1 files changed, 84 insertions, 0 deletions
diff --git a/tests/lib/L10N/LanguageIteratorTest.php b/tests/lib/L10N/LanguageIteratorTest.php
new file mode 100644
index 00000000000..4d1c666cc42
--- /dev/null
+++ b/tests/lib/L10N/LanguageIteratorTest.php
@@ -0,0 +1,84 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace Test\L10N;
+
+use OC\L10N\LanguageIterator;
+use OCP\IConfig;
+use OCP\IUser;
+use Test\TestCase;
+
+class LanguageIteratorTest extends TestCase {
+	/** @var IUser|\PHPUnit\Framework\MockObject\MockObject */
+	protected $user;
+	/** @var IConfig|\PHPUnit\Framework\MockObject\MockObject */
+	protected $config;
+	/** @var LanguageIterator */
+	protected $iterator;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->user = $this->createMock(IUser::class);
+		$this->config = $this->createMock(IConfig::class);
+
+		$this->iterator = new LanguageIterator($this->user, $this->config);
+	}
+
+	public static function languageSettingsProvider(): array {
+		return [
+			// all language settings set
+			[ 'de_DE', 'es_CU', 'zh_TW', ['de_DE', 'de', 'es_CU', 'es', 'zh_TW', 'zh', 'en']],
+			[ 'de', 'es', 'zh', ['de', 'es', 'zh', 'en']],
+			[ 'en', 'en', 'en', ['en', 'en', 'en', 'en']],
+			// one possible setting is missing each
+			[ false, 'es_CU', 'zh_TW', ['es_CU', 'es', 'zh_TW', 'zh', 'en']],
+			[ false, 'es', 'zh_TW', ['es', 'zh_TW', 'zh', 'en']],
+			[ false, 'es_CU', 'zh', ['es_CU', 'es', 'zh', 'en']],
+			[ 'de_DE', null, 'zh_TW', ['de_DE', 'de', 'zh_TW', 'zh', 'en']],
+			[ 'de_DE', null, 'zh', ['de_DE', 'de', 'zh', 'en']],
+			[ 'de', null, 'zh_TW', ['de', 'zh_TW', 'zh', 'en']],
+			[ 'de_DE', 'es_CU', 'en', ['de_DE', 'de', 'es_CU', 'es', 'en', 'en']],
+			[ 'de', 'es_CU', 'en', ['de', 'es_CU', 'es', 'en', 'en']],
+			[ 'de_DE', 'es', 'en', ['de_DE', 'de', 'es', 'en', 'en']],
+			// two possible settings are missing each
+			[ false, null, 'zh_TW', ['zh_TW', 'zh', 'en']],
+			[ false, null, 'zh', ['zh', 'en']],
+			[ false, 'es_CU', 'en', ['es_CU', 'es', 'en', 'en']],
+			[ false, 'es', 'en', ['es', 'en', 'en']],
+			[ 'de_DE', null, 'en', ['de_DE', 'de', 'en', 'en']],
+			[ 'de', null, 'en', ['de', 'en', 'en']],
+			// nothing is set
+			[ false, null, 'en', ['en', 'en']],
+
+		];
+	}
+
+	#[\PHPUnit\Framework\Attributes\DataProvider('languageSettingsProvider')]
+	public function testIterator($forcedLang, $userLang, $sysLang, $expectedValues): void {
+		$this->config->expects($this->any())
+			->method('getSystemValue')
+			->willReturnMap([
+				['force_language', false, $forcedLang],
+			]);
+		$this->config->expects($this->any())
+			->method('getSystemValueString')
+			->willReturnMap([
+				['default_language', 'en', $sysLang],
+			]);
+		$this->config->expects($this->any())
+			->method('getUserValue')
+			->willReturn($userLang);
+
+		foreach ($expectedValues as $expected) {
+			$this->assertTrue($this->iterator->valid());
+			$this->assertSame($expected, $this->iterator->current());
+			$this->iterator->next();
+		}
+		$this->assertFalse($this->iterator->valid());
+	}
+}