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Tests for memory copy and write functions

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This commit is contained in:
Thomas Lovén
2017-12-03 23:44:35 +01:00
parent 954696728c
commit b9e9df32f5
2 changed files with 98 additions and 1 deletions
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72
src/kernel/memory/string.tt Normal file
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// vim: ft=c
#include <ttest.h>
#include <string.h>
#include "string.c"
char *lipsum = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus interdum eros at enim tempus sed.";
char dst[100];
BEFORE()
{
for(int i = 0; i < 100; dst[i++] = '\0');
}
TEST(memcpy_copies_data)
{
my_memcpy(dst, lipsum, 100);
ASSERT_EQ_STR(dst, lipsum, 100);
}
TEST(memcpy_doesnt_copy_too_much)
{
my_memcpy(dst, lipsum, 10);
ASSERT_EQ_CHR(dst[10], 0);
}
TEST(memset_sets_data)
{
memset(dst, 0, 10);
my_memset(dst, 'a', 5);
ASSERT_EQ_STR(dst, "aaaaa", 100);
}
// Those test won't pass right now since our memmove implementation is
// incomplete (see string.c)
/*TEST(memmove_moves_data)
{
memcpy(&dst[10], "12345", 5);
my_memmove(dst, &dst[10], 5);
ASSERT_EQ_STR(dst, "12345", 5);
}*/
/*TEST(memmove_handles_overlap)
{
memcpy(&dst[5], "1234567890", 10);
my_memmove(dst, &dst[5], 10);
ASSERT_EQ_STR(dst, "1234567890", 10);
}*/
/*TEST(memmove_handles_overlap_the_other_way)
{
memcpy(dst, "1234567890", 10);
my_memmove(&dst[5], dst, 10);
ASSERT_EQ_STR(&dst[5], "1234567890", 10);
}*/
TEST(memcmp_returns_zero_for_equal_strings)
{
ASSERT_EQ_INT(my_memcmp("1234", "1234", 4), 0);
}
TEST(memcmp_returns_difference_for_unequal_strings)
{
ASSERT_EQ_INT(my_memcmp("1234", "0234", 4), 1);
}
TEST(memcmp_returns_signed_difference_for_unequal_strings)
{
ASSERT_EQ_INT(my_memcmp("1234", "1236", 4), -2);
}
TEST(strlen_counts_correctly)
{
ASSERT_EQ_INT(my_strlen("12345"), 5);
}