Update reading geometry objects for parallel build

reframe_tests/tests/standard_tests.py

@@ -1,3 +1,7 @@
+from pathlib import Path
+
+from reframe.core.builtins import run_before
+
 from reframe_tests.tests.base_tests import GprMaxBaseTest
 from reframe_tests.tests.mixins import (
     GeometryObjectsReadMixin,
@@ -7,6 +11,7 @@ from reframe_tests.tests.mixins import (
     ReceiverMixin,
     SnapshotMixin,
 )
+from reframe_tests.tests.regression_checks import GeometryObjectMaterialsRegressionCheck
 
 
 class GprMaxRegressionTest(ReceiverMixin, GprMaxBaseTest):
@@ -32,7 +37,23 @@ class GprMaxGeometryObjectsReadTest(GeometryObjectsReadMixin, GprMaxBaseTest):
 class GprMaxGeometryObjectsReadWriteTest(
     GeometryObjectsReadMixin, GeometryObjectsWriteMixin, GprMaxBaseTest
 ):
-    pass
+    @run_before("sanity")
+    def update_material_files(self):
+        checks = [
+            check
+            for check in self.regression_checks
+            if isinstance(check, GeometryObjectMaterialsRegressionCheck)
+        ]
+        for check in checks:
+            for geometry_object in self.geometry_objects_read.values():
+                material_file = Path(self.stagedir, check.output_file)
+                with open(material_file, "r") as f:
+                    lines = f.readlines()
+
+                with open(material_file, "w") as f:
+                    for line in lines:
+                        new_line = line.replace(f"{{{geometry_object}_materials}}", "")
+                        f.write(new_line)
 
 
 class GprMaxGeometryTest(GeometryObjectsWriteMixin, ReceiverMixin, GprMaxBaseTest):