# This file contains a collection of tests for the Tcl built-in 'chan'
# command. Sourcing this file into Tcl runs the tests and generates
# output for errors. No output means no errors were found.
#
# Copyright (c) 2005 Donal K. Fellows
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: chan.test,v 1.8 2006/12/17 03:44:03 das Exp $

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest 2
    namespace import -force ::tcltest::*
}

#
# Note: The tests for the chan methods "create" and "postevent"
# currently reside in the file "ioCmd.test".
#

test chan-1.1 {chan command general syntax} -body {
    chan
} -returnCodes error -result "wrong # args: should be \"chan subcommand ?argument ...?\""
test chan-1.2 {chan command general syntax} -body {
    chan FOOBAR
} -returnCodes error -result "unknown or ambiguous subcommand \"FOOBAR\": must be blocked, close, configure, copy, create, eof, event, flush, gets, names, pending, postevent, puts, read, seek, tell, or truncate"

test chan-2.1 {chan command: blocked subcommand} -body {
    chan blocked foo bar
} -returnCodes error -result "wrong # args: should be \"chan blocked channelId\""

test chan-3.1 {chan command: close subcommand} -body {
    chan close foo bar
} -returnCodes error -result "wrong # args: should be \"chan close channelId\""

test chan-4.1 {chan command: configure subcommand} -body {
    chan configure
} -returnCodes error -result "wrong # args: should be \"chan configure channelId ?optionName? ?value? ?optionName value?...\""

test chan-5.1 {chan command: copy subcommand} -body {
    chan copy foo
} -returnCodes error -result "wrong # args: should be \"chan copy input output ?-size size? ?-command callback?\""

test chan-6.1 {chan command: eof subcommand} -body {
    chan eof foo bar
} -returnCodes error -result "wrong # args: should be \"chan eof channelId\""

test chan-7.1 {chan command: event subcommand} -body {
    chan event foo
} -returnCodes error -result "wrong # args: should be \"chan event channelId event ?script?\""

test chan-8.1 {chan command: flush subcommand} -body {
    chan flush foo bar
} -returnCodes error -result "wrong # args: should be \"chan flush channelId\""

test chan-9.1 {chan command: gets subcommand} -body {
    chan gets
} -returnCodes error -result "wrong # args: should be \"chan gets channelId ?varName?\""

test chan-10.1 {chan command: names subcommand} -body {
    chan names foo bar
} -returnCodes error -result "wrong # args: should be \"chan names ?pattern?\""

test chan-11.1 {chan command: puts subcommand} -body {
    chan puts foo bar foo bar
} -returnCodes error -result "wrong # args: should be \"chan puts ?-nonewline? ?channelId? string\""

test chan-12.1 {chan command: read subcommand} -body {
    chan read
} -returnCodes error -result "wrong # args: should be \"chan read channelId ?numChars?\" or \"chan read ?-nonewline? channelId\""

test chan-13.1 {chan command: seek subcommand} -body {
    chan seek foo bar foo bar
} -returnCodes error -result "wrong # args: should be \"chan seek channelId offset ?origin?\""

test chan-14.1 {chan command: tell subcommand} -body {
    chan tell foo bar
} -returnCodes error -result "wrong # args: should be \"chan tell channelId\""

test chan-15.1 {chan command: truncate subcommand} -body {
    chan truncate foo bar foo bar
} -returnCodes error -result "wrong \# args: should be \"chan truncate channelId ?length?\""
test chan-15.2 {chan command: truncate subcommand} -setup {
    set file [makeFile {} testTruncate]
    set f [open $file w+]
    fconfigure $f -translation binary
} -body {
    seek $f 0
    puts -nonewline $f 12345
    seek $f 0
    chan truncate $f 2
    read $f
} -result 12 -cleanup {
    catch {close $f}
    catch {removeFile $file}
}

# TIP 287: chan pending
test chan-16.1 {chan command: pending subcommand} -body {
    chan pending
} -returnCodes error -result "wrong # args: should be \"chan pending mode channelId\""
test chan-16.2 {chan command: pending subcommand} -body {
    chan pending stdin
} -returnCodes error -result "wrong # args: should be \"chan pending mode channelId\""
test chan-16.3 {chan command: pending subcommand} -body {
    chan pending stdin stdout stderr
} -returnCodes error -result "wrong # args: should be \"chan pending mode channelId\""
test chan-16.4 {chan command: pending subcommand} -body {
    chan pending {input output} stdout
} -returnCodes error -result "bad mode \"input output\": must be input or output"
test chan-16.5 {chan command: pending input subcommand} -body {
    chan pending input stdout 
} -result -1
test chan-16.6 {chan command: pending input subcommand} -body {
    chan pending input stdin
} -result 0
test chan-16.7 {chan command: pending input subcommand} -body {
    chan pending input FOOBAR
} -returnCodes error -result "can not find channel named \"FOOBAR\""
test chan-16.8 {chan command: pending input subcommand} -setup {
    set file [makeFile {} testAvailable]
    set f [open $file w+]
    chan configure $f -translation lf -buffering line
} -body {
    chan puts $f foo
    chan puts $f bar
    chan puts $f baz
    chan seek $f 0
    chan gets $f
    chan pending input $f
} -result 8 -cleanup {
    catch {chan close $f}
    catch {removeFile $file}
}
test chan-16.9 {chan command: pending input subcommand} -setup {
    proc chan-16.9-accept {sock addr port} {
        chan configure $sock -blocking 0 -buffering line -buffersize 32
        chan event $sock readable [list chan-16.9-readable $sock]
    }

    proc chan-16.9-readable {sock} {
        set r [chan gets $sock line]
        set l [string length $line]
        set e [chan eof $sock]
        set b [chan blocked $sock]
        set i [chan pending input $sock]

        lappend ::chan-16.9-data $r $l $e $b $i

        if {$r != -1 || $e || $l || !$b || $i > 128} {
            set data [read $sock $i]
            lappend ::chan-16.9-data [string range $data 0 2]
            lappend ::chan-16.9-data [string range $data end-2 end]
            set ::chan-16.9-done 1
            chan event $sock readable {}
        } else {
	    after idle chan-16.9-client
	}
    }

    proc chan-16.9-client {} {
        chan puts -nonewline $::client ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890
        chan flush $::client
    }

    set ::server [socket -server chan-16.9-accept -myaddr 127.0.0.1 0]
    set ::client [socket 127.0.0.1 [lindex [fconfigure $::server -sockname] 2]]
    set ::chan-16.9-data [list]
    set ::chan-16.9-done 0
} -body {
    after idle chan-16.9-client 
    vwait ::chan-16.9-done
    set ::chan-16.9-data
} -result {-1 0 0 1 36 -1 0 0 1 72 -1 0 0 1 108 -1 0 0 1 144 ABC 890} -cleanup {
    catch {chan close $client}
    catch {chan close $server}
    rename chan-16.9-accept {}
    rename chan-16.9-readable {}
    rename chan-16.9-client {}
    unset -nocomplain ::chan-16.9-data
    unset -nocomplain ::chan-16.9-done
    unset -nocomplain ::server
    unset -nocomplain ::client
}
test chan-16.10 {chan command: pending output subcommand} -body {
    chan pending output stdin
} -result -1
test chan-16.11 {chan command: pending output subcommand} -body {
    chan pending output stdout
} -result 0
test chan-16.12 {chan command: pending output subcommand} -body {
    chan pending output FOOBAR
} -returnCodes error -result "can not find channel named \"FOOBAR\""
test chan-16.13 {chan command: pending output subcommand} -setup {
    set file [makeFile {} testPendingOutput]
    set f [open $file w+]
    chan configure $f -translation lf -buffering full -buffersize 1024
} -body {
    set result [list]
    chan puts $f [string repeat x 512]
    lappend result [chan pending output $f]
    chan flush $f
    lappend result [chan pending output $f]
} -result [list 513 0] -cleanup {
    unset -nocomplain result
    catch {chan close $f}
    catch {removeFile $file}
}

cleanupTests
return

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# mode: tcl
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