Add tests

Author: muan

karma.config.js

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+module.exports = function(config) {
+  config.set({
+    frameworks: ['mocha', 'chai'],
+    files: [{pattern: 'dist/index.esm.js', type: 'module'}, {pattern: 'test/test.js', type: 'module'}],
+    reporters: ['mocha'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    browsers: ['ChromeHeadless'],
+    autoWatch: false,
+    singleRun: true,
+    concurrency: Infinity
+  })
+}

test/.eslintrc.json

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+{
+  "rules": {
+    "flowtype/require-valid-file-annotation": "off"
+  },
+  "env": {
+    "mocha": true
+  },
+  "globals": {
+    "assert": true
+  },
+  "extends": "../.eslintrc.json"
+}

test/test.js

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+import subscribe from '../dist/index.esm.js'
+
+describe('paste-markdown', function() {
+  describe('with quotable selection', function() {
+    let subscription, textarea
+    beforeEach(function() {
+      document.body.innerHTML = `
+        <textarea data-paste-markdown></textarea>
+      `
+
+      textarea = document.querySelector('textarea[data-paste-markdown]')
+      subscription = subscribe(textarea)
+    })
+
+    afterEach(function() {
+      subscription.unsubscribe()
+      document.body.innerHTML = ''
+    })
+
+    it('pastes image uris as markdown', function() {
+      paste(textarea, {'text/uri-list': 'https://github.com/github.png\r\nhttps://github.com/hubot.png'})
+      assert.include(textarea.value, '![](https://github.com/github.png)\n\n![](https://github.com/hubot.png)')
+    })
+
+    it('pastes gfm into markdown', function() {
+      paste(textarea, {'text/plain': 'hello', 'text/x-gfm': '# hello'})
+      assert.include(textarea.value, '# hello')
+    })
+
+    it('pastes html tables as markdown', function() {
+      const data = {
+        'text/html': `
+        <table>
+          <thead><tr><th>name</th><th>origin</th></tr></thead>
+          <tbody>
+            <tr><td>hubot</td><td>github</td></tr>
+            <tr><td>bender</td><td>futurama</td></tr>
+          </tbody>
+        </table>
+        `
+      }
+      paste(textarea, data)
+      assert.include(textarea.value, 'name | origin\n-- | --\nhubot | github\nbender | futurama')
+    })
+
+    it('does not paste excluded content as markdown', function() {
+      const data = {
+        'text/html': `
+        <table class="js-comment">
+          <thead><tr><th>name</th><th>origin</th></tr></thead>
+          <tbody>
+            <tr><td>hubot</td><td>github</td></tr>
+            <tr><td>bender</td><td>futurama</td></tr>
+          </tbody>
+        </table>
+        `
+      }
+      paste(textarea, data)
+      assert.equal(textarea.value, '')
+    })
+  })
+})
+
+function paste(textarea, data) {
+  const dataTransfer = new DataTransfer()
+  for (const key in data) {
+    dataTransfer.setData(key, data[key])
+  }
+  const event = new ClipboardEvent('paste', {
+    clipboardData: dataTransfer
+  })
+  textarea.dispatchEvent(event)
+}