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discard """
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(IndexDefect):
discard s[0..999]
echo("OK")
proc test_string_cmp() =
let world = "hello\0world"
let earth = "hello\0earth"
let short = "hello\0"
let hello = "hello"
let goodbye = "goodbye"
doAssert world == world
doAssert world != earth
doAssert world != short
doAssert world != hello
doAssert world != goodbye
doAssert cmp(world, world) == 0
doAssert cmp(world, earth) > 0
doAssert cmp(world, short) > 0
doAssert cmp(world, hello) > 0
doAssert cmp(world, goodbye) > 0
test_string_slice()
test_string_cmp()
#--------------------------
# bug #7816
import sugar
import sequtils
proc tester[T](x: T) =
let test = toSeq(0..4).map(i => newSeq[int]())
echo test
tester(1)
# #14497
func reverse*(a: string): string =
result = a
for i in 0 ..< a.len div 2:
swap(result[i], result[^(i + 1)])
doAssert reverse("hello") == "olleh"
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