feature #1597 [Icons] Add InMemory registry to allow easier tests (smnandre)

This PR was squashed before being merged into the 2.x branch.

Discussion
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[Icons] Add InMemory registry to allow easier tests

Will come handy to test the IconRenderer

Commits
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dfd6a2a [Icons] Add InMemory registry to allow easier tests

Author: kbond

src/Icons/src/Registry/InMemoryIconRegistry.php

@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\UX\Icons\Registry;
+
+use Symfony\UX\Icons\Exception\IconNotFoundException;
+use Symfony\UX\Icons\IconRegistryInterface;
+use Symfony\UX\Icons\Svg\Icon;
+
+/**
+ * @author Simon André <[email protected]>
+ */
+final class InMemoryIconRegistry implements IconRegistryInterface
+{
+    public function __construct(
+        /**
+         * @var array<string, Icon> $icons
+         */
+        private array $icons = [],
+    ) {
+    }
+
+    public function set(string $name, Icon $icon): void
+    {
+        $this->icons[$name] = $icon;
+    }
+
+    public function get(string $name): Icon
+    {
+        return $this->icons[$name] ?? throw new IconNotFoundException(sprintf('Icon "%s" not found.', $name));
+    }
+}

src/Icons/tests/Unit/Registry/InMemoryIconRegistryTest.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\UX\Icons\Tests\Unit\Registry;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\UX\Icons\Exception\IconNotFoundException;
+use Symfony\UX\Icons\Registry\InMemoryIconRegistry;
+use Symfony\UX\Icons\Svg\Icon;
+
+/**
+ * @author Simon André <[email protected]>
+ */
+final class InMemoryIconRegistryTest extends TestCase
+{
+    public function testRegistryConstructor(): void
+    {
+        $icon = new Icon('foo', ['bar' => 'foobar']);
+        $registry = new InMemoryIconRegistry(['foo' => $icon]);
+
+        $this->assertSame($icon, $registry->get('foo'));
+    }
+
+    public function testRegistryReplaceIcon(): void
+    {
+        $registry = new InMemoryIconRegistry();
+        $foo = new Icon('foo', []);
+        $bar = new Icon('bar', []);
+
+        $registry->set('foo', $foo);
+        $this->assertSame($foo, $registry->get('foo'));
+
+        $registry->set('bar', $bar);
+        $this->assertSame($bar, $registry->get('bar'));
+
+        $registry->set('bar', $foo);
+        $this->assertSame($foo, $registry->get('bar'));
+    }
+
+    public function testRegistryThrowsExceptionOnUnknownIcon(): void
+    {
+        $this->expectException(IconNotFoundException::class);
+        $this->expectExceptionMessage('Icon "foo" not found.');
+
+        $registry = new InMemoryIconRegistry();
+        $registry->get('foo');
+    }
+}