First unit tests, misc fixes

tests/Broker/MessageTest.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace NoccyLabs\Mercureact\Broker;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+
+#[CoversClass(Message::class)]
+class MessageTest extends \PHPUnit\Framework\TestCase
+{
+
+    public function testCreatingMessageFromData()
+    {
+        $message = Message::fromData([
+            'id' => '1a',
+            'topic' => '2b',
+            'data' => '3c',
+            'type' => '4d',
+            'retry' => 42,
+            'private' => true,
+        ]);
+
+        $this->assertEquals("1a", $message->id);
+        $this->assertEquals(["2b"], $message->topic);
+        $this->assertEquals("3c", $message->data);
+        $this->assertEquals("4d", $message->type);
+        $this->assertEquals(42, $message->retry);
+        $this->assertEquals(true, $message->private);
+
+        $message = Message::fromData([
+            'id' => '1a',
+            'topic' => ['2b'],
+            'data' => '3c',
+            'type' => '4d',
+            'retry' => 42,
+            'private' => true,
+        ]);
+
+        $this->assertEquals("1a", $message->id);
+        $this->assertEquals(["2b"], $message->topic);
+        $this->assertEquals("3c", $message->data);
+        $this->assertEquals("4d", $message->type);
+        $this->assertEquals(42, $message->retry);
+        $this->assertEquals(true, $message->private);
+
+    }
+
+    public function testCreatingSseFromMessage()
+    {
+        $message = Message::fromData([
+            'id' => '1a',
+            'topic' => '2b',
+            'data' => '3c',
+            'type' => '4d',
+            'retry' => 42,
+            'private' => true,
+        ]);
+        $sse = $message->toString();
+
+        $this->assertEquals(<<<EXPECT
+        event: 4d
+        retry: 42
+        id: 1a
+        data: 3c
+
+        
+        EXPECT, $sse);
+        
+    }
+
+}