<?php

/*
* This file is part of the JSON Lint package.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

use Seld\JsonLint\JsonParser;
use Seld\JsonLint\ParsingException;
use Seld\JsonLint\DuplicateKeyException;

class JsonParserTest extends PHPUnit_Framework_TestCase
{
protected $json = array(
'42', '42.3', '0.3', '-42', '-42.3', '-0.3',
'2e1', '2E1', '-2e1', '-2E1', '2E+2', '2E-2', '-2E+2', '-2E-2',
'true', 'false', 'null', '""', '[]', '{}', '"string"',
'["a", "sdfsd"]',
'{"foo":"bar", "bar":"baz", "":"buz"}',
'{"":"foo", "_empty_":"bar"}',
'"\u00c9v\u00e9nement"',
'"http:\/\/foo.com"',
'"zo\\\\mg"',
'{"test":"\u00c9v\u00e9nement"}',
'["\u00c9v\u00e9nement"]',
'"foo/bar"',
'{"test":"http:\/\/foo\\\\zomg"}',
'["http:\/\/foo\\\\zomg"]',
'{"":"foo"}',
'{"a":"b", "b":"c"}',
'0',
'""',
);

/**
* @dataProvider provideValidStrings
*/
public function testParsesValidStrings($input)
{
$parser = new JsonParser();
$this->assertEquals(json_decode($input), $parser->parse($input));
}

public function provideValidStrings()
{
$strings = array();
foreach ($this->json as $input) {
$strings[] = array($input);
}

return $strings;
}

public function testErrorOnTrailingComma()
{
$parser = new JsonParser();
try {
$parser->parse('{
"foo":"bar",
}');
$this->fail('Invalid trailing comma should be detected');
} catch (ParsingException $e) {
$this->assertContains('It appears you have an extra trailing comma', $e->getMessage());
}
}

public function testErrorOnInvalidQuotes()
{
$parser = new JsonParser();
try {
$parser->parse('{
"foo": \'bar\',
}');
$this->fail('Invalid quotes for string should be detected');
} catch (ParsingException $e) {
$this->assertContains('Invalid string, it appears you used single quotes instead of double quotes', $e->getMessage());
}
}

public function testErrorOnUnescapedBackslash()
{
$parser = new JsonParser();
try {
$parser->parse('{
"foo": "bar\z",
}');
$this->fail('Invalid unescaped string should be detected');
} catch (ParsingException $e) {
$this->assertContains('Invalid string, it appears you have an unescaped backslash at: \z', $e->getMessage());
}
}

public function testErrorOnUnterminatedString()
{
$parser = new JsonParser();
try {
$parser->parse('{"bar": "foo}');
$this->fail('Invalid unterminated string should be detected');
} catch (ParsingException $e) {
$this->assertContains('Invalid string, it appears you forgot to terminate a string, or attempted to write a multiline string which is invalid', $e->getMessage());
}
}

public function testErrorOnMultilineString()
{
$parser = new JsonParser();
try {
$parser->parse('{"bar": "foo
bar"}');
$this->fail('Invalid multi-line string should be detected');
} catch (ParsingException $e) {
$this->assertContains('Invalid string, it appears you forgot to terminate a string, or attempted to write a multiline string which is invalid', $e->getMessage());
}
}

public function testErrorAtBeginning()
{
$parser = new JsonParser();
try {
$parser->parse('

');
$this->fail('Empty string should be invalid');
} catch (ParsingException $e) {
$this->assertContains("Parse error on line 1:\n\n^", $e->getMessage());
}
}

public function testParsesMultiInARow()
{
$parser = new JsonParser();
foreach ($this->json as $input) {
$this->assertEquals(json_decode($input), $parser->parse($input));
}
}

public function testDetectsKeyOverrides()
{
$parser = new JsonParser();

try {
$parser->parse('{"a":"b", "a":"c"}', JsonParser::DETECT_KEY_CONFLICTS);
$this->fail('Duplicate keys should not be allowed');
} catch (DuplicateKeyException $e) {
$this->assertContains('Duplicate key: a', $e->getMessage());
$this->assertSame('a', $e->getKey());
$this->assertSame(array('line' => 1, 'key' => 'a'), $e->getDetails());
}
}

public function testDetectsKeyOverridesWithEmpty()
{
$parser = new JsonParser();

if (PHP_VERSION_ID >= 70100) {
$this->markTestSkipped('Only for PHP < 7.1');
}
try {
$parser->parse('{"":"b", "_empty_":"a"}', JsonParser::DETECT_KEY_CONFLICTS);
$this->fail('Duplicate keys should not be allowed');
} catch (DuplicateKeyException $e) {
$this->assertContains('Duplicate key: _empty_', $e->getMessage());
$this->assertSame('_empty_', $e->getKey());
$this->assertSame(array('line' => 1, 'key' => '_empty_'), $e->getDetails());
}
}

public function testDuplicateKeys()
{
$parser = new JsonParser();

$result = $parser->parse('{"a":"b", "a":"c", "a":"d"}', JsonParser::ALLOW_DUPLICATE_KEYS);
$this->assertThat($result,
$this->logicalAnd(
$this->objectHasAttribute('a'),
$this->objectHasAttribute('a.1'),
$this->objectHasAttribute('a.2')
)
);
}

public function testDuplicateKeysWithEmpty()
{
$parser = new JsonParser();

if (PHP_VERSION_ID >= 70100) {
$this->markTestSkipped('Only for PHP < 7.1');
}
$result = $parser->parse('{"":"a", "_empty_":"b"}', JsonParser::ALLOW_DUPLICATE_KEYS);
$this->assertThat($result,
$this->logicalAnd(
$this->objectHasAttribute('_empty_'),
$this->objectHasAttribute('_empty_.1')
)
);
}

public function testParseToArray()
{
$parser = new JsonParser();

$json = '{"one":"a", "two":{"three": "four"}, "": "empty"}';
$result = $parser->parse($json, JsonParser::PARSE_TO_ASSOC);
$this->assertSame(json_decode($json, true), $result);
}

public function testFileWithBOM()
{
try {
$parser = new JsonParser();
$parser->parse(file_get_contents(dirname(__FILE__) .'/bom.json'));
$this->fail('BOM should be detected');
} catch (ParsingException $e) {
$this->assertContains('BOM detected', $e->getMessage());
}
}

public function testLongString()
{
$parser = new JsonParser();

$json = '{"k":"' . str_repeat("a\\n",10000) . '"}';
$this->assertEquals(json_decode($json), $parser->parse($json));
}
}