use inmem dbs to speed up slow unit tests

git-svn-id: https://svn.code.sf.net/p/jackcess/code/jackcess/trunk@937 f203690c-595d-4dc9-a70b-905162fa7fd2

pom.xml

           <configuration>
             <forkMode>once</forkMode>
             <parallel>classes</parallel>
-            <threadCount>1</threadCount>
+            <threadCount>2</threadCount>
             <argLine>-Xmx256M</argLine>
             <systemProperties>
               <property>

src/test/java/com/healthmarketscience/jackcess/CursorTest.java

   private static Database createTestTable(final FileFormat fileFormat) 
     throws Exception 
   {
-    Database db = create(fileFormat);
+    Database db = createMem(fileFormat);
 
     Table table = new TableBuilder("test")
       .addColumn(new ColumnBuilder("id", DataType.LONG))
   private static Database createDupeTestTable(final FileFormat fileFormat) 
     throws Exception 
   {
-    Database db = create(fileFormat);
+    Database db = createMem(fileFormat);
 
     Table table = new TableBuilder("test")
       .addColumn(new ColumnBuilder("id", DataType.LONG))
   { 
     for (final TestDB testDB : TestDB.getSupportedForBasename(Basename.INDEX)) {
 
-      Database db = open(testDB);
+      Database db = openMem(testDB);
       Table t1 = db.getTable("Table1");
       Index idx = t1.getIndex(IndexBuilder.PRIMARY_KEY_NAME);
       IndexCursor cursor = CursorBuilder.createCursor(idx);
   public void testIterationEarlyExit() throws Exception {
     for (final FileFormat fileFormat : JetFormatTest.SUPPORTED_FILEFORMATS) {
 
-      Database db = create(fileFormat);
+      Database db = createMem(fileFormat);
 
       Table table = new TableBuilder("test")
         .addColumn(new ColumnBuilder("id", DataType.LONG))

src/test/java/com/healthmarketscience/jackcess/DatabaseTest.java

 
   public void testWriteAndReadInBatch() throws Exception {
     for (final FileFormat fileFormat : SUPPORTED_FILEFORMATS) {
-      Database db = create(fileFormat);
+      Database db = createMem(fileFormat);
       createTestTable(db);
       int count = 1000;
       List<Object[]> rows = new ArrayList<Object[]>(count);
   public void testUpdateRow() throws Exception
   {
     for (final FileFormat fileFormat : SUPPORTED_FILEFORMATS) {
-      Database db = create(fileFormat);
+      Database db = createMem(fileFormat);
 
       Table t = new TableBuilder("test")
         .addColumn(new ColumnBuilder("name", DataType.TEXT))
   public void testUnicodeCompression() throws Exception
   {
     File dbFile = new File("src/test/data/V2003/testUnicodeCompV2003.mdb");
-    Database db = open(Database.FileFormat.V2003, new File("src/test/data/V2003/testUnicodeCompV2003.mdb"));
+    Database db = open(Database.FileFormat.V2003, new File("src/test/data/V2003/testUnicodeCompV2003.mdb"), true);
 
     StringBuilder sb = new StringBuilder(127);
     for(int i = 1; i <= 0xFF; ++i) {