Function TestRealDecoder_getArrayLength

real_decoder_test.go:12–77

(t *testing.T)

)

func TestRealDecoder_getArrayLength(t *testing.T) {
	tests := []struct {
		name    string
		input   []byte
		wantLen int
		wantErr error
	}{
		{
			name:    "null array (-1)",
			input:   []byte{0xFF, 0xFF, 0xFF, 0xFF},
			wantLen: -1,
			wantErr: nil,
		},
		{
			name:    "valid array length 64",
			input:   makeInput(64),
			wantLen: 64,
			wantErr: nil,
		},
		{
			name:    "valid array up to MaxResponseSize",
			input:   makeInput(int(MaxResponseSize)),
			wantLen: int(MaxResponseSize),
			wantErr: nil,
		},
		{
			name:    "insufficient data",
			input:   []byte{0x00, 0x00, 0x00}, // fewer than 4 bytes
			wantLen: -1,
			wantErr: ErrInsufficientData,
		},
		{
			name:    "length exceeds remaining",
			input:   []byte{0x00, 0x00, 0x00, 0x05, 0x00}, // length of 5, but only 1 byte remains
			wantLen: -1,
			wantErr: ErrInsufficientData,
		},
		{
			name:    "length exceeds MaxResponseSize",
			input:   makeInput(int(MaxResponseSize + 1)),
			wantLen: -1,
			wantErr: errInvalidArrayLength,
		},
		{
			name:    "negative length other than null array",
			input:   []byte{0x80, 0x00, 0x00, 0x00},
			wantLen: -1,
			wantErr: errInvalidArrayLength,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			rd := &realDecoder{
				raw: tt.input,
			}
			gotLen, gotErr := rd.getArrayLength()
			if gotLen != tt.wantLen {