add basic api tests

test/Providers/ChatProviderTest.php

@@ -0,0 +1,39 @@
+<?php declare(strict_types = 1);
+
+namespace Demostf\API\Test\Providers;
+
+use Demostf\API\Demo\ChatMessage;
+use Demostf\API\Providers\ChatProvider;
+use Demostf\API\Test\TestCase;
+
+class ChatProviderTest extends TestCase {
+	/** @var ChatProvider */
+	private $provider;
+
+	public function setUp() {
+		parent::setUp();
+
+		$this->provider = new ChatProvider($this->getDatabaseConnection());
+	}
+
+	public function testGetEmptyChat() {
+		$this->assertCount(0, $this->provider->getChat(1));
+	}
+
+	public function testStoreRetrieve() {
+		$message1 = new ChatMessage('foo', 2, 'bar');
+		$message2 = new ChatMessage('foo2', 2, 'bar2');
+		$message3 = new ChatMessage('foo2', 2, 'bar2');
+
+		$this->provider->storeChatMessage(1, $message1);
+		$this->provider->storeChatMessage(1, $message2);
+		$this->provider->storeChatMessage(2, $message3);
+
+		$result = $this->provider->getChat(1);
+		sort($result);
+
+		$this->assertCount(2, $result);
+		$this->assertEquals($message1, $result[0]);
+		$this->assertEquals($message2, $result[1]);
+	}
+}