From d1dfa899532ae503a81f2ffdd80aa3f734af97e9 Mon Sep 17 00:00:00 2001
From: Aldo Culquicondor <acondor@google.com>
Date: Mon, 13 Mar 2023 16:50:57 -0400
Subject: [PATCH] Add integration test for DefaultBinder

Change-Id: I71ea08104024403a7d9ebcf3725fc3ff17997229
---
 test/integration/scheduler/bind/bind_test.go | 72 ++++++++++++++++++++
 test/integration/scheduler/bind/main_test.go | 27 ++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 test/integration/scheduler/bind/bind_test.go
 create mode 100644 test/integration/scheduler/bind/main_test.go

diff --git a/test/integration/scheduler/bind/bind_test.go b/test/integration/scheduler/bind/bind_test.go
new file mode 100644
index 00000000000..a633660aaea
--- /dev/null
+++ b/test/integration/scheduler/bind/bind_test.go
@@ -0,0 +1,72 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package bind
+
+import (
+	"testing"
+
+	corev1 "k8s.io/api/core/v1"
+	"k8s.io/kubernetes/pkg/scheduler/framework"
+	st "k8s.io/kubernetes/pkg/scheduler/testing"
+	testutil "k8s.io/kubernetes/test/integration/util"
+)
+
+// TestDefaultBinder tests the binding process in the scheduler.
+func TestDefaultBinder(t *testing.T) {
+	testCtx := testutil.InitTestSchedulerWithOptions(t, testutil.InitTestAPIServer(t, "", nil), 0)
+	testutil.SyncInformerFactory(testCtx)
+	// Do not start scheduler routine.
+	defer testutil.CleanupTest(t, testCtx)
+
+	// Add a node.
+	node, err := testutil.CreateNode(testCtx.ClientSet, st.MakeNode().Name("testnode").Obj())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	tests := map[string]struct {
+		anotherUID     bool
+		wantStatusCode framework.Code
+	}{
+		"same UID": {
+			wantStatusCode: framework.Success,
+		},
+		"different UID": {
+			anotherUID:     true,
+			wantStatusCode: framework.Error,
+		},
+	}
+	for name, tc := range tests {
+		t.Run(name, func(t *testing.T) {
+			pod, err := testutil.CreatePausePodWithResource(testCtx.ClientSet, "fixed-name", testCtx.NS.Name, nil)
+			if err != nil {
+				t.Fatalf("Failed to create pod: %v", err)
+			}
+			defer testutil.CleanupPods(testCtx.ClientSet, t, []*corev1.Pod{pod})
+
+			podCopy := pod.DeepCopy()
+			if tc.anotherUID {
+				podCopy.UID = "another"
+			}
+
+			status := testCtx.Scheduler.Profiles["default-scheduler"].RunBindPlugins(testCtx.Ctx, nil, podCopy, node.Name)
+			if code := status.Code(); code != tc.wantStatusCode {
+				t.Errorf("Bind returned code %s, want %s", code, tc.wantStatusCode)
+			}
+		})
+	}
+}
diff --git a/test/integration/scheduler/bind/main_test.go b/test/integration/scheduler/bind/main_test.go
new file mode 100644
index 00000000000..2ee98e1a006
--- /dev/null
+++ b/test/integration/scheduler/bind/main_test.go
@@ -0,0 +1,27 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package bind
+
+import (
+	"testing"
+
+	"k8s.io/kubernetes/test/integration/framework"
+)
+
+func TestMain(m *testing.M) {
+	framework.EtcdMain(m.Run)
+}