diff --git a/composer.json b/composer.json
index 5d05d692..755a501e 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,7 @@
 	},
 
 	"require-dev" : {
-		"phpunit/phpunit" : "5.*"
+		"phpunit/phpunit" : "6.*"
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 	"vendor-copy": {
diff --git a/composer.lock b/composer.lock
index 13ea9fab..8f417a0d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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     ],
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+    "content-hash": "ca673d1ec39051720ade02039e5e2b4e",
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@@ -97,34 +97,12 @@
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                 "reference": "774576308e8a25aa9d68b7fe3069b79543992d7a",
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-                    "jquery.metadata.js",
-                    "jquery.tablesorter.min.js"
-                ],
-                "bower-asset-ignore": [
-                    "**/.*",
-                    "node_modules",
-                    "bower_components",
-                    "test",
-                    "tests"
-                ],
-                "branch-alias": {
-                    "dev-master": "2.0.5-dev"
-                }
+                "shasum": null
             },
+            "type": "bower-asset",
             "license": [
                 "MIT,GPL"
             ],
-            "description": "Flexible client-side table sorting",
-            "keywords": [
-                "client-side",
-                "sort",
-                "table"
-            ],
             "time": "2015-12-03T01:22:52+00:00"
         },
         {
@@ -286,32 +264,32 @@
     "packages-dev": [
         {
             "name": "doctrine/instantiator",
-            "version": "dev-master",
+            "version": "1.0.x-dev",
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                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda"
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
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-                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1"
+                "php": ">=5.3,<8.0-DEV"
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             "require-dev": {
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                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpunit/phpunit": "^6.2.3",
-                "squizlabs/php_codesniffer": "^3.0.2"
+                "phpunit/phpunit": "~4.0",
+                "squizlabs/php_codesniffer": "~2.0"
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             "type": "library",
             "extra": {
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+                    "dev-master": "1.0.x-dev"
                 }
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             "autoload": {
@@ -336,7 +314,7 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2017-07-22T11:58:36+00:00"
+            "time": "2015-06-14T21:17:01+00:00"
         },
         {
             "name": "myclabs/deep-copy",
@@ -380,6 +358,108 @@
             ],
             "time": "2017-04-12T18:52:22+00:00"
         },
+        {
+            "name": "phar-io/manifest",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phar-io/manifest.git",
+                "reference": "014feadb268809af7c8e2f7ccd396b8494901f58"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phar-io/manifest/zipball/014feadb268809af7c8e2f7ccd396b8494901f58",
+                "reference": "014feadb268809af7c8e2f7ccd396b8494901f58",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "ext-phar": "*",
+                "phar-io/version": "^1.0.1",
+                "php": "^5.6 || ^7.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Heuer",
+                    "email": "sebastian@phpeople.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Component for reading phar.io manifest information from a PHP Archive (PHAR)",
+            "time": "2017-04-07T07:07:10+00:00"
+        },
+        {
+            "name": "phar-io/version",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phar-io/version.git",
+                "reference": "a70c0ced4be299a63d32fa96d9281d03e94041df"
+            },
+            "dist": {
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+                "url": "https://api.github.com/repos/phar-io/version/zipball/a70c0ced4be299a63d32fa96d9281d03e94041df",
+                "reference": "a70c0ced4be299a63d32fa96d9281d03e94041df",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.6 || ^7.0"
+            },
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+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Heuer",
+                    "email": "sebastian@phpeople.de",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Library for handling version information and constraints",
+            "time": "2017-03-05T17:38:23+00:00"
+        },
         {
             "name": "phpdocumentor/reflection-common",
             "version": "dev-master",
@@ -591,40 +671,41 @@
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "4.0.x-dev",
+            "version": "dev-master",
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                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "ef7b2f56815df854e66ceaee8ebe9393ae36a40d"
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-                "reference": "ef7b2f56815df854e66ceaee8ebe9393ae36a40d",
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-                "sebastian/environment": "^1.3.2 || ^2.0",
-                "sebastian/version": "^1.0 || ^2.0"
+                "php": "^7.0",
+                "phpunit/php-file-iterator": "^1.4.2",
+                "phpunit/php-text-template": "^1.2.1",
+                "phpunit/php-token-stream": "^2.0",
+                "sebastian/code-unit-reverse-lookup": "^1.0.1",
+                "sebastian/environment": "^3.0",
+                "sebastian/version": "^2.0.1",
+                "theseer/tokenizer": "^1.1"
             },
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-                "phpunit/phpunit": "^5.7"
+                "ext-xdebug": "^2.5",
+                "phpunit/phpunit": "^6.0"
             },
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+                    "dev-master": "5.2.x-dev"
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@@ -650,7 +731,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2017-04-02T07:44:40+00:00"
+            "time": "2017-08-25T06:32:04+00:00"
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@@ -840,16 +921,16 @@
         },
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-            "version": "5.7.x-dev",
+            "version": "dev-master",
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                 "url": "https://github.com/sebastianbergmann/phpunit.git",
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@@ -858,33 +939,35 @@
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-                "sebastian/resource-operations": "~1.0",
-                "sebastian/version": "~1.0.3|~2.0",
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+                "phar-io/manifest": "^1.0.1",
+                "phar-io/version": "^1.0",
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+                "phpspec/prophecy": "^1.7",
+                "phpunit/php-code-coverage": "^5.2.2",
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+                "sebastian/diff": "^2.0",
+                "sebastian/environment": "^3.1",
+                "sebastian/exporter": "^3.1",
+                "sebastian/global-state": "^2.0",
+                "sebastian/object-enumerator": "^3.0.3",
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@@ -892,7 +975,7 @@
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@@ -918,33 +1001,33 @@
                 "testing",
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-            "time": "2017-09-01T08:38:37+00:00"
+            "time": "2017-09-01T08:39:38+00:00"
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         {
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-                "php": "^5.6 || ^7.0",
-                "phpunit/php-text-template": "^1.2",
-                "sebastian/exporter": "^1.2 || ^2.0"
+                "doctrine/instantiator": "^1.0.5",
+                "php": "^7.0",
+                "phpunit/php-text-template": "^1.2.1",
+                "sebastian/exporter": "^3.0"
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             "conflict": {
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+                "phpunit/phpunit": "<6.0"
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+                "phpunit/phpunit": "^6.0"
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@@ -952,7 +1035,7 @@
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@@ -977,7 +1060,7 @@
                 "mock",
                 "xunit"
             ],
-            "time": "2017-06-30T09:13:00+00:00"
+            "time": "2017-08-03T14:08:16+00:00"
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         {
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@@ -1026,30 +1109,30 @@
         },
         {
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-            "version": "1.2.x-dev",
+            "version": "dev-master",
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                 "url": "https://github.com/sebastianbergmann/comparator.git",
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-                "reference": "18a5d97c25f408f48acaf6d1b9f4079314c5996a",
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-                "php": ">=5.3.3",
-                "sebastian/diff": "~1.2",
-                "sebastian/exporter": "~1.2 || ~2.0"
+                "php": "^7.0",
+                "sebastian/diff": "^2.0",
+                "sebastian/exporter": "^3.0"
             },
             "require-dev": {
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+                "phpunit/phpunit": "^6.0"
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@@ -1080,38 +1163,38 @@
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-            "homepage": "http://www.github.com/sebastianbergmann/comparator",
+            "homepage": "https://github.com/sebastianbergmann/comparator",
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-            "time": "2017-03-07T10:34:43+00:00"
+            "time": "2017-08-20T14:03:32+00:00"
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@@ -1138,32 +1221,32 @@
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@@ -1188,34 +1271,34 @@
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-            "time": "2016-11-26T07:53:53+00:00"
+            "time": "2017-07-01T08:51:00+00:00"
         },
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-            "version": "2.0.x-dev",
+            "version": "dev-master",
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                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/exporter.git",
-                "reference": "5e8e30670c3f36481e75211dbbcfd029a41ebf07"
+                "reference": "234199f4528de6d12aaa58b612e98f7d36adb937"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/5e8e30670c3f36481e75211dbbcfd029a41ebf07",
-                "reference": "5e8e30670c3f36481e75211dbbcfd029a41ebf07",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/234199f4528de6d12aaa58b612e98f7d36adb937",
+                "reference": "234199f4528de6d12aaa58b612e98f7d36adb937",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.3 || ^7.0",
-                "sebastian/recursion-context": "^2.0"
+                "php": "^7.0",
+                "sebastian/recursion-context": "^3.0"
             },
             "require-dev": {
                 "ext-mbstring": "*",
-                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
+                "phpunit/phpunit": "^6.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "3.1.x-dev"
                 }
             },
             "autoload": {
@@ -1255,27 +1338,27 @@
                 "export",
                 "exporter"
             ],
-            "time": "2017-03-07T10:36:49+00:00"
+            "time": "2017-04-03T13:19:02+00:00"
         },
         {
             "name": "sebastian/global-state",
-            "version": "1.1.x-dev",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "cea85a84b00f2795341ebbbca4fa396347f2494e"
+                "reference": "e8ba02eed7bbbb9e59e43dedd3dddeff4a56b0c4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/cea85a84b00f2795341ebbbca4fa396347f2494e",
-                "reference": "cea85a84b00f2795341ebbbca4fa396347f2494e",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/e8ba02eed7bbbb9e59e43dedd3dddeff4a56b0c4",
+                "reference": "e8ba02eed7bbbb9e59e43dedd3dddeff4a56b0c4",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": "^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.2|~5.0"
+                "phpunit/phpunit": "^6.0"
             },
             "suggest": {
                 "ext-uopz": "*"
@@ -1283,7 +1366,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0-dev"
+                    "dev-master": "2.0-dev"
                 }
             },
             "autoload": {
@@ -1306,33 +1389,34 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2017-02-23T14:11:06+00:00"
+            "time": "2017-04-27T15:39:26+00:00"
         },
         {
             "name": "sebastian/object-enumerator",
-            "version": "2.0.x-dev",
+            "version": "dev-master",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/object-enumerator.git",
-                "reference": "c956fe7a68318639f694fc6bba0c89b7cdf1b08c"
+                "reference": "7cfd9e65d11ffb5af41198476395774d4c8a84c5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/c956fe7a68318639f694fc6bba0c89b7cdf1b08c",
-                "reference": "c956fe7a68318639f694fc6bba0c89b7cdf1b08c",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/7cfd9e65d11ffb5af41198476395774d4c8a84c5",
+                "reference": "7cfd9e65d11ffb5af41198476395774d4c8a84c5",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.6 || ^7.0",
-                "sebastian/recursion-context": "^2.0"
+                "php": "^7.0",
+                "sebastian/object-reflector": "^1.1.1",
+                "sebastian/recursion-context": "^3.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^5.7"
+                "phpunit/phpunit": "^6.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "3.0.x-dev"
                 }
             },
             "autoload": {
@@ -1352,32 +1436,77 @@
             ],
             "description": "Traverses array structures and object graphs to enumerate all referenced objects",
             "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
-            "time": "2017-03-07T10:37:45+00:00"
+            "time": "2017-08-03T12:35:26+00:00"
         },
         {
-            "name": "sebastian/recursion-context",
-            "version": "2.0.x-dev",
+            "name": "sebastian/object-reflector",
+            "version": "dev-master",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/recursion-context.git",
-                "reference": "7e4d7c56f6e65d215f71ad913a5256e5439aca1c"
+                "url": "https://github.com/sebastianbergmann/object-reflector.git",
+                "reference": "773f97c67f28de00d397be301821b06708fca0be"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/7e4d7c56f6e65d215f71ad913a5256e5439aca1c",
-                "reference": "7e4d7c56f6e65d215f71ad913a5256e5439aca1c",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-reflector/zipball/773f97c67f28de00d397be301821b06708fca0be",
+                "reference": "773f97c67f28de00d397be301821b06708fca0be",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": "^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.4"
+                "phpunit/phpunit": "^6.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "1.1-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Allows reflection of object attributes, including inherited and non-public ones",
+            "homepage": "https://github.com/sebastianbergmann/object-reflector/",
+            "time": "2017-03-29T09:07:27+00:00"
+        },
+        {
+            "name": "sebastian/recursion-context",
+            "version": "dev-master",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/recursion-context.git",
+                "reference": "a0e54bc9bf04e2c5b302236984cebc277631f0f1"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/a0e54bc9bf04e2c5b302236984cebc277631f0f1",
+                "reference": "a0e54bc9bf04e2c5b302236984cebc277631f0f1",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0.x-dev"
                 }
             },
             "autoload": {
@@ -1405,7 +1534,7 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2017-03-08T08:21:15+00:00"
+            "time": "2017-03-07T15:09:59+00:00"
         },
         {
             "name": "sebastian/resource-operations",
@@ -1493,62 +1622,44 @@
             "time": "2016-10-03T07:35:21+00:00"
         },
         {
-            "name": "symfony/yaml",
-            "version": "3.4.x-dev",
+            "name": "theseer/tokenizer",
+            "version": "1.1.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/yaml.git",
-                "reference": "a0e15688972f012156cf1ffa076fe1203bce6bc9"
+                "url": "https://github.com/theseer/tokenizer.git",
+                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/a0e15688972f012156cf1ffa076fe1203bce6bc9",
-                "reference": "a0e15688972f012156cf1ffa076fe1203bce6bc9",
+                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/cb2f008f3f05af2893a87208fe6a6c4985483f8b",
+                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.5.9|>=7.0.8"
-            },
-            "conflict": {
-                "symfony/console": "<3.4"
-            },
-            "require-dev": {
-                "symfony/console": "~3.4|~4.0"
-            },
-            "suggest": {
-                "symfony/console": "For validating YAML files using the lint command"
+                "ext-dom": "*",
+                "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
+                "php": "^7.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.4-dev"
-                }
-            },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\Yaml\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
                 }
             ],
-            "description": "Symfony Yaml Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-09-17T10:10:45+00:00"
+            "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
+            "time": "2017-04-07T12:08:54+00:00"
         },
         {
             "name": "webmozart/assert",
diff --git a/ext/regen_thumb/test.php b/ext/regen_thumb/test.php
index 417b35c7..d8806e87 100644
--- a/ext/regen_thumb/test.php
+++ b/ext/regen_thumb/test.php
@@ -5,8 +5,7 @@ class RegenThumbTest extends ShimmiePHPUnitTestCase {
 		$image_id = $this->post_image("tests/pbx_screenshot.jpg", "pbx computer screenshot");
 		$this->get_page("post/view/$image_id");
 
-		$_POST['image_id'] = $image_id;
-		$this->get_page("regen_thumb/one");
+		$this->post_page("regen_thumb/one", ['image_id'=>$image_id]);
 		$this->assert_title("Thumbnail Regenerated");
 
 		# FIXME: test that the thumb's modified time has been updated
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 961c0c0b..2ea48b43 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -16,8 +16,7 @@ if(is_null(User::by_name("demo"))) {
 	$userPage->onUserCreation(new UserCreationEvent("test", "test", ""));
 }
 
-abstract class ShimmiePHPUnitTestCase extends \PHPUnit_Framework_TestCase {
-	protected $backupGlobalsBlacklist = array('database', 'config');
+abstract class ShimmiePHPUnitTestCase extends \PHPUnit\Framework\TestCase {
 	private $images = array();
 
 	public function setUp() {
@@ -45,6 +44,20 @@ abstract class ShimmiePHPUnitTestCase extends \PHPUnit_Framework_TestCase {
 		global $page;
 		if(!$args) $args = array();
 		$_GET = $args;
+		$_POST = array();
+		$page = class_exists("CustomPage") ? new CustomPage() : new Page();
+		send_event(new PageRequestEvent($page_name));
+		if($page->mode == "redirect") {
+			$page->code = 302;
+		}
+	}
+
+	protected function post_page($page_name, $args=null) {
+		// use a fresh page
+		global $page;
+		if(!$args) $args = array();
+		$_GET = array();
+		$_POST = $args;
 		$page = class_exists("CustomPage") ? new CustomPage() : new Page();
 		send_event(new PageRequestEvent($page_name));
 		if($page->mode == "redirect") {