diff --git a/RoboFile.php b/RoboFile.php
index 119c23f..ae515db 100644
--- a/RoboFile.php
+++ b/RoboFile.php
@@ -11,18 +11,44 @@ class RoboFile extends \Robo\Tasks {
     const BASE = __DIR__.\DIRECTORY_SEPARATOR;
     const BASE_TEST = self::BASE."tests".\DIRECTORY_SEPARATOR;
 
+    /** Runs the full test suite */
     public function test(array $args): Result {
         // start the built-in PHP server, which is required for some of the tests
         $this->taskServer(8000)->host("localhost")->dir(self::BASE_TEST."docroot")->rawArg("-n")->arg(self::BASE_TEST."server.php")->background()->run();
         // run tests
-        return $this->taskPHPUnit()->configFile(self::BASE_TEST."phpunit.xml")->args($args)->run();
+        $execpath = realpath(self::BASE."vendor-bin/phpunit/vendor/phpunit/phpunit/phpunit");
+        $confpath = realpath(self::BASE_TEST."phpunit.xml");
+        return $this->taskExec("php")->arg($execpath)->option("-c", $confpath)->args($args)->run();
+    }
+
+    /** Runs a quick subset of the test suite */
+    public function testQuick(array $args): Result {
+        return $this->test(array_merge(["--exclude-group","slow"], $args));
     }
 
     public function coverage(array $args): Result {
+        // start the built-in PHP server, which is required for some of the tests
+        $this->taskServer(8000)->host("localhost")->dir(self::BASE_TEST."docroot")->rawArg("-n")->arg(self::BASE_TEST."server.php")->background()->run();
+        // run tests with code coverage reporting enabled
+        $exec = $this->findCoverageEngine();
+        $execpath = realpath(self::BASE."vendor-bin/phpunit/vendor/phpunit/phpunit/phpunit");
+        $confpath = realpath(self::BASE_TEST."phpunit.xml");
+        return $this->taskExec($exec)->arg($execpath)->option("-c", $confpath)->option("--coverage-html", self::BASE_TEST."coverage")->args($args)->run();
         // run the test suite with code coverage reporting enabled
         return $this->test(array_merge(["--coverage-html",self::BASE_TEST."coverage"], $args));
     }
 
+    protected function findCoverageEngine(): string {
+        $null = null;
+        $code = 0;
+        exec("phpdbg --version", $null, $code);
+        if (!$code) {
+            return "phpdbg -qrr";
+        } else {
+            return "php";
+        }
+    }
+
     public function package(array $args): Result {
         // establish which commit to package
         $version = $args ? $args[0] : $this->askDefault("Commit to package:", "head");
diff --git a/lib/Misc/ValueInfo.php b/lib/Misc/ValueInfo.php
index f4d765b..a025bb5 100644
--- a/lib/Misc/ValueInfo.php
+++ b/lib/Misc/ValueInfo.php
@@ -103,7 +103,7 @@ class ValueInfo {
                 } else {
                     return 0;
                 }
-                break;
+                break; // @codeCoverageIgnore
             case self::T_FLOAT:
                 if (is_float($value)) {
                     return $value;
@@ -161,7 +161,7 @@ class ValueInfo {
                 } else {
                     return (string) $value;
                 }
-                break;
+                break; // @codeCoverageIgnore
             case self::T_DATE:
                 if ($value instanceof \DateTimeImmutable) {
                     return $value->setTimezone(new \DateTimeZone("UTC"));
@@ -239,7 +239,7 @@ class ValueInfo {
                         return [$value];
                     }
                 }
-                break;
+                break; // @codeCoverageIgnore
             default:
                 throw new ExceptionType("typeUnknown", $type); // @codeCoverageIgnore
         }
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 7a4a020..628bd3d 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -8,5 +8,5 @@ namespace JKingWeb\Arsse;
 
 const NS_BASE = __NAMESPACE__."\\";
 define(NS_BASE."BASE", dirname(__DIR__).DIRECTORY_SEPARATOR);
-
+ini_set("memory_limit", "-1");
 require_once BASE."vendor".DIRECTORY_SEPARATOR."autoload.php";