forked from bartvdbraak/blender
224 lines
4.6 KiB
C++
224 lines
4.6 KiB
C++
/* Apache License, Version 2.0 */
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#include "testing/testing.h"
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#include <string.h>
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extern "C" {
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#include "BLI_stack.h"
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#include "BLI_utildefines.h"
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#include "BLI_array.h"
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};
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#define SIZE 1024
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/* number of items per chunk. use a small value to expose bugs */
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#define STACK_CHUNK_SIZE 8
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/* Ensure block size is set to #STACK_NEW_EX_ARGS */
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#define BLI_stack_new(esize, descr) \
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BLI_stack_new_ex(esize, descr, esize * STACK_CHUNK_SIZE)
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TEST(stack, Empty)
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{
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BLI_Stack *stack;
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stack = BLI_stack_new(sizeof(int), __func__);
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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EXPECT_EQ(BLI_stack_count(stack), 0);
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BLI_stack_free(stack);
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}
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TEST(stack, One)
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{
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BLI_Stack *stack;
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unsigned int in = -1, out = 1;
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stack = BLI_stack_new(sizeof(in), __func__);
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BLI_stack_push(stack, (void *)&in);
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EXPECT_EQ(BLI_stack_is_empty(stack), false);
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EXPECT_EQ(BLI_stack_count(stack), 1);
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BLI_stack_pop(stack, (void *)&out);
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EXPECT_EQ(in, out);
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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EXPECT_EQ(BLI_stack_count(stack), 0);
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BLI_stack_free(stack);
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}
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TEST(stack, Range)
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{
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const int tot = SIZE;
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BLI_Stack *stack;
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int in, out;
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stack = BLI_stack_new(sizeof(in), __func__);
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for (in = 0; in < tot; in++) {
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BLI_stack_push(stack, (void *)&in);
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}
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for (in = tot - 1; in >= 0; in--) {
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EXPECT_EQ(BLI_stack_is_empty(stack), false);
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BLI_stack_pop(stack, (void *)&out);
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EXPECT_EQ(in, out);
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}
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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BLI_stack_free(stack);
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}
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TEST(stack, String)
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{
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const int tot = SIZE;
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int i;
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BLI_Stack *stack;
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char in[] = "hello world!";
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char out[sizeof(in)];
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stack = BLI_stack_new(sizeof(in), __func__);
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for (i = 0; i < tot; i++) {
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*((int *)in) = i;
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BLI_stack_push(stack, (void *)in);
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}
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for (i = tot - 1; i >= 0; i--) {
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EXPECT_EQ(BLI_stack_is_empty(stack), false);
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*((int *)in) = i;
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BLI_stack_pop(stack, (void *)&out);
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EXPECT_STREQ(in, out);
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}
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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BLI_stack_free(stack);
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}
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TEST(stack, Peek)
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{
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const int tot = SIZE;
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int i;
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BLI_Stack *stack;
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const short in[] = {1, 10, 100, 1000};
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stack = BLI_stack_new(sizeof(*in), __func__);
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for (i = 0; i < tot; i++) {
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BLI_stack_push(stack, &in[i % ARRAY_SIZE(in)]);
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}
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for (i = tot - 1; i >= 0; i--, BLI_stack_discard(stack)) {
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short *ret = (short *)BLI_stack_peek(stack);
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EXPECT_EQ(*ret, in[i % ARRAY_SIZE(in)]);
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}
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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BLI_stack_free(stack);
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}
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/* Check that clearing the stack leaves in it a correct state. */
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TEST(stack, Clear)
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{
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const int tot_rerun = 4;
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int rerun;
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/* based on range test */
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int tot = SIZE;
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BLI_Stack *stack;
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int in, out;
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/* use a small chunk size to ensure we test */
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stack = BLI_stack_new(sizeof(in), __func__);
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for (rerun = 0; rerun < tot_rerun; rerun++) {
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for (in = 0; in < tot; in++) {
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BLI_stack_push(stack, (void *)&in);
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}
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BLI_stack_clear(stack);
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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/* and again, this time check its valid */
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for (in = 0; in < tot; in++) {
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BLI_stack_push(stack, (void *)&in);
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}
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for (in = tot - 1; in >= 0; in--) {
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EXPECT_EQ(BLI_stack_is_empty(stack), false);
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BLI_stack_pop(stack, (void *)&out);
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EXPECT_EQ(in, out);
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}
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EXPECT_EQ(BLI_stack_is_empty(stack), true);
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/* without this, we wont test case when mixed free/used */
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tot /= 2;
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}
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BLI_stack_free(stack);
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}
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TEST(stack, Reuse)
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{
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const int sizes[] = {3, 11, 81, 400, 999, 12, 1, 9721, 7, 99, 5, 0};
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int sizes_test[ARRAY_SIZE(sizes)];
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const int *s;
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int out, i;
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int sum, sum_test;
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BLI_Stack *stack;
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stack = BLI_stack_new(sizeof(i), __func__);
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/* add a bunch of numbers, ensure we get same sum out */
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sum = 0;
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for (s = sizes; *s; s++) {
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for (i = *s; i != 0; i--) {
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BLI_stack_push(stack, (void *)&i);
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sum += i;
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}
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}
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sum_test = 0;
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while (!BLI_stack_is_empty(stack)) {
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BLI_stack_pop(stack, (void *)&out);
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sum_test += out;
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}
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EXPECT_EQ(sum, sum_test);
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/* add and remove all except last */
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for (s = sizes; *s; s++) {
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for (i = *s; i >= 0; i--) {
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BLI_stack_push(stack, (void *)&i);
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}
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for (i = *s; i > 0; i--) {
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BLI_stack_pop(stack, (void *)&out);
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}
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}
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i = ARRAY_SIZE(sizes) - 1;
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while (!BLI_stack_is_empty(stack)) {
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i--;
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BLI_stack_pop(stack, (void *)&sizes_test[i]);
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EXPECT_EQ(sizes[i], sizes_test[i]);
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EXPECT_GT(i, -1);
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}
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EXPECT_EQ(i, 0);
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EXPECT_EQ(memcmp(sizes, sizes_test, sizeof(sizes) - sizeof(int)), 0);
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/* finally test BLI_stack_pop_n */
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for (i = ARRAY_SIZE(sizes); i--; ) {
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BLI_stack_push(stack, (void *)&sizes[i]);
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}
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EXPECT_EQ(BLI_stack_count(stack), ARRAY_SIZE(sizes));
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BLI_stack_pop_n(stack, (void *)sizes_test, ARRAY_SIZE(sizes));
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EXPECT_EQ(memcmp(sizes, sizes_test, sizeof(sizes) - sizeof(int)), 0);
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BLI_stack_free(stack);
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}
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