test: initialize e2e-testing with login page (#698)

Fixes: #697

e2e/src/login/login.po.ts

@@ -0,0 +1,41 @@
+/** Protractor Imports */
+import { browser, element, by } from 'protractor';
+
+/**
+ * Login Page e2e page object
+ */
+export class LoginPage {
+
+  /** username field */
+  usernameField = element(by.css('input[formControlName="username"]'));
+  /** password field */
+  passwordField = element(by.css('input[formControlName="password"]'));
+  /** login button */
+  loginButton = element(by.cssContainingText('.login-button', 'Login'));
+
+  /** Forces default language */
+  constructor() {
+    this.navigateTo();
+    browser.executeScript(() => localStorage.setItem('language', 'en-US'));
+  }
+
+  /** Navigate to specified url */
+  navigateTo() {
+    return browser.get('/');
+  }
+
+  /** Login with correct credentials */
+  validLogin() {
+    this.usernameField.sendKeys('mifos');
+    this.passwordField.sendKeys('password');
+    this.loginButton.click();
+  }
+
+  /** Login with incorrect credentials */
+  invalidLogin() {
+    this.usernameField.sendKeys('test');
+    this.passwordField.sendKeys('123');
+    this.loginButton.click();
+  }
+
+}