[Extension API Extern Generation] Auto-generate enums

tools/json_schema_compiler/js_externs_generator_test.py

+#!/usr/bin/env python
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import idl_schema
+from js_externs_generator import JsExternsGenerator
+from datetime import datetime
+import model
+import unittest
+
+
+# The contents of a fake idl file.
+fake_idl = """
+// Copyright %s The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// A totally fake API.
+namespace fakeApi {
+  enum Greek {
+    ALPHA,
+    BETA,
+    GAMMA,
+    DELTA
+  };
+
+  dictionary Bar {
+    long num;
+  };
+
+  dictionary Baz {
+    DOMString str;
+    long num;
+    boolean b;
+    Greek letter;
+    long[] arr;
+    Bar obj;
+    long? maybe;
+  };
+
+  callback VoidCallback = void();
+
+  interface Functions {
+    // Does something exciting!
+    // |baz| : The baz to use.
+    static void doSomething(Baz baz, optional VoidCallback callback);
+  };
+};
+"""
+
+# The output we expect from our fake idl file.
+expected_output = """// Copyright %s The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/** @fileoverview Externs generated from namespace: fakeApi */
+
+/**
+ * @const
+ */
+chrome.fakeApi = {};
+
+/**
+ * @enum {string}
+ */
+chrome.fakeApi.Greek = {
+  ALPHA: 'ALPHA',
+  BETA: 'BETA',
+  GAMMA: 'GAMMA',
+  DELTA: 'DELTA',
+};
+
+/**
+ * @typedef {{
+ *   num: number
+ * }}
+ */
+var Bar;
+
+/**
+ * @typedef {{
+ *   str: string,
+ *   num: number,
+ *   b: boolean,
+ *   letter: chrome.fakeApi.Greek,
+ *   arr: Array,
+ *   obj: Bar,
+ *   maybe: (number|undefined)
+ * }}
+ */
+var Baz;
+
+/**
+ * Does something exciting!
+ * @param {Baz} baz The baz to use.
+ * @param {Function=} callback
+ */
+chrome.fakeApi.doSomething = function(baz, callback) {};
+""" % datetime.now().year
+
+
+class JsExternGeneratorTest(unittest.TestCase):
+  def testBasic(self):
+    filename = 'fake_api.idl'
+    api_def = idl_schema.Process(fake_idl, filename)
+    m = model.Model()
+    namespace = m.AddNamespace(api_def[0], filename)
+    self.assertEquals(expected_output,
+                      JsExternsGenerator().Generate(namespace).Render())
+
+
+if __name__ == '__main__':
+  unittest.main()