Arvados

See attached log from run-tests-doc-pysdk-api-fuse: #1044

    def runTest(self):
        collection = arvados.collection.Collection(api_client=self.api)
        collection.save_new()

        m = self.make_mount(fuse.CollectionDirectory)
        with llfuse.lock:
            m.new_collection(collection.api_response(), collection)
        self.assertTrue(m.writable())

        self.assertNotIn("file1.txt", collection)

        self.assertEqual(0, self.operations.write_counter.get())
        self.pool.apply(fuseWriteFileTestHelperWriteFile, (self.mounttmp,))
        self.assertEqual(12, self.operations.write_counter.get())

        with collection.open("file1.txt") as f:
            self.assertEqual(f.read(), "Hello world!")

        self.assertEqual(0, self.operations.read_counter.get())
        self.pool.apply(fuseWriteFileTestHelperReadFile, (self.mounttmp,))
>       self.assertEqual(12, self.operations.read_counter.get())
E       AssertionError: 12 != 24