v2 / vlib / builtin / rune_test.v
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1fn test_repeat() {


2    r1 := `V`


3    r2 := `👋`


4


5    assert r1.repeat(5) == 'VVVVV'


6    assert r2.repeat(5) == '👋👋👋👋👋'


7


8    assert r1.repeat(1) == r1.str()


9    assert r2.repeat(1) == r2.str()


10


11    assert r1.repeat(0) == ''


12    assert r2.repeat(0) == ''


13}


14


15fn test_length_in_bytes() {


16    assert rune(0x0).length_in_bytes() == 1


17    assert `A`.length_in_bytes() == 1 // latin letter


18    assert rune(0x7F).length_in_bytes() == 1


19


20    assert rune(0x80).length_in_bytes() == 2


21    assert `Д`.length_in_bytes() == 2 // cyrillic letter


22    assert rune(0x7FF).length_in_bytes() == 2


23


24    assert rune(0x800).length_in_bytes() == 3


25    assert `喂`.length_in_bytes() == 3 // hey


26    assert rune(0xFFFF).length_in_bytes() == 3


27


28    assert rune(0xD800).length_in_bytes() == -1 // min for surrogates


29    assert rune(0xD866).length_in_bytes() == -1 // invalid


30    assert rune(0xDFFF).length_in_bytes() == -1 // max for surrogates


31


32    assert rune(0x100000).length_in_bytes() == 4


33    assert rune(0x10FFD7).length_in_bytes() == 4 // "Supplementary Private Use Area-B" ¯\_(ツ)_/¯


34    assert rune(0x10FFFF).length_in_bytes() == 4


35


36    assert rune(0x110000).length_in_bytes() == -1


37}


38


39fn test_bytes() {


40    r1 := `★`


41    assert r1.bytes() == [u8(0xe2), 0x98, 0x85]


42}


43


44fn test_to_upper() {


45    assert `c`.to_upper() == `C`


46    assert `C`.to_upper() == `C`


47    assert `δ`.to_upper() == `Δ`


48    assert `Δ`.to_upper() == `Δ`


49    assert `ā`.to_upper() == `Ā`


50    assert `Ā`.to_upper() == `Ā`


51    assert `Я`.to_upper() == `Я`


52    assert `я`.to_upper() == `Я`


53    assert `Dž`.to_upper() == `DŽ`


54    assert `dž`.to_upper() == `DŽ`


55    assert `DŽ`.to_upper() == `DŽ`


56}


57


58fn test_to_lower() {


59    assert `C`.to_lower() == `c`


60    assert `c`.to_lower() == `c`


61    assert `Δ`.to_lower() == `δ`


62    assert `δ`.to_lower() == `δ`


63    assert `Ā`.to_lower() == `ā`


64    assert `ā`.to_lower() == `ā`


65    assert `я`.to_lower() == `я`


66    assert `Я`.to_lower() == `я`


67    assert `Dž`.to_lower() == `dž`


68    assert `DŽ`.to_lower() == `dž`


69    assert `dž`.to_lower() == `dž`


70}


71


72fn test_to_title() {


73    assert `c`.to_title() == `C`


74    assert `C`.to_title() == `C`


75    assert `δ`.to_title() == `Δ`


76    assert `Δ`.to_title() == `Δ`


77    assert `ā`.to_title() == `Ā`


78    assert `Ā`.to_title() == `Ā`


79    assert `я`.to_title() == `Я`


80    assert `Я`.to_title() == `Я`


81    assert `DŽ`.to_title() == `Dž`


82    assert `dž`.to_title() == `Dž`


83    assert `Dž`.to_title() == `Dž`


84}


85