diff options
Diffstat (limited to 'tests/iogt.test')
| -rw-r--r-- | tests/iogt.test | 183 |
1 files changed, 166 insertions, 17 deletions
diff --git a/tests/iogt.test b/tests/iogt.test index d4c31d2..1ed89f7 100644 --- a/tests/iogt.test +++ b/tests/iogt.test @@ -220,6 +220,36 @@ proc id_fulltrail {var op data} { return $res } +proc id_torture {chan op data} { + switch -- $op { + create/write - + create/read - + delete/write - + delete/read - + clear_read {;#ignore} + flush/write - + flush/read {} + write { + global level + if {$level} { + return + } + incr level + testchannel unstack $chan + testchannel transform $chan \ + -command [namespace code [list id_torture $chan]] + return $data + } + read { + testchannel unstack $chan + testchannel transform $chan \ + -command [namespace code [list id_torture $chan]] + return $data + } + query/maxRead {return -1} + } +} + proc counter {var op data} { namespace upvar [namespace current] $var n @@ -280,7 +310,7 @@ proc counter_audit {var vtrail op data} { } proc rblocks {var vtrail n op data} { - namespace upvar [namespace current] $var n $vtrail trail + namespace upvar [namespace current] $var buf $vtrail trail set res {} @@ -326,6 +356,11 @@ proc audit_ops {var -attach channel} { proc audit_flow {var -attach channel} { testchannel transform $channel -command [namespace code [list id_fulltrail $var]] } + +proc torture {-attach channel} { + testchannel transform $channel -command [namespace code [list id_torture $channel]] +} + proc stopafter {var n -attach channel} { namespace upvar [namespace current] $var vn set vn $n @@ -445,6 +480,7 @@ query/maxRead read query/maxRead flush/read +query/maxRead delete/read -------- create/write @@ -491,6 +527,7 @@ read { } query/maxRead {} -1 flush/read {} {} +query/maxRead {} -1 delete/read {} *ignored* -------- create/write {} *ignored* @@ -542,15 +579,35 @@ write %^&*()_+-= %^&*()_+-= write { } { } +query/maxRead {} -1 delete/read {} *ignored* flush/write {} {} delete/write {} *ignored*} +test iogt-2.4 {basic I/O, mixed trail} {testchannel} { + set fh [open $path(dummy) r] + torture -attach $fh + chan configure $fh -buffersize 2 + set x [read $fh] + testchannel unstack $fh + close $fh + set x +} {} +test iogt-2.5 {basic I/O, mixed trail} {testchannel} { + set ::level 0 + set fh [open $path(dummyout) w] + torture -attach $fh + puts -nonewline $fh abcdef + flush $fh + testchannel unstack $fh + close $fh +} {} + test iogt-3.0 {Tcl_Channel valid after stack/unstack, fevent handling} -setup { proc DoneCopy {n {err {}}} { variable copy 1 } -} -constraints {testchannel hangs} -body { +} -constraints {testchannel knownBug} -body { # This test to check the validity of aquired Tcl_Channel references is not # possible because even a backgrounded fcopy will immediately start to # copy data, without waiting for the event loop. This is done only in case @@ -561,6 +618,7 @@ test iogt-3.0 {Tcl_Channel valid after stack/unstack, fevent handling} -setup { # delay, causing the fcopy to underflow immediately. set fin [open $path(dummy) r] fevent 1000 500 {20 20 20 10 1 1} { + variable copy close $fin set fout [open dummyout w] flush $sock; # now, or fcopy will error us out @@ -594,23 +652,30 @@ test iogt-4.0 {fileevent readable, after transform} -setup { proc Done {args} { variable stop 1 } -} -constraints {testchannel hangs} -body { + proc Get {sock} { + variable trail + variable got + if {[eof $sock]} { + Done + lappend trail "xxxxxxxxxxxxx" + close $sock + return + } + lappend trail "vvvvvvvvvvvvv" + lappend trail "\tgot: [lappend got "\[\[[read $sock]\]\]"]" + lappend trail "=============" + #puts stdout $__ ; flush stdout + #read $sock + } + +} -constraints {testchannel knownBug} -body { fevent 1000 500 {20 20 20 10 1} { + variable stop audit_flow trail -attach $sock rblocks_t rbuf trail 23 -attach $sock - fileevent $sock readable [namespace code { - if {[eof $sock]} { - Done - lappend trail "xxxxxxxxxxxxx" - close $sock - } else { - lappend trail "vvvvvvvvvvvvv" - lappend trail "\tgot: [lappend got "\[\[[read $sock]\]\]"]" - lappend trail "=============" - #puts stdout $__; flush stdout - #read $sock - } - }] + + fileevent $sock readable [namespace code [list Get $sock]] + flush $sock; # Now, or fcopy will error us out # But the 1 second delay should be enough to initialize everything # else here. @@ -619,6 +684,7 @@ test iogt-4.0 {fileevent readable, after transform} -setup { join [list [join $got \n] ~~~~~~~~ [join $trail \n]] \n } -cleanup { rename Done {} + rename Get {} } -result {[[]] [[abcdefghijklmnopqrstuvw]] [[xyz0123456789,./?><;'\|]] @@ -706,7 +772,7 @@ test iogt-5.0 {EOF simulation} -setup { set fin [open $path(dummy) r] set fout [open $path(dummyout) w] set trail [list] -} -constraints {testchannel unknownFailure} -result { +} -constraints {testchannel knownBug} -result { audit_flow trail -attach $fin stopafter_audit d trail 20 -attach $fin audit_flow trail -attach $fout @@ -785,6 +851,15 @@ test iogt-6.0 {Push back} -constraints testchannel -body { close $f } -result {xxx} test iogt-6.1 {Push back and up} -constraints {testchannel knownBug} -body { + + # This test demonstrates the bug/misfeature in the stacked + # channel implementation that data can be discarded if it is + # read into the buffers of one channel in the stack, and then + # that channel is popped before anything above it reads. + # + # This bug can be worked around by always setting -buffersize + # to 1, but who wants to do that? + set f [open $path(dummy) r] # contents of dummy = "abcdefghi..." read $f 3; # skip behind "abc" @@ -796,6 +871,80 @@ test iogt-6.1 {Push back and up} -constraints {testchannel knownBug} -body { close $f } -result {xxxghi} + +# Driver for a base channel that emits several short "files" +# with each terminated by a fleeting EOF + proc driver {cmd args} { + variable buffer + variable index + set chan [lindex $args 0] + switch -- $cmd { + initialize { + set index($chan) 0 + set buffer($chan) ..... + return {initialize finalize watch read} + } + finalize { + if {![info exists index($chan)]} {return} + unset index($chan) buffer($chan) + return + } + watch {} + read { + set n [lindex $args 1] + if {![info exists index($chan)]} { + driver initialize $chan + } + set new [expr {$index($chan) + $n}] + set result [string range $buffer($chan) $index($chan) $new-1] + set index($chan) $new + if {[string length $result] == 0} { + driver finalize $chan + } + return $result + } + } + } + +test iogt-7.0 {Handle fleeting EOF} -constraints {testchannel} -body { + set chan [chan create read [namespace which driver]] + identity -attach $chan + list [eof $chan] [read $chan] [eof $chan] [read $chan 0] [eof $chan] \ + [read $chan] [eof $chan] +} -cleanup { + close $chan +} -result {0 ..... 1 {} 0 ..... 1} + +proc delay {op data} { + variable store + switch -- $op { + create/write - create/read - + delete/write - delete/read - + flush/write - write - + clear_read {;#ignore} + flush/read - + read { + if {![info exists store]} {set store {}} + set reply $store + set store $data + return $reply + } + query/maxRead {return -1} + } +} + +test iogt-7.1 {Handle fleeting EOF} -constraints {testchannel} -body { + set chan [chan create read [namespace which driver]] + testchannel transform $chan -command [namespace code delay] + list [eof $chan] [read $chan] [eof $chan] [read $chan 0] [eof $chan] \ + [read $chan] [eof $chan] +} -cleanup { + close $chan +} -result {0 ..... 1 {} 0 ..... 1} + +rename delay {} +rename driver {} + # cleanup foreach file [list dummy dummyout __echo_srv__.tcl] { removeFile $file |