New IFC to Brick class mapping utility

src/ifcopenshell-python/test/util/test_brick.py

@@ -0,0 +1,11 @@
+import pytest
+import test.bootstrap
+import ifcopenshell.util.brick as subject
+
+
+class TestGetBrickTypeIFC4(test.bootstrap.IFC4):
+    def test_run(self):
+        element = self.file.createIfcAirTerminalBox()
+        assert subject.get_brick_type(element) == "TerminalUnit"
+        element.PredefinedType = "CONSTANTFLOW"
+        assert subject.get_brick_type(element) == "CAV"