make test_transfer much more likely to succeed

test/main.cpp

@@ -128,6 +128,7 @@ int main()
 #else
 	chdir(dir);
 #endif
+	fprintf(stderr, "cwd = \"%s\"\n", test_dir.c_str());
 
 #ifndef BOOST_NO_EXCEPTIONS
 	try

test/test_transfer.cpp

@@ -309,6 +309,13 @@ void test_transfer(int proxy_type, bool test_disk_full = false, bool test_allowe
 		{
 			test_disk_full = false;
 			((test_storage*)tor2.get_storage_impl())->m_limit = 16 * 1024 * 1024;
+
+			// if we reset the upload mode too soon, there may be more disk
+			// jobs failing right after, putting us back in upload mode. So,
+			// give the disk some time to fail all disk jobs before resetting
+			// upload mode to false
+			test_sleep(500);
+
 			tor2.set_upload_mode(false);
 			TEST_CHECK(tor2.status().is_finished == false);
 			TEST_EQUAL(peer_disconnects, 2);