From 4a0e2c447eeac47eaa497a2db6925590b3cec3bd Mon Sep 17 00:00:00 2001

From: Jan Synacek <jsynacek@redhat.com>

Date: Thu, 23 Nov 2017 11:42:05 +0100

Subject: [PATCH] test-fileio: also test read_line() with actual files

Just in case the real FILE and the one from fmemopen weren't exactly

the same.

(cherry picked from commit 2c9de13912350f5887ccccdae9e1707512208053)

Resolves: #1503106

---

 src/test/test-fileio.c | 63 ++++++++++++++++++++++++++++++++++--------

 1 file changed, 51 insertions(+), 12 deletions(-)

diff --git a/src/test/test-fileio.c b/src/test/test-fileio.c

index fc5969322..791bfc97b 100644

--- a/src/test/test-fileio.c

+++ b/src/test/test-fileio.c

@@ -392,20 +392,17 @@ static void test_load_env_file_pairs(void) {

         unlink(fn);

 }

-static void test_read_line(void) {

-        _cleanup_fclose_ FILE *f = NULL;

-        _cleanup_free_ char *line = NULL;

-        char buffer[] =

-                "Some test data\n"

-                "With newlines, and a NUL byte\0"

-                "\n"

-                "an empty line\n"

-                "an ignored line\n"

-                "and a very long line that is supposed to be truncated, because it is so long\n";

+static const char buffer[] =

+        "Some test data\n"

+        "With newlines, and a NUL byte\0"

+        "\n"

+        "an empty line\n"

+        "an ignored line\n"

+        "and a very long line that is supposed to be truncated, because it is so long\n";

-        f = fmemopen(buffer, sizeof(buffer), "re");

-        assert_se(f);

+static void test_read_line_one_file(FILE *f) {

+        _cleanup_free_ char *line = NULL;

         assert_se(read_line(f, (size_t) -1, &line) == 15 && streq(line, "Some test data"));

         line = mfree(line);

@@ -435,6 +432,46 @@ static void test_read_line(void) {

         assert_se(read_line(f, 1024, &line) == 0 && streq(line, ""));

 }

+static void test_read_line(void) {

+        _cleanup_fclose_ FILE *f = NULL;

+        _cleanup_free_ char *line = NULL;

+

+        f = fmemopen((void*) buffer, sizeof(buffer), "re");

+        assert_se(f);

+

+        test_read_line_one_file(f);

+}

+

+static void test_read_line2(void) {

+        char name[] = "/tmp/test-fileio.XXXXXX";

+        int fd;

+        _cleanup_fclose_ FILE *f = NULL;

+

+        fd = mkostemp_safe(name, O_CLOEXEC);

+        assert_se(fd >= 0);

+        assert_se((size_t) write(fd, buffer, sizeof(buffer)) == sizeof(buffer));

+

+        assert_se(lseek(fd, 0, SEEK_SET) == 0);

+        assert_se(f = fdopen(fd, "r"));

+

+        test_read_line_one_file(f);

+}

+

+static void test_read_line3(void) {

+        _cleanup_fclose_ FILE *f = NULL;

+        _cleanup_free_ char *line = NULL;

+        int r;

+

+        f = fopen("/proc/cmdline", "re");

+        if (!f && IN_SET(errno, ENOENT, EPERM))

+                return;

+        assert_se(f);

+

+        r = read_line(f, LINE_MAX, &line);

+        assert_se((size_t) r == strlen(line) + 1);

+        assert_se(read_line(f, LINE_MAX, NULL) == 0);

+}

+

 int main(int argc, char *argv[]) {

         log_parse_environment();

         log_open();

@@ -449,6 +486,8 @@ int main(int argc, char *argv[]) {

         test_write_string_file_no_create();

         test_load_env_file_pairs();

         test_read_line();

+        test_read_line2();

+        test_read_line3();

         return 0;

 }