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* Error -> Defect for defects The distinction between Error and Defect is subjective, context-dependent and somewhat arbitrary, so when looking at an exception, it's hard to guess what it is - this happens often when looking at a `raises` list _without_ opening the corresponding definition and digging through layers of inheritance. With the help of a little consistency in naming, it's at least possible to start disentangling the two error types and the standard lib can set a good example here.
23 lines
1020 B
Nim
23 lines
1020 B
Nim
include nre
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import unittest
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suite "replace":
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test "replace with 0-length strings":
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check("".replace(re"1", proc (v: RegexMatch): string = "1") == "")
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check(" ".replace(re"", proc (v: RegexMatch): string = "1") == "1 1")
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check("".replace(re"", proc (v: RegexMatch): string = "1") == "1")
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test "regular replace":
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check("123".replace(re"\d", "foo") == "foofoofoo")
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check("123".replace(re"(\d)", "$1$1") == "112233")
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check("123".replace(re"(\d)(\d)", "$1$2") == "123")
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check("123".replace(re"(\d)(\d)", "$#$#") == "123")
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check("123".replace(re"(?<foo>\d)(\d)", "$foo$#$#") == "1123")
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check("123".replace(re"(?<foo>\d)(\d)", "${foo}$#$#") == "1123")
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test "replacing missing captures should throw instead of segfaulting":
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expect IndexDefect: discard "ab".replace(re"(a)|(b)", "$1$2")
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expect IndexDefect: discard "b".replace(re"(a)?(b)", "$1$2")
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expect KeyError: discard "b".replace(re"(a)?", "${foo}")
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expect KeyError: discard "b".replace(re"(?<foo>a)?", "${foo}")
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