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[wxWidgets.git] / tests / longlong / longlongtest.cpp
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1///////////////////////////////////////////////////////////////////////////////
2// Name: tests/longlong/longlong.cpp
3// Purpose: wxLongLong unit test
4// Author: Vadim Zeitlin, Wlodzimierz ABX Skiba
5// Created: 2004-04-01
6// RCS-ID: $Id$
7// Copyright: (c) 2004 Vadim Zeitlin, Wlodzimierz Skiba
8///////////////////////////////////////////////////////////////////////////////
9
10// ----------------------------------------------------------------------------
11// headers
12// ----------------------------------------------------------------------------
13
8899b155 14#include "testprec.h"
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15
16#ifdef __BORLANDC__
17 #pragma hdrstop
18#endif
19
20#ifndef WX_PRECOMP
21 #include "wx/wx.h"
22#endif // WX_PRECOMP
23
24#include "wx/longlong.h"
25#include "wx/timer.h"
26
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27#if wxUSE_LONGLONG
28
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29// ----------------------------------------------------------------------------
30// helpers for testing
31// ----------------------------------------------------------------------------
32
33// number of iterations in loops
95762eaf 34#define ITEMS 1000
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35
36// make a 64 bit number from 4 16 bit ones
37#define MAKE_LL(x1, x2, x3, x4) wxLongLong((x1 << 16) | x2, (x3 << 16) | x3)
38
39// get a random 64 bit number
40#define RAND_LL() MAKE_LL(rand(), rand(), rand(), rand())
41
42static const long testLongs[] =
43{
44 0,
45 1,
46 -1,
47 LONG_MAX,
48 LONG_MIN,
49 0x1234,
50 -0x1234
51};
52
53// ----------------------------------------------------------------------------
54// test class
55// ----------------------------------------------------------------------------
56
57class LongLongTestCase : public CppUnit::TestCase
58{
59public:
60 LongLongTestCase();
61
62private:
63 CPPUNIT_TEST_SUITE( LongLongTestCase );
64 CPPUNIT_TEST( Conversion );
65 CPPUNIT_TEST( Comparison );
66 CPPUNIT_TEST( Addition );
67 CPPUNIT_TEST( Multiplication );
68 CPPUNIT_TEST( Division );
69 CPPUNIT_TEST( BitOperations );
70 CPPUNIT_TEST( ToString );
bec76e18 71 CPPUNIT_TEST( LoHi );
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72 CPPUNIT_TEST_SUITE_END();
73
74 void Conversion();
75 void Comparison();
76 void Addition();
77 void Multiplication();
78 void Division();
79 void BitOperations();
80 void ToString();
bec76e18 81 void LoHi();
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82
83 DECLARE_NO_COPY_CLASS(LongLongTestCase)
84};
85
86// register in the unnamed registry so that these tests are run by default
87CPPUNIT_TEST_SUITE_REGISTRATION( LongLongTestCase );
88
89// also include in it's own registry so that these tests can be run alone
90CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( LongLongTestCase, "LongLongTestCase" );
91
92LongLongTestCase::LongLongTestCase()
93{
94 srand((unsigned)time(NULL));
95}
96
97void LongLongTestCase::Conversion()
98{
99 for ( size_t n = 0; n < ITEMS; n++ )
100 {
101 wxLongLong a = RAND_LL();
102
103 wxLongLong b(a.GetHi(), a.GetLo());
104 CPPUNIT_ASSERT( a == b );
105
106#if wxUSE_LONGLONG_WX
107 wxLongLongWx c(a.GetHi(), a.GetLo());
108 CPPUNIT_ASSERT( a == c );
109#endif
110
111#if wxUSE_LONGLONG_NATIVE
112 wxLongLongNative d(a.GetHi(), a.GetLo());
113 CPPUNIT_ASSERT( a == d );
114#endif
115 }
116}
117
118void LongLongTestCase::Comparison()
119{
120 static const long ls[2] =
121 {
122 0x1234,
123 -0x1234,
124 };
125
126 wxLongLong lls[2];
127 lls[0] = ls[0];
128 lls[1] = ls[1];
129
130 for ( size_t n = 0; n < WXSIZEOF(testLongs); n++ )
131 {
132 for ( size_t m = 0; m < WXSIZEOF(lls); m++ )
133 {
134 CPPUNIT_ASSERT( (lls[m] < testLongs[n]) == (ls[m] < testLongs[n]) );
135 CPPUNIT_ASSERT( (lls[m] > testLongs[n]) == (ls[m] > testLongs[n]) );
136 CPPUNIT_ASSERT( (lls[m] <= testLongs[n]) == (ls[m] <= testLongs[n]) );
137 CPPUNIT_ASSERT( (lls[m] >= testLongs[n]) == (ls[m] >= testLongs[n]) );
138 CPPUNIT_ASSERT( (lls[m] != testLongs[n]) == (ls[m] != testLongs[n]) );
139 CPPUNIT_ASSERT( (lls[m] == testLongs[n]) == (ls[m] == testLongs[n]) );
140 }
141 }
142}
143
144void LongLongTestCase::Addition()
145{
146 for ( size_t n = 0; n < ITEMS; n++ )
147 {
148 wxLongLong a = RAND_LL();
149 wxLongLong b = RAND_LL();
150 wxLongLong c = a + b;
151
152#if wxUSE_LONGLONG_NATIVE
153 wxLongLongNative a1 = a;
154 wxLongLongNative b1 = b;
155 wxLongLongNative c1 = a1 + b1;
156 CPPUNIT_ASSERT( c == c1 );
157#endif
158
159#if wxUSE_LONGLONG_WX
160 wxLongLongWx a2 = a;
161 wxLongLongWx b2 = b;
162 wxLongLongWx c2 = a2 + b2;
163 CPPUNIT_ASSERT( c == c2 );
164#endif
165 }
166}
167
168void LongLongTestCase::Multiplication()
169{
170 for ( size_t n = 0; n < ITEMS; n++ )
171 {
172 wxLongLong a = RAND_LL();
173 wxLongLong b = RAND_LL();
174 wxLongLong c = a*b;
175
176 wxLongLong a1(a.GetHi(), a.GetLo());
177 wxLongLong b1(b.GetHi(), b.GetLo());
178 wxLongLong c1 = a1*b1;
179 CPPUNIT_ASSERT( c1 == c );
180
181#if wxUSE_LONGLONG_WX
182 wxLongLongWx a2(a.GetHi(), a.GetLo());
183 wxLongLongWx b2(b.GetHi(), b.GetLo());
184 wxLongLongWx c2 = a2*b2;
185 CPPUNIT_ASSERT( c2 == c );
186#endif
187
188#if wxUSE_LONGLONG_NATIVE
189 wxLongLongNative a3(a.GetHi(), a.GetLo());
190 wxLongLongNative b3(b.GetHi(), b.GetLo());
191 wxLongLongNative c3 = a3*b3;
192 CPPUNIT_ASSERT( c3 == c );
193#endif
194 }
195}
196
197void LongLongTestCase::Division()
198{
199 for ( size_t n = 0; n < ITEMS; n++ )
200 {
201 // get a random wxLongLong (shifting by 12 the MSB ensures that the
202 // multiplication will not overflow)
203 wxLongLong a = MAKE_LL((rand() >> 12), rand(), rand(), rand());
204
205 // get a random (but non null) long (not wxLongLong for now) divider
206 long l;
207 do
208 {
209 l = rand();
210 }
211 while ( !l );
212
213 wxLongLong q = a / l;
214 wxLongLong r = a % l;
215
216 CPPUNIT_ASSERT( a == ( q * l + r ) );
217
218#if wxUSE_LONGLONG_WX
219 wxLongLongWx a1(a.GetHi(), a.GetLo());
220 wxLongLongWx q1 = a1 / l;
221 wxLongLongWx r1 = a1 % l;
222 CPPUNIT_ASSERT( q == q1 );
223 CPPUNIT_ASSERT( r == r1 );
224 CPPUNIT_ASSERT( a1 == ( q1 * l + r1 ) );
225#endif
226
227#if wxUSE_LONGLONG_NATIVE
228 wxLongLongNative a2(a.GetHi(), a.GetLo());
229 wxLongLongNative q2 = a2 / l;
230 wxLongLongNative r2 = a2 % l;
231 CPPUNIT_ASSERT( q == q2 );
232 CPPUNIT_ASSERT( r == r2 );
233 CPPUNIT_ASSERT( a2 == ( q2 * l + r2 ) );
234#endif
235 }
236}
237
238void LongLongTestCase::BitOperations()
239{
93a800a9 240 for ( size_t m = 0; m < ITEMS; m++ )
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241 {
242 wxLongLong a = RAND_LL();
243
244 for ( size_t n = 0; n < 33; n++ )
245 {
246 wxLongLong b(a.GetHi(), a.GetLo()), c, d = b, e;
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247 d >>= n;
248 c = b >> n;
1b035b8c 249 CPPUNIT_ASSERT( c == d );
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250 d <<= n;
251 e = c << n;
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252 CPPUNIT_ASSERT( d == e );
253
254#if wxUSE_LONGLONG_WX
255 wxLongLongWx b1(a.GetHi(), a.GetLo()), c1, d1 = b1, e1;
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256 d1 >>= n;
257 c1 = b1 >> n;
1b035b8c 258 CPPUNIT_ASSERT( c1 == d1 );
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259 d1 <<= n;
260 e1 = c1 << n;
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261 CPPUNIT_ASSERT( d1 == e1 );
262#endif
263
264#if wxUSE_LONGLONG_NATIVE
265 wxLongLongNative b2(a.GetHi(), a.GetLo()), c2, d2 = b2, e2;
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266 d2 >>= n;
267 c2 = b2 >> n;
1b035b8c 268 CPPUNIT_ASSERT( c2 == d2 );
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269 d2 <<= n;
270 e2 = c2 << n;
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271 CPPUNIT_ASSERT( d2 == e2 );
272#endif
273 }
274 }
275}
276
277void LongLongTestCase::ToString()
278{
279 wxString s1, s2;
280
281 for ( size_t n = 0; n < WXSIZEOF(testLongs); n++ )
282 {
283 wxLongLong a = testLongs[n];
284 s1 = wxString::Format(_T("%ld"), testLongs[n]);
285 s2 = a.ToString();
286 CPPUNIT_ASSERT( s1 == s2 );
287
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288 s2 = wxEmptyString;
289 s2 << a;
290 CPPUNIT_ASSERT( s1 == s2 );
291
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292#if wxUSE_LONGLONG_WX
293 wxLongLongWx a1 = testLongs[n];
294 s2 = a1.ToString();
295 CPPUNIT_ASSERT( s1 == s2 );
296#endif
297
298#if wxUSE_LONGLONG_NATIVE
299 wxLongLongNative a2 = testLongs[n];
300 s2 = a2.ToString();
301 CPPUNIT_ASSERT( s1 == s2 );
302#endif
303 }
304
305 wxLongLong a(0x12345678, 0x87654321);
306 CPPUNIT_ASSERT( a.ToString() == _T("1311768467139281697") );
307 a.Negate();
308 CPPUNIT_ASSERT( a.ToString() == _T("-1311768467139281697") );
309
1d805c14 310 wxLongLong llMin(-2147483647L - 1L, 0);
981cc5bb 311 CPPUNIT_ASSERT( llMin.ToString() == _T("-9223372036854775808") );
1d4037aa 312
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313#if wxUSE_LONGLONG_WX
314 wxLongLongWx a1(a.GetHi(), a.GetLo());
315 CPPUNIT_ASSERT( a1.ToString() == _T("-1311768467139281697") );
316 a1.Negate();
317 CPPUNIT_ASSERT( a1.ToString() == _T("1311768467139281697") );
318#endif
319
320#if wxUSE_LONGLONG_NATIVE
321 wxLongLongNative a2(a.GetHi(), a.GetLo());
322 CPPUNIT_ASSERT( a2.ToString() == _T("-1311768467139281697") );
323 a2.Negate();
324 CPPUNIT_ASSERT( a2.ToString() == _T("1311768467139281697") );
325#endif
326
327}
328
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329void LongLongTestCase::LoHi()
330{
331 wxLongLong ll(123, 456);
332 CPPUNIT_ASSERT_EQUAL( 456u, ll.GetLo() );
333 CPPUNIT_ASSERT_EQUAL( 123, ll.GetHi() );
334
335 wxULongLong ull(987, 654);
336 CPPUNIT_ASSERT_EQUAL( 654u, ull.GetLo() );
337 CPPUNIT_ASSERT_EQUAL( 987u, ull.GetHi() );
338}
339
216a72f3 340#endif // wxUSE_LONGLONG