diff --git a/core/cautils/jsonutils_test.go b/core/cautils/jsonutils_test.go
new file mode 100644
index 00000000..d926f8ab
--- /dev/null
+++ b/core/cautils/jsonutils_test.go
@@ -0,0 +1,89 @@
+package cautils
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestPrettyJson(t *testing.T) {
+	type args struct {
+		data interface{}
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    []byte
+		wantErr bool
+	}{
+		{
+			name: "SimpleJson",
+			args: args{
+				data: map[string]interface{}{
+					"key": "value",
+				},
+			},
+			want: []byte(`{
+  "key": "value"
+}
+`),
+			wantErr: false,
+		},
+		{
+			name: "NestedJson",
+			args: args{
+				data: map[string]interface{}{
+					"key": map[string]interface{}{
+						"key": "value",
+					},
+				},
+			},
+			want: []byte(`{
+  "key": {
+    "key": "value"
+  }
+}
+`),
+			wantErr: false,
+		},
+		{
+			name: "ComplexJson",
+			args: args{
+				data: map[string]interface{}{
+					"A": "B",
+					"C": map[string]interface{}{
+						"D": "E",
+						"F": map[string]interface{}{
+							"G": "H",
+							"I": "J",
+						},
+					},
+				},
+			},
+			want: []byte(`{
+  "A": "B",
+  "C": {
+    "D": "E",
+    "F": {
+      "G": "H",
+      "I": "J"
+    }
+  }
+}
+`),
+			wantErr: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := PrettyJson(tt.args.data)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("PrettyJson() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("PrettyJson() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}