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discard """
file: "tstring.nim"
output: "OK"
"""
const characters = "abcdefghijklmnopqrstuvwxyz"
const numbers = "1234567890"
var s: string
proc test_string_slice() =
# test "slice of length == len(characters)":
# replace characters completely by numbers
s = characters
s[0..^1] = numbers
doAssert s == numbers
# test "slice of length > len(numbers)":
# replace characters by slice of same length
s = characters
s[1..16] = numbers
doAssert s == "a1234567890rstuvwxyz"
# test "slice of length == len(numbers)":
# replace characters by slice of same length
s = characters
s[1..10] = numbers
doAssert s == "a1234567890lmnopqrstuvwxyz"
# test "slice of length < len(numbers)":
# replace slice of length. and insert remaining chars
s = characters
s[1..4] = numbers
doAssert s == "a1234567890fghijklmnopqrstuvwxyz"
# test "slice of length == 1":
# replace first character. and insert remaining 9 chars
s = characters
s[1..1] = numbers
doAssert s == "a1234567890cdefghijklmnopqrstuvwxyz"
# test "slice of length == 0":
# insert chars at slice start index
s = characters
s[2..1] = numbers
doAssert s == "ab1234567890cdefghijklmnopqrstuvwxyz"
# test "slice of negative length":
# same as slice of zero length
s = characters
s[2..0] = numbers
doAssert s == "ab1234567890cdefghijklmnopqrstuvwxyz"
# bug #6223
doAssertRaises(IndexError):
discard s[0..999]
echo("OK")
test_string_slice()
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