GH-3530: Let the SchemaExporter drop and create tables before attempting to create them manually.

Author: David Ellingsworth

src/NHibernate.Test/NHSpecificTest/GH3530/Fixture.cs

@@ -38,12 +38,13 @@ protected override void OnTearDown()
 
 		protected override void CreateSchema()
 		{
+			// Let the SchemaExporter drop and create tables if needed.
+			base.CreateSchema();
+
 			CreateTable("Integer");
 			CreateTable("DateTime");
 			CreateTable("Double");
 			CreateTable("Decimal");
-
-			base.CreateSchema();
 		}
 
 		/// <summary>

src/NHibernate.Test/NHSpecificTest/GH3530/Mappings.hbm.xml

@@ -7,19 +7,19 @@
   not provide a mechanism of doing this, hence they have a
   schema-action of 'none'.
   -->
-  <class name="IntegerEntity" schema-action="none">
+  <class name="IntegerEntity" schema-action="drop">
     <id name="Id" generator="guid.comb" />
     <property name="DataValue" column="DataValue"/>
   </class>
-  <class name="DateTimeEntity" schema-action="none">
+  <class name="DateTimeEntity" schema-action="drop">
     <id name="Id" generator="guid.comb" />
     <property name="DataValue" column="DataValue"/>
   </class>
-  <class name="DoubleEntity" schema-action="none">
+  <class name="DoubleEntity" schema-action="drop">
     <id name="Id" generator="guid.comb" />
     <property name="DataValue" column="DataValue"/>
   </class>
-  <class name="DecimalEntity" schema-action="none">
+  <class name="DecimalEntity" schema-action="drop">
     <id name="Id" generator="guid.comb" />
     <property name="DataValue" column="DataValue"/>
   </class>