3 files changed, 40 insertions, 2 deletions
diff --git a/netfs/fuse/fuseMappersImpl.cpp b/netfs/fuse/fuseMappersImpl.cpp
index 87266b1..d22f3a4 100644
--- a/netfs/fuse/fuseMappersImpl.cpp
+++ b/netfs/fuse/fuseMappersImpl.cpp
@@ -2,6 +2,9 @@
 #include <entCache.h>
 
 namespace NetFS::Client {
+	constexpr int MASK_EVERYTHING = ~0;
+	static_assert(MASK_EVERYTHING == static_cast<int>(0xFFFFFFFF));
+
 	HideUnknownMapperImpl::HideUnknownMapperImpl() : HideUnknownMapperImpl(std::make_shared<UserEntCache>()) { }
 
 	HideUnknownMapperImpl::HideUnknownMapperImpl(EntryResolverPtr<User> u) :
@@ -20,7 +23,7 @@ namespace NetFS::Client {
 		auto u = users->getEntry(un);
 		auto g = groups->getEntry(gn);
 		if (!u || !g) {
-			return {0, 0, 0xFFFFFFF};
+			return {0, 0, MASK_EVERYTHING};
 		}
 		return {static_cast<int>(u->id), static_cast<int>(g->id), 0};
 	}
diff --git a/netfs/fuse/fuseMappersImpl.h b/netfs/fuse/fuseMappersImpl.h
index b8e87f4..a0b1eb3 100644
--- a/netfs/fuse/fuseMappersImpl.h
+++ b/netfs/fuse/fuseMappersImpl.h
@@ -4,10 +4,11 @@
 #include "entries.h"
 #include "entryResolver.h"
 #include <fuseMappers.h>
+#include <visibility.h>
 
 namespace NetFS {
 	namespace Client {
-		class HideUnknownMapperImpl : public HideUnknownMapper {
+		class DLL_PUBLIC HideUnknownMapperImpl : public HideUnknownMapper {
 		public:
 			HideUnknownMapperImpl();
 			HideUnknownMapperImpl(EntryResolverPtr<User> u);
diff --git a/netfs/unittests/testLib.cpp b/netfs/unittests/testLib.cpp
index d46b072..29167c4 100644
--- a/netfs/unittests/testLib.cpp
+++ b/netfs/unittests/testLib.cpp
@@ -3,6 +3,7 @@
 #include <boost/test/unit_test.hpp>
 #include <defaultMapper.h>
 #include <entCache.impl.h>
+#include <fuseMappersImpl.h>
 #include <lockHelpers.h>
 
 class TestEntCache : public EntCache<User> {
@@ -121,3 +122,36 @@ BOOST_AUTO_TEST_CASE(bad_mapfilesystem)
 }
 
 BOOST_AUTO_TEST_SUITE_END();
+
+BOOST_FIXTURE_TEST_SUITE(hm, NetFS::Client::HideUnknownMapperImpl);
+
+BOOST_AUTO_TEST_CASE(good_maptransport)
+{
+	auto fs = mapTransport("root", "root");
+	BOOST_CHECK_EQUAL(0, fs.uid);
+	BOOST_CHECK_EQUAL(0, fs.gid);
+	BOOST_CHECK_EQUAL(0, fs.mask);
+}
+
+BOOST_AUTO_TEST_CASE(good_mapfs)
+{
+	auto tn = mapFileSystem(0, 0);
+	BOOST_CHECK_EQUAL("root", tn.username);
+	BOOST_CHECK_EQUAL("root", tn.groupname);
+}
+
+BOOST_AUTO_TEST_CASE(bad_maptransport)
+{
+	BOOST_CHECK_EQUAL(mapTransport("root", "").mask, ~0);
+	BOOST_CHECK_EQUAL(mapTransport("", "root").mask, ~0);
+	BOOST_CHECK_EQUAL(mapTransport("", "").mask, ~0);
+}
+
+BOOST_AUTO_TEST_CASE(bad_mapfilesystem)
+{
+	BOOST_REQUIRE_THROW(mapFileSystem(0, -1), NetFS::SystemError);
+	BOOST_REQUIRE_THROW(mapFileSystem(-1, 0), NetFS::SystemError);
+	BOOST_REQUIRE_THROW(mapFileSystem(-1, -1), NetFS::SystemError);
+}
+
+BOOST_AUTO_TEST_SUITE_END();