fix: added e2e test

Signed-off-by: isubasinghe <isitha@pipekit.io>

test/e2e/expr_lang.go

@@ -0,0 +1,67 @@
+//go:build functional
+// +build functional
+
+package e2e
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/argoproj/argo-workflows/v3/test/e2e/fixtures"
+	"github.com/stretchr/testify/suite"
+	"gotest.tools/v3/assert"
+	v1 "k8s.io/client-go/applyconfigurations/meta/v1"
+)
+
+type ExprSuite struct {
+	fixtures.E2ESuite
+}
+
+func (s *ExprSuite) TestRegression12037() {
+	s.Given().
+		Workflow(`apiVersion: argoproj.io/v1alpha1
+kind: Workflow
+metadata:
+  generateName: broken-
+spec:
+  entrypoint: main
+  templates:
+    - name: main
+      dag:
+        tasks:
+          - name: split
+            template: foo
+          - name: map
+            template: foo
+            depends: split
+
+    - name: foo
+      container:
+        image: alpine
+        command:
+          - sh
+          - -c
+          - |
+            echo "foo"
+`).When().
+		SubmitWorkflow().
+		WaitForWorkflow(fixtures.ToBeSucceeded).
+		Then().
+		ExpectWorkflow(func(t *testing.T, metadata *v1.ObjectMeta, status *v1alpha1.WorkflowStatus) {
+			assert.Equal(t, status.Phase, v1alpha1.WorkflowSuceeded)
+		}).
+		ExpectWorkflowNode(func(status v1alpha1.nodeStatus) bool {
+			return strings.Contains(status.name, ".split")
+		}, func(t *testing.T, status *v1alpha1.NodeStatus, pod *apiv1.Pod) {
+			assert.Equal(t, v1alpha1.NodeSucceeded, status.Phase)
+		}).
+		ExpectWorkflowNode(func(status v1alpha1.nodeStatus) bool {
+			return strings.Contains(status.name, ".map")
+		}, func(t *testing.T, status *v1alpha1.NodeStatus, pod *apiv1.Pod) {
+			assert.Equal(t, v1alpha1.NodeSucceeded, status.Phase)
+		})
+}
+
+func TestExprLangSSuite(t *testing.T) {
+	suite.Run(t, new(ExprSuite))
+}