--- /dev/null
+<?php
+
+/**
+ * @covers FormatJson
+ */
+class FormatJsonTest extends MediaWikiTestCase {
+
+ public static function provideEncoderPrettyPrinting() {
+ return [
+ // Four spaces
+ [ true, ' ' ],
+ [ ' ', ' ' ],
+ // Two spaces
+ [ ' ', ' ' ],
+ // One tab
+ [ "\t", "\t" ],
+ ];
+ }
+
+ /**
+ * @dataProvider provideEncoderPrettyPrinting
+ */
+ public function testEncoderPrettyPrinting( $pretty, $expectedIndent ) {
+ $obj = [
+ 'emptyObject' => new stdClass,
+ 'emptyArray' => [],
+ 'string' => 'foobar\\',
+ 'filledArray' => [
+ [
+ 123,
+ 456,
+ ],
+ // Nested json works without problems
+ '"7":["8",{"9":"10"}]',
+ // Whitespace clean up doesn't touch strings that look alike
+ "{\n\t\"emptyObject\": {\n\t},\n\t\"emptyArray\": [ ]\n}",
+ ],
+ ];
+
+ // No trailing whitespace, no trailing linefeed
+ $json = '{
+ "emptyObject": {},
+ "emptyArray": [],
+ "string": "foobar\\\\",
+ "filledArray": [
+ [
+ 123,
+ 456
+ ],
+ "\"7\":[\"8\",{\"9\":\"10\"}]",
+ "{\n\t\"emptyObject\": {\n\t},\n\t\"emptyArray\": [ ]\n}"
+ ]
+}';
+
+ $json = str_replace( "\r", '', $json ); // Windows compat
+ $json = str_replace( "\t", $expectedIndent, $json );
+ $this->assertSame( $json, FormatJson::encode( $obj, $pretty ) );
+ }
+
+ public static function provideEncodeDefault() {
+ return self::getEncodeTestCases( [] );
+ }
+
+ /**
+ * @dataProvider provideEncodeDefault
+ */
+ public function testEncodeDefault( $from, $to ) {
+ $this->assertSame( $to, FormatJson::encode( $from ) );
+ }
+
+ public static function provideEncodeUtf8() {
+ return self::getEncodeTestCases( [ 'unicode' ] );
+ }
+
+ /**
+ * @dataProvider provideEncodeUtf8
+ */
+ public function testEncodeUtf8( $from, $to ) {
+ $this->assertSame( $to, FormatJson::encode( $from, false, FormatJson::UTF8_OK ) );
+ }
+
+ public static function provideEncodeXmlMeta() {
+ return self::getEncodeTestCases( [ 'xmlmeta' ] );
+ }
+
+ /**
+ * @dataProvider provideEncodeXmlMeta
+ */
+ public function testEncodeXmlMeta( $from, $to ) {
+ $this->assertSame( $to, FormatJson::encode( $from, false, FormatJson::XMLMETA_OK ) );
+ }
+
+ public static function provideEncodeAllOk() {
+ return self::getEncodeTestCases( [ 'unicode', 'xmlmeta' ] );
+ }
+
+ /**
+ * @dataProvider provideEncodeAllOk
+ */
+ public function testEncodeAllOk( $from, $to ) {
+ $this->assertSame( $to, FormatJson::encode( $from, false, FormatJson::ALL_OK ) );
+ }
+
+ public function testEncodePhpBug46944() {
+ $this->assertNotEquals(
+ '\ud840\udc00',
+ strtolower( FormatJson::encode( "\xf0\xa0\x80\x80" ) ),
+ 'Test encoding an broken json_encode character (U+20000)'
+ );
+ }
+
+ public function testDecodeReturnType() {
+ $this->assertInternalType(
+ 'object',
+ FormatJson::decode( '{"Name": "Cheeso", "Rank": 7}' ),
+ 'Default to object'
+ );
+
+ $this->assertInternalType(
+ 'array',
+ FormatJson::decode( '{"Name": "Cheeso", "Rank": 7}', true ),
+ 'Optional array'
+ );
+ }
+
+ public static function provideParse() {
+ return [
+ [ null ],
+ [ true ],
+ [ false ],
+ [ 0 ],
+ [ 1 ],
+ [ 1.2 ],
+ [ '' ],
+ [ 'str' ],
+ [ [ 0, 1, 2 ] ],
+ [ [ 'a' => 'b' ] ],
+ [ [ 'a' => 'b' ] ],
+ [ [ 'a' => 'b', 'x' => [ 'c' => 'd' ] ] ],
+ ];
+ }
+
+ /**
+ * Recursively convert arrays into stdClass
+ * @param array|string|bool|int|float|null $value
+ * @return stdClass|string|bool|int|float|null
+ */
+ public static function toObject( $value ) {
+ return !is_array( $value ) ? $value : (object)array_map( __METHOD__, $value );
+ }
+
+ /**
+ * @dataProvider provideParse
+ * @param mixed $value
+ */
+ public function testParse( $value ) {
+ $expected = self::toObject( $value );
+ $json = FormatJson::encode( $expected, false, FormatJson::ALL_OK );
+ $this->assertJson( $json );
+
+ $st = FormatJson::parse( $json );
+ $this->assertInstanceOf( 'Status', $st );
+ $this->assertTrue( $st->isGood() );
+ $this->assertEquals( $expected, $st->getValue() );
+
+ $st = FormatJson::parse( $json, FormatJson::FORCE_ASSOC );
+ $this->assertInstanceOf( 'Status', $st );
+ $this->assertTrue( $st->isGood() );
+ $this->assertEquals( $value, $st->getValue() );
+ }
+
+ /**
+ * Test data for testParseTryFixing.
+ *
+ * Some PHP interpreters use json-c rather than the JSON.org cannonical
+ * parser to avoid being encumbered by the "shall be used for Good, not
+ * Evil" clause of the JSON.org parser's license. By default, json-c
+ * parses in a non-strict mode which allows trailing commas for array and
+ * object delarations among other things, so our JSON_ERROR_SYNTAX rescue
+ * block is not always triggered. It however isn't lenient in exactly the
+ * same ways as our TRY_FIXING mode, so the assertions in this test are
+ * a bit more complicated than they ideally would be:
+ *
+ * Optional third argument: true if json-c parses the value without
+ * intervention, false otherwise. Defaults to true.
+ *
+ * Optional fourth argument: expected cannonical JSON serialization of
+ * json-c parsed result. Defaults to the second argument's value.
+ */
+ public static function provideParseTryFixing() {
+ return [
+ [ "[,]", '[]', false ],
+ [ "[ , ]", '[]', false ],
+ [ "[ , }", false ],
+ [ '[1],', false, true, '[1]' ],
+ [ "[1,]", '[1]' ],
+ [ "[1\n,]", '[1]' ],
+ [ "[1,\n]", '[1]' ],
+ [ "[1,]\n", '[1]' ],
+ [ "[1\n,\n]\n", '[1]' ],
+ [ '["a,",]', '["a,"]' ],
+ [ "[[1,]\n,[2,\n],[3\n,]]", '[[1],[2],[3]]' ],
+ // I wish we could parse this, but would need quote parsing
+ [ '[[1,],[2,],[3,]]', false, true, '[[1],[2],[3]]' ],
+ [ '[1,,]', false, false, '[1]' ],
+ ];
+ }
+
+ /**
+ * @dataProvider provideParseTryFixing
+ * @param string $value
+ * @param string|bool $expected Expected result with strict parser
+ * @param bool $jsoncParses Will json-c parse this value without TRY_FIXING?
+ * @param string|bool $expectedJsonc Expected result with lenient parser
+ * if different from the strict expectation
+ */
+ public function testParseTryFixing(
+ $value, $expected,
+ $jsoncParses = true, $expectedJsonc = null
+ ) {
+ // PHP5 results are always expected to have isGood() === false
+ $expectedGoodStatus = false;
+
+ // Check to see if json parser allows trailing commas
+ if ( json_decode( '[1,]' ) !== null ) {
+ // Use json-c specific expected result if provided
+ $expected = ( $expectedJsonc === null ) ? $expected : $expectedJsonc;
+ // If json-c parses the value natively, expect isGood() === true
+ $expectedGoodStatus = $jsoncParses;
+ }
+
+ $st = FormatJson::parse( $value, FormatJson::TRY_FIXING );
+ $this->assertInstanceOf( 'Status', $st );
+ if ( $expected === false ) {
+ $this->assertFalse( $st->isOK(), 'Expected isOK() == false' );
+ } else {
+ $this->assertSame( $expectedGoodStatus, $st->isGood(),
+ 'Expected isGood() == ' . ( $expectedGoodStatus ? 'true' : 'false' )
+ );
+ $this->assertTrue( $st->isOK(), 'Expected isOK == true' );
+ $val = FormatJson::encode( $st->getValue(), false, FormatJson::ALL_OK );
+ $this->assertEquals( $expected, $val );
+ }
+ }
+
+ public static function provideParseErrors() {
+ return [
+ [ 'aaa' ],
+ [ '{"j": 1 ] }' ],
+ ];
+ }
+
+ /**
+ * @dataProvider provideParseErrors
+ * @param mixed $value
+ */
+ public function testParseErrors( $value ) {
+ $st = FormatJson::parse( $value );
+ $this->assertInstanceOf( 'Status', $st );
+ $this->assertFalse( $st->isOK() );
+ }
+
+ public function provideStripComments() {
+ return [
+ [ '{"a":"b"}', '{"a":"b"}' ],
+ [ "{\"a\":\"b\"}\n", "{\"a\":\"b\"}\n" ],
+ [ '/*c*/{"c":"b"}', '{"c":"b"}' ],
+ [ '{"a":"c"}/*c*/', '{"a":"c"}' ],
+ [ '/*c//d*/{"c":"b"}', '{"c":"b"}' ],
+ [ '{/*c*/"c":"b"}', '{"c":"b"}' ],
+ [ "/*\nc\r\n*/{\"c\":\"b\"}", '{"c":"b"}' ],
+ [ "//c\n{\"c\":\"b\"}", '{"c":"b"}' ],
+ [ "//c\r\n{\"c\":\"b\"}", '{"c":"b"}' ],
+ [ '{"a":"c"}//c', '{"a":"c"}' ],
+ [ "{\"a-c\"://c\n\"b\"}", '{"a-c":"b"}' ],
+ [ '{"/*a":"b"}', '{"/*a":"b"}' ],
+ [ '{"a":"//b"}', '{"a":"//b"}' ],
+ [ '{"a":"b/*c*/"}', '{"a":"b/*c*/"}' ],
+ [ "{\"\\\"/*a\":\"b\"}", "{\"\\\"/*a\":\"b\"}" ],
+ [ '', '' ],
+ [ '/*c', '' ],
+ [ '//c', '' ],
+ [ '"http://example.com"', '"http://example.com"' ],
+ [ "\0", "\0" ],
+ [ '"Blåbærsyltetøy"', '"Blåbærsyltetøy"' ],
+ ];
+ }
+
+ /**
+ * @covers FormatJson::stripComments
+ * @dataProvider provideStripComments
+ * @param string $json
+ * @param string $expect
+ */
+ public function testStripComments( $json, $expect ) {
+ $this->assertSame( $expect, FormatJson::stripComments( $json ) );
+ }
+
+ public function provideParseStripComments() {
+ return [
+ [ '/* blah */true', true ],
+ [ "// blah \ntrue", true ],
+ [ '[ "a" , /* blah */ "b" ]', [ 'a', 'b' ] ],
+ ];
+ }
+
+ /**
+ * @covers FormatJson::parse
+ * @covers FormatJson::stripComments
+ * @dataProvider provideParseStripComments
+ * @param string $json
+ * @param mixed $expect
+ */
+ public function testParseStripComments( $json, $expect ) {
+ $st = FormatJson::parse( $json, FormatJson::STRIP_COMMENTS );
+ $this->assertInstanceOf( 'Status', $st );
+ $this->assertTrue( $st->isGood() );
+ $this->assertEquals( $expect, $st->getValue() );
+ }
+
+ /**
+ * Generate a set of test cases for a particular combination of encoder options.
+ *
+ * @param array $unescapedGroups List of character groups to leave unescaped
+ * @return array Arrays of unencoded strings and corresponding encoded strings
+ */
+ private static function getEncodeTestCases( array $unescapedGroups ) {
+ $groups = [
+ 'always' => [
+ // Forward slash (always unescaped)
+ '/' => '/',
+
+ // Control characters
+ "\0" => '\u0000',
+ "\x08" => '\b',
+ "\t" => '\t',
+ "\n" => '\n',
+ "\r" => '\r',
+ "\f" => '\f',
+ "\x1f" => '\u001f', // representative example
+
+ // Double quotes
+ '"' => '\"',
+
+ // Backslashes
+ '\\' => '\\\\',
+ '\\\\' => '\\\\\\\\',
+ '\\u00e9' => '\\\u00e9', // security check for Unicode unescaping
+
+ // Line terminators
+ "\xe2\x80\xa8" => '\u2028',
+ "\xe2\x80\xa9" => '\u2029',
+ ],
+ 'unicode' => [
+ "\xc3\xa9" => '\u00e9',
+ "\xf0\x9d\x92\x9e" => '\ud835\udc9e', // U+1D49E, outside the BMP
+ ],
+ 'xmlmeta' => [
+ '<' => '\u003C', // JSON_HEX_TAG uses uppercase hex digits
+ '>' => '\u003E',
+ '&' => '\u0026',
+ ],
+ ];
+
+ $cases = [];
+ foreach ( $groups as $name => $rules ) {
+ $leaveUnescaped = in_array( $name, $unescapedGroups );
+ foreach ( $rules as $from => $to ) {
+ $cases[] = [ $from, '"' . ( $leaveUnescaped ? $from : $to ) . '"' ];
+ }
+ }
+
+ return $cases;
+ }
+}
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