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64eccdd9be
Mainly to get rid of one top level directory. But this will also be useful when there are tests of the embedding API.
43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
// Returns characters (as strings).
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IO.print("abcd"[0]) // expect: a
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IO.print("abcd"[1]) // expect: b
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IO.print("abcd"[2]) // expect: c
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IO.print("abcd"[3]) // expect: d
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// Allows indexing backwards from the end.
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IO.print("abcd"[-4]) // expect: a
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IO.print("abcd"[-3]) // expect: b
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IO.print("abcd"[-2]) // expect: c
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IO.print("abcd"[-1]) // expect: d
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// Regression: Make sure the string's internal buffer size is correct.
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IO.print("abcd"[1] == "b") // expect: true
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// Indexes by byte, not code point.
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//
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// Bytes: 11111
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// 012345678901234
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// Chars: sø mé ஃ thî ng
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IO.print("søméஃthîng"[0]) // expect: s
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IO.print("søméஃthîng"[1]) // expect: ø
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IO.print("søméஃthîng"[3]) // expect: m
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IO.print("søméஃthîng"[6]) // expect: ஃ
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IO.print("søméஃthîng"[10]) // expect: h
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IO.print("søméஃthîng"[-1]) // expect: g
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IO.print("søméஃthîng"[-2]) // expect: n
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IO.print("søméஃthîng"[-4]) // expect: î
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// If the subscript is in the middle of a UTF-8 sequence, yield an empty string.
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IO.print("søméஃthîng"[2] == "") // expect: true
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IO.print("søméஃthîng"[7] == "") // expect: true
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IO.print("søméஃthîng"[8] == "") // expect: true
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IO.print("søméஃ"[-1] == "") // expect: true
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IO.print("søméஃ"[-2] == "") // expect: true
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// 8-bit clean.
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IO.print("a\0b\0c"[0] == "a") // expect: true
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IO.print("a\0b\0c"[1] == "\0") // expect: true
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IO.print("a\0b\0c"[2] == "b") // expect: true
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IO.print("a\0b\0c"[3] == "\0") // expect: true
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IO.print("a\0b\0c"[4] == "c") // expect: true
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