56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
#include "testcase.h"
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#include <malloc.h>
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#include <string.h>
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#include <FreeRTOS.h>
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DEFINE_SOLO_TESTCASE(02_heap_simple)
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DEFINE_SOLO_TESTCASE(02_heap_full)
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/* Simple heap accounting tests */
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static void a_02_heap_simple()
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{
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struct mallinfo info = mallinfo();
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printf("'arena' allocation size %d bytes\n", info.arena);
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/* This is really a sanity check, if the "arena" size shrinks then
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this is a good thing and we can update the test. If it grows
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then we can also update the test, but we need a good reason. */
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TEST_ASSERT_INT_WITHIN_MESSAGE(1000, 15000, info.arena, "Initial allocated heap should be approximately 15kB. SEE COMMENT.");
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uint32_t freeheap = xPortGetFreeHeapSize();
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printf("xPortGetFreeHeapSize = %d bytes\n", freeheap);
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TEST_ASSERT_TRUE_MESSAGE(freeheap > 20000, "Should be at least 20kB free.");
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uint8_t *buf = malloc(8192);
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/* <-- have to do something with buf or gcc helpfully optimises it out! */
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memset(buf, 0xEE, 8192);
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uint32_t after = xPortGetFreeHeapSize();
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struct mallinfo after_info = mallinfo();
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printf("after arena size = %d bytes\n", after_info.arena);
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printf("after xPortGetFreeHeapSize = %d bytes\n", after);
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TEST_ASSERT_UINT32_WITHIN_MESSAGE(100, info.arena+8192, after_info.arena, "Allocated heap 'after' size should be 8kB more than before");
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TEST_ASSERT_UINT32_WITHIN_MESSAGE(100, freeheap-8192, after, "Free heap size should be 8kB less than before");
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free(buf);
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after = xPortGetFreeHeapSize();
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printf("after freeing xPortGetFreeHeapSize = %d bytes\n", after);
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TEST_ASSERT_UINT32_WITHIN_MESSAGE(100, freeheap, after, "Free heap size after freeing buffer should be close to initial");
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TEST_PASS();
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}
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/* Ensure malloc behaves when out of memory */
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static void a_02_heap_full()
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{
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void *x = malloc(65536);
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TEST_ASSERT_NULL_MESSAGE(x, "Allocating 64kB should fail and return null");
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void *y = malloc(32768);
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TEST_ASSERT_NOT_NULL_MESSAGE(y, "Allocating 32kB should succeed");
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void *z = malloc(32768);
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TEST_ASSERT_NULL_MESSAGE(z, "Allocating second 32kB should fail");
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free(y);
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z = malloc(32768);
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TEST_ASSERT_NOT_NULL_MESSAGE(z, "Allocating 32kB should succeed after first block freed");
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TEST_PASS();
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}
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