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-rw-r--r--src/test/test-hostname-setup.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/test/test-hostname-setup.c b/src/test/test-hostname-setup.c
new file mode 100644
index 0000000..241b197
--- /dev/null
+++ b/src/test/test-hostname-setup.c
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "fileio.h"
+#include "hostname-setup.h"
+#include "string-util.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+
+TEST(read_etc_hostname) {
+ char path[] = "/tmp/hostname.XXXXXX";
+ char *hostname;
+ int fd;
+
+ fd = mkostemp_safe(path);
+ assert_se(fd > 0);
+ close(fd);
+
+ /* simple hostname */
+ assert_se(write_string_file(path, "foo", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(read_etc_hostname(path, &hostname) == 0);
+ assert_se(streq(hostname, "foo"));
+ hostname = mfree(hostname);
+
+ /* with comment */
+ assert_se(write_string_file(path, "# comment\nfoo", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(read_etc_hostname(path, &hostname) == 0);
+ assert_se(hostname);
+ assert_se(streq(hostname, "foo"));
+ hostname = mfree(hostname);
+
+ /* with comment and extra whitespace */
+ assert_se(write_string_file(path, "# comment\n\n foo ", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(read_etc_hostname(path, &hostname) == 0);
+ assert_se(hostname);
+ assert_se(streq(hostname, "foo"));
+ hostname = mfree(hostname);
+
+ /* cleans up name */
+ assert_se(write_string_file(path, "!foo/bar.com", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(read_etc_hostname(path, &hostname) == 0);
+ assert_se(hostname);
+ assert_se(streq(hostname, "foobar.com"));
+ hostname = mfree(hostname);
+
+ /* no value set */
+ hostname = (char*) 0x1234;
+ assert_se(write_string_file(path, "# nothing here\n", WRITE_STRING_FILE_CREATE) == 0);
+ assert_se(read_etc_hostname(path, &hostname) == -ENOENT);
+ assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
+
+ /* nonexisting file */
+ assert_se(read_etc_hostname("/non/existing", &hostname) == -ENOENT);
+ assert_se(hostname == (char*) 0x1234); /* does not touch argument on error */
+
+ unlink(path);
+}
+
+TEST(hostname_setup) {
+ hostname_setup(false);
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);