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1 | // Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi) |
2 | // | |
3 | // Distributed under the Boost Software License, Version 1.0. (See | |
4 | // accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | // For more information, see http://www.boost.org | |
8 | ||
9 | // tuple_test_bench.cpp -------------------------------- | |
10 | ||
7c673cae | 11 | #include "boost/tuple/tuple.hpp" |
7c673cae FG |
12 | #include "boost/tuple/tuple_comparison.hpp" |
13 | ||
14 | #include "boost/type_traits/is_const.hpp" | |
7c673cae | 15 | #include "boost/ref.hpp" |
20effc67 TL |
16 | #include "boost/core/lightweight_test.hpp" |
17 | ||
7c673cae FG |
18 | #include <string> |
19 | #include <utility> | |
20 | ||
20effc67 TL |
21 | #define BOOST_CHECK BOOST_TEST |
22 | ||
7c673cae FG |
23 | using namespace boost; |
24 | ||
25 | // ---------------------------------------------------------------------------- | |
26 | // helpers | |
27 | // ---------------------------------------------------------------------------- | |
28 | ||
29 | class A {}; | |
30 | class B {}; | |
31 | class C {}; | |
32 | ||
33 | // classes with different kinds of conversions | |
34 | class AA {}; | |
35 | class BB : public AA {}; | |
36 | struct CC { CC() {} CC(const BB&) {} }; | |
37 | struct DD { operator CC() const { return CC(); }; }; | |
38 | ||
39 | // something to prevent warnings for unused variables | |
40 | template<class T> void dummy(const T&) {} | |
41 | ||
42 | // no public default constructor | |
43 | class foo { | |
44 | public: | |
45 | explicit foo(int v) : val(v) {} | |
46 | ||
47 | bool operator==(const foo& other) const { | |
48 | return val == other.val; | |
49 | } | |
50 | ||
51 | private: | |
52 | foo() {} | |
53 | int val; | |
54 | }; | |
55 | ||
56 | // another class without a public default constructor | |
57 | class no_def_constructor { | |
58 | no_def_constructor() {} | |
59 | public: | |
60 | no_def_constructor(std::string) {} | |
61 | }; | |
62 | ||
63 | // A non-copyable class | |
64 | class no_copy { | |
65 | no_copy(const no_copy&) {} | |
66 | public: | |
67 | no_copy() {}; | |
68 | }; | |
69 | ||
70 | ||
71 | // ---------------------------------------------------------------------------- | |
72 | // Testing different element types -------------------------------------------- | |
73 | // ---------------------------------------------------------------------------- | |
74 | ||
75 | ||
76 | typedef tuple<int> t1; | |
77 | ||
78 | typedef tuple<double&, const double&, const double, double*, const double*> t2; | |
79 | typedef tuple<A, int(*)(char, int), C> t3; | |
80 | typedef tuple<std::string, std::pair<A, B> > t4; | |
81 | typedef tuple<A*, tuple<const A*, const B&, C>, bool, void*> t5; | |
82 | typedef tuple<volatile int, const volatile char&, int(&)(float) > t6; | |
83 | ||
20effc67 | 84 | # if !defined(BOOST_BORLANDC) || BOOST_BORLANDC > 0x0551 |
7c673cae FG |
85 | typedef tuple<B(A::*)(C&), A&> t7; |
86 | #endif | |
87 | ||
88 | // ----------------------------------------------------------------------- | |
89 | // -tuple construction tests --------------------------------------------- | |
90 | // ----------------------------------------------------------------------- | |
91 | ||
92 | ||
93 | no_copy y; | |
94 | tuple<no_copy&> x = tuple<no_copy&>(y); // ok | |
95 | ||
96 | char cs[10]; | |
97 | tuple<char(&)[10]> v2(cs); // ok | |
98 | ||
99 | void | |
100 | construction_test() | |
101 | { | |
102 | ||
103 | // Note, the get function can be called without the tuples:: qualifier, | |
104 | // as it is lifted to namespace boost with a "using tuples::get" but | |
105 | // MSVC 6.0 just cannot find get without the namespace qualifier | |
106 | ||
107 | tuple<int> t1; | |
108 | BOOST_CHECK(get<0>(t1) == int()); | |
109 | ||
110 | tuple<float> t2(5.5f); | |
111 | BOOST_CHECK(get<0>(t2) > 5.4f && get<0>(t2) < 5.6f); | |
112 | ||
113 | tuple<foo> t3(foo(12)); | |
114 | BOOST_CHECK(get<0>(t3) == foo(12)); | |
115 | ||
116 | tuple<double> t4(t2); | |
117 | BOOST_CHECK(get<0>(t4) > 5.4 && get<0>(t4) < 5.6); | |
118 | ||
119 | tuple<int, float> t5; | |
120 | BOOST_CHECK(get<0>(t5) == int()); | |
121 | BOOST_CHECK(get<1>(t5) == float()); | |
122 | ||
123 | tuple<int, float> t6(12, 5.5f); | |
124 | BOOST_CHECK(get<0>(t6) == 12); | |
125 | BOOST_CHECK(get<1>(t6) > 5.4f && get<1>(t6) < 5.6f); | |
126 | ||
127 | tuple<int, float> t7(t6); | |
128 | BOOST_CHECK(get<0>(t7) == 12); | |
129 | BOOST_CHECK(get<1>(t7) > 5.4f && get<1>(t7) < 5.6f); | |
130 | ||
131 | tuple<long, double> t8(t6); | |
132 | BOOST_CHECK(get<0>(t8) == 12); | |
133 | BOOST_CHECK(get<1>(t8) > 5.4f && get<1>(t8) < 5.6f); | |
134 | ||
135 | dummy( | |
136 | tuple<no_def_constructor, no_def_constructor, no_def_constructor>( | |
137 | std::string("Jaba"), // ok, since the default | |
138 | std::string("Daba"), // constructor is not used | |
139 | std::string("Doo") | |
140 | ) | |
141 | ); | |
142 | ||
143 | // testing default values | |
144 | dummy(tuple<int, double>()); | |
145 | dummy(tuple<int, double>(1)); | |
146 | dummy(tuple<int, double>(1,3.14)); | |
147 | ||
148 | ||
149 | // dummy(tuple<double&>()); // should fail, not defaults for references | |
150 | // dummy(tuple<const double&>()); // likewise | |
151 | ||
152 | double dd = 5; | |
153 | dummy(tuple<double&>(dd)); // ok | |
154 | ||
155 | dummy(tuple<const double&>(dd+3.14)); // ok, but dangerous | |
156 | ||
157 | // dummy(tuple<double&>(dd+3.14)); // should fail, | |
158 | // // temporary to non-const reference | |
159 | } | |
160 | ||
161 | ||
162 | // ---------------------------------------------------------------------------- | |
163 | // - testing element access --------------------------------------------------- | |
164 | // ---------------------------------------------------------------------------- | |
165 | ||
166 | void element_access_test() | |
167 | { | |
168 | double d = 2.7; | |
169 | A a; | |
170 | tuple<int, double&, const A&, int> t(1, d, a, 2); | |
171 | const tuple<int, double&, const A, int> ct = t; | |
172 | ||
173 | int i = get<0>(t); | |
174 | int i2 = get<3>(t); | |
175 | ||
176 | BOOST_CHECK(i == 1 && i2 == 2); | |
177 | ||
178 | int j = get<0>(ct); | |
179 | BOOST_CHECK(j == 1); | |
180 | ||
181 | get<0>(t) = 5; | |
182 | BOOST_CHECK(t.head == 5); | |
183 | ||
184 | // get<0>(ct) = 5; // can't assign to const | |
185 | ||
186 | double e = get<1>(t); | |
187 | BOOST_CHECK(e > 2.69 && e < 2.71); | |
188 | ||
189 | get<1>(t) = 3.14+i; | |
190 | BOOST_CHECK(get<1>(t) > 4.13 && get<1>(t) < 4.15); | |
191 | ||
192 | // get<4>(t) = A(); // can't assign to const | |
193 | // dummy(get<5>(ct)); // illegal index | |
194 | ||
195 | ++get<0>(t); | |
196 | BOOST_CHECK(get<0>(t) == 6); | |
197 | ||
198 | BOOST_STATIC_ASSERT((boost::is_const<boost::tuples::element<0, tuple<int, float> >::type>::value != true)); | |
199 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION | |
200 | BOOST_STATIC_ASSERT((boost::is_const<boost::tuples::element<0, const tuple<int, float> >::type>::value)); | |
201 | #endif | |
202 | ||
203 | BOOST_STATIC_ASSERT((boost::is_const<boost::tuples::element<1, tuple<int, float> >::type>::value != true)); | |
204 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION | |
205 | BOOST_STATIC_ASSERT((boost::is_const<boost::tuples::element<1, const tuple<int, float> >::type>::value)); | |
206 | #endif | |
207 | ||
208 | ||
209 | dummy(i); dummy(i2); dummy(j); dummy(e); // avoid warns for unused variables | |
210 | } | |
211 | ||
212 | ||
213 | // ---------------------------------------------------------------------------- | |
214 | // - copying tuples ----------------------------------------------------------- | |
215 | // ---------------------------------------------------------------------------- | |
216 | ||
217 | ||
218 | ||
219 | void | |
220 | copy_test() | |
221 | { | |
222 | tuple<int, char> t1(4, 'a'); | |
223 | tuple<int, char> t2(5, 'b'); | |
224 | t2 = t1; | |
225 | BOOST_CHECK(get<0>(t1) == get<0>(t2)); | |
226 | BOOST_CHECK(get<1>(t1) == get<1>(t2)); | |
227 | ||
228 | tuple<long, std::string> t3(2, "a"); | |
229 | t3 = t1; | |
230 | BOOST_CHECK((double)get<0>(t1) == get<0>(t3)); | |
231 | BOOST_CHECK(get<1>(t1) == get<1>(t3)[0]); | |
232 | ||
233 | // testing copy and assignment with implicit conversions between elements | |
234 | // testing tie | |
235 | ||
236 | tuple<char, BB*, BB, DD> t; | |
237 | tuple<int, AA*, CC, CC> a(t); | |
238 | a = t; | |
239 | ||
240 | int i; char c; double d; | |
241 | tie(i, c, d) = make_tuple(1, 'a', 5.5); | |
242 | ||
243 | BOOST_CHECK(i==1); | |
244 | BOOST_CHECK(c=='a'); | |
245 | BOOST_CHECK(d>5.4 && d<5.6); | |
246 | } | |
247 | ||
248 | void | |
249 | mutate_test() | |
250 | { | |
251 | tuple<int, float, bool, foo> t1(5, 12.2f, true, foo(4)); | |
252 | get<0>(t1) = 6; | |
253 | get<1>(t1) = 2.2f; | |
254 | get<2>(t1) = false; | |
255 | get<3>(t1) = foo(5); | |
256 | ||
257 | BOOST_CHECK(get<0>(t1) == 6); | |
258 | BOOST_CHECK(get<1>(t1) > 2.1f && get<1>(t1) < 2.3f); | |
259 | BOOST_CHECK(get<2>(t1) == false); | |
260 | BOOST_CHECK(get<3>(t1) == foo(5)); | |
261 | } | |
262 | ||
263 | // ---------------------------------------------------------------------------- | |
264 | // make_tuple tests ----------------------------------------------------------- | |
265 | // ---------------------------------------------------------------------------- | |
266 | ||
267 | void | |
268 | make_tuple_test() | |
269 | { | |
270 | tuple<int, char> t1 = make_tuple(5, 'a'); | |
271 | BOOST_CHECK(get<0>(t1) == 5); | |
272 | BOOST_CHECK(get<1>(t1) == 'a'); | |
273 | ||
274 | tuple<int, std::string> t2; | |
275 | t2 = boost::make_tuple((short int)2, std::string("Hi")); | |
276 | BOOST_CHECK(get<0>(t2) == 2); | |
277 | BOOST_CHECK(get<1>(t2) == "Hi"); | |
278 | ||
279 | ||
280 | A a = A(); B b; | |
281 | const A ca = a; | |
282 | make_tuple(boost::cref(a), b); | |
283 | make_tuple(boost::ref(a), b); | |
284 | make_tuple(boost::ref(a), boost::cref(b)); | |
285 | ||
286 | make_tuple(boost::ref(ca)); | |
287 | ||
288 | // the result of make_tuple is assignable: | |
289 | BOOST_CHECK(make_tuple(2, 4, 6) == | |
290 | (make_tuple(1, 2, 3) = make_tuple(2, 4, 6))); | |
291 | ||
292 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION | |
293 | make_tuple("Donald", "Daisy"); // should work; | |
294 | #endif | |
295 | // std::make_pair("Doesn't","Work"); // fails | |
296 | ||
297 | // You can store a reference to a function in a tuple | |
298 | tuple<void(&)()> adf(make_tuple_test); | |
299 | ||
300 | dummy(adf); // avoid warning for unused variable | |
301 | ||
302 | // But make_tuple doesn't work | |
303 | // with function references, since it creates a const qualified function type | |
304 | ||
305 | // make_tuple(make_tuple_test); | |
306 | ||
307 | // With function pointers, make_tuple works just fine | |
308 | ||
20effc67 | 309 | #if !defined(BOOST_BORLANDC) || BOOST_BORLANDC > 0x0551 |
7c673cae FG |
310 | make_tuple(&make_tuple_test); |
311 | #endif | |
312 | ||
313 | // NOTE: | |
314 | // | |
315 | // wrapping it the function reference with ref helps on gcc 2.95.2. | |
316 | // on edg 2.43. it results in a catastrophic error? | |
317 | ||
318 | // make_tuple(ref(foo3)); | |
319 | ||
320 | // It seems that edg can't use implicitly the ref's conversion operator, e.g.: | |
321 | // typedef void (&func_t) (void); | |
322 | // func_t fref = static_cast<func_t>(ref(make_tuple_test)); // works fine | |
323 | // func_t fref = ref(make_tuple_test); // error | |
324 | ||
325 | // This is probably not a very common situation, so currently | |
326 | // I don't know how which compiler is right (JJ) | |
327 | } | |
328 | ||
329 | void | |
330 | tie_test() | |
331 | { | |
332 | int a; | |
333 | char b; | |
334 | foo c(5); | |
335 | ||
336 | tie(a, b, c) = make_tuple(2, 'a', foo(3)); | |
337 | BOOST_CHECK(a == 2); | |
338 | BOOST_CHECK(b == 'a'); | |
339 | BOOST_CHECK(c == foo(3)); | |
340 | ||
341 | tie(a, tuples::ignore, c) = make_tuple((short int)5, false, foo(5)); | |
342 | BOOST_CHECK(a == 5); | |
343 | BOOST_CHECK(b == 'a'); | |
344 | BOOST_CHECK(c == foo(5)); | |
345 | ||
346 | // testing assignment from std::pair | |
347 | int i, j; | |
348 | tie (i, j) = std::make_pair(1, 2); | |
349 | BOOST_CHECK(i == 1 && j == 2); | |
350 | ||
351 | tuple<int, int, float> ta; | |
352 | #ifdef E11 | |
353 | ta = std::make_pair(1, 2); // should fail, tuple is of length 3, not 2 | |
354 | #endif | |
355 | ||
356 | dummy(ta); | |
357 | } | |
358 | ||
359 | ||
360 | // ---------------------------------------------------------------------------- | |
361 | // - testing tuple equality ------------------------------------------------- | |
362 | // ---------------------------------------------------------------------------- | |
363 | ||
364 | void | |
365 | equality_test() | |
366 | { | |
367 | tuple<int, char> t1(5, 'a'); | |
368 | tuple<int, char> t2(5, 'a'); | |
369 | BOOST_CHECK(t1 == t2); | |
370 | ||
371 | tuple<int, char> t3(5, 'b'); | |
372 | tuple<int, char> t4(2, 'a'); | |
373 | BOOST_CHECK(t1 != t3); | |
374 | BOOST_CHECK(t1 != t4); | |
375 | BOOST_CHECK(!(t1 != t2)); | |
376 | } | |
377 | ||
378 | ||
379 | // ---------------------------------------------------------------------------- | |
380 | // - testing tuple comparisons ----------------------------------------------- | |
381 | // ---------------------------------------------------------------------------- | |
382 | ||
383 | void | |
384 | ordering_test() | |
385 | { | |
386 | tuple<int, float> t1(4, 3.3f); | |
387 | tuple<short, float> t2(5, 3.3f); | |
388 | tuple<long, double> t3(5, 4.4); | |
389 | BOOST_CHECK(t1 < t2); | |
390 | BOOST_CHECK(t1 <= t2); | |
391 | BOOST_CHECK(t2 > t1); | |
392 | BOOST_CHECK(t2 >= t1); | |
393 | BOOST_CHECK(t2 < t3); | |
394 | BOOST_CHECK(t2 <= t3); | |
395 | BOOST_CHECK(t3 > t2); | |
396 | BOOST_CHECK(t3 >= t2); | |
397 | ||
398 | } | |
399 | ||
400 | ||
401 | // ---------------------------------------------------------------------------- | |
402 | // - testing cons lists ------------------------------------------------------- | |
403 | // ---------------------------------------------------------------------------- | |
404 | void cons_test() | |
405 | { | |
406 | using tuples::cons; | |
407 | using tuples::null_type; | |
408 | ||
409 | cons<volatile float, null_type> a(1, null_type()); | |
410 | cons<const int, cons<volatile float, null_type> > b(2,a); | |
411 | int i = 3; | |
412 | cons<int&, cons<const int, cons<volatile float, null_type> > > c(i, b); | |
413 | BOOST_CHECK(make_tuple(3,2,1)==c); | |
414 | ||
415 | cons<char, cons<int, cons<float, null_type> > > x; | |
416 | dummy(x); | |
417 | } | |
418 | ||
419 | // ---------------------------------------------------------------------------- | |
420 | // - testing const tuples ----------------------------------------------------- | |
421 | // ---------------------------------------------------------------------------- | |
422 | void const_tuple_test() | |
423 | { | |
424 | const tuple<int, float> t1(5, 3.3f); | |
425 | BOOST_CHECK(get<0>(t1) == 5); | |
426 | BOOST_CHECK(get<1>(t1) == 3.3f); | |
427 | } | |
428 | ||
429 | // ---------------------------------------------------------------------------- | |
430 | // - testing length ----------------------------------------------------------- | |
431 | // ---------------------------------------------------------------------------- | |
432 | void tuple_length_test() | |
433 | { | |
434 | typedef tuple<int, float, double> t1; | |
435 | using tuples::cons; | |
436 | typedef cons<int, cons< float, cons <double, tuples::null_type> > > t1_cons; | |
437 | typedef tuple<> t2; | |
438 | typedef tuples::null_type t3; | |
439 | ||
440 | BOOST_STATIC_ASSERT(tuples::length<t1>::value == 3); | |
441 | BOOST_STATIC_ASSERT(tuples::length<t1_cons>::value == 3); | |
442 | BOOST_STATIC_ASSERT(tuples::length<t2>::value == 0); | |
443 | BOOST_STATIC_ASSERT(tuples::length<t3>::value == 0); | |
444 | ||
445 | } | |
446 | ||
447 | // ---------------------------------------------------------------------------- | |
448 | // - testing swap ----------------------------------------------------------- | |
449 | // ---------------------------------------------------------------------------- | |
450 | void tuple_swap_test() | |
451 | { | |
452 | tuple<int, float, double> t1(1, 2.0f, 3.0), t2(4, 5.0f, 6.0); | |
453 | swap(t1, t2); | |
454 | BOOST_CHECK(get<0>(t1) == 4); | |
455 | BOOST_CHECK(get<1>(t1) == 5.0f); | |
456 | BOOST_CHECK(get<2>(t1) == 6.0); | |
457 | BOOST_CHECK(get<0>(t2) == 1); | |
458 | BOOST_CHECK(get<1>(t2) == 2.0f); | |
459 | BOOST_CHECK(get<2>(t2) == 3.0); | |
460 | ||
461 | int i = 1,j = 2; | |
462 | boost::tuple<int&> t3(i), t4(j); | |
463 | swap(t3, t4); | |
464 | BOOST_CHECK(i == 2); | |
465 | BOOST_CHECK(j == 1); | |
466 | } | |
467 | ||
468 | ||
469 | ||
470 | // ---------------------------------------------------------------------------- | |
471 | // - main --------------------------------------------------------------------- | |
472 | // ---------------------------------------------------------------------------- | |
473 | ||
20effc67 | 474 | int main() { |
7c673cae FG |
475 | |
476 | construction_test(); | |
477 | element_access_test(); | |
478 | copy_test(); | |
479 | mutate_test(); | |
480 | make_tuple_test(); | |
481 | tie_test(); | |
482 | equality_test(); | |
483 | ordering_test(); | |
484 | cons_test(); | |
485 | const_tuple_test(); | |
486 | tuple_length_test(); | |
487 | tuple_swap_test(); | |
7c673cae | 488 | |
20effc67 TL |
489 | return boost::report_errors(); |
490 | } |