From db843d80ab64b98633c71b86507cdc54a28cc122 Mon Sep 17 00:00:00 2001
From: Pascal Birchler <swissspidy@git.wordpress.org>
Date: Sat, 18 Jun 2016 10:09:26 +0000
Subject: [PATCH] L10n: Add unit tests for the `override_load_textdomain`
 filter.

Fixes #36398.

git-svn-id: https://develop.svn.wordpress.org/trunk@37746 602fd350-edb4-49c9-b593-d223f7449a82
---
 tests/phpunit/tests/l10n.php | 64 ++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/tests/phpunit/tests/l10n.php b/tests/phpunit/tests/l10n.php
index e5713da2b2..f1048aae30 100644
--- a/tests/phpunit/tests/l10n.php
+++ b/tests/phpunit/tests/l10n.php
@@ -177,4 +177,68 @@ class Tests_L10n extends WP_UnitTestCase {
 		$this->assertNotEmpty( $array['X-Generator'] );
 	}
 
+	function test_override_load_textdomain_noop() {
+		add_filter( 'override_load_textdomain', '__return_true' );
+		$load_textdomain = load_textdomain( 'wp-tests-domain', DIR_TESTDATA . '/non-existent-file' );
+		remove_filter( 'override_load_textdomain', '__return_true' );
+
+		$this->assertTrue( $load_textdomain );
+		$this->assertFalse( is_textdomain_loaded( 'wp-tests-domain' ) );
+	}
+
+	function test_override_load_textdomain_non_existent_mofile() {
+		add_filter( 'override_load_textdomain', array( $this, '_override_load_textdomain_filter' ), 10, 3 );
+		$load_textdomain = load_textdomain( 'wp-tests-domain', WP_LANG_DIR . '/non-existent-file.mo' );
+		remove_filter( 'override_load_textdomain', array( $this, '_override_load_textdomain_filter' ) );
+
+		$is_textdomain_loaded = is_textdomain_loaded( 'wp-tests-domain' );
+		unload_textdomain( 'wp-tests-domain' );
+		$is_textdomain_loaded_after = is_textdomain_loaded( 'wp-tests-domain' );
+
+		$this->assertFalse( $load_textdomain );
+		$this->assertFalse( $is_textdomain_loaded );
+		$this->assertFalse( $is_textdomain_loaded_after );
+	}
+
+	function test_override_load_textdomain_custom_mofile() {
+		add_filter( 'override_load_textdomain', array( $this, '_override_load_textdomain_filter' ), 10, 3 );
+		$load_textdomain = load_textdomain( 'wp-tests-domain', WP_LANG_DIR . '/plugins/internationalized-plugin-de_DE.mo' );
+		remove_filter( 'override_load_textdomain', array( $this, '_override_load_textdomain_filter' ) );
+
+		$is_textdomain_loaded = is_textdomain_loaded( 'wp-tests-domain' );
+		unload_textdomain( 'wp-tests-domain' );
+		$is_textdomain_loaded_after = is_textdomain_loaded( 'wp-tests-domain' );
+
+		$this->assertTrue( $load_textdomain );
+		$this->assertTrue( $is_textdomain_loaded );
+		$this->assertFalse( $is_textdomain_loaded_after );
+	}
+
+	/**
+	 * @param bool   $override Whether to override the .mo file loading. Default false.
+	 * @param string $domain   Text domain. Unique identifier for retrieving translated strings.
+	 * @param string $mofile   Path to the MO file.
+	 * @return bool
+	 */
+	function _override_load_textdomain_filter( $override, $domain, $file ) {
+		global $l10n;
+
+		if ( ! is_readable( $file ) ) {
+			return false;
+		}
+
+		$mo = new MO();
+
+		if ( ! $mo->import_from_file( $file ) ) {
+			return false;
+		}
+
+		if ( isset( $l10n[ $domain ] ) ) {
+			$mo->merge_with( $l10n[ $domain ] );
+		}
+
+		$l10n[ $domain ] = &$mo;
+
+		return true;
+	}
 }