v / vlib / builtin
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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 `å–‚`.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}