Files
Nim/tests/stdlib/tstreams.nim
Danil Yarantsev 2f32b450d3 Really fix StringStream with ARC at compile-time, improve streams test (#19739)
* Fix compile-time StringStream with ARC

* make readDataStr work with ARC, improve test
2022-04-25 11:15:03 +02:00

88 lines
1.8 KiB
Nim

discard """
matrix: "--gc:refc; --gc:arc"
input: "Arne"
output: '''
Hello! What is your name?
Nice name: Arne
fs is: nil
threw exception
_heh_
'''
nimout: '''
I
AM
GROOT
'''
"""
import streams
block tstreams:
var outp = newFileStream(stdout)
var inp = newFileStream(stdin)
writeLine(outp, "Hello! What is your name?")
var line = readLine(inp)
writeLine(outp, "Nice name: " & line)
block tstreams2:
var
fs = newFileStream("amissingfile.txt")
line = ""
echo "fs is: ",repr(fs)
if not isNil(fs):
while fs.readLine(line):
echo line
fs.close()
block tstreams3:
try:
var fs = openFileStream("shouldneverexist.txt")
except IOError:
echo "threw exception"
static:
var s = newStringStream("I\nAM\nGROOT")
for line in s.lines:
echo line
s.close
# bug #12410
var a = newStringStream "hehohihahuhyh"
a.readDataStrImpl = nil
var buffer = "_ooo_"
doAssert a.readDataStr(buffer, 1..3) == 3
echo buffer
block:
var ss = newStringStream("The quick brown fox jumped over the lazy dog.\nThe lazy dog ran")
doAssert(ss.getPosition == 0)
doAssert(ss.peekStr(5) == "The q")
doAssert(ss.getPosition == 0) # haven't moved
doAssert(ss.readStr(5) == "The q")
doAssert(ss.getPosition == 5) # did move
doAssert(ss.peekLine() == "uick brown fox jumped over the lazy dog.")
doAssert(ss.getPosition == 5) # haven't moved
var str = newString(100)
doAssert(ss.peekLine(str))
doAssert(str == "uick brown fox jumped over the lazy dog.")
doAssert(ss.getPosition == 5) # haven't moved
# bug #19707 - Ensure we dont error with writing over literals on arc/orc
ss.setPosition(0)
ss.write("hello")
ss.setPosition(0)
doAssert(ss.peekStr(5) == "hello")
# bug #19716
static: # Ensure streams it doesnt break with nimscript on arc/orc #19716
let s = newStringStream("a")
doAssert s.data == "a"