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+# Commands covered: if
+#
+# 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) 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: @(#) if.test 1.9 97/07/02 16:40:58
+
+if {[string compare test [info procs test]] == 1} then {source defs}
+
+# Basic "if" operation.
+
+catch {unset a}
+test if-1.1 {TclCompileIfCmd: missing if/elseif test} {
+ list [catch {if} msg] $msg
+} {1 {wrong # args: no expression after "if" argument}}
+test if-1.2 {TclCompileIfCmd: error in if/elseif test} {
+ list [catch {if {[error "error in condition"]} foo} msg] $msg
+} {1 {error in condition}}
+test if-1.3 {TclCompileIfCmd: error in if/elseif test} {
+ list [catch {if {1+}} msg] $msg $errorInfo
+} {1 {syntax error in expression "1+"} {syntax error in expression "1+"
+ ("if" test expression)
+ while compiling
+"if {1+}"}}
+test if-1.4 {TclCompileIfCmd: if/elseif test in braces} {
+ set a {}
+ if {1<2} {set a 1}
+ set a
+} {1}
+test if-1.5 {TclCompileIfCmd: if/elseif test not in braces} {
+ set a {}
+ if 1<2 {set a 1}
+ set a
+} {1}
+test if-1.6 {TclCompileIfCmd: multiline test expr} {
+ set a {}
+ if {($tcl_platform(platform) != "foobar1") && \
+ ($tcl_platform(platform) != "foobar2")} {set a 3} else {set a 4}
+ set a
+} 3
+test if-1.7 {TclCompileIfCmd: "then" after if/elseif test} {
+ set a {}
+ if 4>3 then {set a 1}
+ set a
+} {1}
+test if-1.8 {TclCompileIfCmd: keyword other than "then" after if/elseif test} {
+ set a {}
+ catch {if 1<2 therefore {set a 1}} msg
+ set msg
+} {invalid command name "therefore"}
+test if-1.9 {TclCompileIfCmd: missing "then" body} {
+ set a {}
+ catch {if 1<2 then} msg
+ set msg
+} {wrong # args: no script following "then" argument}
+test if-1.10 {TclCompileIfCmd: error in "then" body} {
+ set a {}
+ list [catch {if {$a!="xxx"} then {set}} msg] $msg $errorInfo
+} {1 {wrong # args: should be "set varName ?newValue?"} {wrong # args: should be "set varName ?newValue?"
+ while compiling
+"set"
+ ("if" then script line 1)
+ while compiling
+"if {$a!="xxx"} then {set}"}}
+test if-1.11 {TclCompileIfCmd: error in "then" body} {
+ list [catch {if 2 then {[error "error in then clause"]}} msg] $msg
+} {1 {error in then clause}}
+test if-1.12 {TclCompileIfCmd: "then" body in quotes} {
+ set a {}
+ if 27>17 "append a x"
+ set a
+} {x}
+test if-1.13 {TclCompileIfCmd: computed "then" body} {
+ catch {unset x1}
+ catch {unset x2}
+ set a {}
+ set x1 {append a x1}
+ set x2 {; append a x2}
+ set a {}
+ if 1 $x1$x2
+ set a
+} {x1x2}
+test if-1.14 {TclCompileIfCmd: taking proper branch} {
+ set a {}
+ if 1<2 {set a 1}
+ set a
+} 1
+test if-1.15 {TclCompileIfCmd: taking proper branch} {
+ set a {}
+ if 1>2 {set a 1}
+ set a
+} {}
+test if-1.16 {TclCompileIfCmd: test jumpFalse instruction replacement after long "then" body} {
+ catch {unset i}
+ set a {}
+ if 1<2 {
+ set a 1
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 2
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 3
+ }
+ set a
+} 3
+test if-1.17 {TclCompileIfCmd: if/elseif test in quotes} {
+ set a {}
+ list [catch {if {"0 < 3"} {set a 1}} msg] $msg
+} {1 {expected boolean value but got "0 < 3"}}
+
+
+test if-2.1 {TclCompileIfCmd: "elseif" after if/elseif test} {
+ set a {}
+ if 3>4 {set a 1} elseif 1 {set a 2}
+ set a
+} {2}
+# Since "else" is optional, the "elwood" below is treated as a command.
+# But then there shouldn't be any additional argument words for the "if".
+test if-2.2 {TclCompileIfCmd: keyword other than "elseif"} {
+ set a {}
+ catch {if 1<2 {set a 1} elwood {set a 2}} msg
+ set msg
+} {wrong # args: extra words after "else" clause in "if" command}
+test if-2.3 {TclCompileIfCmd: missing expression after "elseif"} {
+ set a {}
+ catch {if 1<2 {set a 1} elseif} msg
+ set msg
+} {wrong # args: no expression after "elseif" argument}
+test if-2.4 {TclCompileIfCmd: error in expression after "elseif"} {
+ set a {}
+ list [catch {if 3>4 {set a 1} elseif {1>}} msg] $msg $errorInfo
+} {1 {syntax error in expression "1>"} {syntax error in expression "1>"
+ ("if" test expression)
+ while compiling
+"if 3>4 {set a 1} elseif {1>}"}}
+test if-2.5 {TclCompileIfCmd: test jumpFalse instruction replacement after long "elseif" body} {
+ catch {unset i}
+ set a {}
+ if 1>2 {
+ set a 1
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 2
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 3
+ } elseif 1<2 then { #; this if arm should be taken
+ set a 4
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 5
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 6
+ }
+ set a
+} 6
+
+test if-3.1 {TclCompileIfCmd: "else" clause} {
+ set a {}
+ if 3>4 {set a 1} elseif {$a == "foo"} {set a 2} else {set a 3}
+ set a
+} 3
+# Since "else" is optional, the "elsex" below is treated as a command.
+# But then there shouldn't be any additional argument words for the "if".
+test if-3.2 {TclCompileIfCmd: keyword other than "else"} {
+ set a {}
+ catch {if 1<2 then {set a 1} elsex {set a 2}} msg
+ set msg
+} {wrong # args: extra words after "else" clause in "if" command}
+test if-3.3 {TclCompileIfCmd: missing body after "else"} {
+ set a {}
+ catch {if 2<1 {set a 1} else} msg
+ set msg
+} {wrong # args: no script following "else" argument}
+test if-3.4 {TclCompileIfCmd: error compiling body after "else"} {
+ set a {}
+ catch {if 2<1 {set a 1} else {set}} msg
+ set errorInfo
+} {wrong # args: should be "set varName ?newValue?"
+ while compiling
+"set"
+ ("if" else script line 1)
+ while compiling
+"if 2<1 {set a 1} else {set}"}
+test if-3.5 {TclCompileIfCmd: extra arguments after "else" argument} {
+ set a {}
+ catch {if 2<1 {set a 1} else {set a 2} or something} msg
+ set msg
+} {wrong # args: extra words after "else" clause in "if" command}
+# The following test also checks whether contained loops and other
+# commands are properly relocated because a short jump must be replaced
+# by a "long distance" one.
+test if-3.6 {TclCompileIfCmd: test jumpFalse instruction replacement after long "else" clause} {
+ catch {unset i}
+ set a {}
+ if 1>2 {
+ set a 1
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 2
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 3
+ } elseif 1==2 then { #; this if arm should be taken
+ set a 4
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 5
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 6
+ } else {
+ set a 7
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 8
+ while {$a != "xxx"} {
+ break;
+ while {$i >= 0} {
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ if {[string compare $a "bar"] < 0} {
+ set i $i
+ set i [lindex $s $i]
+ }
+ set i [expr $i-1]
+ }
+ }
+ set a 9
+ }
+ set a
+} 9
+
+test if-4.1 {TclCompileIfCmd: "if" command result} {
+ set a {}
+ set a [if 3<4 {set i 27}]
+ set a
+} 27
+test if-4.2 {TclCompileIfCmd: "if" command result} {
+ set a {}
+ set a [if 3>4 {set i 27}]
+ set a
+} {}
+test if-4.3 {TclCompileIfCmd: "if" command result} {
+ set a {}
+ set a [if 0 {set i 1} elseif 1 {set i 2}]
+ set a
+} 2
+test if-4.4 {TclCompileIfCmd: "if" command result} {
+ set a {}
+ set a [if 0 {set i 1} elseif 0 {set i 2} elseif 2>5 {set i 3} else {set i 4}]
+ set a
+} 4
+test if-4.5 {TclCompileIfCmd: return value} {
+ if 0 then {set a 22; concat abc} elseif 1 {concat def} {concat ghi}
+} def
+
+# Check "if" and computed command names.
+
+test if-5.1 {if and computed command names} {
+ set i 0
+ set z if
+ $z 1 {
+ set i 1
+ }
+ set i
+} 1