diff --git a/tests/unit/kernel/cellTypesTest.cc b/tests/unit/kernel/cellTypesTest.cc
index 1df8ba3ad..aec8b05fc 100644
--- a/tests/unit/kernel/cellTypesTest.cc
+++ b/tests/unit/kernel/cellTypesTest.cc
@@ -14,24 +14,30 @@ TEST(CellTypesTest, basic)
 	log_files.push_back(stdout);
 	CellTypes older;
 	NewCellTypes newer;
-	log("setup nullptr\n");
 	older.setup(nullptr);
 	newer.setup(nullptr);
-	log("setup type bleh\n");
 	older.setup_type(ID(bleh), {ID::G}, {ID::H, ID::I}, false, true);
 	newer.setup_type(ID(bleh), {ID::G}, {ID::H, ID::I}, false, true);
 
 	EXPECT_EQ(older.cell_known(ID(aaaaa)), newer.cell_known(ID(aaaaa)));
 	EXPECT_EQ(older.cell_known(ID($and)), newer.cell_known(ID($and)));
+	auto check_port = [&](auto type, auto port) {
+		EXPECT_EQ(older.cell_port_dir(type, port), newer.cell_port_dir(type, port));
+		EXPECT_EQ(older.cell_input(type, port), newer.cell_input(type, port));
+		EXPECT_EQ(older.cell_output(type, port), newer.cell_output(type, port));
+	};
 	for (size_t i = 0; i < static_cast<size_t>(RTLIL::StaticId::STATIC_ID_END); i++) {
 		IdString type;
 		type.index_ = i;
-		if (older.cell_known(type) != newer.cell_known(type))
-			std::cout << i << " " << type.str() << "\n";
 		EXPECT_EQ(older.cell_known(type), newer.cell_known(type));
+		if (older.cell_evaluable(type) != newer.cell_evaluable(type))
+			std::cout << type.str() << "\n";
+		EXPECT_EQ(older.cell_evaluable(type), newer.cell_evaluable(type));
+		for (auto port : StaticCellTypes::builder.cells.data()->inputs.ports)
+			check_port(type, port);
+		for (auto port : StaticCellTypes::builder.cells.data()->outputs.ports)
+			check_port(type, port);
 
-		if (RTLIL::builtin_ff_cell_types().count(type) != StaticCellTypes::categories.is_ff(type))
-			std::cout << i << " " << type.str() << "\n";
 		EXPECT_EQ(RTLIL::builtin_ff_cell_types().count(type), StaticCellTypes::categories.is_ff(type));
 	}
 	yosys_shutdown();