Add unit tests for Todos

hydro.conf.js

@@ -37,14 +37,16 @@ module.exports = function(hydro) {
     formatter: 'hydro-doc',
     chai: {
       styles: 'should',
-      stack: true
+      stack: true,
+      plugins: ['jack-chai'],
     },
     globals: {
       cli: cli,
     },
     plugins: [
       'hydro-bdd',
-      'hydro-chai'
+      'hydro-chai',
+      'hydro-jack',
     ],
     tests: [
       'test/*.js',

package.json

@@ -12,10 +12,13 @@
     "chai": "*",
     "nixt": "*",
     "istanbul": "~0.2.3",
+    "jack": "git://github.com/jackjs/jack.git#master",
+    "jack-chai": "~0.1.0",
     "hydro": "*",
     "hydro-doc": "0.0.2",
     "hydro-bdd": "~0.1.0",
-    "hydro-chai": "~0.1.3"
+    "hydro-chai": "~0.1.3",
+    "hydro-jack": "0.0.1"
   },
   "repository": {
     "type": "git",

test/todos.js

@@ -0,0 +1,103 @@
+var Todos = require('../lib/todos');
+var Todo = require('../lib/todo');
+
+var storage = { read: function() { return []; } };
+var pending = { id: 1, status: 'pending', desc: 'desc', };
+var completed = { id: 2, status: 'done', desc: 'desc' };
+var data = [ pending, completed ];
+
+describe(Todos, function() {
+  describe('#list', function() {
+    it('lists todo items with given status', function() {
+      jack(storage, 'read', function() { return data; });
+
+      var todos = new Todos(storage);
+      var items = todos.list('pending');
+
+      items.should.have.lengthOf(1);
+      items[0].id.should.eq(pending.id);
+    });
+  });
+
+  describe('#create', function() {
+    it('creates a new todo item', function() {
+      var todos = new Todos(storage);
+      jack(storage, 'write');
+
+      todos.create('desc');
+      storage.write.should.have.been.called.with.args([ new Todo(1, 'desc') ]);
+    });
+  });
+
+  describe('#check', function() {
+    it('completes todo items and persists them', function() {
+      var todos = new Todos(storage);
+
+      jack(storage, 'write');
+      jack(storage, 'read', function() { return [pending]; });
+
+      todos.check(pending.id);
+      storage.write.should.have.been.called.with.args([ new Todo(1, 'desc', 'done') ]);
+    });
+
+    it('errors when it cannot find the given todo item', function() {
+      var todos = new Todos(storage);
+      jack(storage, 'read', function() { return [pending]; });
+
+      should.throw(function() {
+        todos.check(completed.id);
+      });
+    });
+  });
+
+  describe('#undo', function() {
+    it('undoes todo items and persists them', function() {
+      var todos = new Todos(storage);
+
+      jack(storage, 'write');
+      jack(storage, 'read', function() { return [ completed ]; });
+
+      todos.undo(completed.id);
+      storage.write.should.have.been.called.with.args([ new Todo(2, 'desc', 'pending') ]);
+    });
+
+    it('errors when it cannot find the given todo item', function() {
+      var todos = new Todos(storage);
+      jack(storage, 'read', function() { return [ completed ]; });
+
+      should.throw(function() {
+        todos.undo(pending.id);
+      });
+    });
+  });
+
+  describe('#destroy', function() {
+    it('undoes todo items and persists them', function() {
+      var todos = new Todos(storage);
+
+      jack(storage, 'write');
+      jack(storage, 'read', function() { return [ pending, completed ]; });
+
+      todos.destroy(completed.id);
+      storage.write.should.have.been.called.with.args([ new Todo(1, 'desc', 'pending') ]);
+    });
+
+    it('errors when it cannot find the given todo item', function() {
+      var todos = new Todos(storage);
+      jack(storage, 'read', function() { return [ completed ]; });
+
+      should.throw(function() {
+        todos.destroy(pending.id);
+      });
+    });
+  });
+
+  describe('#clear', function() {
+    it('persists a blank todo list', function() {
+      var todos = new Todos(storage);
+      jack(storage, 'write');
+      todos.clear();
+      storage.write.should.have.been.called.with.args([]);
+    });
+  });
+});