feat: field mask util.

fieldmaskutil/fieldmaskutil_test.go

@@ -0,0 +1,59 @@
+package fieldmaskutil
+
+import (
+	"reflect"
+	"testing"
+)
+
+func Test_NestedMaskFromPaths(t *testing.T) {
+	type args struct {
+		paths []string
+	}
+	tests := []struct {
+		name string
+		args args
+		want NestedMask
+	}{
+		{
+			name: "no nested fields",
+			args: args{paths: []string{"a", "b", "c"}},
+			want: NestedMask{"a": NestedMask{}, "b": NestedMask{}, "c": NestedMask{}},
+		},
+		{
+			name: "with nested fields",
+			args: args{paths: []string{"aaa.bb.c", "dd.e", "f"}},
+			want: NestedMask{
+				"aaa": NestedMask{"bb": NestedMask{"c": NestedMask{}}},
+				"dd":  NestedMask{"e": NestedMask{}},
+				"f":   NestedMask{}},
+		},
+		{
+			name: "single field",
+			args: args{paths: []string{"a"}},
+			want: NestedMask{"a": NestedMask{}},
+		},
+		{
+			name: "empty fields",
+			args: args{paths: []string{}},
+			want: NestedMask{},
+		},
+		{
+			name: "invalid input",
+			args: args{paths: []string{".", "..", "..."}},
+			want: NestedMask{},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := NestedMaskFromPaths(tt.args.paths); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("NestedMaskFromPaths() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func BenchmarkNestedMaskFromPaths(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		NestedMaskFromPaths([]string{"aaa.bbb.c.d.e.f", "aa.b.cc.ddddddd", "e", "f", "g.h.i.j.k"})
+	}
+}