Method acquireWriteAndReadLocks

test/simpledb/LockingTest.java:176–179

Unit test for BufferPool.getPage() assuming locking. A single transaction should be able to acquire a read lock after it already has a write lock.

()

   * already has a write lock.
   */
  @Test public void acquireWriteAndReadLocks() throws Exception {
    metaLockTester(tid1, p0, Permissions.READ_WRITE,
                   tid1, p0, Permissions.READ_ONLY, true);
  }

  /**
   * Unit test for BufferPool.getPage() and BufferPool.releasePage()