Fix tests on OpenBSD

There appears to be some interaction with test_pathconf_limited and
another one when they are run in parallel, causing it to return ENOENT
so the path has been changed from . to /.

Author: wezm

nix-test/src/const.c

@@ -209,6 +209,31 @@ get_int_const(const char* err) {
     GET_CONST(ECANCELED);
 #endif
 
+#if defined(__OpenBSD__)
+    GET_CONST(EAUTH);
+    GET_CONST(EBADRPC);
+    GET_CONST(ECANCELED);
+    GET_CONST(EDQUOT);
+    GET_CONST(EFTYPE);
+    GET_CONST(EILSEQ);
+    GET_CONST(EIPSEC);
+    GET_CONST(EMEDIUMTYPE);
+    GET_CONST(ENEEDAUTH);
+    GET_CONST(ENOATTR);
+    GET_CONST(ENOMEDIUM);
+    GET_CONST(ENOTSUP);
+    GET_CONST(EOPNOTSUPP);
+    GET_CONST(EOVERFLOW);
+    GET_CONST(EPROCLIM);
+    GET_CONST(EPROCUNAVAIL);
+    GET_CONST(EPROGMISMATCH);
+    GET_CONST(EPROGUNAVAIL);
+    GET_CONST(EREMOTE);
+    GET_CONST(ERPCMISMATCH);
+    GET_CONST(ESTALE);
+    GET_CONST(EUSERS);
+#endif
+
 #ifdef DARWIN
     GET_CONST(EPWROFF);
     GET_CONST(EDEVERR);

src/sys/event.rs

@@ -339,7 +339,7 @@ fn test_struct_kevent() {
     assert!(expected.filter == actual.filter() as type_of_event_filter);
     assert!(expected.flags == actual.flags().bits());
     assert!(expected.fflags == actual.fflags().bits());
-    assert!(expected.data == actual.data());
+    assert!(expected.data == actual.data() as type_of_data);
     assert!(expected.udata == actual.udata() as type_of_udata);
     assert!(mem::size_of::<libc::kevent>() == mem::size_of::<KEvent>());
 }

test/test_unistd.rs

@@ -244,7 +244,7 @@ fn test_fpathconf_limited() {
 #[test]
 fn test_pathconf_limited() {
     // AFAIK, PATH_MAX is limited on all platforms, so it makes a good test
-    let path_max = pathconf(".", PathconfVar::PATH_MAX);
+    let path_max = pathconf("/", PathconfVar::PATH_MAX);
     assert!(path_max.expect("pathconf failed").expect("PATH_MAX is unlimited") > 0);
 }