v / vlib / encoding / binary / little_endian_test.v
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1module binary


2


3// Little Endian Tests


4


5fn test_little_endian_u16() {


6    assert little_endian_u16([u8(0), 0]) == u16(0)


7    assert little_endian_u16([u8(5), 4]) == u16(0x0405)


8    assert little_endian_u16([u8(0x35), 0x57]) == u16(0x5735)


9    assert little_endian_u16([u8(0x35), 0x57]) != u16(0x3557)


10}


11


12fn test_little_endian_u16_at() {


13    assert little_endian_u16_at([u8(1), 0, 0, 1], 1) == u16(0)


14    assert little_endian_u16_at([u8(5), 4, 9, 1], 1) == u16(0x0904)


15    assert little_endian_u16_at([u8(0xf8), 0xa2, 0x9e, 0x21], 1) == u16(0x9ea2)


16    assert little_endian_u16_at([u8(0xf8), 0xa2, 0x9e, 0x21], 1) != u16(0xa29e)


17}


18


19fn test_little_endian_u16_end() {


20    assert little_endian_u16_end([u8(1), 0, 0, 1]) == u16(0x0100)


21    assert little_endian_u16_end([u8(5), 4, 9, 1]) == u16(0x0109)


22    assert little_endian_u16_end([u8(0xf8), 0xa2, 0x9e, 0x21]) == u16(0x219e)


23    assert little_endian_u16_end([u8(0xf8), 0xa2, 0x9e, 0x21]) != u16(0x9e21)


24}


25


26fn test_little_endian_put_u16() {


27    mut buf := []u8{len: 2}


28    little_endian_put_u16(mut buf, 0x8725)


29    assert buf == [u8(0x25), 0x87]


30    little_endian_put_u16(mut buf, 0)


31    assert buf == [u8(0), 0]


32    little_endian_put_u16(mut buf, 0xfdff)


33    assert buf == [u8(0xff), 0xfd]


34}


35


36fn test_little_endian_put_u16_at() {


37    mut buf := []u8{len: 4}


38    little_endian_put_u16_at(mut buf, 0x8725, 1)


39    assert buf == [u8(0), 0x25, 0x87, 0]


40


41    buf = []u8{len: 4}


42    little_endian_put_u16_at(mut buf, 1, 1)


43    assert buf == [u8(0), 1, 0, 0]


44


45    buf = []u8{len: 4}


46    little_endian_put_u16_at(mut buf, 0xfdff, 1)


47    assert buf == [u8(0), 0xff, 0xfd, 0]


48}


49


50fn test_little_endian_put_u16_end() {


51    mut buf := []u8{len: 4}


52    little_endian_put_u16_end(mut buf, 0x8725)


53    assert buf == [u8(0), 0, 0x25, 0x87]


54


55    buf = []u8{len: 4}


56    little_endian_put_u16_end(mut buf, 1)


57    assert buf == [u8(0), 0, 1, 0]


58


59    buf = []u8{len: 4}


60    little_endian_put_u16_end(mut buf, 0xfdff)


61    assert buf == [u8(0), 0, 0xff, 0xfd]


62}


63


64fn test_little_endian_get_u16() {


65    assert little_endian_get_u16(u16(256)) == [u8(0), 1]


66    assert little_endian_get_u16(u16(0x0405)) == [u8(5), 4]


67    assert little_endian_get_u16(u16(0x5735)) == [u8(0x35), 0x57]


68    assert little_endian_get_u16(u16(0x3557)) != [u8(0x35), 0x57]


69}


70


71fn test_little_endian_u32() {


72    assert little_endian_u32([u8(0), 0, 0, 0]) == u32(0)


73    assert little_endian_u32([u8(5), 4, 9, 1]) == u32(0x01090405)


74    assert little_endian_u32([u8(0xf8), 0xa2, 0x9e, 0x21]) == u32(0x219ea2f8)


75    assert little_endian_u32([u8(0xf8), 0xa2, 0x9e, 0x21]) != u32(0xf8a29e21)


76}


77


78fn test_little_endian_u32_at() {


79    assert little_endian_u32_at([u8(1), 0, 0, 0, 0, 0, 0, 0], 1) == u32(0)


80    assert little_endian_u32_at([u8(5), 4, 9, 1, 7, 3, 6, 8], 1) == u32(0x07010904)


81    assert little_endian_u32_at([u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f], 1) == u32(0x7f219ea2)


82    assert little_endian_u32_at([u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f], 1) != u32(0xa29e217f)


83}


84


85fn test_little_endian_u32_end() {


86    assert little_endian_u32_end([u8(1), 0, 0, 0, 0, 0, 0, 0]) == u32(0)


87    assert little_endian_u32_end([u8(5), 4, 9, 1, 7, 3, 6, 8]) == u32(0x08060307)


88    assert little_endian_u32_end([u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f]) == u32(0x8f8e9f7f)


89    assert little_endian_u32_end([u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f]) != u32(0x7f9f8e8f)


90}


91


92fn test_little_endian_put_u32() {


93    mut buf := []u8{len: 4}


94    little_endian_put_u32(mut buf, 0x872fea95)


95    assert buf == [u8(0x95), 0xea, 0x2f, 0x87]


96    little_endian_put_u32(mut buf, 0)


97    assert buf == [u8(0), 0, 0, 0]


98    little_endian_put_u32(mut buf, 0xfdf2e68f)


99    assert buf == [u8(0x8f), 0xe6, 0xf2, 0xfd]


100}


101


102fn test_little_endian_put_u32_at() {


103    mut buf := []u8{len: 8}


104    little_endian_put_u32_at(mut buf, 0x872fea95, 1)


105    assert buf == [u8(0), 0x95, 0xea, 0x2f, 0x87, 0, 0, 0]


106


107    buf = []u8{len: 8}


108    little_endian_put_u32_at(mut buf, 1, 1)


109    assert buf == [u8(0), 1, 0, 0, 0, 0, 0, 0]


110


111    buf = []u8{len: 8}


112    little_endian_put_u32_at(mut buf, 0xfdf2e68f, 1)


113    assert buf == [u8(0), 0x8f, 0xe6, 0xf2, 0xfd, 0, 0, 0]


114}


115


116fn test_little_endian_put_u32_end() {


117    mut buf := []u8{len: 8}


118    little_endian_put_u32_end(mut buf, 0x872fea95)


119    assert buf == [u8(0), 0, 0, 0, 0x95, 0xea, 0x2f, 0x87]


120


121    buf = []u8{len: 8}


122    little_endian_put_u32_end(mut buf, 1)


123    assert buf == [u8(0), 0, 0, 0, 1, 0, 0, 0]


124


125    buf = []u8{len: 8}


126    little_endian_put_u32_end(mut buf, 0xfdf2e68f)


127    assert buf == [u8(0), 0, 0, 0, 0x8f, 0xe6, 0xf2, 0xfd]


128}


129


130fn test_little_endian_get_u32() {


131    assert little_endian_get_u32(u32(16777216)) == [u8(0), 0, 0, 1]


132    assert little_endian_get_u32(u32(0x01090405)) == [u8(5), 4, 9, 1]


133    assert little_endian_get_u32(u32(0x2192a2f8)) == [u8(0xf8), 0xa2, 0x92, 0x21]


134    assert little_endian_get_u32(u32(0xf8a29e21)) != [u8(0xf8), 0xa2, 0x9e, 0x21]


135}


136


137fn test_little_endian_u64() {


138    assert little_endian_u64([u8(0), 0, 0, 0, 0, 0, 0, 0]) == u64(0)


139    assert little_endian_u64([u8(5), 4, 9, 1, 7, 3, 6, 8]) == u64(0x0806030701090405)


140    assert little_endian_u64([u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f]) == u64(0x8f8e9f7f219ea2f8)


141    assert little_endian_u64([u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f]) != u64(0xf8a29e217f9f8e8f)


142}


143


144fn test_little_endian_u64_at() {


145    assert little_endian_u64_at([u8(1), 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1], 1) == u64(0)


146    assert little_endian_u64_at([u8(0), 5, 4, 9, 1, 7, 3, 6, 8, 0, 0, 0, 0, 0, 0, 0], 1) == u64(0x0806030701090405)


147    assert little_endian_u64_at([u8(0), 0xf8, 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f, 0, 0, 0,


148        0, 0, 0, 0], 1) == u64(0x8f8e9f7f219ea2f8)


149    assert little_endian_u64_at([u8(0), 0xf8, 0xa2, 0x9e, 0x21, 0x7f, 0x9f, 0x8e, 0x8f, 0, 0, 0,


150        0, 0, 0, 0], 1) != u64(0xf8a29e217f9f8e8f)


151}


152


153fn test_little_endian_f32_at() {


154    assert little_endian_f32_at([u8(1), 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1], 1) == f32(0)


155    /*


156    assert little_endian_f32_at([u8(0), 5, 4, 9, 1, 7, 3, 6, 8, 0, 0, 0, 0, 0, 0, 0],


157        1).eq_epsilon(0.00000000000000000000000000000000002516)


158        */


159}


160


161fn test_little_endian_u64_end() {


162    assert little_endian_u64_end([u8(1), 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]) == u64(0)


163    assert little_endian_u64_end([u8(0), 0, 0, 0, 0, 0, 0, 0, 5, 4, 9, 1, 7, 3, 6, 8]) == u64(0x0806030701090405)


164    assert little_endian_u64_end([u8(0), 0, 0, 0, 0, 0, 0, 0, 0xf8, 0xa2, 0x9e, 0x21, 0x7f, 0x9f,


165        0x8e, 0x8f]) == u64(0x8f8e9f7f219ea2f8)


166    assert little_endian_u64_end([u8(0), 0, 0, 0, 0, 0, 0, 0, 0xf8, 0xa2, 0x9e, 0x21, 0x7f, 0x9f,


167        0x8e, 0x8f]) != u64(0xf8a29e217f9f8e8f)


168}


169


170fn test_little_endian_put_u64() {


171    mut buf := []u8{len: 8}


172    little_endian_put_u64(mut buf, 0x872fea95fdf2e68f)


173    assert buf == [u8(0x8f), 0xe6, 0xf2, 0xfd, 0x95, 0xea, 0x2f, 0x87]


174    little_endian_put_u64(mut buf, 0)


175    assert buf == [u8(0), 0, 0, 0, 0, 0, 0, 0]


176    little_endian_put_u64(mut buf, 0xfdf2e68f8e9f7f21)


177    assert buf == [u8(0x21), 0x7f, 0x9f, 0x8e, 0x8f, 0xe6, 0xf2, 0xfd]


178}


179


180fn test_little_endian_put_u64_at() {


181    mut buf := []u8{len: 16}


182    little_endian_put_u64_at(mut buf, 0x872fea95fdf2e68f, 1)


183    assert buf == [u8(0), 0x8f, 0xe6, 0xf2, 0xfd, 0x95, 0xea, 0x2f, 0x87, 0, 0, 0, 0, 0, 0, 0]


184


185    buf = []u8{len: 16}


186    little_endian_put_u64_at(mut buf, 1, 1)


187    assert buf == [u8(0), 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]


188


189    buf = []u8{len: 16}


190    little_endian_put_u64_at(mut buf, 0xfdf2e68f8e9f7f21, 1)


191    assert buf == [u8(0), 0x21, 0x7f, 0x9f, 0x8e, 0x8f, 0xe6, 0xf2, 0xfd, 0, 0, 0, 0, 0, 0, 0]


192}


193


194fn test_little_endian_put_u64_end() {


195    mut buf := []u8{len: 16}


196    little_endian_put_u64_end(mut buf, 0x872fea95fdf2e68f)


197    assert buf == [u8(0), 0, 0, 0, 0, 0, 0, 0, 0x8f, 0xe6, 0xf2, 0xfd, 0x95, 0xea, 0x2f, 0x87]


198


199    buf = []u8{len: 16}


200    little_endian_put_u64_end(mut buf, 1)


201    assert buf == [u8(0), 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0]


202


203    buf = []u8{len: 16}


204    little_endian_put_u64_end(mut buf, 0xfdf2e68f8e9f7f21)


205    assert buf == [u8(0), 0, 0, 0, 0, 0, 0, 0, 0x21, 0x7f, 0x9f, 0x8e, 0x8f, 0xe6, 0xf2, 0xfd]


206}


207


208fn test_little_endian_get_u64() {


209    assert little_endian_get_u64(u64(72057594037927936)) == [u8(0), 0, 0, 0, 0, 0, 0, 1]


210    assert little_endian_get_u64(u64(0x0806030701090405)) == [u8(5), 4, 9, 1, 7, 3, 6, 8]


211    assert little_endian_get_u64(u64(0x8f8e9f7f219ea2f8)) == [u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f,


212        0x9f, 0x8e, 0x8f]


213    assert little_endian_get_u64(u64(0xf8a29e217f9f8e8f)) != [u8(0xf8), 0xa2, 0x9e, 0x21, 0x7f,


214        0x9f, 0x8e, 0x8f]


215}


216