diff --git a/tests/cancellation.hancho b/tests/cancellation.hancho
index 6e084df..217369a 100644
--- a/tests/cancellation.hancho
+++ b/tests/cancellation.hancho
@@ -1,9 +1,15 @@
 # tests/cancellation.hancho
 from hancho import *
 
-touch = Rule(command = "touch {files_out}")
+build_config.defaults(
+  command_path = Path.cwd(),
+  source_path  = Path.cwd(),
+  build_path   = Path.cwd() / "build",
+)
+
+touch = build_config.rule(command = "touch {rel_build_files}")
 
-fail = Rule(command = "(exit 255)")
+fail = build_config.rule(command = "(exit 255)")
 
 task_that_fails  = fail ([], "fail_result.txt")
 task_that_passes = touch([], "pass_result.txt")
diff --git a/tests/run_tests.py b/tests/run_tests.py
index 743ba2b..c8e607e 100755
--- a/tests/run_tests.py
+++ b/tests/run_tests.py
@@ -240,18 +240,18 @@ def test_arbitrary_flags(self):
         )
         self.assertTrue(path.exists("build/some/other/dir/result.txt"))
 
-#    def test_sync_command(self):
-#        """The 'command' field of rules should be OK handling a sync function"""
-#        run_hancho("sync_command")
-#        self.assertTrue(path.exists("build/result.txt"))
-#
-#    def test_cancellation(self):
-#        """A task that receives a cancellation exception should not run."""
-#        self.assertNotEqual(0, run_hancho("cancellation"))
-#        self.assertTrue(Path("build/pass_result.txt").exists())
-#        self.assertFalse(Path("build/fail_result.txt").exists())
-#        self.assertFalse(Path("build/should_not_be_created.txt").exists())
-#
+    def test_sync_command(self):
+        """The 'command' field of rules should be OK handling a sync function"""
+        run_hancho("sync_command")
+        self.assertTrue(path.exists("build/result.txt"))
+
+    def test_cancellation(self):
+        """A task that receives a cancellation exception should not run."""
+        self.assertNotEqual(0, run_hancho("cancellation"))
+        self.assertTrue(Path("build/pass_result.txt").exists())
+        self.assertFalse(Path("build/fail_result.txt").exists())
+        self.assertFalse(Path("build/should_not_be_created.txt").exists())
+
 #    def test_task_creates_task(self):
 #        """Tasks using callbacks can create new tasks when they run."""
 #        self.assertEqual(0, run_hancho("task_creates_task"))
diff --git a/tests/sync_command.hancho b/tests/sync_command.hancho
index b1184cf..980d67d 100644
--- a/tests/sync_command.hancho
+++ b/tests/sync_command.hancho
@@ -1,11 +1,14 @@
 from hancho import *
 
-def sync_command(task):
-  Path(task.files_out[0]).touch()
-  return task.files_out
-
-rule = Rule(
-  command = sync_command
+build_config.defaults(
+  command_path = Path.cwd(),
+  source_path  = Path.cwd(),
+  build_path   = Path.cwd() / "build",
 )
 
+def sync_command(task):
+  Path(task.abs_build_files[0]).touch()
+  return task.abs_build_files
+
+rule = build_config.rule(command = sync_command)
 rule(__file__, "result.txt")