added phpunit and composer stuff

.phpunit.result.cache

@@ -0,0 +1 @@
+C:37:"PHPUnit\Runner\DefaultTestResultCache":508:{a:2:{s:7:"defects";a:4:{s:47:"TestUser::testCanBeCreatedFromValidEmailAddress";i:4;s:48:"TestEmail::testCanBeCreatedFromValidEmailAddress";i:4;s:53:"TestEmail::testCannotBeCreatedFromInvalidEmailAddress";i:4;s:32:"TestEmail::testCanBeUsedAsString";i:4;}s:5:"times";a:4:{s:48:"TestEmail::testCanBeCreatedFromValidEmailAddress";d:0.005;s:53:"TestEmail::testCannotBeCreatedFromInvalidEmailAddress";d:0.001;s:32:"TestEmail::testCanBeUsedAsString";d:0;s:47:"TestUser::testCanBeCreatedFromValidEmailAddress";d:0;}}}

composer.json

@@ -0,0 +1,10 @@
+{
+    "autoload": {
+        "classmap": [
+            "dev_mvc/"
+        ]
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^8"
+    }
+}

dev_mvc/.phpunit.result.cache

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+C:30:"PHPUnit\Runner\TestResultCache":44:{a:2:{s:7:"defects";a:0:{}s:5:"times";a:0:{}}}

dev_mvc/model/forum/Email.php

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+<?php
+namespace model\forum;
+class Email{
+    private $email;
+    private $valid;
+    function __construct($email){
+        $sanitized_email = filter_var($email, FILTER_SANITIZE_EMAIL);
+        
+        if(filter_var($sanitized_email, FILTER_VALIDATE_EMAIL)){
+            $this->email = $sanitized_email;
+            $this->valid = true;
+        }
+        else{
+            $this->email = 'invalid';
+            $this->valid = false;
+        }
+    }
+    public function getEmail(){
+        return $this->email;
+    }
+    public function getValid(){
+        return $this->valid;
+    }
+    public function __toString(): string
+    {
+        return $this->email;
+    }
+}

phpunit.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<phpunit bootstrap="vendor\autoload.php">
+    <testsuites>
+        <testsuite name="unit">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>
+ 

tests/unit/Test.php

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+<?php
+include_once 'TestEmail.php';
+include_once 'TestUser.php';

tests/unit/TestEmail.php

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+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+use model\forum\Email;
+final class TestEmail extends TestCase
+{
+    public function testCanBeCreatedFromValidEmailAddress(): void
+    {
+        $this->assertInstanceOf(
+            Email::class,
+            new Email('user@example.com')
+        );
+    }
+
+    public function testCannotBeCreatedFromInvalidEmailAddress(): void
+    {
+        $email = new Email('user');
+        $this->assertFalse($email->getValid());
+        $this->assertEquals($email->getEmail(), 'invalid');
+    }
+
+    public function testCanBeUsedAsString(): void
+    {
+        $this->assertEquals(
+            'user@example.com',
+            new Email('user@example.com')
+        );
+    }
+}

tests/unit/TestUser.php

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+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+use model\forum\User;
+
+final class TestUser extends TestCase
+{
+    public function testCanBeCreatedFromValidEmailAddress(): void
+    {
+        $this->assertInstanceOf(
+            User::class,
+            new User(1, 'andreas', 'andreas@example.com', 'password', '10-04-2019 12:00:00', '10-04-2019 12:00:00', '94.212.253.51', -1, 1)
+        );
+    }
+}