93 lines
1.7 KiB
C++
Executable File
93 lines
1.7 KiB
C++
Executable File
#include "precompiled.h"
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#include "adts.h"
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#include <deque>
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//-----------------------------------------------------------------------------
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// built-in self test
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//-----------------------------------------------------------------------------
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#if SELF_TEST_ENABLED
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namespace test {
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static void test_ringbuf()
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{
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const size_t N = 49; // RingBuf capacity
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const size_t S = 100; // number of test items
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// insert and remove immediately
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{
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RingBuf<int, N> buf;
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for(int i = 1; i < S; i++)
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{
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buf.push_back(i);
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TEST(buf.front() == i);
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buf.pop_front();
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}
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TEST(buf.size() == 0 && buf.empty());
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}
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// fill buffer and overwrite old items
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{
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RingBuf<int, N> buf;
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for(int i = 1; i < S; i++)
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buf.push_back(i);
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TEST(buf.size() == N);
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int first = buf.front();
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TEST(first == (int)(S-1 -N +1));
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for(size_t i = 0; i < N; i++)
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{
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TEST(buf.front() == first);
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first++;
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buf.pop_front();
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}
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TEST(buf.size() == 0 && buf.empty());
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}
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// randomized insert/remove; must behave as does std::deque
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{
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srand(1);
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RingBuf<int, N> buf;
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std::deque<int> deq;
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for(uint rep = 0; rep < 1000; rep++)
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{
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uint rnd_op = rand(0, 10);
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// 70% - insert
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if(rnd_op >= 3)
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{
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int item = rand();
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buf.push_back(item);
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deq.push_back(item);
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int excess_items = (int)deq.size() - N;
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if(excess_items > 0)
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{
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for(int i = 0; i < excess_items; i++)
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{
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deq.pop_front();
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}
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}
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}
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// 30% - pop front (only if not empty)
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else if(!deq.empty())
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{
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buf.pop_front();
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deq.pop_front();
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}
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}
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TEST(buf.size() == deq.size());
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RingBuf<int, N>::iterator begin = buf.begin(), end = buf.end();
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TEST(equal(begin, end, deq.begin()));
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}
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}
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static void self_test()
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{
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test_ringbuf();
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}
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SELF_TEST_RUN;
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} // namespace test
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#endif // #if SELF_TEST_ENABLED
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