Add a duplicate media unit test

src/Label.cpp

@@ -78,8 +78,6 @@ bool Label::createTable(sqlite3* dbConnection)
     return SqliteTools::executeRequest( dbConnection, req.c_str() );
 }
 
-
-
 const std::string&policy::LabelCachePolicy::key( const std::shared_ptr<ILabel> self )
 {
     return self->name();

test/Files.cpp

@@ -67,3 +67,15 @@ TEST_F( Files, Delete )
     f2 = ml->file( "/dev/loutre" );
     ASSERT_EQ( f2, nullptr );
 }
+
+TEST_F( Files, Duplicate )
+{
+    auto f = ml->addFile( "/dev/moulaf" );
+    auto f2 = ml->addFile( "/dev/moulaf" );
+
+    ASSERT_NE( f, nullptr );
+    ASSERT_EQ( f2, nullptr );
+
+    f2 = ml->file( "/dev/moulaf" );
+    ASSERT_EQ( f, f2 );
+}