1 files changed, 40 insertions, 0 deletions
diff --git a/tests/phpunit/includes/languages/LanguageFiTest.php b/tests/phpunit/includes/languages/LanguageFiTest.php
new file mode 100644
index 000000000000..fb9efd76e493
--- /dev/null
+++ b/tests/phpunit/includes/languages/LanguageFiTest.php
@@ -0,0 +1,40 @@
+<?php
+declare( strict_types=1 );
+
+/**
+ * @group Language
+ * @covers LanguageFi
+ */
+class LanguageFiTest extends LanguageClassesTestCase {
+	/**
+	 * @dataProvider provideConvertGrammar
+	 */
+	public function testConvertGrammar( string $word, string $case, string $expected ): void {
+		$this->assertSame( $expected, $this->getLang()->convertGrammar( $word, $case ) );
+	}
+
+	public static function provideConvertGrammar(): iterable {
+		$wordCaseMappings = [
+			'talo' => [
+				'genitive' => 'talon',
+				'elative' => 'talosta',
+				'partitive' => 'taloa',
+				'illative' => 'taloon',
+				'inessive' => 'talossa',
+			],
+			'pastöroitu' => [
+				'partitive' => 'pastöroitua',
+			],
+			'Wikipedia' => [
+				'elative' => 'Wikipediasta',
+				'partitive' => 'Wikipediaa',
+			],
+		];
+
+		foreach ( $wordCaseMappings as $word => $caseMappings ) {
+			foreach ( $caseMappings as $case => $expected ) {
+				yield "$word $case" => [ (string)$word, $case, $expected ];
+			}
+		}
+	}
+}