* add phpunit as a dev dependency

 * add some basic tests for UrlHelper::rewrite_relative()
 * fix UrlHelper::rewrite_relative() to work better on non-absolute
   relative URL paths

10 files changed, 351 insertions, 0 deletions

diff --git a/vendor/sebastian/object-enumerator/.psalm/baseline.xml b/vendor/sebastian/object-enumerator/.psalm/baseline.xml
new file mode 100644
index 000000000..180b3f803
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/.psalm/baseline.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<files psalm-version="4.0.1@b1e2e30026936ef8d5bf6a354d1c3959b6231f44">
+  <file src="src/Enumerator.php">
+    <DocblockTypeContradiction occurrences="2">
+      <code>!is_array($variable) &amp;&amp; !is_object($variable)</code>
+      <code>is_object($variable)</code>
+    </DocblockTypeContradiction>
+  </file>
+</files>
diff --git a/vendor/sebastian/object-enumerator/.psalm/config.xml b/vendor/sebastian/object-enumerator/.psalm/config.xml
new file mode 100644
index 000000000..2a4b16f22
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/.psalm/config.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<psalm
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+    resolveFromConfigFile="false"
+    totallyTyped="false"
+    errorBaseline=".psalm/baseline.xml"
+>
+    <projectFiles>
+        <directory name="src" />
+        <ignoreFiles>
+            <directory name="vendor" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>
diff --git a/vendor/sebastian/object-enumerator/ChangeLog.md b/vendor/sebastian/object-enumerator/ChangeLog.md
new file mode 100644
index 000000000..886554189
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/ChangeLog.md
@@ -0,0 +1,88 @@
+# Change Log
+
+All notable changes to `sebastianbergmann/object-enumerator` are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
+
+## [4.0.4] - 2020-10-26
+
+### Fixed
+
+* `SebastianBergmann\ObjectEnumerator\Exception` now correctly extends `\Throwable`
+
+## [4.0.3] - 2020-09-28
+
+### Changed
+
+* Changed PHP version constraint in `composer.json` from `^7.3 || ^8.0` to `>=7.3`
+
+## [4.0.2] - 2020-06-26
+
+### Added
+
+* This component is now supported on PHP 8
+
+## [4.0.1] - 2020-06-15
+
+### Changed
+
+* Tests etc. are now ignored for archive exports
+
+## [4.0.0] - 2020-02-07
+
+### Removed
+
+* This component is no longer supported on PHP 7.0, PHP 7.1, and PHP 7.2
+
+## [3.0.3] - 2017-08-03
+
+### Changed
+
+* Bumped required version of `sebastian/object-reflector`
+
+## [3.0.2] - 2017-03-12
+
+### Changed
+
+* `sebastian/object-reflector` is now a dependency
+
+## [3.0.1] - 2017-03-12
+
+### Fixed
+
+* Objects aggregated in inherited attributes are not enumerated
+
+## [3.0.0] - 2017-03-03
+
+### Removed
+
+* This component is no longer supported on PHP 5.6
+
+## [2.0.1] - 2017-02-18
+
+### Fixed
+
+* Fixed [#2](https://github.com/sebastianbergmann/phpunit/pull/2): Exceptions in `ReflectionProperty::getValue()` are not handled
+
+## [2.0.0] - 2016-11-19
+
+### Changed
+
+* This component is now compatible with `sebastian/recursion-context: ~1.0.4`
+
+## 1.0.0 - 2016-02-04
+
+### Added
+
+* Initial release
+
+[4.0.4]: https://github.com/sebastianbergmann/object-enumerator/compare/4.0.3...4.0.4
+[4.0.3]: https://github.com/sebastianbergmann/object-enumerator/compare/4.0.2...4.0.3
+[4.0.2]: https://github.com/sebastianbergmann/object-enumerator/compare/4.0.1...4.0.2
+[4.0.1]: https://github.com/sebastianbergmann/object-enumerator/compare/4.0.0...4.0.1
+[4.0.0]: https://github.com/sebastianbergmann/object-enumerator/compare/3.0.3...4.0.0
+[3.0.3]: https://github.com/sebastianbergmann/object-enumerator/compare/3.0.2...3.0.3
+[3.0.2]: https://github.com/sebastianbergmann/object-enumerator/compare/3.0.1...3.0.2
+[3.0.1]: https://github.com/sebastianbergmann/object-enumerator/compare/3.0.0...3.0.1
+[3.0.0]: https://github.com/sebastianbergmann/object-enumerator/compare/2.0...3.0.0
+[2.0.1]: https://github.com/sebastianbergmann/object-enumerator/compare/2.0.0...2.0.1
+[2.0.0]: https://github.com/sebastianbergmann/object-enumerator/compare/1.0...2.0.0
+
diff --git a/vendor/sebastian/object-enumerator/LICENSE b/vendor/sebastian/object-enumerator/LICENSE
new file mode 100644
index 000000000..1389ad396
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/LICENSE
@@ -0,0 +1,33 @@
+Object Enumerator
+
+Copyright (c) 2016-2020, Sebastian Bergmann <[email protected]>.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+
+ * Neither the name of Sebastian Bergmann nor the names of his
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/sebastian/object-enumerator/README.md b/vendor/sebastian/object-enumerator/README.md
new file mode 100644
index 000000000..afca0177b
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/README.md
@@ -0,0 +1,20 @@
+# sebastian/object-enumerator
+
+[![CI Status](https://github.com/sebastianbergmann/object-enumerator/workflows/CI/badge.svg)](https://github.com/sebastianbergmann/object-enumerator/actions)
+[![Type Coverage](https://shepherd.dev/github/sebastianbergmann/object-enumerator/coverage.svg)](https://shepherd.dev/github/sebastianbergmann/object-enumerator)
+
+Traverses array structures and object graphs to enumerate all referenced objects.
+
+## Installation
+
+You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):
+
+```
+composer require sebastian/object-enumerator
+```
+
+If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:
+
+```
+composer require --dev sebastian/object-enumerator
+```
diff --git a/vendor/sebastian/object-enumerator/composer.json b/vendor/sebastian/object-enumerator/composer.json
new file mode 100644
index 000000000..d68a21330
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/composer.json
@@ -0,0 +1,43 @@
+{
+    "name": "sebastian/object-enumerator",
+    "description": "Traverses array structures and object graphs to enumerate all referenced objects",
+    "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
+    "license": "BSD-3-Clause",
+    "authors": [
+        {
+            "name": "Sebastian Bergmann",
+            "email": "[email protected]"
+        }
+    ],
+    "prefer-stable": true,
+    "config": {
+        "platform": {
+            "php": "7.3.0"
+        },
+        "optimize-autoloader": true,
+        "sort-packages": true
+    },
+    "require": {
+        "php": ">=7.3",
+        "sebastian/object-reflector": "^2.0",
+        "sebastian/recursion-context": "^4.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.3"
+    },
+    "autoload": {
+        "classmap": [
+            "src/"
+        ]
+    },
+    "autoload-dev": {
+        "classmap": [
+            "tests/_fixture/"
+        ]
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "4.0-dev"
+        }
+    }
+}
diff --git a/vendor/sebastian/object-enumerator/phpunit.xml b/vendor/sebastian/object-enumerator/phpunit.xml
new file mode 100644
index 000000000..7be976b13
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/phpunit.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         executionOrder="depends,defects"
+         forceCoversAnnotation="true"
+         beStrictAboutCoversAnnotation="true"
+         beStrictAboutOutputDuringTests="true"
+         beStrictAboutTodoAnnotatedTests="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         verbose="true">
+    <testsuites>
+        <testsuite name="default">
+            <directory suffix="Test.php">tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage processUncoveredFiles="true">
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+    </coverage>
+</phpunit>
diff --git a/vendor/sebastian/object-enumerator/src/Enumerator.php b/vendor/sebastian/object-enumerator/src/Enumerator.php
new file mode 100644
index 000000000..de75d17c5
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/src/Enumerator.php
@@ -0,0 +1,88 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/object-enumerator.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\ObjectEnumerator;
+
+use function array_merge;
+use function func_get_args;
+use function is_array;
+use function is_object;
+use SebastianBergmann\ObjectReflector\ObjectReflector;
+use SebastianBergmann\RecursionContext\Context;
+
+/**
+ * Traverses array structures and object graphs
+ * to enumerate all referenced objects.
+ */
+class Enumerator
+{
+    /**
+     * Returns an array of all objects referenced either
+     * directly or indirectly by a variable.
+     *
+     * @param array|object $variable
+     *
+     * @return object[]
+     */
+    public function enumerate($variable)
+    {
+        if (!is_array($variable) && !is_object($variable)) {
+            throw new InvalidArgumentException;
+        }
+
+        if (isset(func_get_args()[1])) {
+            if (!func_get_args()[1] instanceof Context) {
+                throw new InvalidArgumentException;
+            }
+
+            $processed = func_get_args()[1];
+        } else {
+            $processed = new Context;
+        }
+
+        $objects = [];
+
+        if ($processed->contains($variable)) {
+            return $objects;
+        }
+
+        $array = $variable;
+        $processed->add($variable);
+
+        if (is_array($variable)) {
+            foreach ($array as $element) {
+                if (!is_array($element) && !is_object($element)) {
+                    continue;
+                }
+
+                $objects = array_merge(
+                    $objects,
+                    $this->enumerate($element, $processed)
+                );
+            }
+        } else {
+            $objects[] = $variable;
+
+            $reflector = new ObjectReflector;
+
+            foreach ($reflector->getAttributes($variable) as $value) {
+                if (!is_array($value) && !is_object($value)) {
+                    continue;
+                }
+
+                $objects = array_merge(
+                    $objects,
+                    $this->enumerate($value, $processed)
+                );
+            }
+        }
+
+        return $objects;
+    }
+}
diff --git a/vendor/sebastian/object-enumerator/src/Exception.php b/vendor/sebastian/object-enumerator/src/Exception.php
new file mode 100644
index 000000000..2f09d70aa
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/src/Exception.php
@@ -0,0 +1,16 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/object-enumerator.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\ObjectEnumerator;
+
+use Throwable;
+
+interface Exception extends Throwable
+{
+}
diff --git a/vendor/sebastian/object-enumerator/src/InvalidArgumentException.php b/vendor/sebastian/object-enumerator/src/InvalidArgumentException.php
new file mode 100644
index 000000000..ce2037cdb
--- /dev/null
+++ b/vendor/sebastian/object-enumerator/src/InvalidArgumentException.php
@@ -0,0 +1,14 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/object-enumerator.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\ObjectEnumerator;
+
+class InvalidArgumentException extends \InvalidArgumentException implements Exception
+{
+}