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https://github.com/Genymobile/scrcpy
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2f03141e9f
The clock rolling sum is not trivial. Test it.
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
#include "common.h"
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#include <assert.h>
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#include "clock.h"
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void test_small_rolling_sum(void) {
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struct sc_clock clock;
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sc_clock_init(&clock);
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assert(clock.count == 0);
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assert(clock.left_sum.system == 0);
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assert(clock.left_sum.stream == 0);
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assert(clock.right_sum.system == 0);
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assert(clock.right_sum.stream == 0);
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sc_clock_update(&clock, 2, 3);
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assert(clock.count == 1);
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assert(clock.left_sum.system == 0);
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assert(clock.left_sum.stream == 0);
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assert(clock.right_sum.system == 2);
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assert(clock.right_sum.stream == 3);
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sc_clock_update(&clock, 10, 20);
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assert(clock.count == 2);
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assert(clock.left_sum.system == 2);
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assert(clock.left_sum.stream == 3);
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assert(clock.right_sum.system == 10);
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assert(clock.right_sum.stream == 20);
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sc_clock_update(&clock, 40, 80);
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assert(clock.count == 3);
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assert(clock.left_sum.system == 2);
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assert(clock.left_sum.stream == 3);
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assert(clock.right_sum.system == 50);
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assert(clock.right_sum.stream == 100);
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sc_clock_update(&clock, 400, 800);
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assert(clock.count == 4);
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assert(clock.left_sum.system == 12);
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assert(clock.left_sum.stream == 23);
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assert(clock.right_sum.system == 440);
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assert(clock.right_sum.stream == 880);
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}
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void test_large_rolling_sum(void) {
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const unsigned half_range = SC_CLOCK_RANGE / 2;
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struct sc_clock clock1;
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sc_clock_init(&clock1);
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for (unsigned i = 0; i < 5 * half_range; ++i) {
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sc_clock_update(&clock1, i, 2 * i + 1);
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}
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struct sc_clock clock2;
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sc_clock_init(&clock2);
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for (unsigned i = 3 * half_range; i < 5 * half_range; ++i) {
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sc_clock_update(&clock2, i, 2 * i + 1);
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}
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assert(clock1.count == SC_CLOCK_RANGE);
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assert(clock2.count == SC_CLOCK_RANGE);
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// The values before the last SC_CLOCK_RANGE points in clock1 should have
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// no impact
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assert(clock1.left_sum.system == clock2.left_sum.system);
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assert(clock1.left_sum.stream == clock2.left_sum.stream);
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assert(clock1.right_sum.system == clock2.right_sum.system);
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assert(clock1.right_sum.stream == clock2.right_sum.stream);
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}
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int main(int argc, char *argv[]) {
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(void) argc;
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(void) argv;
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test_small_rolling_sum();
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test_large_rolling_sum();
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return 0;
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};
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