Merge pull request #1055 from marisaleung/develop

Create a variable model with name, id, and type.

tests/jsunit/index.html

@@ -20,5 +20,6 @@
     <script src="workspace_test.js"></script>
     <script src="xml_test.js"></script>
     <script src="json_test.js"></script>
+    <script src="variable_model_test.js"></script>
   </body>
 </html>

tests/jsunit/variable_model_test.js

@@ -0,0 +1,78 @@
+/**
+ * @license
+ * Blockly Tests
+ *
+ * Copyright 2017 Google Inc.
+ * https://developers.google.com/blockly/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @fileoverview Tests for variable model.
+ * @author marisaleung@google.com (Marisa Leung)
+ */
+'use strict';
+
+var variable;
+
+function variableTest_tearDown() {
+  variable = null;
+}
+
+/**
+ * These tests check the constructor of the variable model.
+ */
+function testInit_Trivial() {
+  variable = new Blockly.VariableModel('test', 'test_type', 'test_id');
+  assertEquals('test', variable.name);
+  assertEquals('test_type', variable.type);
+  assertEquals('test_id', variable.id_);
+  variableTest_tearDown();
+}
+
+function testInit_NullType() {
+  variable = new Blockly.VariableModel('test', null, 'test_id');
+  assertEquals('', variable.type);
+  variableTest_tearDown();
+}
+
+function testInit_UndefinedType() {
+  variable = new Blockly.VariableModel('test', undefined, 'test_id');
+  assertEquals('', variable.type);
+  variableTest_tearDown();
+}
+
+function testInit_NullId() {
+  variable = new Blockly.VariableModel('test', 'test_type', null);
+  assertEquals('test', variable.name);
+  assertEquals('test_type', variable.type);
+  assertNotNull(variable.id_);
+  variableTest_tearDown();
+}
+
+function testInit_UndefinedId() {
+  variable = new Blockly.VariableModel('test', 'test_type', undefined);
+  assertEquals('test', variable.name);
+  assertEquals('test_type', variable.type);
+  assertNotNull(variable.id_);
+  variableTest_tearDown();
+}
+
+function testInit_OnlyNameProvided() {
+  variable = new Blockly.VariableModel('test');
+  assertEquals('test', variable.name);
+  assertEquals('', variable.type);
+  assertNotNull(variable.id_);
+  variableTest_tearDown();
+}