diff --git a/actions/runner_test.go b/actions/runner_test.go
index aea55f1a..92ef52ce 100644
--- a/actions/runner_test.go
+++ b/actions/runner_test.go
@@ -24,6 +24,7 @@ func TestRunEvent(t *testing.T) {
 		{"regex.workflow", "push", "exit with `NEUTRAL`: 78"},
 		{"gitref.workflow", "push", ""},
 		{"env.workflow", "push", ""},
+		{"detect_event.workflow", "", ""},
 	}
 	log.SetLevel(log.DebugLevel)
 
diff --git a/actions/testdata/detect_event.workflow b/actions/testdata/detect_event.workflow
new file mode 100644
index 00000000..a693395a
--- /dev/null
+++ b/actions/testdata/detect_event.workflow
@@ -0,0 +1,9 @@
+workflow "detect-event" {
+  on = "pull_request"
+  resolves = ["build"]
+}
+
+action "build" {
+  uses = "./action1"
+  args = "echo 'build'"
+}
\ No newline at end of file