add ut

Signed-off-by: sivchari <[email protected]>

Author: sivchari

go.mod

@@ -1,6 +1,6 @@
 module github.com/argoproj/gitops-engine
 
-go 1.24.1
+go 1.24.2
 
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc

pkg/utils/json/json_test.go

@@ -0,0 +1,105 @@
+package json
+
+import (
+	"reflect"
+	"testing"
+)
+
+func Test_removeFields(t *testing.T) {
+	tests := []struct {
+		name   string
+		config any
+		live   any
+		want   any
+	}{
+		{
+			name: "map",
+			config: map[string]any{
+				"foo": "bar",
+			},
+			live: map[string]any{
+				"foo": "baz",
+				"bar": "baz",
+			},
+			want: map[string]any{
+				"foo": "baz",
+			},
+		},
+		{
+			name: "nested map",
+			config: map[string]any{
+				"foo": map[string]any{
+					"bar": "baz",
+				},
+				"bar": "baz",
+			},
+			live: map[string]any{
+				"foo": map[string]any{
+					"bar": "qux",
+					"baz": "qux",
+				},
+				"bar": "baz",
+			},
+			want: map[string]any{
+				"foo": map[string]any{
+					"bar": "qux",
+				},
+				"bar": "baz",
+			},
+		},
+		{
+			name: "list",
+			config: []any{
+				map[string]any{
+					"foo": "bar",
+				},
+			},
+			live: []any{
+				map[string]any{
+					"foo": "baz",
+					"bar": "baz",
+				},
+			},
+			want: []any{
+				map[string]any{
+					"foo": "baz",
+				},
+			},
+		},
+		{
+			name: "nested list",
+			config: []any{
+				map[string]any{
+					"foo": map[string]any{
+						"bar": "baz",
+					},
+					"bar": "baz",
+				},
+			},
+			live: []any{
+				map[string]any{
+					"foo": map[string]any{
+						"bar": "qux",
+						"baz": "qux",
+					},
+					"bar": "baz",
+				},
+			},
+			want: []any{
+				map[string]any{
+					"foo": map[string]any{
+						"bar": "qux",
+					},
+					"bar": "baz",
+				},
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := removeFields(tt.config, tt.live); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("removeFields() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}