yii composer install

tests/codeception/unit/models/LoginFormTest.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace tests\codeception\unit\models;
+
+use Yii;
+use yii\codeception\TestCase;
+use app\models\LoginForm;
+use Codeception\Specify;
+
+class LoginFormTest extends TestCase
+{
+    use Specify;
+
+    protected function tearDown()
+    {
+        Yii::$app->user->logout();
+        parent::tearDown();
+    }
+
+    public function testLoginNoUser()
+    {
+        $model = new LoginForm([
+            'username' => 'not_existing_username',
+            'password' => 'not_existing_password',
+        ]);
+
+        $this->specify('user should not be able to login, when there is no identity', function () use ($model) {
+            expect('model should not login user', $model->login())->false();
+            expect('user should not be logged in', Yii::$app->user->isGuest)->true();
+        });
+    }
+
+    public function testLoginWrongPassword()
+    {
+        $model = new LoginForm([
+            'username' => 'demo',
+            'password' => 'wrong_password',
+        ]);
+
+        $this->specify('user should not be able to login with wrong password', function () use ($model) {
+            expect('model should not login user', $model->login())->false();
+            expect('error message should be set', $model->errors)->hasKey('password');
+            expect('user should not be logged in', Yii::$app->user->isGuest)->true();
+        });
+    }
+
+    public function testLoginCorrect()
+    {
+        $model = new LoginForm([
+            'username' => 'demo',
+            'password' => 'demo',
+        ]);
+
+        $this->specify('user should be able to login with correct credentials', function () use ($model) {
+            expect('model should login user', $model->login())->true();
+            expect('error message should not be set', $model->errors)->hasntKey('password');
+            expect('user should be logged in', Yii::$app->user->isGuest)->false();
+        });
+    }
+
+}