add collection ut (#570)

add 1.2.0 change log (#567)

* add 1.2.0 change log

Co-authored-by: Yuecai Liu <38887641+luky116@users.noreply.github.com>

pkg/util/collection/collection_test.go

@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 collection
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestEncodeDecodeMap(t *testing.T) {
+	testCases := []struct {
+		name     string
+		dataMap  map[string]string
+		expected map[string]string
+	}{
+		{
+			name: "test case 1",
+			dataMap: map[string]string{
+				"key1": "value1",
+				"key2": "value2",
+			},
+			expected: map[string]string{
+				"key1": "value1",
+				"key2": "value2",
+			},
+		},
+		{
+			name:     "test case 2",
+			dataMap:  nil,
+			expected: nil,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			encoded := EncodeMap(tc.dataMap)
+			decoded := DecodeMap(encoded)
+
+			if !reflect.DeepEqual(decoded, tc.expected) {
+				t.Errorf("DecodeMap(%v) = %v, expected %v", encoded, decoded, tc.expected)
+			}
+		})
+	}
+}