3 # This file is part of Language::Befunge.
4 # Copyright (c) 2001-2008 Jerome Quelin, all rights reserved.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the same terms as Perl itself.
12 # Language::Befunge::Vector tests
18 use Test::More tests => 94;
20 use Language::Befunge::Vector;
23 # check prereq for test
24 eval "use Test::Exception";
25 my $has_test_exception = defined($Test::Exception::VERSION);
28 my ($v1, $v2, $v3, $v4, @coords);
29 my $v2d = Language::Befunge::Vector->new(3,4);
30 my $v3d = Language::Befunge::Vector->new(5,6,7);
36 $v1 = Language::Befunge::Vector->new(7,8,9);
37 isa_ok($v1, "Language::Befunge::Vector");
38 is($v1->get_dims, 3, "three dimensions");
39 is($v1->get_component(0), 7, "X is correct");
40 is($v1->get_component(1), 8, "Y is correct");
41 is($v1->get_component(2), 9, "Z is correct");
42 is($v1->as_string, '(7,8,9)', "stringifies back to (7,8,9)");
43 is("$v1", '(7,8,9)', "overloaded stringify back to (7,8,9)");
45 skip "need Test::Exception", 1 unless $has_test_exception;
46 throws_ok(sub { Language::Befunge::Vector->new() },
47 qr/Usage/, "LBV->new needs a defined 'dimensions' argument");
52 $v1 = Language::Befunge::Vector->new_zeroes(4);
53 isa_ok($v1, "Language::Befunge::Vector");
54 is($v1->get_dims, 4, "four dimensions");
55 is($v1->get_component(0), 0, "X is correct");
56 is($v1->get_component(1), 0, "Y is correct");
57 is($v1->get_component(2), 0, "Z is correct");
58 is($v1->get_component(3), 0, "T is correct");
59 is("$v1", '(0,0,0,0)', "all values are 0");
61 skip "need Test::Exception", 2 unless $has_test_exception;
62 throws_ok(sub { Language::Befunge::Vector->new_zeroes() },
63 qr/Usage/, "LBV->new_zeroes needs a defined 'dimensions' argument");
64 throws_ok(sub { Language::Befunge::Vector->new_zeroes(0) },
65 qr/Usage/, "LBV->new_zeroes needs a non-zero 'dimensions' argument");
70 $v1 = Language::Befunge::Vector->new(2,3,4,5);
71 $v4 = Language::Befunge::Vector->new(6,7,8,9);
74 is("$v1", "$v2", "v1 has been copied");
76 is("$v1", "(8,10,12,14)", "v1 has had v4 added");
77 is("$v2", "(2,3,4,5)", "v2 hasn't changed");
78 is("$v3", "(2,3,4,5)", "v3 hasn't changed");
86 # get_dims() has already been tested above...
90 # regular behaviour is tested all over this script.
91 $v1 = Language::Befunge::Vector->new(2,3);
93 skip "need Test::Exception", 2 unless $has_test_exception;
94 throws_ok(sub { $v2d->get_component(-1) },
95 qr/No such dimension/, "get_component() checks min dimension");
96 throws_ok(sub { $v1->get_component(2) },
97 qr/No such dimension/, "get_component() checks max dimension");
101 # get_all_components()
102 $v1 = Language::Befunge::Vector->new(2,3,4,5);
103 my @list = $v1->get_all_components;
104 is(scalar @list, 4, "get_all_components() returned 4 elements");
105 is($list[0], 2, "X is 2");
106 is($list[1], 3, "Y is 3");
107 is($list[2], 4, "Z is 4");
108 is($list[3], 5, "T is 5");
111 # as_string() is already tested above.
117 $v1 = Language::Befunge::Vector->new(2,3,4,5);
119 is("$v1", '(0,0,0,0)', "clear() sets all values are 0");
120 is($v1->get_component(0), 0, "X is now 0");
121 is($v1->get_component(1), 0, "Y is now 0");
122 is($v1->get_component(2), 0, "Z is now 0");
123 is($v1->get_component(3), 0, "T is now 0");
127 $v1 = Language::Befunge::Vector->new(2,3,4,5);
128 $v1->set_component(0,9);
129 $v1->set_component(1,6);
130 is($v1->as_string, "(9,6,4,5)", "set_component() works");
131 is($v1->get_component(0), 9, "X is now 9");
132 is($v1->get_component(1), 6, "Y is now 6");
133 is($v1->get_component(2), 4, "Z is still 4");
134 is($v1->get_component(3), 5, "T is still 5");
136 skip "need Test::Exception", 2 unless $has_test_exception;
137 throws_ok(sub { $v1->set_component(-1, 0) },
138 qr/No such dimension/, "set_component() checks min dimension");
139 throws_ok(sub { $v1->set_component(4, 0) },
140 qr/No such dimension/, "set_component() checks max dimension");
147 $v1 = Language::Befunge::Vector->new(-1, -1);
148 $v2 = Language::Befunge::Vector->new( 2, 2);
149 @coords = ( [1,1], [-1,1], [1,-1], [-1,-1], [2,1], [1,2], [2,2] );
150 foreach my $coords ( @coords ) {
151 $v3 = Language::Befunge::Vector->new(@$coords);
152 ok($v3->bounds_check($v1, $v2), "$v3 is within bounds");
154 @coords = ( [3,3], [3,1], [1,3], [-2,1], [1,-2], [-2,-2] );
155 foreach my $coords ( @coords ) {
156 $v3 = Language::Befunge::Vector->new(@$coords);
157 ok(!$v3->bounds_check($v1, $v2), "$v3 is within bounds");
160 skip "need Test::Exception", 3 unless $has_test_exception;
161 throws_ok(sub { $v3d->bounds_check($v1, $v2) },
162 qr/uneven dimensions/, "bounds_check() catches wrong dimension in first arg");
163 throws_ok(sub { $v1->bounds_check($v3d, $v2) },
164 qr/uneven dimensions/, "bounds_check() catches wrong dimension in second arg");
165 throws_ok(sub { $v1->bounds_check($v2, $v3d) },
166 qr/uneven dimensions/, "bounds_check() catches wrong dimension in third arg");
173 $v1 = Language::Befunge::Vector->new(4,5,6);
174 $v2 = Language::Befunge::Vector->new(1,2,3);
176 is("$v1", '(4,5,6)', "addition doesn't change v1");
177 is("$v2", '(1,2,3)', "addition doesn't change v2");
178 isa_ok($v3, "Language::Befunge::Vector");
179 is("$v3", '(5,7,9)', "v3 is v1 plus v2");
181 skip "need Test::Exception", 1 unless $has_test_exception;
182 throws_ok(sub { my $blah = $v2d + $v3d },
183 qr/uneven dimensions/, "misaligned vector arithmetic (+)");
188 $v1 = Language::Befunge::Vector->new(4,5,6);
189 $v2 = Language::Befunge::Vector->new(3,2,1);
191 is("$v1", '(4,5,6)', "substraction doesn't change v1");
192 is("$v2", '(3,2,1)', "substraction doesn't change v2");
193 isa_ok($v3, "Language::Befunge::Vector");
194 is("$v3", '(1,3,5)', "v3 is v1 minus v2");
196 skip "need Test::Exception", 1 unless $has_test_exception;
197 throws_ok(sub { my $blah = $v2d - $v3d },
198 qr/uneven dimensions/, "misaligned vector arithmetic (-)");
203 $v1 = Language::Befunge::Vector->new(4,5,6);
205 is("$v1", '(4,5,6)', "inversion doesn't change v1");
206 is("$v2", '(-4,-5,-6)', "inversion doesn't change v2");
212 $v1 = Language::Befunge::Vector->new(4,5,6);
213 $v2 = Language::Befunge::Vector->new(1,2,3);
215 is("$v1", "(5,7,9)", "inplace addition changes v1");
216 is("$v2", "(1,2,3)", "inplace addition doesn't change v2");
218 skip "need Test::Exception", 1 unless $has_test_exception;
219 throws_ok(sub { $v2d += $v3d },
220 qr/uneven dimensions/, "misaligned vector arithmetic (+=)");
224 # inplace substraction
225 $v1 = Language::Befunge::Vector->new(4,5,6);
226 $v2 = Language::Befunge::Vector->new(3,2,1);
228 is("$v1", "(1,3,5)", "inplace substraction changes v1");
229 is("$v2", "(3,2,1)", "inplace substraction doesn't change v2");
231 skip "need Test::Exception", 1 unless $has_test_exception;
232 throws_ok(sub { $v2d -= $v3d },
233 qr/uneven dimensions/, "misaligned vector arithmetic (-=)");
240 $v1 = Language::Befunge::Vector->new(1,2,3);
241 $v2 = Language::Befunge::Vector->new(1,2,3);
242 ok($v1 == $v1, "v1 == v1");
243 ok($v1 == $v2, "v1 == v2");
244 ok($v2 == $v1, "v2 == v1");
245 @coords = ( [0,2,3], [1,0,3], [1,2,0] );
246 foreach my $coords ( @coords ) {
247 $v3 = Language::Befunge::Vector->new(@$coords);
248 ok(!($v1 == $v3), "!(v1 == $v3)");
249 ok(!($v2 == $v3), "!(v2 == $v3)");
252 skip "need Test::Exception", 1 unless $has_test_exception;
253 throws_ok(sub { $v2d == $v3d },
254 qr/uneven dimensions/, "misaligned vector arithmetic (==)");
259 $v1 = Language::Befunge::Vector->new(1,2,3);
260 $v2 = Language::Befunge::Vector->new(1,2,3);
261 ok(!($v1 != $v1), "!(v1 != v1)");
262 ok(!($v1 != $v2), "!(v1 != v2)");
263 ok(!($v2 != $v1), "!(v2 != v1)");
264 @coords = ( [0,2,3], [1,0,3], [1,2,0] );
265 foreach my $coords ( @coords ) {
266 $v3 = Language::Befunge::Vector->new(@$coords);
267 ok($v1 != $v3, "v1 != $v3)");
268 ok($v2 != $v3, "v2 != $v3)");
271 skip "need Test::Exception", 1 unless $has_test_exception;
272 throws_ok(sub { $v2d != $v3d },
273 qr/uneven dimensions/, "misaligned vector arithmetic (!=)");