forked from 0ad/0ad
elexis
43137fef3f
Differential Revision: https://code.wildfiregames.com/D716
Refs 09e974e1cb
Reviewed By: bb
Change in agreement with leper.
This was SVN commit r19899.
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/* Copyright (C) 2010 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "lib/self_test.h"
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#include "lib/rand.h"
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class TestRand : public CxxTest::TestSuite
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{
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public:
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// complain if huge interval or min > max
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void TestParam()
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{
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debug_SkipErrors(ERR::INVALID_PARAM);
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TS_ASSERT_EQUALS(rand(1, 0), size_t(0));
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TS_ASSERT_EQUALS(rand(2, ~0u), size_t(0));
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const size_t numSkipped = debug_StopSkippingErrors();
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TS_ASSERT_EQUALS(numSkipped, (size_t)2);
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}
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// returned number must be in [min, max)
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void TestReturnedRange()
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{
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for(int i = 0; i < 100; i++)
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{
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size_t min = rand(), max = min+rand();
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size_t x = rand(min, max);
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TS_ASSERT(min <= x && x < max);
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}
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}
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// make sure both possible values are hit
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void TestTwoValues()
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{
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size_t ones = 0, twos = 0;
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for(int i = 0; i < 100; i++)
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{
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size_t x = rand(1, 3);
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// paranoia: don't use array (x might not be 1 or 2 - checked below)
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if(x == 1) ones++;
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if(x == 2) twos++;
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}
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TS_ASSERT_EQUALS(ones+twos, size_t(100));
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TS_ASSERT(ones > 10 && twos > 10);
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}
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};
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