# This file tests the multiple interpreter facility of Tcl
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
#
# Copyright (c) 1995-1996 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# SCCS: @(#) interp.test 1.24 96/03/27 10:23:29

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

foreach i [interp slaves] {
  interp delete $i
}

proc equiv {x} {return $x}

# Part 0: Check out options for interp command
test interp-1.1 {options for interp command} {
    list [catch {interp} msg] $msg
} {1 {wrong # args: should be "interp cmd ?arg ...?"}}
test interp-1.2 {options for interp command} {
    list [catch {interp frobox} msg] $msg
} {1 {bad option "frobox": should be alias, aliases, create, delete, exists, eval, issafe, share, slaves, target or transfer}}
test interp-1.3 {options for interp command} {
    interp delete
} ""
test interp-1.4 {options for interp command} {
    list [catch {interp delete foo bar} msg] $msg
} {1 {interpreter named "foo" not found}}
test interp-1.5 {options for interp command} {
    list [catch {interp exists foo bar} msg] $msg
} {1 {wrong # args: should be "interp exists ?path?"}}
#
# test interp-0.6 was removed
#
test interp-1.6 {options for interp command} {
    list [catch {interp slaves foo bar zop} msg] $msg
} {1 {wrong # args: should be "interp slaves ?path?"}}
test interp-1.7 {options for interp command} {
    list [catch {interp hello} msg] $msg
} {1 {bad option "hello": should be alias, aliases, create, delete, exists, eval, issafe, share, slaves, target or transfer}}
test interp-1.8 {options for interp command} {
    list [catch {interp -froboz} msg] $msg
} {1 {bad option "-froboz": should be alias, aliases, create, delete, exists, eval, issafe, share, slaves, target or transfer}}
test interp-1.9 {options for interp command} {
    list [catch {interp -froboz -safe} msg] $msg
} {1 {bad option "-froboz": should be alias, aliases, create, delete, exists, eval, issafe, share, slaves, target or transfer}} 
test interp-1.10 {options for interp command} {
    list [catch {interp target} msg] $msg
} {1 {wrong # args: should be "interp target path alias"}}

# Part 1: Basic interpreter creation tests:
test interp-2.1 {basic interpreter creation} {
    interp create a
} a
test interp-2.2 {basic interpreter creation} {
    catch {interp create}
} 0
test interp-2.3 {basic interpreter creation} {
    catch {interp create -safe}
} 0 
test interp-2.4 {basic interpreter creation} {
    list [catch {interp create a} msg] $msg
} {1 {interpreter named "a" already exists, cannot create}}
test interp-2.5 {basic interpreter creation} {
    interp create b -safe
} b
test interp-2.6 {basic interpreter creation} {
    interp create d -safe
} d
test interp-2.7 {basic interpreter creation} {
    list [catch {interp create -froboz} msg] $msg
} {1 {bad option "-froboz": should be -safe}}
test interp-2.8 {basic interpreter creation} {
    interp create -- -froboz
} -froboz
test interp-2.9 {basic interpreter creation} {
    interp create -safe -- -froboz1
} -froboz1
test interp-2.10 {basic interpreter creation} {
    interp create {a x1}
    interp create {a x2}
    interp create {a x3} -safe
} {a x3}

foreach i [interp slaves] {
    interp delete $i
}

# Part 2: Testing "interp slaves" and "interp exists"
test interp-3.1 {testing interp exists and interp slaves} {
    interp slaves
} ""
test interp-3.2 {testing interp exists and interp slaves} {
    interp create a
    interp exists a
} 1
test interp-3.3 {testing interp exists and interp slaves} {
    interp exists nonexistent
} 0
test interp-3.4 {testing interp exists and interp slaves} {
    list [catch {interp slaves a b c} msg] $msg
} {1 {wrong # args: should be "interp slaves ?path?"}}
test interp-3.5 {testing interp exists and interp slaves} {
    list [catch {interp exists a b c} msg] $msg
} {1 {wrong # args: should be "interp exists ?path?"}}
test interp-3.6 {testing interp exists and interp slaves} {
    interp exists
} 1
test interp-3.7 {testing interp exists and interp slaves} {
    interp slaves
} a
test interp-3.8 {testing interp exists and interp slaves} {
    list [catch {interp slaves a b c} msg] $msg
} {1 {wrong # args: should be "interp slaves ?path?"}}
test interp-3.9 {testing interp exists and interp slaves} {
    interp create {a a2} -safe
    interp slaves a
} {a2}
test interp-3.10 {testing interp exists and interp slaves} {
    interp exists {a a2}
} 1

# Part 3: Testing "interp delete"
test interp-3.11 {testing interp delete} {
    interp delete
} ""
test interp-4.1 {testing interp delete} {
    interp delete a
} ""
test interp-4.2 {testing interp delete} {
    list [catch {interp delete nonexistent} msg] $msg
} {1 {interpreter named "nonexistent" not found}}
test interp-4.3 {testing interp delete} {
    list [catch {interp delete x y z} msg] $msg
} {1 {interpreter named "x" not found}}
test interp-4.4 {testing interp delete} {
    interp delete
} ""
test interp-4.5 {testing interp delete} {
    interp create a
    interp create {a x1}
    interp delete {a x1}
    interp slaves a
} ""
test interp-4.6 {testing interp delete} {
    interp create c1
    interp create c2
    interp create c3
    interp delete c1 c2 c3
} ""
test interp-4.7 {testing interp delete} {
    interp create c1
    interp create c2
    list [catch {interp delete c1 c2 c3} msg] $msg
} {1 {interpreter named "c3" not found}}

foreach i [interp slaves] {
    interp delete $i
}

# Part 4: Consistency checking - all nondeleted interpreters should be
# there:
test interp-5.1 {testing consistency} {
    interp slaves
} ""
test interp-5.2 {testing consistency} {
    interp exists a
} 0
test interp-5.3 {testing consistency} {
    interp exists nonexistent
} 0

# Recreate interpreter "a"
interp create a

# Part 5: Testing eval in interpreter object command and with interp command
test interp-6.1 {testing eval} {
    a eval expr 3 + 5
} 8
test interp-6.2 {testing eval} {
    list [catch {a eval foo} msg] $msg
} {1 {invalid command name "foo"}}
test interp-6.3 {testing eval} {
    a eval {proc foo {} {expr 3 + 5}}
    a eval foo
} 8
test interp-6.4 {testing eval} {
    interp eval a foo
} 8

test interp-6.5 {testing eval} {
    interp create {a x2}
    interp eval {a x2} {proc frob {} {expr 4 * 9}}
    interp eval {a x2} frob
} 36
test interp-6.6 {testing eval} {
    list [catch {interp eval {a x2} foo} msg] $msg
} {1 {invalid command name "foo"}}

# UTILITY PROCEDURE RUNNING IN MASTER INTERPRETER:
proc in_master {args} {
     return [list seen in master: $args]
}

# Part 6: Testing basic alias creation
test interp-7.1 {testing basic alias creation} {
    a alias foo in_master
} foo
test interp-7.2 {testing basic alias creation} {
    a alias bar in_master a1 a2 a3
} bar
# Test 6.3 has been deleted.
test interp-7.3 {testing basic alias creation} {
    a alias foo
} in_master
test interp-7.4 {testing basic alias creation} {
    a alias bar
} {in_master a1 a2 a3}
test interp-7.5 {testing basic alias creation} {
    a aliases
} {foo bar}

# Part 7: testing basic alias invocation
test interp-8.1 {testing basic alias invocation} {
    a eval foo s1 s2 s3
} {seen in master: {s1 s2 s3}}
test interp-8.2 {testing basic alias invocation} {
    a eval bar s1 s2 s3
} {seen in master: {a1 a2 a3 s1 s2 s3}}

# Part 8: Testing aliases for non-existent targets
test interp-9.1 {testing aliases for non-existent targets} {
    a alias zop nonexistent-command-in-master
    list [catch {a eval zop} msg] $msg
} {1 {aliased target "nonexistent-command-in-master" for "zop" not found}}
test interp-9.2 {testing aliases for non-existent targets} {
    proc nonexistent-command-in-master {} {return i_exist!}
    a eval zop
} i_exist!

if {[info command nonexistent-command-in-master] != ""} {
    rename nonexistent-command-in-master {}
}

# Recreate interpreter b..
if {![interp exists b]} {
    interp create b
}

# Part 9: Aliasing between interpreters
test interp-10.1 {testing aliasing between interpreters} {
    interp alias a a_alias b b_alias 1 2 3
} a_alias
test interp-10.2 {testing aliasing between interpreters} {
    b eval {proc b_alias {args} {return [list got $args]}}
    a eval a_alias a b c
} {got {1 2 3 a b c}}
test interp-10.3 {testing aliasing between interpreters} {
    b eval {rename b_alias {}}
    list [catch {a eval a_alias a b c} msg] $msg
} {1 {aliased target "b_alias" for "a_alias" not found}}
test interp-10.4 {testing aliasing between interpreters} {
    a aliases
} {foo zop bar a_alias}
test interp-10.5 {testing aliasing between interpreters} {
    interp delete b
    a aliases
} {foo zop bar}

# Recreate interpreter b..
if {![interp exists b]} {
    interp create b
}

test interp-10.6 {testing aliasing between interpreters} {
    interp alias a a_command b b_command a1 a2 a3
    b alias b_command in_master b1 b2 b3
    a eval a_command m1 m2 m3
} {seen in master: {b1 b2 b3 a1 a2 a3 m1 m2 m3}}
test interp-10.7 {testing aliases between interpreters} {
    interp alias "" foo a zoppo
    a eval {proc zoppo {x} {list $x $x $x}}
    set x [foo 33]
    a eval {rename zoppo {}}
    interp alias "" foo a {}
    equiv $x
} {33 33 33}

# Part 10: Testing "interp target"
test interp-11.1 {testing interp target} {
    list [catch {interp target} msg] $msg
} {1 {wrong # args: should be "interp target path alias"}}
test interp-11.2 {testing interp target} {
    list [catch {interp target nosuchinterpreter foo} msg] $msg
} {1 {could not find interpreter "nosuchinterpreter"}}
test interp-11.3 {testing interp target} {
    a alias boo no_command
    interp target a boo
} ""
test interp-11.4 {testing interp target} {
    interp create x1
    x1 eval interp create x2
    x1 eval x2 eval interp create x3
    interp create y1
    y1 eval interp create y2
    y1 eval y2 eval interp create y3
    interp alias {x1 x2 x3} xcommand {y1 y2 y3} ycommand
    interp target {x1 x2 x3} xcommand
} {y1 y2 y3}
test interp-11.5 {testing interp target} {
    list [catch {x1 eval {interp target {x2 x3} xcommand}} msg] $msg
} {1 {target interpreter for alias "xcommand" in path "x2 x3" is not my descendant}}

# Part 11: testing "interp issafe"
test interp-12.1 {testing interp issafe} {
    interp issafe
} 0
test interp-12.2 {testing interp issafe} {
    interp issafe a
} 0
test interp-12.3 {testing interp issafe} {
    interp create {a x3} -safe
    interp issafe {a x3}
} 1
test interp-12.4 {testing interp issafe} {
    interp create {a x3 foo}
    interp issafe {a x3 foo}
} 1

# Part 12: testing interpreter object command "issafe" sub-command
test interp-13.1 {testing foo issafe} {
    a issafe
} 0
test interp-13.2 {testing foo issafe} {
    a eval x3 issafe
} 1
test interp-13.3 {testing foo issafe} {
    a eval x3 eval foo issafe
} 1

# part 13: testing interp aliases
test interp-14.1 {testing interp aliases} {
    interp aliases
} ""
test interp-14.2 {testing interp aliases} {
    interp aliases a
} {boo foo zop bar a_command}
test interp-14.3 {testing interp aliases} {
    interp alias {a x3} froboz "" puts
    interp aliases {a x3}
} froboz

test interp-15.1 {testing file sharing} {
    interp create z
    z eval close stdout
    list [catch {z eval puts hello} msg] $msg
} {1 {can not find channel named "stdout"}}
test interp-15.2 {testing file sharing} {
    set f [open foo w]
    interp share "" $f z
    z eval puts $f hello
    z eval close $f
    close $f
} ""
test interp-15.3 {testing file sharing} {
    interp create xsafe -safe
    list [catch {xsafe eval puts hello} msg] $msg
} {1 {can not find channel named "stdout"}}
test interp-15.4 {testing file sharing} {
    set f [open foo w]
    interp share "" $f xsafe
    xsafe eval puts $f hello
    xsafe eval close $f
    close $f
} ""
test interp-15.5 {testing file sharing} {
    interp share "" stdout xsafe
    list [catch {xsafe eval gets stdout} msg] $msg
} {1 {channel "stdout" wasn't opened for reading}}
test interp-15.6 {testing file sharing} {
    set f [open foo w]
    interp share "" $f xsafe
    set x [list [catch [list xsafe eval gets $f] msg] $msg]
    close $f
    string compare [string tolower $x] \
		[list 1 [format "channel \"%s\" wasn't opened for reading" $f]]
} 0
test interp-15.7 {testing file transferring} {
    set f [open foo w]
    interp transfer "" $f xsafe
    xsafe eval puts $f hello
    xsafe eval close $f
} ""
test interp-15.8 {testing file transferring} {
    set f [open foo w]
    interp transfer "" $f xsafe
    xsafe eval close $f
    set x [list [catch {close $f} msg] $msg]
    string compare [string tolower $x] \
		[list 1 [format "can not find channel named \"%s\"" $f]]
} 0
removeFile foo

#
# Torture tests for interpreter deletion order
#
proc kill {} {interp delete xxx}

test interp-15.9 {testing deletion order} {
    interp create xxx
    xxx alias kill kill
    list [catch {xxx eval kill} msg] $msg
} {0 {}}
test interp-16.1 {testing deletion order} {
    interp create xxx
    interp create {xxx yyy}
    interp alias {xxx yyy} kill "" kill
    list [catch {interp eval {xxx yyy} kill} msg] $msg
} {0 {}}
test interp-16.2 {testing deletion order} {
    interp create xxx
    interp create {xxx yyy}
    interp alias {xxx yyy} kill "" kill
    list [catch {xxx eval yyy eval kill} msg] $msg
} {0 {}}
test interp-16.3 {testing deletion order} {
    interp create xxx
    interp create ddd
    xxx alias kill kill
    interp alias ddd kill xxx kill
    set x [ddd eval kill]
    interp delete ddd
    set x
} ""
test interp-16.4 {testing deletion order} {
    interp create xxx
    interp create {xxx yyy}
    interp alias {xxx yyy} kill "" kill
    interp create ddd
    interp alias ddd kill {xxx yyy} kill
    set x [ddd eval kill]
    interp delete ddd
    set x
} ""

#
# Alias loop prevention testing.
#

test interp-16.5 {alias loop prevention} {
    list [catch {interp alias {} a {} a} msg] $msg
} {1 {cannot define or rename alias "a": would create a loop}}
test interp-17.1 {alias loop prevention} {
    catch {interp delete x}
    interp create x
    x alias a loop
    list [catch {interp alias {} loop x a} msg] $msg
} {1 {cannot define or rename alias "loop": would create a loop}}
test interp-17.2 {alias loop prevention} {
    catch {interp delete x}
    interp create x
    interp alias x a x b
    list [catch {interp alias x b x a} msg] $msg
} {1 {cannot define or rename alias "b": would create a loop}}
test interp-17.3 {alias loop prevention} {
    catch {interp delete x}
    interp create x
    interp alias x b x a
    list [catch {x eval rename b a} msg] $msg
} {1 {cannot define or rename alias "b": would create a loop}}
test interp-17.4 {alias loop prevention} {
    catch {interp delete x}
    interp create x
    x alias z l1
    interp alias {} l2 x z
    list [catch {rename l2 l1} msg] $msg
} {1 {cannot define or rename alias "l2": would create a loop}}

#
# Test robustness of Tcl_DeleteInterp when applied to a slave interpreter.
# If there are bugs in the implementation these tests are likely to expose
# the bugs as a core dump.
#

if {[info commands testinterpdelete] != ""} {
    test interp-17.5 {testing Tcl_DeleteInterp vs slaves} {
	list [catch {testinterpdelete} msg] $msg
    } {1 {wrong # args: should be "testinterpdelete path"}}
    test interp-18.1 {testing Tcl_DeleteInterp vs slaves} {
	catch {interp delete a}
	interp create a
	testinterpdelete a
    } ""
    test interp-18.2 {testing Tcl_DeleteInterp vs slaves} {
	catch {interp delete a}
	interp create a
	interp create {a b}
	testinterpdelete {a b}
    } ""
    test interp-18.3 {testing Tcl_DeleteInterp vs slaves} {
	catch {interp delete a}
	interp create a
	interp create {a b}
	testinterpdelete a
    } ""
    test interp-18.4 {testing Tcl_DeleteInterp vs slaves} {
	catch {interp delete a}
	interp create a
	interp create {a b}
	interp alias {a b} dodel {} dodel
	proc dodel {x} {testinterpdelete $x}
	list [catch {interp eval {a b} {dodel {a b}}} msg] $msg
    } {0 {}}
    test interp-18.5 {testing Tcl_DeleteInterp vs slaves} {
	catch {interp delete a}
	interp create a
	interp create {a b}
	interp alias {a b} dodel {} dodel
	proc dodel {x} {testinterpdelete $x}
	list [catch {interp eval {a b} {dodel a}} msg] $msg
    } {0 {}}
    test interp-18.6 {eval in deleted interp} {
	catch {interp delete a}
	interp create a
	a eval {
	    proc dodel {} {
		delme
		dosomething else
	    }
	    proc dosomething args {
		puts "I should not have been called!!"
	    }
	}
	a alias delme dela
	proc dela {} {interp delete a}
	list [catch {a eval dodel} msg] $msg
    } {1 {attempt to call eval in deleted interpreter}}
    test interp-18.7 {eval in deleted interp} {
	catch {interp delete a}
	interp create a
	a eval {
	    interp create b
	    b eval {
		proc dodel {} {
		    dela
		}
	    }
	    proc foo {} {
		b eval dela
		dosomething else
	    }
	    proc dosomething args {
		puts "I should not have been called!!"
	    }
	}
	interp alias {a b} dela {} dela
	proc dela {} {interp delete a}
	list [catch {a eval foo} msg] $msg
    } {1 {attempt to call eval in deleted interpreter}}
}

foreach i [interp slaves] {
  interp delete $i
}