Hardcode exceptions for warnIfMissingRequiredProperties

+ fix syntax errror (missing end) in nwbExportTest

Author: ehennestad

+tests/+unit/nwbExportTest.m

@@ -49,7 +49,8 @@ function testExportTimeseriesWithMissingTimestampsAndStartingTime(testCase)
              nwbFilePath = fullfile(testCase.OutputFolder, 'testfile.nwb');
              testCase.verifyError(@(f, fn) nwbExport(testCase.NwbObject, nwbFilePath), ...
                  'NWB:CustomConstraintUnfulfilled')
-
+        end
+        
         function testExportDependentAttributeWithMissingParentA(testCase)
             testCase.NwbObject.general_source_script_file_name = 'my_test_script.m';
             nwbFilePath = fullfile(testCase.OutputFolder, 'test_part1.nwb');

+types/+untyped/MetaClass.m

@@ -139,6 +139,19 @@ function warnIfPropertyAttributeNotExported(obj, propName, depPropName, fullpath
 
         function displayWarningIfMissingRequiredProps(obj)
             missingRequiredProps = obj.checkRequiredProps();
+
+            % Exception: 'file_create_date' is automatically added by the 
+            % matnwb API on export,  so no need to warn if it is missing.
+            if isa(obj, 'types.core.NWBFile')
+                missingRequiredProps = setdiff(missingRequiredProps, 'file_create_date', 'stable');
+            end
+            
+            % Exception: 'id' of DynamicTable is automatically assigned if not 
+            % specified, so no need to warn if it is missing.
+            if isa(obj, 'types.hdmf_common.DynamicTable')
+                missingRequiredProps = setdiff(missingRequiredProps, 'id', 'stable');
+            end
+
             if ~isempty( missingRequiredProps )
                 warnState = warning('backtrace', 'off');
                 cleanerObj = onCleanup(@(s) warning(warnState));