Fix MockDbDataReader.IsDBNull when the value is null

Author: Denis Voituron

DbMocker/Data/MockDbDataReader.cs

@@ -63,7 +63,7 @@ public override string GetDataTypeName(int ordinal)
         {
             return _columns[ordinal].Type.Name;
         }
-
+        
         public override DateTime GetDateTime(int ordinal)
         {
             return (DateTime)GetValue(ordinal);
@@ -166,7 +166,8 @@ public override int GetValues(object[] values)
 
         public override bool IsDBNull(int ordinal)
         {
-            return GetValue(ordinal) == DBNull.Value;
+            return GetValue(ordinal) == DBNull.Value || 
+                  GetValue(ordinal) == null;
         }
 
         public override bool NextResult()

DbMocker/DbMocker.csproj

@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Apps72.Dev.Data.DbMocker</AssemblyName>
     <RootNamespace>Apps72.Dev.Data.DbMocker</RootNamespace>
-    <Version>1.14.0</Version>
+    <Version>1.15.0</Version>
     <PackageId>DbMocker</PackageId>
 	<PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Authors>Denis Voituron</Authors>
@@ -25,10 +25,10 @@ conn.Mocks
     <PackageTags>DbMocker, Mocker, SQLServer, Oracle, Sqlite, EntityFramework, EF, Dapper, UnitTest</PackageTags>
     <PackageReleaseNotes>https://github.com/Apps72/DbMocker</PackageReleaseNotes>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <AssemblyVersion>1.14.0.0</AssemblyVersion>
+    <AssemblyVersion>1.15.0.0</AssemblyVersion>
     <PackageProjectUrl>https://github.com/Apps72/DbMocker</PackageProjectUrl>
     <RepositoryUrl>https://github.com/Apps72/DbMocker</RepositoryUrl>
-    <FileVersion>1.14.0.0</FileVersion>
+    <FileVersion>1.15.0.0</FileVersion>
   </PropertyGroup>
 
   <ItemGroup>

ReadMe.md

@@ -228,6 +228,9 @@ var conn = new MockDbConnection()
 
 ## Releases
 
+## Version 1.15
+- Fix `MockDbDataReader.IsDBNull` when the value is null.
+
 ## Version 1.14
 - Add 'Guid' type in `MockTable.FromFixed` and resource sample files.
 - Add a custom message when a sample conversion fails. Ex: `Invalid conversion of "2020-01-32" to "DateTime", for column "Col1"`.