don't mess with the test config settings during the test run

otherwise we're not actually testing what we want to test, and it's darn hard to track down bugs in the test code

h2/src/test/org/h2/test/synth/TestReleaseSelectLock.java

@@ -5,13 +5,12 @@
  */
 package org.h2.test.synth;
 
-import org.h2.test.TestBase;
-
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.Statement;
 import java.util.concurrent.CountDownLatch;
+import org.h2.test.TestBase;
 
 /**
  * Tests lock releasing for concurrent select statements
@@ -26,15 +25,15 @@ public class TestReleaseSelectLock extends TestBase {
      * @param a ignored
      */
     public static void main(String... a) throws Exception {
-        TestBase.createCaller().init().test();
+        TestBase test = TestBase.createCaller().init();
+        test.config.mvStore = false;
+        test.config.mvcc = false;
+        test.config.multiThreaded = true;
+        test.test();
     }
 
     @Override
     public void test() throws Exception {
-        config.mvStore = false;
-        config.mvcc = false;
-        config.multiThreaded = true;
-
         deleteDb(TEST_DB_NAME);
 
         Connection conn = getConnection(TEST_DB_NAME);

h2/src/test/org/h2/test/unit/TestPgServer.java

@@ -25,7 +25,6 @@ import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
-
 import org.h2.api.ErrorCode;
 import org.h2.test.TestBase;
 import org.h2.tools.Server;
@@ -41,15 +40,16 @@ public class TestPgServer extends TestBase {
      * @param a ignored
      */
     public static void main(String... a) throws Exception {
-        TestBase.createCaller().init().test();
+        TestBase test = TestBase.createCaller().init();
+        test.config.memory = true;
+        test.test();
     }
 
     @Override
     public void test() throws Exception {
-        config.multiThreaded = true;
-        config.memory = true;
-        config.mvStore = true;
-        config.mvcc = true;
+        if (!config.memory) {
+            return;
+        }
         // testPgAdapter() starts server by itself without a wait so run it first
         testPgAdapter();
         testLowerCaseIdentifiers();