Add unit tests for stream_data.js.

(imported from commit 9a91aea1db3afc7936b1dbaeb4c014a3df6cd633)

zerver/tests/frontend/node/stream_data.js

@@ -0,0 +1,39 @@
+var assert = require('assert');
+global._ = require('third/underscore/underscore.js');
+global.util = require('js/util.js');
+global.Dict = require('js/dict.js');
+var stream_data = require('js/stream_data.js');
+
+(function test_basics() {
+    var denmark = {
+        subscribed: false,
+        color: 'blue',
+        name: 'Denmark',
+        in_home_view: false
+    };
+    var social = {
+        subscribed: true,
+        color: 'red',
+        name: 'social',
+        in_home_view: true,
+        invite_only: true
+    };
+    stream_data.add_sub('Denmark', denmark);
+    stream_data.add_sub('social', social);
+
+    assert.equal(stream_data.get_sub('denmark'), denmark);
+    assert.equal(stream_data.get_sub('Social'), social);
+
+    assert.deepEqual(stream_data.subscribed_streams(), ['social']);
+    assert.deepEqual(stream_data.get_colors(), ['red']);
+
+    assert(stream_data.all_subscribed_streams_are_in_home_view());
+
+    assert(stream_data.is_subscribed('social'));
+    assert(stream_data.is_subscribed('Social'));
+    assert(!stream_data.is_subscribed('Denmark'));
+    assert(!stream_data.is_subscribed('Rome'));
+
+    assert(stream_data.get_invite_only('social'));
+    assert.equal(stream_data.get_color('social'), 'red');
+}());