chore: import upstream snapshot with attribution

static/js/tests/node/.eslintrc.json

@@ -0,0 +1,14 @@
+{
+    "parserOptions": {
+        "ecmaVersion": 6
+    },
+    "env": {
+        "browser": false,
+        "mocha": true
+    },
+    "globals": {
+        "console": true,
+        "require": true
+    },
+    "extends": "../../.eslintrc.json"
+}

static/js/tests/node/.mocharc.js

@@ -0,0 +1,6 @@
+'use strict';
+
+module.exports = {
+  ui: 'tdd',
+  reporter: 'landing'
+};

static/js/tests/node/run_node_test.js

@@ -0,0 +1,57 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @fileoverview Mocha tests that test Blockly in Node.
+ */
+
+var assert = require('chai').assert;
+var Blockly = require('../../dist/');
+
+var xmlText = '<xml xmlns="https://developers.google.com/blockly/xml">\n' +
+'  <block type="text_print" x="37" y="63">\n' +
+'    <value name="TEXT">\n' +
+'      <shadow type="text">\n' +
+'        <field name="TEXT">Hello from Blockly!</field>\n' +
+'      </shadow>\n' +
+'    </value>\n' +
+'  </block>\n' +
+'</xml>';
+
+suite('Test Node.js', function() {
+  test('Import XML', function() {
+    var xml = Blockly.Xml.textToDom(xmlText);
+
+    // Create workspace and import the XML
+    var workspace = new Blockly.Workspace();
+    Blockly.Xml.domToWorkspace(xml, workspace);
+  });
+  test('Roundtrip XML', function() {
+    var xml = Blockly.Xml.textToDom(xmlText);
+
+    var workspace = new Blockly.Workspace();
+    Blockly.Xml.domToWorkspace(xml, workspace);
+
+    var headlessXml = Blockly.Xml.workspaceToDom(workspace, true);
+    var headlessText = Blockly.Xml.domToPrettyText(headlessXml);
+
+    assert.equal(headlessText, xmlText, 'equal');
+  });
+  test('Generate Code', function() {
+    var xml = Blockly.Xml.textToDom(xmlText);
+
+    // Create workspace and import the XML
+    var workspace = new Blockly.Workspace();
+    Blockly.Xml.domToWorkspace(xml, workspace);
+
+    // Convert code
+    var code = Blockly.JavaScript.workspaceToCode(workspace);
+    
+    // Check output
+    assert.equal('window.alert(\'Hello from Blockly!\');', code.trim(), 'equal');
+  });
+});
+