1 files changed, 9 insertions, 0 deletions
diff --git a/check b/check
index f4391e08..975bfdcb 100755
--- a/check
+++ b/check
@@ -48,6 +48,15 @@ export PYTHONPATH
 
 python setup.py clean check
 
+# Run scenario tests with yarn, if yarn is available.
+
+if command -v yarn > /dev/null
+then
+    yarn -s yarns/morph.shell-lib yarns/*.yarn
+fi
+
+# cmdtest tests.
+
 HOME="$(pwd)/scripts"
 
 cmdtest tests