Add wait function for async testing

package.json

@@ -1,6 +1,6 @@
 {
   "name": "legit-tests",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "description": "a chainable testing library for React",
   "main": "legit-tests.js",
   "scripts": {

src/alt/store.js

@@ -6,6 +6,14 @@ class TestStore {
     this.actions = actions
   }
 
+  wait(callback, duration = 0) {
+    setTimeout(() => {
+      callback.call(this, this.store)
+    }, duration)
+
+    return this
+  }
+
   test(callback) {
     callback.call(this, this.store)
     return this

tests/store.jsx

@@ -40,4 +40,16 @@ describe('TestStore', () => {
       })
     })
   })
+
+  describe('wait', () => {
+    it('should wait for the method to finish before running tests', (done) => {
+      TestStore(MyStore, MyActions)
+      .setInitialState({ todos: todos })
+      .addTodo({ title: "Get Beer", complete: false })
+      .wait(({ state }) => {
+        expect(state.todos).to.eql(expected)
+        done()
+      }, 100)
+    })
+  })
 })