "/a/b/base.html"
	)

	t.Run(":output_ext", func(t *testing.T) {
		p, _ := expandPermalinkPattern("/base:output_ext", path, d)
		assert.Equal(t, "/base.html", p)
	})
	t.Run(":output_ext renames markdown to .html", func(t *testing.T) {
		p, _ := expandPermalinkPattern("/base:output_ext", "/a/b/base.md", d)
		assert.Equal(t, "/base.html", p)
		p, _ = expandPermalinkPattern("/base:output_ext", "/a/b/base.markdown", d)
		assert.Equal(t, "/base.html", p)
	})
	t.Run(":name", func(t *testing.T) {
		p, _ := expandPermalinkPattern("/name/:name", path, d)
		assert.Equal(t, "/name/base", p)
	})
	t.Run(":path", func(t *testing.T) {
		p, _ := expandPermalinkPattern("/prefix:path/post", path, d)
		assert.Equal(t, "/prefix/a/b/base.html/post", p)
	})
	t.Run(":title", func(t *testing.T) {
		p, _ := expandPermalinkPattern("/title/:title.html", path, d)
		assert.Equal(t, "/title/base.html", p)
	})
	t.Run("invalid template variable", func(t *testing.T) {
		_, err := expandPermalinkPattern("/:invalid", path, d)
		assert.Error(t, err)
	})

	d["collection"] = "c"
	path = "/_c/a/b/c.d"
	t.Run(":path", func(t *testing.T) {
		p, _ := expandPermalinkPattern("/prefix:path/post", path, d)
		assert.Equal(t, "/prefix/a/b/c.d/post", p)
	})
}