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
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
|
/***************************************************************************
begin : 2004-06-03
copyright : (C) 2004 by Sebastian Stein
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
// for BOOST testing
#include <boost/test/unit_test.hpp>
using boost::unit_test_framework::test_suite;
using boost::unit_test_framework::test_case;
// the class to be tested
#include "ratio.h"
class ratio_test
{
public:
// constructor
ratio_test()
{
}
/** test the constructor of class ratio */
void test_constructor()
{
// check basic initialisation
ratio * ratio_a = new ratio();
BOOST_REQUIRE(ratio_a->numerator() == 0);
BOOST_REQUIRE(ratio_a->denominator() == 1);
// a denominator with value 0 is never allowed
ratio * ratio_b = new ratio(2, 0);
BOOST_REQUIRE(ratio_b->numerator() == 2);
BOOST_REQUIRE(ratio_b->denominator() == 1); // division by zero not allowed
// a new ratio should always be reduced
ratio * ratio_c = new ratio(2, 4);
BOOST_REQUIRE(ratio_c->numerator() == 1);
BOOST_REQUIRE(ratio_c->denominator() == 2);
// check copy constructor
ratio * ratio_d = new ratio(*ratio_c);
BOOST_REQUIRE(ratio_d->numerator() == 1);
BOOST_REQUIRE(ratio_d->denominator() == 2);
// the copy constructor is not allowed to reduce the new ratio
ratio_d->setNumerator(4, false);
ratio * ratio_e = new ratio(*ratio_d);
BOOST_REQUIRE(ratio_e->numerator() == 4);
BOOST_REQUIRE(ratio_e->denominator() == 2);
delete(ratio_a);
delete(ratio_b);
delete(ratio_c);
delete(ratio_d);
delete(ratio_e);
return;
}
/** test set and get functions */
void test_setAndGet()
{
// check setNumerator() and numerator() (get)
ratio * ratio_a = new ratio();
ratio_a->setNumerator(10);
BOOST_REQUIRE(ratio_a->numerator() == 10);
BOOST_REQUIRE(ratio_a->denominator() == 1);
// check setDenominator() and denominator() (get)
ratio_a->setDenominator(7);
BOOST_REQUIRE(ratio_a->numerator() == 10);
BOOST_REQUIRE(ratio_a->denominator() == 7);
// now check if the ratio gets reduced
ratio_a->setNumerator(14);
BOOST_REQUIRE(ratio_a->numerator() == 2);
BOOST_REQUIRE(ratio_a->denominator() == 1);
// lets do the same, but with out reducing
ratio_a->setNumerator(14, false);
ratio_a->setDenominator(7, false);
BOOST_REQUIRE(ratio_a->numerator() == 14);
BOOST_REQUIRE(ratio_a->denominator() == 7);
// now the = operator
ratio * ratio_b = new ratio();
*ratio_b = *ratio_a;
BOOST_REQUIRE(ratio_b->numerator() == 14);
BOOST_REQUIRE(ratio_b->denominator() == 7);
// make sure we didn't just copied the pointers
BOOST_REQUIRE(ratio_a != ratio_b);
delete(ratio_a);
delete(ratio_b);
return;
}
/** test the = operator */
void test_operatorSet()
{
ratio ratio_a;
ratio_a = 8;
BOOST_REQUIRE(ratio_a.numerator() == 8);
BOOST_REQUIRE(ratio_a.denominator() == 1);
ratio ratio_b(2, 3);
ratio_a = ratio_b;
BOOST_REQUIRE(ratio_a.numerator() == 2);
BOOST_REQUIRE(ratio_a.denominator() == 3);
return;
}
/** test the + and - operator */
void test_operatorAddSub()
{
ratio * ratio_a = new ratio();
ratio_a->setNumerator(4, false);
ratio_a->setDenominator(2, false);
ratio * ratio_b = new ratio();
ratio_b->setNumerator(4, false);
ratio_b->setDenominator(8, false);
// check + operator
ratio ratio_c = *ratio_a + *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 5);
BOOST_REQUIRE(ratio_c.denominator() == 2);
// it should be the same if we change the addends
ratio_c = *ratio_b + *ratio_a;
BOOST_REQUIRE(ratio_c.numerator() == 5);
BOOST_REQUIRE(ratio_c.denominator() == 2);
// check - operator
ratio_c = *ratio_b - *ratio_a;
BOOST_REQUIRE(ratio_c.numerator() == -3);
BOOST_REQUIRE(ratio_c.denominator() == 2);
// it should not be the same if we change the subtrahends
ratio_c = *ratio_a - *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 3);
BOOST_REQUIRE(ratio_c.denominator() == 2);
// now check if we can get 0/1
*ratio_a = *ratio_b;
ratio_c = *ratio_a - *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 0);
BOOST_REQUIRE(ratio_c.denominator() == 1);
delete(ratio_a);
delete(ratio_b);
return;
}
/** test the * and / operator */
void test_operatorMulDiv()
{
ratio * ratio_a = new ratio();
ratio_a->setNumerator(4, false);
ratio_a->setDenominator(2, false);
ratio * ratio_b = new ratio();
ratio_b->setNumerator(4, false);
ratio_b->setDenominator(16, false);
// check * operator
ratio ratio_c = *ratio_a * *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 1);
BOOST_REQUIRE(ratio_c.denominator() == 2);
// it should be the same if we change the addends
ratio_c = *ratio_b * *ratio_a;
BOOST_REQUIRE(ratio_c.numerator() == 1);
BOOST_REQUIRE(ratio_c.denominator() == 2);
// check / operator
ratio_c = *ratio_b / *ratio_a;
BOOST_REQUIRE(ratio_c.numerator() == 1);
BOOST_REQUIRE(ratio_c.denominator() == 8);
// it should not be the same if we change the subtrahends
ratio_c = *ratio_a / *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 8);
BOOST_REQUIRE(ratio_c.denominator() == 1);
// now check if we can get 0/1
*ratio_a = 0;
ratio_c = *ratio_a * *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 0);
BOOST_REQUIRE(ratio_c.denominator() == 1);
ratio_c = *ratio_a / *ratio_b;
BOOST_REQUIRE(ratio_c.numerator() == 0);
BOOST_REQUIRE(ratio_c.denominator() == 1);
delete(ratio_a);
delete(ratio_b);
return;
}
/** test function reziproc() */
void test_reziproc()
{
ratio ratio_a(2, 3);
ratio_a.reziproc();
BOOST_REQUIRE(ratio_a.numerator() == 3);
BOOST_REQUIRE(ratio_a.denominator() == 2);
return;
}
/** test function reduce() */
void test_reduce()
{
ratio ratio_a;
ratio_a.setNumerator(51, false);
ratio_a.setDenominator(17, false);
ratio_a.reduce();
BOOST_REQUIRE(ratio_a.numerator() == 3);
BOOST_REQUIRE(ratio_a.denominator() == 1);
return;
}
/** test operator compare */
void test_operatorCompare()
{
ratio ratio_a(2, 3);
ratio ratio_b(2, 3);
ratio ratio_c(-2, -3);
ratio ratio_d(2, -3);
ratio ratio_e(-2, 3);
BOOST_REQUIRE((ratio_a == ratio_a) == true);
BOOST_REQUIRE((ratio_a == ratio_b) == true);
BOOST_REQUIRE((ratio_a == ratio_c) == true);
BOOST_REQUIRE((ratio_a == ratio_d) == false);
BOOST_REQUIRE((ratio_a == ratio_e) == false);
return;
}
/** test operator smaller */
void test_operatorSmaller()
{
ratio ratio_a(2, 3);
ratio ratio_b(2, 3);
ratio ratio_c(-2, -3);
ratio ratio_d(2, -3);
ratio ratio_e(-2, 3);
BOOST_REQUIRE((ratio_a < ratio_a) == false);
BOOST_REQUIRE((ratio_a < ratio_b) == false);
BOOST_REQUIRE((ratio_a < ratio_c) == false);
BOOST_REQUIRE((ratio_a < ratio_d) == false);
BOOST_REQUIRE((ratio_a < ratio_e) == false);
ratio_a = ratio(-2, 3);
BOOST_REQUIRE((ratio_a < ratio_a) == false);
BOOST_REQUIRE((ratio_a < ratio_b) == true);
BOOST_REQUIRE((ratio_a < ratio_c) == true);
BOOST_REQUIRE((ratio_a < ratio_d) == false);
BOOST_REQUIRE((ratio_a < ratio_e) == false);
BOOST_REQUIRE((ratio(5, 8) < ratio(2, 1)) == true);
return;
}
/** test operator bigger */
void test_operatorBigger()
{
ratio ratio_a(2, 3);
ratio ratio_b(2, 3);
ratio ratio_c(-2, -3);
ratio ratio_d(2, -3);
ratio ratio_e(-2, 3);
ratio ratio_f(-4, 3);
BOOST_REQUIRE((ratio_a > ratio_a) == false);
BOOST_REQUIRE((ratio_a > ratio_b) == false);
BOOST_REQUIRE((ratio_a > ratio_c) == false);
BOOST_REQUIRE((ratio_a > ratio_d) == true);
BOOST_REQUIRE((ratio_a > ratio_e) == true);
BOOST_REQUIRE((ratio_a > ratio_f) == true);
ratio_a = ratio(-2, 3);
BOOST_REQUIRE((ratio_a > ratio_a) == false);
BOOST_REQUIRE((ratio_a > ratio_b) == false);
BOOST_REQUIRE((ratio_a > ratio_c) == false);
BOOST_REQUIRE((ratio_a > ratio_d) == false);
BOOST_REQUIRE((ratio_a > ratio_e) == false);
BOOST_REQUIRE((ratio_a > ratio_f) == true);
return;
}
private:
// instance of primenumber
ratio m_ratio;
};
class ratio_test_suite : public test_suite
{
public:
ratio_test_suite() : test_suite("ratio_test_suite")
{
// create an instance of the test cases class
boost::shared_ptr<ratio_test> instance(new ratio_test());
// create the test cases
test_case* constructor_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_constructor, instance );
test_case* setAndGet_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_setAndGet, instance );
test_case* operatorSet_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_operatorSet, instance );
test_case* operatorAddSub_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_operatorAddSub, instance );
test_case* operatorMulDiv_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_operatorMulDiv, instance );
test_case* reziproc_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_reziproc, instance );
test_case* reduce_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_reduce, instance );
test_case* operatorCompare_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_operatorCompare, instance );
test_case* operatorSmaller_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_operatorSmaller, instance );
test_case* operatorBigger_test_case = BOOST_CLASS_TEST_CASE(
&ratio_test::test_operatorBigger, instance );
// add the test cases to the test suite
add(constructor_test_case);
add(setAndGet_test_case);
add(operatorSet_test_case);
add(operatorAddSub_test_case);
add(operatorMulDiv_test_case);
add(reziproc_test_case);
add(reduce_test_case);
add(operatorCompare_test_case);
add(operatorSmaller_test_case);
add(operatorBigger_test_case);
}
};
|
