+START_TEST (test_get_byte)
+{
+ uint8_t data[4] = {0x12, 0x34, 0x56, 0x78};
+ uint8_t result = getByte(0, data, sizeof(data), ENDIANNESS_BIG_ENDIAN);
+ ck_assert_int_eq(result, 0x12);
+ result = getByte(3, data, sizeof(data), ENDIANNESS_BIG_ENDIAN);
+ ck_assert_int_eq(result, 0x78);
+}
+END_TEST
+
+START_TEST (test_get_nibble)
+{
+ uint8_t data[4] = {0x12, 0x34, 0x56, 0x78};
+ uint8_t result = getNibble(0, data, sizeof(data), ENDIANNESS_BIG_ENDIAN);
+ ck_assert_int_eq(result, 0x1);
+ result = getNibble(1, data, sizeof(data), ENDIANNESS_BIG_ENDIAN);
+ ck_assert_int_eq(result, 0x2);
+ result = getNibble(2, data, sizeof(data), ENDIANNESS_BIG_ENDIAN);
+ ck_assert_int_eq(result, 0x3);
+}
+END_TEST
+
+START_TEST (test_get_bits)
+{
+ uint8_t data[4] = {0x12, 0x34, 0x56, 0x78};
+ uint8_t result[4];
+ getBits(0, 16, data, 36, ENDIANNESS_BIG_ENDIAN, result);
+ ck_assert_int_eq(result[0], 0x12);
+ ck_assert_int_eq(result[1], 0x34);
+}
+END_TEST
+
+START_TEST (test_get_uneven_bits)
+{
+ uint8_t data[4] = {0x12, 0x34, 0x56, 0x78};
+ uint8_t result[4] = {0};
+ getBits(4, 12, data, 36, ENDIANNESS_BIG_ENDIAN, result);
+ ck_assert_int_eq(result[0], 0x2);
+ ck_assert_int_eq(result[1], 0x34);
+}
+END_TEST
+