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56 lines
1.4 KiB
Nim
56 lines
1.4 KiB
Nim
discard """
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file: "tstring.nim"
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output: "OK"
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"""
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const characters = "abcdefghijklmnopqrstuvwxyz"
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const numbers = "1234567890"
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var s: string
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proc test_string_slice() =
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# test "slice of length == len(characters)":
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# replace characters completely by numbers
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s = characters
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s[0..^1] = numbers
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doAssert s == numbers
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# test "slice of length > len(numbers)":
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# replace characters by slice of same length
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s = characters
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s[1..16] = numbers
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doAssert s == "a1234567890rstuvwxyz"
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# test "slice of length == len(numbers)":
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# replace characters by slice of same length
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s = characters
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s[1..10] = numbers
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doAssert s == "a1234567890lmnopqrstuvwxyz"
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# test "slice of length < len(numbers)":
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# replace slice of length. and insert remaining chars
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s = characters
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s[1..4] = numbers
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doAssert s == "a1234567890fghijklmnopqrstuvwxyz"
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# test "slice of length == 1":
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# replace first character. and insert remaining 9 chars
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s = characters
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s[1..1] = numbers
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doAssert s == "a1234567890cdefghijklmnopqrstuvwxyz"
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# test "slice of length == 0":
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# insert chars at slice start index
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s = characters
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s[2..1] = numbers
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doAssert s == "ab1234567890cdefghijklmnopqrstuvwxyz"
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# test "slice of negative length":
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# same as slice of zero length
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s = characters
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s[2..0] = numbers
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doAssert s == "ab1234567890cdefghijklmnopqrstuvwxyz"
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echo("OK")
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test_string_slice()
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