# email.test
#
#	This file tests the correct functioning of the email channels.
#
#
# For unix systems: if this test fails, delete all files of the 
# form ~/.email*, and check the status of your ~/.forward file.
#
# Windows does not have an email channel
#

if {$win == 1} {
    return
}

# Set this to 1 if you want to test the email channel
# and see the note below...

set testEmail 0
if {$testEmail == 0} {
    puts stdout "*** Skipping email tests..."
    return
}


#
# The user should define here his/her email address as the system defines it.
# This version will work only if $USER@hostname is a valid email address for
# the system DP is running on now.
#

if {[catch {set myEmailAddress $env(USER)@cs.cornell.edu}]} {
    puts stdout "USER env. variable not set.  Skipping email tests..."
    return;
}

if {[string compare test [info procs test]] == 1} then {source ../tests/defs}

# set VERBOSE 1

test email-1.1.1 {dp_connect command} {
    list [catch {
        dp_connect email -bar
    } msg] $msg 
} {1 {unknown option "-bar", must be -address or -identifier}}

test email-1.1.2 {dp_connect command} {
    list [catch {
        dp_connect email -bar foo
    } msg] $msg 
} {1 {unknown option "-bar", must be -address or -identifier}}    

#
# Test argument missing checks.
#

test email-1.2.1 {dp_connect command} {
    list [catch {
        dp_connect email -address
    } msg] $msg 
} {1 {value for "-address" missing}}    


test email-1.2.2 {dp_connect command} {
    list [catch {
        dp_connect email -identifier
    } msg] $msg 
} {1 {value for "-identifier" missing}}


test email-1.2.3 {dp_connect command} {
    list [catch {
        dp_connect email
    } msg] $msg 
} {1 {address and/or identifier not defined for email channel}}


test email-1.2.4 {dp_connect command} {
    list [catch {
        dp_connect email -address $myEmailAddress
    } msg] $msg 
} {1 {address and/or identifier not defined for email channel}}


test email-1.2.5 {dp_connect command} {
    list [catch {
        dp_connect email -identifier 100
    } msg] $msg 
} {1 {address and/or identifier not defined for email channel}}


#
# Test type checking of arguments.
#

test email-1.3.1 {dp_connect command} {
    list [catch {
        dp_connect email -address ""
    } msg] $msg 
} {1 {the address for an email channel can not be empty or start with a '*'}}

   
test email-1.3.2 {dp_connect command} {
    list [catch {
        dp_connect email -address "*dp_list"
    } msg] $msg 
} {1 {the address for an email channel can not be empty or start with a '*'}}


test email-1.3.3 {dp_connect command} {
    list [catch {
        dp_connect email -identifier 0
    } msg] $msg 
} {1 {the identifier for an email channel can not be zero, negative, or a string}}

test email-1.3.4 {dp_connect command} {
    list [catch {
        dp_connect email -identifier -45
    } msg] $msg 
} {1 {the identifier for an email channel can not be zero, negative, or a string}}


test email-1.3.5 {dp_connect command} {
    list [catch {
        dp_connect email -identifier "just a string"
    } msg] $msg 
} {1 {expected integer but got "just a string"}}


#
#
#
#

set eChannel {}
test email-1.4.1 {dp_connect command} {
    list [catch {
        set eChannel [dp_connect email -address $myEmailAddress -identifier 100]
    	string range $eChannel 0 4
    } msg] $msg 
} {0 email}


if {$eChannel != ""} {


#
# fconfigure tests
#


test email-1.4.2 {fconfigure email} {
    list [catch {
        fconfigure $eChannel
    } msg] $msg 
} {0 {-blocking 1 -buffering full -buffersize 4096 -eofchar {{} {}} -translation {auto lf} -address mperham@cs.cornell.edu -identifier 100 -peek 0 -sequence 0}}


test email-1.4.3 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -badopt
    } msg] $msg 
} {1 {bad option "-badopt": must be -blocking, -buffering, -buffersize, -eofchar, -translation, or a channel type specific option}} 

test email-1.4.4 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -address something
    } msg] $msg 
} {1 {can't set address after email channel is opened}}

test email-1.4.5 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -identifier 999
    } msg] $msg 
} {1 {can't set identifier after email channel is opened}}


test email-1.4.6 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -blocking no
    } msg] $msg 
} {0 {}}


test email-1.4.7 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -blocking
    } msg] $msg 
} {0 0}

test email-1.4.8 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -peek yes
    } msg] $msg 
} {0 {}}

test email-1.4.9 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -peek
    } msg] $msg 
} {0 1}

test email-1.4.10 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -peek wrong
    } msg] $msg 
} {1 {expected boolean value but got "wrong"}}


test email-1.4.11 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -peek 0
    } msg] $msg 
} {0 {}}

test email-1.4.12 {fconfigure email} {
    list [catch {
        fconfigure $eChannel -buffering no
    } msg] $msg 
} {0 {}}


#
# Test send/receive
#

test udp-1.5.1 {send email} {
    list [catch {
	puts -nonewline $eChannel  "Test1\n"
    } msg] $msg
} {0 {}}



proc SetTo1 {} {
    global flag
    set flag 1
}

set flag 0

proc SetTo2 {} {
    global flag
    set flag 2
}


test email-1.5.2 {fileevent writeable email} {
    list [catch {
	fileevent $eChannel writable SetTo2
	vwait flag
	set flag
    } msg] $msg 
} {0 2}

# Try out the peek option.

test email-1.5.3 {peek & fileevent readable email} {
    list [catch {
	fconfigure $eChannel -peek yes
	fileevent $eChannel writable {}
	fileevent $eChannel readable SetTo1

	# wait for the first message to arrive

	while {$flag != 1} {
	    vwait flag
	}
	set x [list $flag [read $eChannel] [read $eChannel]]
    } msg] $msg 
} [list 0 [list 1 "Test1\n" "Test1\n"]]

# Read the two messages that were sent after resetting the peek option.

test email-1.5.4 {peek & fileevent & readable email} {
    list [catch {
	puts -nonewline $eChannel "Test2\n"
	fconfigure $eChannel -peek no
	set flag 0
	set x [list [read $eChannel]]

	# wait for the second message to arrive

	while {$flag != 1} {
	    vwait flag
	}
	set x [lappend x  [read $eChannel]]
    } msg] $msg 
} [list 0 [list "Test1\n" "Test2\n"]]


test email-1.5.5 {close email} {
    list [catch {
	close $eChannel
    } msg] $msg 
} {0 {}}


test email-1.5.6 {close email} {
    list [catch {
	close $eChannel
    } msg] $msg 
} {1 {can not find channel named "email0"}}


test email-1.5.7 {test send/receive email} {
    list [catch {
	set x "0123456789abcdef"
	set y "qqwertyuiopasdfg"
	for {set i 0} {$i < 6} {set i [expr $i + 1]} {
	    set x $x$x
	    set y $y$y
	}

	set eChannel [dp_connect email -address $myEmailAddress -identifier 100]
	fconfigure $eChannel -buffering none

	puts -nonewline $eChannel $x
	puts -nonewline $eChannel $y

	set flag 0

	fileevent $eChannel readable SetTo1

	vwait flag

	set readX [read $eChannel 1024]

	set flag 0
	vwait flag

	set readY [read $eChannel 1024]

	close $eChannel


	if {([string compare $x$y $readX$readY] == 0)||
	    ([string compare $x$y $readY$readX] == 0)} {
		set rez ok
	    } else {
		set rez failed
	    }

	set rez

    } msg] $msg 
} {0 ok}


# The following close brace matches the line above:
#	if {$eChannel != ""} 

}