From f70fdbe5e97a5b705f7d517c9380babb33d0e870 Mon Sep 17 00:00:00 2001
From: Christian Kolb <info@digital-craftsman.de>
Date: Mon, 6 May 2024 08:28:05 +0200
Subject: [PATCH] Add tests

---
 tests/Clock/FrozenClockTest.php | 28 ++++++++++++++++++++++++++++
 tests/Clock/SystemClockTest.php | 29 +++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 tests/Clock/FrozenClockTest.php
 create mode 100644 tests/Clock/SystemClockTest.php

diff --git a/tests/Clock/FrozenClockTest.php b/tests/Clock/FrozenClockTest.php
new file mode 100644
index 0000000..1def786
--- /dev/null
+++ b/tests/Clock/FrozenClockTest.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DigitalCraftsman\DateTimePrecision\Clock;
+
+use DigitalCraftsman\DateTimePrecision\Moment;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(FrozenClock::class)]
+final class FrozenClockTest extends TestCase
+{
+    #[Test]
+    public function freeze_works(): void
+    {
+        // -- Arrange
+        $clock = new FrozenClock();
+        $moment = Moment::fromStringInTimeZone('2024-05-06 08:00:00', new \DateTimeZone('Europe/Berlin'));
+
+        // -- Act
+        $clock->freeze($moment);
+
+        // -- Assert
+        self::assertSame($moment, $clock->now());
+    }
+}
diff --git a/tests/Clock/SystemClockTest.php b/tests/Clock/SystemClockTest.php
new file mode 100644
index 0000000..e78f271
--- /dev/null
+++ b/tests/Clock/SystemClockTest.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DigitalCraftsman\DateTimePrecision\Clock;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Only very little that's possible to test here, so we do what's possible.
+ */
+#[CoversClass(SystemClock::class)]
+final class SystemClockTest extends TestCase
+{
+    #[Test]
+    public function now_works(): void
+    {
+        // -- Arrange
+        $clock = new SystemClock();
+
+        // -- Act
+        $moment = $clock->now();
+
+        // -- Assert
+        self::assertEquals($moment->dateTime->getTimezone(), new \DateTimeZone('UTC'));
+    }
+}