testConstraint fileevent        [llength [info commands fileevent]]
testConstraint fcopy            [llength [info commands fcopy]]
testConstraint testfevent       [llength [info commands testfevent]]
testConstraint testchannelevent [llength [info commands testchannelevent]]
testConstraint testmainthread   [llength [info commands testmainthread]]
testConstraint testthread       [llength [info commands testthread]]
testConstraint testobj		[llength [info commands testobj]]
testConstraint knownMsvcBug [expr {![info exists ::env(TRAVIS_OS_NAME)] || ![string match windows $::env(TRAVIS_OS_NAME)]}]

# You need a *very* special environment to do some tests.  In
# particular, many file systems do not support large-files...
testConstraint largefileSupport [expr {$::tcl_platform(os) ne "Darwin"}]

# some tests can only be run is umask is 2
# if "umask" cannot be run, the tests will be skipped.

test io-1.8 {Tcl_WriteChars: WriteChars} {
    # This test written for SF bug #506297.
    #
    # Executing this test without the fix for the referenced bug
    # applied to tcl will cause tcl, more specifically WriteChars, to
    # go into an infinite loop.

    set f [open $path(test2) w]
    fconfigure      $f -encoding iso2022-jp
    puts -nonewline $f [format %s%c [string repeat " " 4] 12399]
    close           $f
    contents $path(test2)
} "    \x1b\$B\$O\x1b(B"

test io-1.9 {Tcl_WriteChars: WriteChars} {
    # When closing a channel with an encoding that appends
    # escape bytes, check for the case where the escape
    # bytes overflow the current IO buffer. The bytes

    lappend sizes [file size $path(test2)]

    set sizes
} {19 19 19 19 19}

test io-2.1 {WriteBytes} {
    # loop until all bytes are written

    set f [open $path(test1) w]
    fconfigure $f  -encoding binary -buffersize 16 -translation crlf
    puts $f "abcdefghijklmnopqrstuvwxyz"
    close $f
    contents $path(test1)
} "abcdefghijklmnopqrstuvwxyz\r\n"
test io-2.2 {WriteBytes: savedLF > 0} {

    close $f
    lappend x [contents $path(test1)]
} [list "123456789012345\r" "123456789012345\r\n12"]
test io-2.3 {WriteBytes: flush on line} {
    # Tcl "line" buffering has weird behavior: if current buffer contains
    # a \n, entire buffer gets flushed.  Logical behavior would be to flush
    # only up to the \n.

    set f [open $path(test1) w]
    fconfigure $f -encoding binary -buffering line -translation crlf
    puts -nonewline $f "\n12"
    set x [contents $path(test1)]
    close $f
    set x
} "\r\n12"
test io-2.4 {WriteBytes: reset sawLF after each buffer} {
    set f [open $path(test1) w]
     fconfigure $f -encoding binary -buffering line -translation lf \
	     -buffersize 16
    puts -nonewline $f "abcdefg\nhijklmnopqrstuvwxyz"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} [list "abcdefg\nhijklmno" "abcdefg\nhijklmnopqrstuvwxyz"]

test io-3.1 {WriteChars: compatibility with WriteBytes} {
    # loop until all bytes are written

    set f [open $path(test1) w]
    fconfigure $f -encoding ascii -buffersize 16 -translation crlf
    puts $f "abcdefghijklmnopqrstuvwxyz"
    close $f
    contents $path(test1)
} "abcdefghijklmnopqrstuvwxyz\r\n"
test io-3.2 {WriteChars: compatibility with WriteBytes: savedLF > 0} {

    close $f
    lappend x [contents $path(test1)]
} [list "123456789012345\r" "123456789012345\r\n12"]
test io-3.3 {WriteChars: compatibility with WriteBytes: flush on line} {
    # Tcl "line" buffering has weird behavior: if current buffer contains
    # a \n, entire buffer gets flushed.  Logical behavior would be to flush
    # only up to the \n.

    set f [open $path(test1) w]
    fconfigure $f -encoding ascii -buffering line -translation crlf
    puts -nonewline $f "\n12"
    set x [contents $path(test1)]
    close $f
    set x
} "\r\n12"
test io-3.4 {WriteChars: loop over stage buffer} {
    # stage buffer maps to more than can be queued at once.

    set f [open $path(test1) w]
    fconfigure $f -encoding jis0208 -buffersize 16
    puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} [list "!)!)!)!)!)!)!)!)" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test io-3.5 {WriteChars: saved != 0} {
    # Bytes produced by UtfToExternal from end of last channel buffer
    # had to be moved to beginning of next channel buffer to preserve
    # requested buffersize.

    set f [open $path(test1) w]
    fconfigure $f -encoding jis0208 -buffersize 17
    puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} [list "!)!)!)!)!)!)!)!)!" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test io-3.6 {WriteChars: (stageRead + dstWrote == 0)} {
    # One incomplete UTF-8 character at end of staging buffer.  Backup

    # When translating UTF-8 to external, the produced bytes went past end
    # of the channel buffer.  This is done purpose -- we then truncate the
    # bytes at the end of the partial character to preserve the requested
    # blocksize on flush.  The truncated bytes are moved to the beginning
    # of the next channel buffer.

    set f [open $path(test1) w]
    fconfigure $f -encoding jis0208 -buffersize 17
    puts -nonewline $f "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} [list "!)!)!)!)!)!)!)!)!" "!)!)!)!)!)!)!)!)!)!)!)!)!)!)!)"]
test io-3.8 {WriteChars: reset sawLF after each buffer} {
    set f [open $path(test1) w]

    puts -nonewline $f "12345678901\n456789012345678901234"
    close $f
    set x [contents $path(test1)]
} "12345678901\r\n456789012345678901234"

test io-5.1 {CheckFlush: not full} {
    set f [open $path(test1) w]
    fconfigure $f
    puts -nonewline $f "12345678901234567890"
    set x [list [contents $path(test1)]]
    close $f
    lappend x [contents $path(test1)]
} [list "" "12345678901234567890"]
test io-5.2 {CheckFlush: full} {
    set f [open $path(test1) w]

    close $f
    set x
} [list 2 "\u4e00\u4e01"]
set a "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"
append a $a
append a $a
test io-6.6 {Tcl_GetsObj: loop test} {
    # if (dst >= dstEnd)

    set f [open $path(test1) w]
    puts $f $a
    puts $f hi
    close $f
    set f [open $path(test1)]
    set x [list [gets $f line] $line]

    fconfigure $f -translation crlf -buffersize 16
    set x [list [gets $f line] $line [tell $f] [testchannel inputbuffered $f]]
    close $f
    set x
} [list 15 "123456789012345" 17 3]
test io-6.33 {Tcl_GetsObj: crlf mode: buffer exhausted, at eof} {
    # eol still equals dstEnd

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "123456789012345\r"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation crlf -buffersize 16
    set x [list [gets $f line] $line [eof $f]]
    close $f
    set x
} [list 16 "123456789012345\r" 1]
test io-6.34 {Tcl_GetsObj: crlf mode: buffer exhausted, not followed by \n} {
    # not (*eol == '\n')

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "123456789012345\rabcd\r\nefg"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation crlf -buffersize 16
    set x [list [gets $f line] $line [tell $f]]

    set f [open "|[list [interpreter] $path(cat)]" w+]
    fconfigure $f -translation {auto lf} -buffering none
    puts -nonewline $f "bbbbbbbbbbbbbbb\n123456789abcdef\r"
    fconfigure $f -buffersize 16
    set x [list [gets $f]]
    fconfigure $f -blocking 0
    lappend x [gets $f line] $line [testchannel queuedcr $f]
    fconfigure $f -blocking 1
    puts -nonewline $f "\nabcd\refg\x1a"
    lappend x [gets $f line] $line [testchannel queuedcr $f]
    lappend x [gets $f line] $line
    close $f
    set x
} [list "bbbbbbbbbbbbbbb" 15 "123456789abcdef" 1 4 "abcd" 0 3 "efg"]
test io-6.44 {Tcl_GetsObj: input saw cr, not followed by cr} {stdio testchannel openpipe fileevent} {
    # not (*eol == '\n')

    set f [open "|[list [interpreter] $path(cat)]" w+]
    fconfigure $f -translation {auto lf} -buffering none
    puts -nonewline $f "bbbbbbbbbbbbbbb\n123456789abcdef\r"
    fconfigure $f -buffersize 16
    set x [list [gets $f]]
    fconfigure $f -blocking 0
    lappend x [gets $f line] $line [testchannel queuedcr $f]
    fconfigure $f -blocking 1
    puts -nonewline $f "abcd\refg\x1a"
    lappend x [gets $f line] $line [testchannel queuedcr $f]
    lappend x [gets $f line] $line
    close $f
    set x
} [list "bbbbbbbbbbbbbbb" 15 "123456789abcdef" 1 4 "abcd" 0 3 "efg"]

    puts -nonewline $f "123456789012345\r\nabcdefghijklmnopq"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation auto -buffersize 16
    set x [list [gets $f] [testchannel inputbuffered $f]]
    close $f
    set x
} [list "123456789012345" 15]
test io-6.48 {Tcl_GetsObj: auto mode: \r at end of buffer, no more avail} {testchannel} {
    # PeekAhead() did not get any, so (eol >= dstEnd)

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "123456789012345\r"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation auto -buffersize 16
    set x [list [gets $f] [testchannel queuedcr $f]]
    close $f
    set x
} [list "123456789012345" 1]
test io-6.49 {Tcl_GetsObj: auto mode: \r followed by \n} {testchannel} {
    # if (*eol == '\n') {skip++}

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "123456\r\n78901"
    close $f
    set f [open $path(test1)]
    set x [list [gets $f] [testchannel queuedcr $f] [tell $f] [gets $f]]
    close $f
    set x
} [list "123456" 0 8 "78901"]
test io-6.50 {Tcl_GetsObj: auto mode: \r not followed by \n} {testchannel} {
    # not (*eol == '\n')

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "123456\r78901"
    close $f
    set f [open $path(test1)]
    set x [list [gets $f] [testchannel queuedcr $f] [tell $f] [gets $f]]
    close $f
    set x
} [list "123456" 0 7 "78901"]
test io-6.51 {Tcl_GetsObj: auto mode: \n} {
    # else if (*eol == '\n') {goto gotoeol;}

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "123456\n78901"
    close $f
    set f [open $path(test1)]
    set x [list [gets $f] [tell $f] [gets $f]]
    close $f

    fconfigure $f -encoding shiftjis -buffersize 16
    set x [gets $f]
    close $f
    set x
} "1234567890123\uff10\uff11\uff12\uff13\uff14"
test io-7.2 {FilterInputBytes: split up character in middle of buffer} {
    # (bufPtr->nextAdded < bufPtr->bufLength)

    set f [open $path(test1) w]
    fconfigure $f -encoding binary
    puts -nonewline $f "1234567890\n123\x82\x4f\x82\x50\x82"
    close $f
    set f [open $path(test1)]
    fconfigure $f -encoding shiftjis
    set x [list [gets $f line] $line [eof $f]]

    # "${a}\r" was converted in one operation (because ENCODING_LINESIZE
    # is 30).  To check if "\n" follows, calls PeekAhead and determines
    # that cached data is available in buffer w/o having to call driver.

    set x [gets $f]
    close $f
    set x
} $a
unset a
test io-8.5 {PeekAhead: don't peek if last read was short} {stdio testchannel openpipe fileevent} {
    # (bufPtr->nextAdded < bufPtr->length)

    set f [open "|[list [interpreter] $path(cat)]" w+]
    fconfigure $f -translation {auto binary}
    puts -nonewline $f "abcdefghijklmno\r"
    flush $f
    # here
    set x [list [gets $f line] $line [testchannel queuedcr $f]]
    close $f
    set x
} {15 abcdefghijklmno 1}
test io-8.6 {PeekAhead: change to non-blocking mode} {stdio testchannel openpipe fileevent} {
    # ((chanPtr->flags & CHANNEL_NONBLOCKING) == 0)

    set f [open "|[list [interpreter] $path(cat)]" w+]
    fconfigure $f -translation {auto binary} -buffersize 16
    puts -nonewline $f "abcdefghijklmno\r"
    flush $f
    # here
    set x [list [gets $f line] $line [testchannel queuedcr $f]]

    set f [open $path(test1)]
    fconfigure $f -translation crlf
    set x [read $f]
    close $f
    set x
} "abcd\ndef\n"
test io-13.3 {TranslateInputEOL: crlf mode: naked cr} {
    # (src >= srcMax)

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "abcd\r\ndef\r"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation crlf
    set x [read $f]
    close $f
    set x
} "abcd\ndef\r"
test io-13.4 {TranslateInputEOL: crlf mode: cr followed by not \n} {
    # (src >= srcMax)

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "abcd\r\ndef\rfgh"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation crlf
    set x [read $f]
    close $f
    set x
} "abcd\ndef\rfgh"
test io-13.5 {TranslateInputEOL: crlf mode: naked lf} {
    # (src >= srcMax)

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "abcd\r\ndef\nfgh"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation crlf

    set f [open $path(test1)]
    fconfigure $f -translation auto
    set x [read $f]
    close $f
    set x
} "abcd\ndef"
test io-13.10 {TranslateInputEOL: auto mode: \n} {
    # not (*src == '\r')

    set f [open $path(test1) w]
    fconfigure $f -translation lf
    puts -nonewline $f "abcd\ndef"
    close $f
    set f [open $path(test1)]
    fconfigure $f -translation auto

    encoding system ascii
    set f [open $path(test1) w]
    set x [fconfigure $f -encoding]
    close $f
    encoding system $old
	close $a
    set x
} {ascii}
test io-20.2 {Tcl_CreateChannel: initial settings} {win} {
    set f [open $path(test1) w+]
    set x [list [fconfigure $f -eofchar] [fconfigure $f -translation]]
    close $f
    set x
} [list [list \x1a ""] {auto crlf}]
test io-20.3 {Tcl_CreateChannel: initial settings} {unix} {

test io-26.1 {Tcl_GetChannelInstanceData} {stdio openpipe} {
    # "pid" command uses Tcl_GetChannelInstanceData
    # Don't care what pid is (but must be a number), just want to exercise it.

    set f [open "|[list [interpreter] << exit]"]
    expr [pid $f]
    close $f
} {}

# Test flushing. The functions tested here are FlushChannel.

test io-27.1 {FlushChannel, no output buffered} {
    file delete $path(test1)
    set f [open $path(test1) w]
    flush $f

    close $f
    lappend l [file size $path(test1)]
    set l
} {0 60 72}
set path(pipe)   [makeFile {} pipe]
set path(output) [makeFile {} output]
test io-27.6 {FlushChannel, async flushing, async close} \
	{stdio asyncPipeClose openpipe knownMsvcBug} {
    # This test may fail on old Unix systems (seen on IRIX64 6.5) with
    # obsolete gettimeofday() calls.  See Tcl Bugs 3530533, 1942197.
    file delete $path(pipe)
    file delete $path(output)
    set f [open $path(pipe) w]
    puts $f "set f \[[list open $path(output) w]]"
    puts $f {

    # allow a little time for the background process to close.
    # otherwise, the following test fails on the [file delete $path(output)
    # on Windows because a process still has the file open.
    after 100 set v 1; vwait v
    set result
} ok
test io-29.32 {Tcl_WriteChars, background flush to slow reader} \
	{stdio asyncPipeClose openpipe knownMsvcBug} {
    # This test may fail on old Unix systems (seen on IRIX64 6.5) with
    # obsolete gettimeofday() calls.  See Tcl Bugs 3530533, 1942197.
    file delete $path(pipe)
    file delete $path(output)
    set f [open $path(pipe) w]
    puts $f "set f \[[list open $path(output) w]]"
    puts $f {fconfigure $f -translation lf}

    fconfigure $f -translation cr
    puts $f hello\nthere\nand\nhere
    close $f
    set f [open $path(test1) r]
    fconfigure $f -translation crlf
    set x [read $f]
    close $f
    set x
} "hello\rthere\rand\rhere\r"
test io-30.7 {Tcl_Write crlf, Tcl_Read crlf} {
    file delete $path(test1)
    set f [open $path(test1) w]
    fconfigure $f -translation crlf
    puts $f hello\nthere\nand\nhere
    close $f

    set line "123456789ABCDE"	;# 14 char plus crlf
    puts -nonewline $f x	;# shift crlf across block boundary
    for {set i 0} {$i < 700} {incr i} {
	puts $f $line
    }
    close $f
    set f [open $path(test1) r]
    fconfigure $f -translation crlf
    set c ""
    while {[gets $f line] >= 0} {
	append c $line\n
    }
    close $f
    string length $c
} [expr 700*15+1]

    set x [fconfigure $f -buffersize]
    close $f
    set x
} 40000
test io-39.14 {Tcl_SetChannelOption: -encoding, binary & utf-8} {
    file delete $path(test1)
    set f [open $path(test1) w]
    fconfigure $f -encoding {}
    puts -nonewline $f \xe7\x89\xa6
    close $f
    set f [open $path(test1) r]
    fconfigure $f -encoding utf-8
    set x [read $f]
    close $f
    set x

test io-74.1 {[104f2885bb] improper cache validity check} -setup {
    set fn [makeFile {} io-74.1]
    set rfd [open $fn r]
    testobj freeallvars
    interp create slave
} -constraints testobj -body {
    teststringobj set 1 [string range $rfd 0 end]
    read [teststringobj get 1]
    testobj duplicate 1 2
    interp transfer {} $rfd slave
    catch {read [teststringobj get 1]}
    read [teststringobj get 2]
} -cleanup {
    interp delete slave
    testobj freeallvars
    removeFile io-74.1
} -returnCodes error -match glob -result {can not find channel named "*"}

# ### ### ### ######### ######### #########