Ticket #52534: 52534-with-bc-break.patch

src/wp-includes/class.wp-scripts.php

@@ -484 +484 @@
                         unset( $l10n['l10n_print_after'] );
                 }
 
-                foreach ( (array) $l10n as $key => $value ) {
-                        if ( ! is_scalar( $value ) ) {
-                                continue;
-                        }
+                if ( ! is_array( $l10n ) ) {
+                        _doing_it_wrong(
+                                __METHOD__,
+                                sprintf(
+                                        /* translators: 1: $l10n, 2: wp_add_inline_script() */
+                                        __( 'The %1$s parameter must be an array. To pass arbitrary data to scripts, use the %2$s function instead.' ),
+                                        '<code>$l10n</code>',
+                                        '<code>wp_add_inline_script()</code>'
+                                ),
+                                '5.7.0'
+                        );
+                }
+
+                if ( is_string( $l10n ) ) {
+                        $l10n = html_entity_decode( $l10n, ENT_QUOTES, 'UTF-8' );
+                } else {
+                        foreach ( (array) $l10n as $key => $value ) {
+                                if ( ! is_scalar( $value ) ) {
+                                        continue;
+                                }
 
-                        $l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' );
+                                $l10n[ $key ] = html_entity_decode( (string) $value, ENT_QUOTES, 'UTF-8' );
+                        }
                 }
 
                 $script = "var $object_name = " . wp_json_encode( $l10n ) . ';';

tests/phpunit/tests/dependencies/scripts.php

@@ -1428 +1428 @@
                         $this->assertSame( $found, 0, "sourceMappingURL found in $js_file" );
                 }
         }
+
+        /**
+         * @ticket 52534
+         * @covers ::wp_localize_script
+         *
+         * @dataProvider data_wp_localize_script_data_formats
+         *
+         * @param mixed  $l10n_data Localization data passed to wp_localize_script().
+         * @param string $expected  Expected transformation of localization data.
+         * @param string $warning   Optional. Whether a PHP native warning/error is expected. Default false.
+         */
+        public function test_wp_localize_script_data_formats( $l10n_data, $expected, $warning = false ) {
+                if ( $warning ) {
+                        if ( PHP_VERSION_ID < 80000 ) {
+                                $this->expectException( 'PHPUnit_Framework_Error_Warning' );
+                        } else {
+                                // As this exception will only be set on PHP 8 in combination with PHPUnit 7, this will work (for now).
+                                $this->expectException( 'Error' );
+                        }
+                }
+
+                if ( ! is_array( $l10n_data ) ) {
+                        $this->setExpectedIncorrectUsage( 'WP_Scripts::localize' );
+                }
+
+                wp_enqueue_script( 'test-example', 'example.com', array(), null );
+                wp_localize_script( 'test-example', 'testExample', $l10n_data );
+
+                $expected  = "<script type='text/javascript' id='test-example-js-extra'>\n/* <![CDATA[ */\nvar testExample = {$expected};\n/* ]]> */\n</script>\n";
+                $expected .= "<script type='text/javascript' src='http://example.com' id='test-example-js'></script>\n";
+
+                $this->assertSame( $expected, get_echo( 'wp_print_scripts' ) );
+        }
+
+        /**
+         * Data provider for test_wp_localize_script_data_formats().
+         *
+         * @return array[] {
+         *     Array of arguments for test.
+         *
+         *     @type mixed  $l10n_data Localization data passed to wp_localize_script().
+         *     @type string $expected  Expected transformation of localization data.
+         *     @type string $warning   Optional. Whether a PHP native warning/error is expected.
+         * }
+         */
+        public function data_wp_localize_script_data_formats() {
+                return array(
+                        // Officially supported formats.
+                        array( array( 'array value, no key' ), '["array value, no key"]' ),
+                        array( array( 'foo' => 'bar' ), '{"foo":"bar"}' ),
+                        array( array( 'foo' => array( 'bar' => 'foobar' ) ), '{"foo":{"bar":"foobar"}}' ),
+                        array( array( 'foo' => 6.6 ), '{"foo":"6.6"}' ),
+                        array( array( 'foo' => 6 ), '{"foo":"6"}' ),
+
+                        // Unofficially supported format.
+                        array( 'string', '"string"' ),
+
+                        // Unsupported formats.
+                        array( 1.5, '1.5', true ),
+                        array( 1, '1', true ),
+                        array( false, '[""]' ),
+                );
+        }
 }