| 9 | ) |
| 10 | |
| 11 | func TestFunctionCall_EncodeDecode(t *testing.T) { |
| 12 | type fields struct { |
| 13 | Function uint32 |
| 14 | ArgFormatCodes []uint16 |
| 15 | Arguments [][]byte |
| 16 | ResultFormatCode uint16 |
| 17 | } |
| 18 | tests := []struct { |
| 19 | name string |
| 20 | fields fields |
| 21 | wantErr bool |
| 22 | }{ |
| 23 | {"valid", fields{uint32(123), []uint16{0, 1, 0, 1}, [][]byte{[]byte("foo"), []byte("bar"), []byte("baz")}, uint16(1)}, false}, |
| 24 | {"invalid format code", fields{uint32(123), []uint16{2, 1, 0, 1}, [][]byte{[]byte("foo"), []byte("bar"), []byte("baz")}, uint16(0)}, true}, |
| 25 | {"invalid result format code", fields{uint32(123), []uint16{1, 1, 0, 1}, [][]byte{[]byte("foo"), []byte("bar"), []byte("baz")}, uint16(2)}, true}, |
| 26 | } |
| 27 | for _, tt := range tests { |
| 28 | t.Run(tt.name, func(t *testing.T) { |
| 29 | src := &FunctionCall{ |
| 30 | Function: tt.fields.Function, |
| 31 | ArgFormatCodes: tt.fields.ArgFormatCodes, |
| 32 | Arguments: tt.fields.Arguments, |
| 33 | ResultFormatCode: tt.fields.ResultFormatCode, |
| 34 | } |
| 35 | encoded, err := src.Encode([]byte{}) |
| 36 | require.NoError(t, err) |
| 37 | dst := &FunctionCall{} |
| 38 | // Check the header |
| 39 | msgTypeCode := encoded[0] |
| 40 | if msgTypeCode != 'F' { |
| 41 | t.Errorf("msgTypeCode %v should be 'F'", msgTypeCode) |
| 42 | return |
| 43 | } |
| 44 | // Check length, does not include type code character |
| 45 | l := binary.BigEndian.Uint32(encoded[1:5]) |
| 46 | if int(l) != (len(encoded) - 1) { |
| 47 | t.Errorf("Incorrect message length, got = %v, wanted = %v", l, len(encoded)) |
| 48 | } |
| 49 | // Check decoding works as expected |
| 50 | err = dst.Decode(encoded[5:]) |
| 51 | if err != nil { |
| 52 | if !tt.wantErr { |
| 53 | t.Errorf("FunctionCall.Decode() error = %v, wantErr %v", err, tt.wantErr) |
| 54 | } |
| 55 | return |
| 56 | } |
| 57 | |
| 58 | if !reflect.DeepEqual(src, dst) { |
| 59 | t.Error("difference after encode / decode cycle") |
| 60 | t.Errorf("src = %v", src) |
| 61 | t.Errorf("dst = %v", dst) |
| 62 | } |
| 63 | }) |
| 64 | } |
| 65 | } |