Refactor: Move Topic Details into better objects, identity map, tests, query string filters

test/javascripts/models/topic_test.js

@@ -0,0 +1,39 @@
+module("Discourse.Topic");
+
+test('has details', function() {
+  var topic = Discourse.Topic.create({id: 1234});
+  var topicDetails = topic.get('details');
+  present(topicDetails, "a topic has topicDetails after we create it");
+  equal(topicDetails.get('topic'), topic, "the topicDetails has a reference back to the topic");
+});
+
+test('has a postStream', function() {
+  var topic = Discourse.Topic.create({id: 1234});
+  var postStream = topic.get('postStream');
+  present(postStream, "a topic has a postStream after we create it");
+  equal(postStream.get('topic'), topic, "the postStream has a reference back to the topic");
+});
+
+var category = _.first(Discourse.Category.list());
+
+test('category relationship', function() {
+  // It finds the category by id
+  var topic = Discourse.Topic.create({id: 1111, category_id: category.get('id') });
+  equal(topic.get('category'), category);
+});
+
+test("updateFromJson", function() {
+  var topic = Discourse.Topic.create({id: 1234});
+
+  topic.updateFromJson({
+    post_stream: [1,2,3],
+    details: {hello: 'world'},
+    cool: 'property',
+    category_id: category.get('id')
+  });
+
+  blank(topic.get('post_stream'), "it does not update post_stream");
+  equal(topic.get('details.hello'), 'world', 'it updates the details');
+  equal(topic.get('cool'), "property", "it updates other properties");
+  equal(topic.get('category'), category);
+});