Add method overload for getIdFieldValues to omit null values

sfdx-source/apex-extensions/main/default/classes/domains/fflib_SObjects2.cls

@@ -657,6 +657,26 @@ public virtual class fflib_SObjects2
 		return result;
 	}
 
+	/**
+	 * Gets the Id values, but with the option to omit null values
+	 *
+	 * @param field The Schema.SObjectField to get their Id values
+	 * @param omitNulls If set to TRUE, null values will be removed from the result
+	 *
+	 * @return The Id values of the given sObjectField, null values are omitted
+	 */
+	@TestVisible
+	protected Set<Id> getIdFieldValues(Schema.SObjectField field, Boolean omitNulls)
+	{
+		Set<Id> result = getIdFieldValues(field);
+
+		if (omitNulls)
+		{
+			result.remove(null);
+		}
+		return result;
+	}
+
 	/**
 	 * @param sObjectField The Schema.SObjectField to get their Id values
 	 * @param criteria The criteria condition that must be met to include the value in the return
@@ -791,11 +811,13 @@ public virtual class fflib_SObjects2
 		return result;
 	}
 
+	@TestVisible
 	protected virtual List<SObject> getRecordsIsNot(Schema.SObjectField sObjectField, Id idValue)
 	{
 		return getRecordsNotIn(sObjectField, new Set<Id>{ idValue });
 	}
 
+	@TestVisible
 	protected virtual List<SObject> getRecordsNotIn(Schema.SObjectField sObjectField, Set<Id> idValues)
 	{
 		List<SObject> result = new List<SObject>();

sfdx-source/apex-extensions/tests/classes/domains/fflib_SObjects2Test.cls

@@ -105,7 +105,7 @@ private class fflib_SObjects2Test
 		domain.getFieldsByField(Account.Id, Account.AnnualRevenue);
 		domain.getFieldByField(Account.Id, Account.Id);
 		domain.getIdFieldsByIdField(Account.Id, Account.Id);
-		domain.getIdFieldsByStringField(Account.Name, Account.Id);
+		domain.getIdFieldsByStringField(Account.Id, Account.Name);
 		domain.getIdFieldValues(Account.Id);
 		domain.getIdFieldValues(Account.Id, criteria);
 		domain.getDecimalFieldValues(Account.BillingLatitude, criteria);
@@ -117,8 +117,16 @@ private class fflib_SObjects2Test
 		domain.getSObjectsByStringField(Account.Name);
 		domain.getStringFieldByStringField(Account.Name, Account.AccountNumber);
 		domain.getStringFieldValues(Account.Name, criteria);
-		domain.stri
+		domain.stripInaccessibleFields();
-
+		domain.getDateFieldValues(Account.CreatedDate);
+		domain.getDateFieldValues(Account.CreatedDate, criteria);
+		domain.getIdFieldValues(Account.Id, criteria);
+		domain.getRecords(Account.Id, domain.getFirstSObject().Id);
+		domain.getRecords(Account.Name, 'A');
+		domain.getRecordsIsNot(Account.Name, 'A');
+		domain.getRecordsIsNot(Account.Id, domain.getFirstSObject().Id);
+		domain.getSObjectByIdField(Account.Id);
+		domain.getIdFieldValues(Account.Id, true);
 		// todo - add assertions
 	}
 
@@ -462,7 +470,6 @@ private class fflib_SObjects2Test
 		);
 	}
 
-
 	@IsTest
 	static void itShouldReturnRecordsIds()
 	{