Add unit tests

Author: valzargaming

tests/TimestampTest.php

@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is a part of the DiscordPHP project.
+ *
+ * Copyright (c) 2015-2022 David Cole <david.cole1340@gmail.com>
+ * Copyright (c) 2020-present Valithor Obsidion <valithor@discordphp.org>
+ *
+ * This file is subject to the MIT license that is bundled
+ * with this source code in the LICENSE.md file.
+ */
+
+use Discord\Helpers\Timestamp;
+
+final class TimestampTest extends DiscordTestCase
+{
+    /**
+     * @covers \Discord\Helpers\Timestamp::__construct
+     * @covers \Discord\Helpers\Timestamp::__toString
+     */
+    public function testCreatesTimestampWithDefaultFormat(): void
+    {
+        $timestamp = new Timestamp(1700000000);
+
+        $this->assertSame(1700000000, $timestamp->timestamp);
+        $this->assertSame(Timestamp::STYLE_SHORT_DATE_TIME, $timestamp->format);
+        $this->assertSame('<t:1700000000:f>', (string) $timestamp);
+    }
+
+    /**
+     * @covers \Discord\Helpers\Timestamp::new
+     */
+    public function testCreatesTimestampWithFactory(): void
+    {
+        $timestamp = Timestamp::new('1700000000', Timestamp::STYLE_RELATIVE_TIME);
+
+        $this->assertSame(1700000000, $timestamp->timestamp);
+        $this->assertSame(Timestamp::STYLE_RELATIVE_TIME, $timestamp->format);
+        $this->assertSame('<t:1700000000:R>', (string) $timestamp);
+    }
+
+    /**
+     * @covers \Discord\Helpers\Timestamp::setTimestamp
+     */
+    public function testNormalizesDateTimeTimestamp(): void
+    {
+        $timestamp = new Timestamp(new DateTimeImmutable('@1700000000'));
+
+        $this->assertSame(1700000000, $timestamp->timestamp);
+    }
+
+    /**
+     * @covers \Discord\Helpers\Timestamp::__set
+     * @covers \Discord\Helpers\Timestamp::setTimestamp
+     * @covers \Discord\Helpers\Timestamp::setFormat
+     */
+    public function testMagicPropertiesCanBeUpdated(): void
+    {
+        $timestamp = new Timestamp(1700000000);
+
+        $timestamp->timestamp = '1700000001';
+        $timestamp->format = Timestamp::STYLE_LONG_DATE_TIME;
+
+        $this->assertSame(1700000001, $timestamp->timestamp);
+        $this->assertSame(Timestamp::STYLE_LONG_DATE_TIME, $timestamp->format);
+        $this->assertSame('<t:1700000001:F>', (string) $timestamp);
+    }
+
+    /**
+     * @covers \Discord\Helpers\Timestamp::setTimestamp
+     */
+    public function testRejectsInvalidTimestamp(): void
+    {
+        $this->expectException(InvalidArgumentException::class);
+
+        new Timestamp('not-a-timestamp');
+    }
+
+    /**
+     * @covers \Discord\Helpers\Timestamp::setFormat
+     */
+    public function testRejectsInvalidFormat(): void
+    {
+        $this->expectException(InvalidArgumentException::class);
+
+        new Timestamp(1700000000, 'invalid');
+    }
+}