Fix test cases.

h2/src/test/org/h2/test/TestAll.java

@@ -305,6 +305,8 @@ test with small freeList pages, page size 64
 
 comparative sql tests
 
+ValueDecimal.getMemory() is slow
+
 power failure test
 power failure test: MULTI_THREADED=TRUE
 power failure test: larger binaries and additional index.

h2/src/test/org/h2/test/db/TestPowerOff.java

@@ -44,10 +44,12 @@ public class TestPowerOff extends TestBase {
         }
         if (config.big || config.googleAppEngine) {
             dir = getBaseDir();
+            url = dbName;
         } else {
             dir = "memFS:";
+            url = "memFS:/" + dbName;
         }
-        url = dir + "/" + dbName + ";FILE_LOCK=NO;TRACE_LEVEL_FILE=0";
+        url += ";FILE_LOCK=NO;TRACE_LEVEL_FILE=0";
         testSummaryCrash();
         testCrash();
         testShutdown();