Remove column default value test

Author: JaBistDuNarrisch

src/Migrator.Tests/Providers/Generic/Generic_DefaultValueTestsBase.cs

@@ -32,4 +32,19 @@ public void DefaultValue_ConvertStringToNotNull_DoesNotThrow()
 
         Provider.ChangeColumn(tableNameSource, new Column(columnName1Target, DbType.String, ColumnProperty.Null));
     }
+
+    [Test]
+    public void RemoveColumnDefaultValue_DoesNotThrow()
+    {
+        const string tableNameSource = "TableName";
+        const string columnName1 = "ColumnName1";
+
+        Provider.AddTable(tableNameSource,
+            new Column(columnName1, DbType.Int32, ColumnProperty.NotNull, 10)
+        );
+
+        Provider.RemoveColumnDefaultValue(tableNameSource, columnName1);
+
+        Provider.ChangeColumn(tableNameSource, new Column(columnName1, DbType.Int32, ColumnProperty.Null));
+    }
 }