mirror of
https://github.com/Genymobile/scrcpy
synced 2024-11-17 03:25:38 +00:00
c070723bc8
Adapt vlc_vector [1], that I initially wrote while implementing the VLC
playlist [2].
Change the implementation to use "statement expressions" [3], which are
forbidden in VLC because "non-standard", but:
- they are supported by gcc and clang;
- they are already used in the scrcpy codebase;
- they avoid implementation hacks (VLC_VECTOR_FAILFLAG_);
- they allow a better API (sc_vector_index_of() may return the result
without an output parameter).
PR #3035 <https://github.com/Genymobile/scrcpy/pull/3035>
[1]: 0857947aba/include/vlc_vector.h
[2]: https://blog.rom1v.com/2019/05/a-new-core-playlist-for-vlc-4
[3]: https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
422 lines
9.7 KiB
C
422 lines
9.7 KiB
C
#include "common.h"
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#include <assert.h>
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#include "util/vector.h"
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static void test_vector_insert_remove(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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ok = sc_vector_push(&vec, 42);
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assert(ok);
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assert(vec.data[0] == 42);
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assert(vec.size == 1);
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ok = sc_vector_push(&vec, 37);
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assert(ok);
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assert(vec.size == 2);
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assert(vec.data[0] == 42);
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assert(vec.data[1] == 37);
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ok = sc_vector_insert(&vec, 1, 100);
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assert(ok);
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assert(vec.size == 3);
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assert(vec.data[0] == 42);
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assert(vec.data[1] == 100);
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assert(vec.data[2] == 37);
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ok = sc_vector_push(&vec, 77);
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assert(ok);
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assert(vec.size == 4);
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assert(vec.data[0] == 42);
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assert(vec.data[1] == 100);
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assert(vec.data[2] == 37);
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assert(vec.data[3] == 77);
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sc_vector_remove(&vec, 1);
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assert(vec.size == 3);
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assert(vec.data[0] == 42);
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assert(vec.data[1] == 37);
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assert(vec.data[2] == 77);
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sc_vector_clear(&vec);
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assert(vec.size == 0);
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sc_vector_destroy(&vec);
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}
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static void test_vector_push_array(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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ok = sc_vector_push(&vec, 3); assert(ok);
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ok = sc_vector_push(&vec, 14); assert(ok);
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ok = sc_vector_push(&vec, 15); assert(ok);
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ok = sc_vector_push(&vec, 92); assert(ok);
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ok = sc_vector_push(&vec, 65); assert(ok);
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assert(vec.size == 5);
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int items[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
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ok = sc_vector_push_all(&vec, items, 8);
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assert(ok);
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assert(vec.size == 13);
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assert(vec.data[0] == 3);
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assert(vec.data[1] == 14);
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assert(vec.data[2] == 15);
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assert(vec.data[3] == 92);
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assert(vec.data[4] == 65);
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assert(vec.data[5] == 1);
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assert(vec.data[6] == 2);
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assert(vec.data[7] == 3);
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assert(vec.data[8] == 4);
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assert(vec.data[9] == 5);
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assert(vec.data[10] == 6);
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assert(vec.data[11] == 7);
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assert(vec.data[12] == 8);
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sc_vector_destroy(&vec);
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}
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static void test_vector_insert_array(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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ok = sc_vector_push(&vec, 3); assert(ok);
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ok = sc_vector_push(&vec, 14); assert(ok);
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ok = sc_vector_push(&vec, 15); assert(ok);
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ok = sc_vector_push(&vec, 92); assert(ok);
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ok = sc_vector_push(&vec, 65); assert(ok);
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assert(vec.size == 5);
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int items[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
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ok = sc_vector_insert_all(&vec, 3, items, 8);
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assert(ok);
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assert(vec.size == 13);
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assert(vec.data[0] == 3);
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assert(vec.data[1] == 14);
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assert(vec.data[2] == 15);
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assert(vec.data[3] == 1);
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assert(vec.data[4] == 2);
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assert(vec.data[5] == 3);
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assert(vec.data[6] == 4);
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assert(vec.data[7] == 5);
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assert(vec.data[8] == 6);
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assert(vec.data[9] == 7);
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assert(vec.data[10] == 8);
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assert(vec.data[11] == 92);
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assert(vec.data[12] == 65);
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sc_vector_destroy(&vec);
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}
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static void test_vector_remove_slice(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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for (int i = 0; i < 100; ++i)
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{
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ok = sc_vector_push(&vec, i);
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assert(ok);
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}
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assert(vec.size == 100);
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sc_vector_remove_slice(&vec, 32, 60);
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assert(vec.size == 40);
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assert(vec.data[31] == 31);
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assert(vec.data[32] == 92);
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sc_vector_destroy(&vec);
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}
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static void test_vector_swap_remove(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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ok = sc_vector_push(&vec, 3); assert(ok);
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ok = sc_vector_push(&vec, 14); assert(ok);
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ok = sc_vector_push(&vec, 15); assert(ok);
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ok = sc_vector_push(&vec, 92); assert(ok);
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ok = sc_vector_push(&vec, 65); assert(ok);
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assert(vec.size == 5);
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sc_vector_swap_remove(&vec, 1);
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assert(vec.size == 4);
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assert(vec.data[0] == 3);
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assert(vec.data[1] == 65);
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assert(vec.data[2] == 15);
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assert(vec.data[3] == 92);
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sc_vector_destroy(&vec);
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}
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static void test_vector_index_of(void) {
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struct SC_VECTOR(int) vec;
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sc_vector_init(&vec);
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bool ok;
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for (int i = 0; i < 10; ++i)
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{
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ok = sc_vector_push(&vec, i);
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assert(ok);
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}
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ssize_t idx;
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idx = sc_vector_index_of(&vec, 0);
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assert(idx == 0);
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idx = sc_vector_index_of(&vec, 1);
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assert(idx == 1);
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idx = sc_vector_index_of(&vec, 4);
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assert(idx == 4);
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idx = sc_vector_index_of(&vec, 9);
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assert(idx == 9);
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idx = sc_vector_index_of(&vec, 12);
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assert(idx == -1);
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sc_vector_destroy(&vec);
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}
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static void test_vector_grow() {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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for (int i = 0; i < 50; ++i)
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{
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ok = sc_vector_push(&vec, i); /* append */
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assert(ok);
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}
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assert(vec.cap >= 50);
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assert(vec.size == 50);
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for (int i = 0; i < 25; ++i)
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{
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ok = sc_vector_insert(&vec, 20, i); /* insert in the middle */
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assert(ok);
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}
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assert(vec.cap >= 75);
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assert(vec.size == 75);
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for (int i = 0; i < 25; ++i)
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{
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ok = sc_vector_insert(&vec, 0, i); /* prepend */
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assert(ok);
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}
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assert(vec.cap >= 100);
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assert(vec.size == 100);
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for (int i = 0; i < 50; ++i)
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sc_vector_remove(&vec, 20); /* remove from the middle */
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assert(vec.cap >= 50);
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assert(vec.size == 50);
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for (int i = 0; i < 25; ++i)
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sc_vector_remove(&vec, 0); /* remove from the head */
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assert(vec.cap >= 25);
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assert(vec.size == 25);
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for (int i = 24; i >=0; --i)
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sc_vector_remove(&vec, i); /* remove from the tail */
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assert(vec.size == 0);
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sc_vector_destroy(&vec);
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}
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static void test_vector_exp_growth(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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size_t oldcap = vec.cap;
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int realloc_count = 0;
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bool ok;
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for (int i = 0; i < 10000; ++i)
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{
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ok = sc_vector_push(&vec, i);
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assert(ok);
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if (vec.cap != oldcap)
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{
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realloc_count++;
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oldcap = vec.cap;
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}
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}
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/* Test speciically for an expected growth factor of 1.5. In practice, the
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* result is even lower (19) due to the first alloc of size 10 */
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assert(realloc_count <= 23); /* ln(10000) / ln(1.5) ~= 23 */
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realloc_count = 0;
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for (int i = 9999; i >= 0; --i)
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{
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sc_vector_remove(&vec, i);
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if (vec.cap != oldcap)
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{
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realloc_count++;
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oldcap = vec.cap;
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}
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}
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assert(realloc_count <= 23); /* same expectations for removals */
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assert(realloc_count > 0); /* sc_vector_remove() must autoshrink */
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sc_vector_destroy(&vec);
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}
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static void test_vector_reserve(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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ok = sc_vector_reserve(&vec, 800);
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assert(ok);
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assert(vec.cap >= 800);
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assert(vec.size == 0);
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size_t initial_cap = vec.cap;
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for (int i = 0; i < 800; ++i)
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{
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ok = sc_vector_push(&vec, i);
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assert(ok);
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assert(vec.cap == initial_cap); /* no realloc */
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}
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sc_vector_destroy(&vec);
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}
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static void test_vector_shrink_to_fit(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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bool ok;
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ok = sc_vector_reserve(&vec, 800);
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assert(ok);
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for (int i = 0; i < 250; ++i)
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{
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ok = sc_vector_push(&vec, i);
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assert(ok);
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}
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assert(vec.cap >= 800);
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assert(vec.size == 250);
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sc_vector_shrink_to_fit(&vec);
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assert(vec.cap == 250);
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assert(vec.size == 250);
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sc_vector_destroy(&vec);
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}
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static void test_vector_move(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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for (int i = 0; i < 7; ++i)
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{
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bool ok = sc_vector_push(&vec, i);
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assert(ok);
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}
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/* move item at 1 so that its new position is 4 */
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sc_vector_move(&vec, 1, 4);
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assert(vec.size == 7);
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assert(vec.data[0] == 0);
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assert(vec.data[1] == 2);
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assert(vec.data[2] == 3);
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assert(vec.data[3] == 4);
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assert(vec.data[4] == 1);
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assert(vec.data[5] == 5);
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assert(vec.data[6] == 6);
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sc_vector_destroy(&vec);
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}
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static void test_vector_move_slice_forward(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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for (int i = 0; i < 10; ++i)
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{
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bool ok = sc_vector_push(&vec, i);
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assert(ok);
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}
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/* move slice {2, 3, 4, 5} so that its new position is 5 */
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sc_vector_move_slice(&vec, 2, 4, 5);
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assert(vec.size == 10);
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assert(vec.data[0] == 0);
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assert(vec.data[1] == 1);
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assert(vec.data[2] == 6);
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assert(vec.data[3] == 7);
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assert(vec.data[4] == 8);
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assert(vec.data[5] == 2);
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assert(vec.data[6] == 3);
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assert(vec.data[7] == 4);
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assert(vec.data[8] == 5);
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assert(vec.data[9] == 9);
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sc_vector_destroy(&vec);
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}
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static void test_vector_move_slice_backward(void) {
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struct SC_VECTOR(int) vec = SC_VECTOR_INITIALIZER;
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for (int i = 0; i < 10; ++i)
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{
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bool ok = sc_vector_push(&vec, i);
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assert(ok);
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}
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/* move slice {5, 6, 7} so that its new position is 2 */
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sc_vector_move_slice(&vec, 5, 3, 2);
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assert(vec.size == 10);
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assert(vec.data[0] == 0);
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assert(vec.data[1] == 1);
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assert(vec.data[2] == 5);
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assert(vec.data[3] == 6);
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assert(vec.data[4] == 7);
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assert(vec.data[5] == 2);
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assert(vec.data[6] == 3);
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assert(vec.data[7] == 4);
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assert(vec.data[8] == 8);
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assert(vec.data[9] == 9);
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sc_vector_destroy(&vec);
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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_vector_insert_remove();
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test_vector_push_array();
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test_vector_insert_array();
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test_vector_remove_slice();
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test_vector_swap_remove();
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test_vector_move();
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test_vector_move_slice_forward();
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test_vector_move_slice_backward();
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test_vector_index_of();
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test_vector_grow();
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test_vector_exp_growth();
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test_vector_reserve();
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test_vector_shrink_to_fit();
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return 0;
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}
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