First set of tests, argument unwrapping/injection

tests/CommandRegistryTest.php

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+<?php
+
+namespace NoccyLabs\React\CommandBus;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+
+#[CoversClass(CommandRegistry::class)]
+class CommandRegistryTest extends \PHPUnit\Framework\TestCase
+{
+
+    public function testAddingNewCommandEmitsEvent()
+    {
+        $count = 0;
+
+        $reg = new CommandRegistry();
+        $reg->on(CommandRegistry::EVENT_REGISTERED, function ($data) use (&$count){
+            $this->assertEquals('foo', $data);
+            $count++;
+        });
+        $reg->register('foo', function () {});
+        $reg->register('foo', function () {});
+
+        $this->assertEquals(1, $count);
+    }
+
+    public function testRemovingCommandEmitsEvent()
+    {
+        $count = 0;
+
+        $reg = new CommandRegistry();
+        $reg->on(CommandRegistry::EVENT_UNREGISTERED, function ($data) use (&$count){
+            $this->assertEquals('foo', $data);
+            $count++;
+        });
+        $reg->register('foo', function () {});
+        $reg->unregister('foo');
+        $reg->unregister('foo');
+
+        $this->assertEquals(1, $count);
+    }
+
+    public function testFindingCommands()
+    {
+        $cmda = function () {};
+        $cmdb = function () {};
+
+        $reg = new CommandRegistry();
+        $reg->register('a', $cmda);
+        $reg->register('b', $cmdb);
+
+        $this->assertEquals('a', $reg->find('a')?->getName());
+        $this->assertEquals('b', $reg->find('b')?->getName());
+    }
+
+    public function testGettingCommandNames()
+    {
+        $cmda = function () {};
+        $cmdb = function () {};
+
+        $reg = new CommandRegistry();
+        $reg->register('a', $cmda);
+        $reg->register('b', $cmdb);
+
+        $this->assertEquals(['a','b'], $reg->getNames());
+    }
+
+}

tests/CommandTest.php

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+<?php
+
+namespace NoccyLabs\React\CommandBus;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+
+#[CoversClass(Command::class)]
+class CommandTest extends \PHPUnit\Framework\TestCase
+{
+
+    public function testCommandName()
+    {
+        $command = new Command("foobar", function () {});
+
+        $this->assertEquals('foobar', $command->getName());
+    }
+
+    public function testCommandExecution()
+    {
+        $hit = false;
+        $command = new Command("foobar", function () use (&$hit) { $hit=true; });
+        $context = new Context("foobar", []);
+
+        $command->call($context);
+
+        $this->assertEquals(true, $hit);
+    }
+
+}

tests/ContextTest.php

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+<?php
+
+namespace NoccyLabs\React\CommandBus;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+
+#[CoversClass(Context::class)]
+class ContextTest extends \PHPUnit\Framework\TestCase
+{
+
+    public function testContextPropertyAccess()
+    {
+        $context = new Context("", [ 'foo'=>true, 'bar'=>'hello' ]);
+
+        $this->assertEquals(true, $context->foo);
+        $this->assertEquals('hello', $context->bar);
+    }
+
+    public function testMakingParameters()
+    {
+        $func1 = function () {};
+        $func2 = function (Context $context) {};
+        $func3 = function ($a, ?int $b, ?string $c, $d) {};
+
+        $context = new Context("", [ 'a'=>true, 'b'=>42, 'c'=>'hello' ]);
+
+        $expect1 = [];
+        $expect2 = [$context];
+        $expect3 = [true,42,'hello',null];
+
+        $args1 = $context->toMethodParameters($func1);
+        $this->assertEquals($expect1, $args1);
+
+        $args2 = $context->toMethodParameters($func2);
+        $this->assertEquals($expect2, $args2);
+
+        $args3 = $context->toMethodParameters($func3);
+        $this->assertEquals($expect3, $args3);
+    }
+}