summaryrefslogtreecommitdiffstats
path: root/tests/foreach.test
blob: 66e626e1e365aefd9038a39fcd8165c70450f431 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
# Commands covered:  foreach, continue, break
#
# 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) 1991-1993 The Regents of the University of California.
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: foreach.test,v 1.3 1999/04/16 00:47:27 stanton Exp $

if {[lsearch [namespace children] ::tcltest] == -1} {
    source [file join [pwd] [file dirname [info script]] defs.tcl]
}

catch {unset a}
catch {unset x}

# Basic "foreach" operation.

test foreach-1.1 {basic foreach tests} {
    set a {}
    foreach i {a b c d} {
	set a [concat $a $i]
    }
    set a
} {a b c d}
test foreach-1.2 {basic foreach tests} {
    set a {}
    foreach i {a b {{c d} e} {123 {{x}}}} {
	set a [concat $a $i]
    }
    set a
} {a b {c d} e 123 {{x}}}
test foreach-1.3 {basic foreach tests} {catch {foreach} msg} 1
test foreach-1.4 {basic foreach tests} {
    catch {foreach} msg
    set msg
} {wrong # args: should be "foreach varList list ?varList list ...? command"}
test foreach-1.5 {basic foreach tests} {catch {foreach i} msg} 1
test foreach-1.6 {basic foreach tests} {
    catch {foreach i} msg
    set msg
} {wrong # args: should be "foreach varList list ?varList list ...? command"}
test foreach-1.7 {basic foreach tests} {catch {foreach i j} msg} 1
test foreach-1.8 {basic foreach tests} {
    catch {foreach i j} msg
    set msg
} {wrong # args: should be "foreach varList list ?varList list ...? command"}
test foreach-1.9 {basic foreach tests} {catch {foreach i j k l} msg} 1
test foreach-1.10 {basic foreach tests} {
    catch {foreach i j k l} msg
    set msg
} {wrong # args: should be "foreach varList list ?varList list ...? command"}
test foreach-1.11 {basic foreach tests} {
    set a {}
    foreach i {} {
	set a [concat $a $i]
    }
    set a
} {}
test foreach-1.12 {foreach errors} {
    list [catch {foreach {{a}{b}} {1 2 3} {}} msg] $msg
} {1 {list element in braces followed by "{b}" instead of space}}
test foreach-1.13 {foreach errors} {
    list [catch {foreach a {{1 2}3} {}} msg] $msg
} {1 {list element in braces followed by "3" instead of space}}
catch {unset a}
test foreach-1.14 {foreach errors} {
    catch {unset a}
    set a(0) 44
    list [catch {foreach a {1 2 3} {}} msg] $msg
} {1 {couldn't set loop variable: "a"}}
test foreach-1.15 {foreach errors} {
    list [catch {foreach {} {} {}} msg] $msg
} {1 {foreach varlist is empty}}
catch {unset a}

test foreach-2.1 {parallel foreach tests} {
    set x {}
    foreach {a b} {1 2 3 4} {
	append x $b $a
    }
    set x
} {2143}
test foreach-2.2 {parallel foreach tests} {
    set x {}
    foreach {a b} {1 2 3 4 5} {
	append x $b $a
    }
    set x
} {21435}
test foreach-2.3 {parallel foreach tests} {
    set x {}
    foreach a {1 2 3} b {4 5 6} {
	append x $b $a
    }
    set x
} {415263}
test foreach-2.4 {parallel foreach tests} {
    set x {}
    foreach a {1 2 3} b {4 5 6 7 8} {
	append x $b $a
    }
    set x
} {41526378}
test foreach-2.5 {parallel foreach tests} {
    set x {}
    foreach {a b} {a b A B aa bb} c {c C cc CC} {
	append x $a $b $c
    }
    set x
} {abcABCaabbccCC}
test foreach-2.6 {parallel foreach tests} {
    set x {}
    foreach a {1 2 3} b {1 2 3} c {1 2 3} d {1 2 3} e {1 2 3} {
	append x $a $b $c $d $e
    }
    set x
} {111112222233333}
test foreach-2.7 {parallel foreach tests} {
    set x {}
    foreach a {} b {1 2 3} c {1 2} d {1 2 3 4} e {{1 2}} {
	append x $a $b $c $d $e
    }
    set x
} {1111 2222334}
test foreach-2.8 {foreach only sets vars if repeating loop} {
    proc foo {} {
        set rgb {65535 0 0}
        foreach {r g b} [set rgb] {}
        return "r=$r, g=$g, b=$b"
    }
    foo
} {r=65535, g=0, b=0}
test foreach-2.9 {foreach only supports local scalar variables} {
    proc foo {} {
        set x {}
        foreach {a(3)} {1 2 3 4} {lappend x [set {a(3)}]}
        set x
    }
    foo
} {1 2 3 4}

test foreach-3.1 {compiled foreach backward jump works correctly} {
    catch {unset x}
    proc foo {arrayName} {
        upvar 1 $arrayName a
        set l {}
        foreach member [array names a] {
            lappend l [list $member [set a($member)]]
        }
        return $l
    }
    array set x {0 zero 1 one 2 two 3 three}
    foo x
} {{0 zero} {1 one} {2 two} {3 three}}

test foreach-4.1 {noncompiled foreach and shared variable or value list objects that are converted to another type} {
    catch {unset x}
    foreach {12.0} {a b c} {
        set x 12.0  
        set x [expr $x + 1]
    }
    set x
} 13.0

# Check "continue".

test foreach-4.1 {continue tests} {catch continue} 4
test foreach-4.2 {continue tests} {
    set a {}
    foreach i {a b c d} {
	if {[string compare $i "b"] == 0} continue
	set a [concat $a $i]
    }
    set a
} {a c d}
test foreach-4.3 {continue tests} {
    set a {}
    foreach i {a b c d} {
	if {[string compare $i "b"] != 0} continue
	set a [concat $a $i]
    }
    set a
} {b}
test foreach-4.4 {continue tests} {catch {continue foo} msg} 1
test foreach-4.5 {continue tests} {
    catch {continue foo} msg
    set msg
} {wrong # args: should be "continue"}

# Check "break".

test foreach-5.1 {break tests} {catch break} 3
test foreach-5.2 {break tests} {
    set a {}
    foreach i {a b c d} {
	if {[string compare $i "c"] == 0} break
	set a [concat $a $i]
    }
    set a
} {a b}
test foreach-5.3 {break tests} {catch {break foo} msg} 1
test foreach-5.4 {break tests} {
    catch {break foo} msg
    set msg
} {wrong # args: should be "break"}

# Test for incorrect "double evaluation" semantics

test foreach-6.1 {delayed substitution of body} {knownBug} {
    proc foo {} {
       set a 0
       foreach a [list 1 2 3] "
           set x $a
       "
       set x
    }
    foo
} {0}

# cleanup
catch {unset a}
catch {unset x}
::tcltest::cleanupTests
return