add unit tests for yurthub data filtering framework

pkg/yurthub/filter/approver_test.go

@@ -0,0 +1,65 @@
+/*
+Copyright 2020 The OpenYurt 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 filter
+
+import (
+	"testing"
+)
+
+func TestApprove(t *testing.T) {
+	testcases := map[string]struct {
+		comp           string
+		resource       string
+		verbs          []string
+		comp2          string
+		resource2      string
+		verb2          string
+		expectedResult bool
+	}{
+		"normal case": {
+			"kubelet", "services", []string{"list", "watch"},
+			"kubelet", "services", "list",
+			true,
+		},
+		"components are not equal": {
+			"kubelet", "services", []string{"list", "watch"},
+			"kube-proxy", "services", "list",
+			false,
+		},
+		"resources are not equal": {
+			"kubelet", "services", []string{"list", "watch"},
+			"kubelet", "pods", "list",
+			false,
+		},
+		"verb is not in verbs set": {
+			"kubelet", "services", []string{"list", "watch"},
+			"kubelet", "services", "get",
+			false,
+		},
+	}
+
+	for k, tt := range testcases {
+		t.Run(k, func(t *testing.T) {
+			approver := NewApprover(tt.comp, tt.resource, tt.verbs...)
+			result := approver.Approve(tt.comp2, tt.resource2, tt.verb2)
+
+			if result != tt.expectedResult {
+				t.Errorf("Approve error: expected %v, but got %v\n", tt.expectedResult, result)
+			}
+		})
+	}
+}