add tests for unist-util-select compat, property names

test/parse.js

@@ -1,5 +1,7 @@
 const fse = require('fs-extra')
 const path = require('path')
+const remove = require('unist-util-remove')
+const select = require('unist-util-select')
 const test = require('ava')
 const {parse, parseFile, stringify} = require('..')
 
@@ -70,3 +72,25 @@ test('it remembers the source path', t => {
             'tree.source.path is enumerable')
   })
 })
+
+test('it creates a tree that works with unist-util-select', t => {
+  const tree = parse(`
+    $color: red;
+    a {
+      color: $color;
+    }
+  `)
+
+  remove(tree, 'space')
+  t.is(select(tree, 'stylesheet')[0], tree)
+  const firstVariable = tree.children[0].children[0].children[0]
+  t.is(select(tree, 'declaration variable')[0], firstVariable)
+})
+
+test('it adds names to property nodes', t => {
+  const tree = parse('a { color: green; }', {syntax: 'css'})
+  const [property] = select(tree, 'property')
+  t.is(property.name, 'color', 'property lacks name "color"')
+  const selected = select(tree, 'property[name=color]')
+  t.deepEqual(selected, [property])
+})