Add a test for https://github.com/Polymer/tools/issues/335, skipped for now.

packages/esm-amd-loader/test/src/suite.ts

@@ -38,6 +38,7 @@ const define = window.define;
 interface Window {
   executed: {[url: string]: true};
   checkExecuted: (key: string) => void;
+  executionOrder: string[];
 }
 
 window.checkExecuted = (key) => {
@@ -253,3 +254,16 @@ suite('meta.url', () => {
     });
   });
 });
+
+// Test for https://github.com/Polymer/tools/issues/335
+suite.skip('dependency ordering', () => {
+  setup(() => {
+    window.executionOrder = []; // only used by these tests.
+  });
+  test('all else being equal, dependencies execute in import order', (done) => {
+    define(['../race/start.js'], () => {
+      assert.deepEqual(window.executionOrder, ['baz', 'foo', 'bar', 'start']);
+      done();
+    });
+  });
+});

packages/esm-amd-loader/test/static/race/bar.js

@@ -0,0 +1,3 @@
+define([], function() {
+  window.executionOrder.push('bar');
+});

packages/esm-amd-loader/test/static/race/baz.js

@@ -0,0 +1,3 @@
+define([], function() {
+  window.executionOrder.push('baz');
+});

packages/esm-amd-loader/test/static/race/foo.js

@@ -0,0 +1,3 @@
+define(['./baz.js'], function(baz) {
+  window.executionOrder.push('foo');
+});

packages/esm-amd-loader/test/static/race/start.js

@@ -0,0 +1,4 @@
+
+define(['./foo.js', './bar.js'], function(foo, bar, baz) {
+  window.executionOrder.push('start');
+});