update tests

test/EFCore.Jet.FunctionalTests/BulkUpdates/NonSharedModelBulkUpdatesJetTest.cs

@@ -120,7 +120,7 @@ SET `o`.`Title` = 'NewValue'
             """
 UPDATE `Owner` AS `o`
 SET `o`.`OwnedReference_Number` = IIF(LEN(`o`.`Title`) IS NULL, NULL, CLNG(LEN(`o`.`Title`))),
-    `o`.`Title` = (`o`.`OwnedReference_Number` & '')
+    `o`.`Title` = IIF((`o`.`OwnedReference_Number` & '') IS NULL, '', (`o`.`OwnedReference_Number` & ''))
 """);
     }
 

test/EFCore.Jet.FunctionalTests/Query/DbFunctionsJetTest.cs

@@ -453,9 +453,9 @@ WHERE CBOOL(ISDATE(`o`.`CustomerID`)) <> TRUE
 
             AssertSql(
                 """
-SELECT CBOOL(ISDATE((`o`.`OrderDate` & '')))
+SELECT CBOOL(ISDATE(IIF((`o`.`OrderDate` & '') IS NULL, '', (`o`.`OrderDate` & ''))))
 FROM `Orders` AS `o`
-WHERE CBOOL(ISDATE((`o`.`OrderDate` & ''))) = TRUE
+WHERE CBOOL(ISDATE(IIF((`o`.`OrderDate` & '') IS NULL, '', (`o`.`OrderDate` & '')))) = TRUE
 """);
         }
 

test/EFCore.Jet.FunctionalTests/Query/GearsOfWarQueryJetTest.cs

@@ -2555,10 +2555,10 @@ WHERE `m`.`Timeline` <> NOW()
             await base.Where_datetimeoffset_utcnow(isAsync);
 
             AssertSql(
-                """
+                $"""
 SELECT `m`.`Id`, `m`.`CodeName`, `m`.`Date`, `m`.`Difficulty`, `m`.`Duration`, `m`.`Rating`, `m`.`Time`, `m`.`Timeline`
 FROM `Missions` AS `m`
-WHERE `m`.`Timeline` <> DATEADD('n', -480.0, NOW())
+WHERE `m`.`Timeline` <> DATEADD('n', {dtoffset}.0, NOW())
 """);
         }
 
@@ -3839,7 +3839,7 @@ FROM `Weapons` AS `w`
 
             AssertSql(
                 """
-SELECT IIF(`f`.`Eradicated` = FALSE, 'False', IIF(`f`.`Eradicated` = TRUE, 'True', NULL))
+SELECT IIF(`f`.`Eradicated` = FALSE, 'False', IIF(`f`.`Eradicated` = TRUE, 'True', ''))
 FROM `Factions` AS `f`
 """);
         }

test/EFCore.Jet.FunctionalTests/Query/NorthwindMiscellaneousQueryJetTest.cs

@@ -3211,10 +3211,10 @@ ORDER BY `o1`.`c`
             await base.Query_expression_with_to_string_and_contains(isAsync);
 
             AssertSql(
-"""
+                """
 SELECT `o`.`CustomerID`
 FROM `Orders` AS `o`
-WHERE `o`.`OrderDate` IS NOT NULL AND ((`o`.`EmployeeID` & '') LIKE '%7%')
+WHERE `o`.`OrderDate` IS NOT NULL AND (IIF((`o`.`EmployeeID` & '') IS NULL, '', (`o`.`EmployeeID` & '')) LIKE '%7%')
 """);
         }
 
@@ -3261,9 +3261,11 @@ WHERE `o`.`OrderDate` IS NOT NULL
             await base.Select_expression_other_to_string(isAsync);
 
             AssertSql(
-                $@"SELECT (`o`.`OrderDate` & '') AS `ShipName`
+                """
+SELECT IIF((`o`.`OrderDate` & '') IS NULL, '', (`o`.`OrderDate` & '')) AS `ShipName`
 FROM `Orders` AS `o`
-WHERE `o`.`OrderDate` IS NOT NULL");
+WHERE `o`.`OrderDate` IS NOT NULL
+""");
         }
 
         public override async Task Select_expression_date_add_year(bool isAsync)

test/EFCore.Jet.FunctionalTests/Query/TPCGearsOfWarQueryJetTest.cs

@@ -3744,10 +3744,10 @@ WHERE `m`.`Timeline` <> NOW()
         await base.Where_datetimeoffset_utcnow(async);
 
         AssertSql(
-            """
+            $"""
 SELECT `m`.`Id`, `m`.`CodeName`, `m`.`Date`, `m`.`Difficulty`, `m`.`Duration`, `m`.`Rating`, `m`.`Time`, `m`.`Timeline`
 FROM `Missions` AS `m`
-WHERE `m`.`Timeline` <> DATEADD('n', -480.0, NOW())
+WHERE `m`.`Timeline` <> DATEADD('n', {dtoffset}.0, NOW())
 """);
     }
 
@@ -12605,8 +12605,8 @@ GROUP BY `m`.`CodeName`
         await base.ToString_boolean_property_nullable(async);
 
         AssertSql(
-"""
-SELECT IIF(`l`.`Eradicated` = FALSE, 'False', IIF(`l`.`Eradicated` = TRUE, 'True', NULL))
+            """
+SELECT IIF(`l`.`Eradicated` = FALSE, 'False', IIF(`l`.`Eradicated` = TRUE, 'True', ''))
 FROM `LocustHordes` AS `l`
 """);
     }

test/EFCore.Jet.FunctionalTests/Query/TPTGearsOfWarQueryJetTest.cs

@@ -2945,10 +2945,10 @@ WHERE `m`.`Timeline` <> NOW()
         await base.Where_datetimeoffset_utcnow(async);
 
         AssertSql(
-            """
+            $"""
 SELECT `m`.`Id`, `m`.`CodeName`, `m`.`Date`, `m`.`Difficulty`, `m`.`Duration`, `m`.`Rating`, `m`.`Time`, `m`.`Timeline`
 FROM `Missions` AS `m`
-WHERE `m`.`Timeline` <> DATEADD('n', -480.0, NOW())
+WHERE `m`.`Timeline` <> DATEADD('n', {dtoffset}.0, NOW())
 """);
     }
 
@@ -10172,8 +10172,8 @@ GROUP BY `m`.`CodeName`
         await base.ToString_boolean_property_nullable(async);
 
         AssertSql(
-        """
-SELECT IIF(`l`.`Eradicated` = FALSE, 'False', IIF(`l`.`Eradicated` = TRUE, 'True', NULL))
+            """
+SELECT IIF(`l`.`Eradicated` = FALSE, 'False', IIF(`l`.`Eradicated` = TRUE, 'True', ''))
 FROM `Factions` AS `f`
 INNER JOIN `LocustHordes` AS `l` ON `f`.`Id` = `l`.`Id`
 """);