chore: relocate unit test (#39)

add new json snapshot serializer

test/unit/components/store/login.js

@@ -0,0 +1,21 @@
+import {API_ERROR} from '../../../../src/lib/constants';
+/**
+ * API mock for login endpoint
+ * @param {object}  config configuration of api call
+ * @returns {promise}
+ */
+export default function(config) {
+  return new Promise((resolve, reject) => {
+    const body = JSON.parse(config.body);
+    if (body.username === 'sam' && body.password === '1234') {
+        resolve({
+          username: 'sam',
+          token: 'TEST_TOKEN'
+        });
+    } else {
+      reject({
+          error: API_ERROR.BAD_USERNAME_PASSWORD
+      });
+    }
+  });
+}