Release v1.2.1 (#6)

* tests refactored

* moved test config files

* removed deprecated command

* added missing test case

* updated eslint config

* removed unused function / renamed helper

* added missing test cases

* code enhancement

test/_setup/credentials.json

@@ -0,0 +1,5 @@
+{
+  "email": "<your ewelink email>",
+  "password": "<your ewelink password>",
+  "deviceId": "<your device id>"
+}

test/_setup/expectations.js

@@ -0,0 +1,28 @@
+const loginExpectations = {
+  at: expect.any(String),
+  user: { email: expect.any(String) },
+  region: expect.any(String),
+};
+
+const allDevicesExpectations = {
+  name: expect.any(String),
+  deviceid: expect.any(String),
+  apikey: expect.any(String),
+  params: expect.any(Object),
+  showBrand: expect.any(Boolean),
+  uiid: expect.any(Number),
+};
+
+const specificDeviceExpectations = {
+  name: expect.any(String),
+  deviceid: expect.any(String),
+  apikey: expect.any(String),
+  online: expect.any(Boolean),
+  uiid: expect.any(Number),
+};
+
+module.exports = {
+  loginExpectations,
+  allDevicesExpectations,
+  specificDeviceExpectations,
+};