Fix #91: Add IdMessageReader that returns ID as message and doesn't…

… support getting all messages at once

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 ## 2.0.1 under development
 
-- no changes in this release.
+- New #91: Add `IdMessageReader` that returns ID as message and doesn't support getting all messages at once (@vjik)
 
 ## 2.0.0 November 08, 2022
 

src/IdMessageReader.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Translator;
+
+use RuntimeException;
+
+/**
+ * ID message reader returns ID as message and doesn't support getting all messages at once.
+ */
+final class IdMessageReader implements MessageReaderInterface
+{
+    public function getMessage(string $id, string $category, string $locale, array $parameters = []): string
+    {
+        return $id;
+    }
+
+    public function getMessages(string $category, string $locale): array
+    {
+        throw new RuntimeException('IdMessageReader doesn\'t support getting all messages at once.');
+    }
+}

tests/IdMessageReaderTest.php

@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Translator\Tests;
+
+use PHPUnit\Framework\TestCase;
+use RuntimeException;
+use Yiisoft\Translator\IdMessageReader;
+
+final class IdMessageReaderTest extends TestCase
+{
+    public function testGetMessage(): void
+    {
+        $reader = new IdMessageReader();
+
+        $this->assertSame('test', $reader->getMessage('test', 'my-module', 'en_US'));
+    }
+
+    public function testGetMessages(): void
+    {
+        $reader = new IdMessageReader();
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('IdMessageReader doesn\'t support getting all messages at once');
+        $reader->getMessages('my-module', 'en_US');
+    }
+}