Nils O. Selåsdal
107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
#include <check.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "ucore_read_file.h"
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START_TEST (test_read_file_non_existing_file)
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char *content;
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size_t len;
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int saved_errno;
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content = uc_read_file("non existing file 123765", &len, 1000000000);
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saved_errno = errno;
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fail_if(content != NULL);
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fail_if(saved_errno == 0);
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END_TEST
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START_TEST (test_read_file_simple)
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char *content;
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const char *filename = "test_read_file_simple";
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size_t len;
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ssize_t rc;
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int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0664);
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fail_if(fd == -1);
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rc = write(fd, "hello", 5);
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fail_if(rc != 5, "rc was %ld", (long)rc);
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close(fd);
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content = uc_read_file(filename, &len, 1000000000);
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unlink(filename);
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fail_if(content == NULL);
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fail_if(len != 5);
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fail_if(strlen(content) != 5);
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fail_if(strcmp("hello", content) != 0);
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END_TEST
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START_TEST (test_read_file_greater_than_max)
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char *content;
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const char *filename = "test_read_file_simple";
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size_t len;
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ssize_t rc;
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int saved_errno;
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int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0664);
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fail_if(fd == -1);
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rc = write(fd, "hello", 5);
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fail_if(rc != 5, "rc was %ld", (long)rc);
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close(fd);
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content = uc_read_file(filename, &len, 4);
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saved_errno = errno;
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unlink(filename);
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fail_if(content != NULL);
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fail_if(saved_errno != EMSGSIZE, "was %d", saved_errno);
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END_TEST
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START_TEST (test_read_file_boundary)
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char *content;
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const char *filename = "test_read_file_boundary";
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size_t len;
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ssize_t rc;
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char buf[1030] = "";
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strcpy(&buf[1022], "foobar");
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int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0664);
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fail_if(fd == -1);
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rc = write(fd, buf, sizeof buf);
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fail_if(rc != sizeof buf, "rc was %ld", (long)rc);
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close(fd);
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content = uc_read_file(filename, &len, 1000000000);
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unlink(filename);
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fail_if(content == NULL);
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fail_if(len != sizeof buf);
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fail_if(strcmp("foobar", &content[1022]) != 0);
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free(content);
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END_TEST
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Suite *read_file_suite(void)
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{
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Suite *s = suite_create("read_file");
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TCase *tc = tcase_create("read_file tests");
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tcase_add_test(tc, test_read_file_non_existing_file);
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tcase_add_test(tc, test_read_file_simple);
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tcase_add_test(tc, test_read_file_greater_than_max);
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tcase_add_test(tc, test_read_file_boundary);
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suite_add_tcase(s, tc);
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return s;
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}
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