diff --git a/test/HandleTest.php b/test/HandleTest.php
index 517c5b8..2fcfe0c 100644
--- a/test/HandleTest.php
+++ b/test/HandleTest.php
@@ -56,6 +56,8 @@ abstract class HandleTest extends TestCase {
             }
 
             $this->assertSame((yield file\get(__FILE__)), $contents);
+
+            yield $handle->close();
         });
     }
 
@@ -73,6 +75,8 @@ abstract class HandleTest extends TestCase {
 
             $expected = \substr((yield file\get(__FILE__)), 0, 20);
             $this->assertSame($expected, $contents);
+
+            yield $handle->close();
         });
     }
 
@@ -86,6 +90,8 @@ abstract class HandleTest extends TestCase {
             $this->assertSame(100, $handle->tell());
             $expected = \substr((yield file\get(__FILE__)), 10, 90);
             $this->assertSame($expected, $chunk);
+
+            yield $handle->close();
         });
     }
 
@@ -94,8 +100,12 @@ abstract class HandleTest extends TestCase {
      */
     public function testSeekThrowsOnInvalidWhence() {
         $this->lRun(function () {
-            $handle = (yield file\open(__FILE__, "r"));
-            yield $handle->seek(0, 99999);
+            try {
+                $handle = (yield file\open(__FILE__, "r"));
+                yield $handle->seek(0, 99999);
+            } finally {
+                yield $handle->close();
+            }
         });
     }
 
@@ -107,6 +117,7 @@ abstract class HandleTest extends TestCase {
             $this->assertSame(10, $handle->tell());
             yield $handle->seek(-10, \SEEK_CUR);
             $this->assertSame(0, $handle->tell());
+            yield $handle->close();
         });
     }
 
@@ -117,6 +128,7 @@ abstract class HandleTest extends TestCase {
             $this->assertSame(0, $handle->tell());
             yield $handle->seek(-10, \SEEK_END);
             $this->assertSame($size - 10, $handle->tell());
+            yield $handle->close();
         });
     }
 
@@ -124,6 +136,7 @@ abstract class HandleTest extends TestCase {
         $this->lRun(function () {
             $handle = (yield file\open(__FILE__, "r"));
             $this->assertSame(__FILE__, $handle->path());
+            yield $handle->close();
         });
     }
 
@@ -131,6 +144,7 @@ abstract class HandleTest extends TestCase {
         $this->lRun(function () {
             $handle = (yield file\open(__FILE__, "r"));
             $this->assertSame("r", $handle->mode());
+            yield $handle->close();
         });
     }
 
diff --git a/test/ParallelDriverTest.php b/test/ParallelDriverTest.php
index 5dc7723..8cdb5fc 100644
--- a/test/ParallelDriverTest.php
+++ b/test/ParallelDriverTest.php
@@ -2,28 +2,21 @@
 
 namespace Amp\File\Test;
 
+use Amp\File;
 use Amp\Loop;
 use Amp\Parallel\Worker\DefaultPool;
+use function Amp\call;
 
 class ParallelDriverTest extends DriverTest {
-    /** @var \Amp\Parallel\Worker\Pool */
-    private $pool;
-
-    public function setUp() {
-        $this->pool = new DefaultPool;
-        $this->pool->start();
-    }
-
-    public function tearDown() {
-        Loop::run(function () {
-            yield $this->pool->shutdown();
-        });
-    }
-
     protected function lRun(callable $cb) {
-        \Amp\Loop::run(function() use ($cb) {
-            \Amp\File\filesystem(new \Amp\File\ParallelDriver($this->pool));
-            \Amp\Promise\rethrow(new \Amp\Coroutine($cb()));
+        Loop::run(function() use ($cb) {
+            $pool = new DefaultPool;
+            $pool->start();
+
+            File\filesystem(new File\ParallelDriver($pool));
+            yield call($cb);
+
+            yield $pool->shutdown();
         });
     }
 }
diff --git a/test/ParallelHandleTest.php b/test/ParallelHandleTest.php
index 6d98d42..cde0f47 100644
--- a/test/ParallelHandleTest.php
+++ b/test/ParallelHandleTest.php
@@ -2,28 +2,21 @@
 
 namespace Amp\File\Test;
 
+use Amp\File;
 use Amp\Loop;
 use Amp\Parallel\Worker\DefaultPool;
+use function Amp\call;
 
 class ParallelHandleTest extends HandleTest {
-    /** @var \Amp\Parallel\Worker\Pool */
-    private $pool;
-
-    public function setUp() {
-        $this->pool = new DefaultPool;
-        $this->pool->start();
-    }
-
-    public function tearDown() {
-        Loop::run(function () {
-            yield $this->pool->shutdown();
-        });
-    }
-
     protected function lRun(callable $cb) {
-        \Amp\Loop::run(function() use ($cb) {
-            \Amp\File\filesystem(new \Amp\File\ParallelDriver($this->pool));
-            \Amp\Promise\rethrow(new \Amp\Coroutine($cb()));
+        Loop::run(function() use ($cb) {
+            $pool = new DefaultPool;
+            $pool->start();
+
+            File\filesystem(new File\ParallelDriver($pool));
+            yield call($cb);
+
+            yield $pool->shutdown();
         });
     }
 }