Kanboard requires at least PHP 5.6 now

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diff --git a/vendor/symfony/debug/Tests/Exception/FlattenExceptionTest.php b/vendor/symfony/debug/Tests/Exception/FlattenExceptionTest.php
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+++ b/vendor/symfony/debug/Tests/Exception/FlattenExceptionTest.php
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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Debug\Tests\Exception;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Debug\Exception\FlattenException;
+use Symfony\Component\HttpFoundation\Exception\SuspiciousOperationException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
+use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException;
+use Symfony\Component\HttpKernel\Exception\ConflictHttpException;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+use Symfony\Component\HttpKernel\Exception\GoneHttpException;
+use Symfony\Component\HttpKernel\Exception\LengthRequiredHttpException;
+use Symfony\Component\HttpKernel\Exception\PreconditionFailedHttpException;
+use Symfony\Component\HttpKernel\Exception\PreconditionRequiredHttpException;
+use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
+use Symfony\Component\HttpKernel\Exception\TooManyRequestsHttpException;
+use Symfony\Component\HttpKernel\Exception\UnsupportedMediaTypeHttpException;
+
+class FlattenExceptionTest extends TestCase
+{
+    public function testStatusCode()
+    {
+        $flattened = FlattenException::create(new \RuntimeException(), 403);
+        $this->assertEquals('403', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new \RuntimeException());
+        $this->assertEquals('500', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new NotFoundHttpException());
+        $this->assertEquals('404', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new UnauthorizedHttpException('Basic realm="My Realm"'));
+        $this->assertEquals('401', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new BadRequestHttpException());
+        $this->assertEquals('400', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new NotAcceptableHttpException());
+        $this->assertEquals('406', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new ConflictHttpException());
+        $this->assertEquals('409', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new MethodNotAllowedHttpException(array('POST')));
+        $this->assertEquals('405', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new AccessDeniedHttpException());
+        $this->assertEquals('403', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new GoneHttpException());
+        $this->assertEquals('410', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new LengthRequiredHttpException());
+        $this->assertEquals('411', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new PreconditionFailedHttpException());
+        $this->assertEquals('412', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new PreconditionRequiredHttpException());
+        $this->assertEquals('428', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new ServiceUnavailableHttpException());
+        $this->assertEquals('503', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new TooManyRequestsHttpException());
+        $this->assertEquals('429', $flattened->getStatusCode());
+
+        $flattened = FlattenException::create(new UnsupportedMediaTypeHttpException());
+        $this->assertEquals('415', $flattened->getStatusCode());
+
+        if (class_exists(SuspiciousOperationException::class)) {
+            $flattened = FlattenException::create(new SuspiciousOperationException());
+            $this->assertEquals('400', $flattened->getStatusCode());
+        }
+    }
+
+    public function testHeadersForHttpException()
+    {
+        $flattened = FlattenException::create(new MethodNotAllowedHttpException(array('POST')));
+        $this->assertEquals(array('Allow' => 'POST'), $flattened->getHeaders());
+
+        $flattened = FlattenException::create(new UnauthorizedHttpException('Basic realm="My Realm"'));
+        $this->assertEquals(array('WWW-Authenticate' => 'Basic realm="My Realm"'), $flattened->getHeaders());
+
+        $flattened = FlattenException::create(new ServiceUnavailableHttpException('Fri, 31 Dec 1999 23:59:59 GMT'));
+        $this->assertEquals(array('Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'), $flattened->getHeaders());
+
+        $flattened = FlattenException::create(new ServiceUnavailableHttpException(120));
+        $this->assertEquals(array('Retry-After' => 120), $flattened->getHeaders());
+
+        $flattened = FlattenException::create(new TooManyRequestsHttpException('Fri, 31 Dec 1999 23:59:59 GMT'));
+        $this->assertEquals(array('Retry-After' => 'Fri, 31 Dec 1999 23:59:59 GMT'), $flattened->getHeaders());
+
+        $flattened = FlattenException::create(new TooManyRequestsHttpException(120));
+        $this->assertEquals(array('Retry-After' => 120), $flattened->getHeaders());
+    }
+
+    /**
+     * @dataProvider flattenDataProvider
+     */
+    public function testFlattenHttpException(\Exception $exception, $statusCode)
+    {
+        $flattened = FlattenException::create($exception);
+        $flattened2 = FlattenException::create($exception);
+
+        $flattened->setPrevious($flattened2);
+
+        $this->assertEquals($exception->getMessage(), $flattened->getMessage(), 'The message is copied from the original exception.');
+        $this->assertEquals($exception->getCode(), $flattened->getCode(), 'The code is copied from the original exception.');
+        $this->assertInstanceOf($flattened->getClass(), $exception, 'The class is set to the class of the original exception');
+    }
+
+    /**
+     * @dataProvider flattenDataProvider
+     */
+    public function testPrevious(\Exception $exception, $statusCode)
+    {
+        $flattened = FlattenException::create($exception);
+        $flattened2 = FlattenException::create($exception);
+
+        $flattened->setPrevious($flattened2);
+
+        $this->assertSame($flattened2, $flattened->getPrevious());
+
+        $this->assertSame(array($flattened2), $flattened->getAllPrevious());
+    }
+
+    /**
+     * @requires PHP 7.0
+     */
+    public function testPreviousError()
+    {
+        $exception = new \Exception('test', 123, new \ParseError('Oh noes!', 42));
+
+        $flattened = FlattenException::create($exception)->getPrevious();
+
+        $this->assertEquals($flattened->getMessage(), 'Parse error: Oh noes!', 'The message is copied from the original exception.');
+        $this->assertEquals($flattened->getCode(), 42, 'The code is copied from the original exception.');
+        $this->assertEquals($flattened->getClass(), 'Symfony\Component\Debug\Exception\FatalThrowableError', 'The class is set to the class of the original exception');
+    }
+
+    /**
+     * @dataProvider flattenDataProvider
+     */
+    public function testLine(\Exception $exception)
+    {
+        $flattened = FlattenException::create($exception);
+        $this->assertSame($exception->getLine(), $flattened->getLine());
+    }
+
+    /**
+     * @dataProvider flattenDataProvider
+     */
+    public function testFile(\Exception $exception)
+    {
+        $flattened = FlattenException::create($exception);
+        $this->assertSame($exception->getFile(), $flattened->getFile());
+    }
+
+    /**
+     * @dataProvider flattenDataProvider
+     */
+    public function testToArray(\Exception $exception, $statusCode)
+    {
+        $flattened = FlattenException::create($exception);
+        $flattened->setTrace(array(), 'foo.php', 123);
+
+        $this->assertEquals(array(
+            array(
+                'message' => 'test',
+                'class' => 'Exception',
+                'trace' => array(array(
+                    'namespace' => '', 'short_class' => '', 'class' => '', 'type' => '', 'function' => '', 'file' => 'foo.php', 'line' => 123,
+                    'args' => array(),
+                )),
+            ),
+        ), $flattened->toArray());
+    }
+
+    public function flattenDataProvider()
+    {
+        return array(
+            array(new \Exception('test', 123), 500),
+        );
+    }
+
+    public function testArguments()
+    {
+        $dh = opendir(__DIR__);
+        $fh = tmpfile();
+
+        $incomplete = unserialize('O:14:"BogusTestClass":0:{}');
+
+        $exception = $this->createException(array(
+            (object) array('foo' => 1),
+            new NotFoundHttpException(),
+            $incomplete,
+            $dh,
+            $fh,
+            function () {},
+            array(1, 2),
+            array('foo' => 123),
+            null,
+            true,
+            false,
+            0,
+            0.0,
+            '0',
+            '',
+            INF,
+            NAN,
+        ));
+
+        $flattened = FlattenException::create($exception);
+        $trace = $flattened->getTrace();
+        $args = $trace[1]['args'];
+        $array = $args[0][1];
+
+        closedir($dh);
+        fclose($fh);
+
+        $i = 0;
+        $this->assertSame(array('object', 'stdClass'), $array[$i++]);
+        $this->assertSame(array('object', 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException'), $array[$i++]);
+        $this->assertSame(array('incomplete-object', 'BogusTestClass'), $array[$i++]);
+        $this->assertSame(array('resource', defined('HHVM_VERSION') ? 'Directory' : 'stream'), $array[$i++]);
+        $this->assertSame(array('resource', 'stream'), $array[$i++]);
+
+        $args = $array[$i++];
+        $this->assertSame($args[0], 'object');
+        $this->assertTrue('Closure' === $args[1] || is_subclass_of($args[1], '\Closure'), 'Expect object class name to be Closure or a subclass of Closure.');
+
+        $this->assertSame(array('array', array(array('integer', 1), array('integer', 2))), $array[$i++]);
+        $this->assertSame(array('array', array('foo' => array('integer', 123))), $array[$i++]);
+        $this->assertSame(array('null', null), $array[$i++]);
+        $this->assertSame(array('boolean', true), $array[$i++]);
+        $this->assertSame(array('boolean', false), $array[$i++]);
+        $this->assertSame(array('integer', 0), $array[$i++]);
+        $this->assertSame(array('float', 0.0), $array[$i++]);
+        $this->assertSame(array('string', '0'), $array[$i++]);
+        $this->assertSame(array('string', ''), $array[$i++]);
+        $this->assertSame(array('float', INF), $array[$i++]);
+
+        // assertEquals() does not like NAN values.
+        $this->assertEquals($array[$i][0], 'float');
+        $this->assertTrue(is_nan($array[$i++][1]));
+    }
+
+    public function testRecursionInArguments()
+    {
+        $a = array('foo', array(2, &$a));
+        $exception = $this->createException($a);
+
+        $flattened = FlattenException::create($exception);
+        $trace = $flattened->getTrace();
+        $this->assertContains('*DEEP NESTED ARRAY*', serialize($trace));
+    }
+
+    public function testTooBigArray()
+    {
+        $a = array();
+        for ($i = 0; $i < 20; ++$i) {
+            for ($j = 0; $j < 50; ++$j) {
+                for ($k = 0; $k < 10; ++$k) {
+                    $a[$i][$j][$k] = 'value';
+                }
+            }
+        }
+        $a[20] = 'value';
+        $a[21] = 'value1';
+        $exception = $this->createException($a);
+
+        $flattened = FlattenException::create($exception);
+        $trace = $flattened->getTrace();
+
+        $this->assertSame($trace[1]['args'][0], array('array', array('array', '*SKIPPED over 10000 entries*')));
+
+        $serializeTrace = serialize($trace);
+
+        $this->assertContains('*SKIPPED over 10000 entries*', $serializeTrace);
+        $this->assertNotContains('*value1*', $serializeTrace);
+    }
+
+    private function createException($foo)
+    {
+        return new \Exception();
+    }
+}