chore(plugin-buttons): Added (esm) unit tests. See #408

packages/plugin-buttons/tests/plugin.test.mjs

@@ -0,0 +1,17 @@
+import chai from 'chai'
+import freesewing from '@freesewing/core'
+import plugin from '../dist/index.mjs'
+
+const expect = chai.expect
+
+const pattern = new freesewing.Pattern().use(plugin)
+pattern.draft().render()
+
+describe('Buttons Plugin Test', () => {
+  for (const snippet of ['button', 'buttonhole', 'snap-stud', 'snap-socket']) {
+    it(`Should add the ${snippet} snippet to defs`, () => {
+      expect(pattern.svg.defs.indexOf(`<g id="${snippet}">`)).to.not.equal(-1)
+    })
+  }
+})
+