asyncTest (#286)

* Initial commit.

* Change name to asynctests.

chronos/unittest2/asynctests.nim

@@ -0,0 +1,19 @@
+#
+#              Chronos Unittest2 Helpers
+#             (c) Copyright 2022-Present
+#         Status Research & Development GmbH
+#
+#              Licensed under either of
+#  Apache License, version 2.0, (LICENSE-APACHEv2)
+#              MIT license (LICENSE-MIT)
+import unittest2
+import ../../chronos
+
+export unittest2, chronos
+
+template asyncTest*(name: string, body: untyped): untyped =
+  test name:
+    waitFor((
+      proc() {.async, gcsafe.} =
+        body
+    )())