inodeCount += 3; // test1, file1 and file2 are created
expectedLastInodeId += 3;
assertEquals(inodeCount, fsn.dir.getInodeMapSize());
assertEquals(expectedLastInodeId, fsn.getLastInodeId());
// Concat the /test1/file1 /test1/file2 into /test1/file2
nnrpc.concat(file2, new String[] {file1});
inodeCount--; // file1 and file2 are concatenated to file2
assertEquals(inodeCount, fsn.dir.getInodeMapSize());
assertEquals(expectedLastInodeId, fsn.getLastInodeId());
assertTrue(fs.delete(new Path("/test1"), true));
inodeCount -= 2; // test1 and file2 is deleted