diff --git a/pkg/config/equals_test.go b/pkg/config/equals_test.go
new file mode 100644
index 00000000..7a403185
--- /dev/null
+++ b/pkg/config/equals_test.go
@@ -0,0 +1,82 @@
+/*
+ * 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 config
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestUserEquals(t *testing.T) {
+	u1 := &User{Username: "user1", Password: "password1"}
+	u2 := &User{Username: "user2", Password: "password2"}
+	u3 := &User{Username: "user1", Password: "password1"}
+	assert.False(t, u1.Equals(u2))
+	assert.True(t, u1.Equals(u3))
+}
+
+func TestNodeEquals(t *testing.T) {
+	n1 := &Node{Name: "node1", Host: "host1", Port: 1234, Database: "db1", Username: "user1", Password: "pass1", Weight: "1", Labels: map[string]string{"label1": "label2"}, Parameters: map[string]string{"param1": "value1"}}
+	n2 := &Node{Name: "node2", Host: "host2", Port: 5678, Database: "db2", Username: "user2", Password: "pass2", Weight: "2", Labels: map[string]string{"label3": "label4"}, Parameters: map[string]string{"param2": "value2"}}
+	n3 := &Node{Name: "node1", Host: "host1", Port: 1234, Database: "db1", Username: "user1", Password: "pass1", Weight: "1", Labels: map[string]string{"label1": "label2"}, Parameters: map[string]string{"param1": "value1"}}
+	assert.False(t, n1.Equals(n2))
+	assert.True(t, n1.Equals(n3))
+}
+
+func TestRulesEquals(t *testing.T) {
+	rules1 := Rules{
+		&Rule{Columns: []*ColumnRule{{Name: "col1"}}},
+		&Rule{Columns: []*ColumnRule{{Name: "col2"}}},
+	}
+	rules2 := Rules{
+		&Rule{Columns: []*ColumnRule{{Name: "col3"}}},
+		&Rule{Columns: []*ColumnRule{{Name: "col4"}}},
+	}
+	rules3 := Rules{
+		&Rule{Columns: []*ColumnRule{{Name: "col1"}}},
+		&Rule{Columns: []*ColumnRule{{Name: "col2"}}},
+	}
+	assert.False(t, rules1.Equals(rules2))
+	assert.True(t, rules1.Equals(rules3))
+}
+
+func TestTableEquals(t *testing.T) {
+	t1 := &Table{
+		DbRules:        Rules{&Rule{Columns: []*ColumnRule{{Name: "col1"}}}},
+		TblRules:       Rules{&Rule{Columns: []*ColumnRule{{Name: "col2"}}}},
+		Topology:       &Topology{"node1", "node2"},
+		ShadowTopology: &Topology{"shadow1", "shadow2"},
+		Attributes:     map[string]string{"attr1": "value1"},
+	}
+	t2 := &Table{
+		DbRules:        Rules{&Rule{Columns: []*ColumnRule{{Name: "col3"}}}},
+		TblRules:       Rules{&Rule{Columns: []*ColumnRule{{Name: "col4"}}}},
+		Topology:       &Topology{"node3", "node4"},
+		ShadowTopology: &Topology{"shadow3", "shadow4"},
+		Attributes:     map[string]string{"attr2": "value2"},
+	}
+	t3 := &Table{
+		DbRules:        Rules{&Rule{Columns: []*ColumnRule{{Name: "col1"}}}},
+		TblRules:       Rules{&Rule{Columns: []*ColumnRule{{Name: "col2"}}}},
+		Topology:       &Topology{"node1", "node2"},
+		ShadowTopology: &Topology{"shadow1", "shadow2"},
+		Attributes:     map[string]string{"attr1": "value1"},
+	}
+	assert.False(t, t1.Equals(t2))
+	assert.True(t, t1.Equals(t3))
+}