def test_empty_sparse(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.truncate(MB)
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 0)
def test_full(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.write(b"x" * qcow2.CLUSTER_SIZE * 3)
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 3)
def test_full(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.write(b"x" * qcow2.CLUSTER_SIZE * 3)
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 3)
def test_empty_sparse(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.truncate(MB)
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 0)
def test_multiple_blocks(self, tmpdir):
filename = str(tmpdir.join("test"))
with io.open(filename, "wb") as f:
f.write(b"x")
f.seek(16 * 1024)
f.write(b"x")
f.seek(42 * 1024)
f.write(b"x")
runs = qemuimg.map(filename)
assert qcow2.count_clusters(runs) == 1
def test_multiple_blocks(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.write(b"x")
f.seek(16 * 1024)
f.write(b"x")
f.seek(42 * 1024)
f.write(b"x")
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 1)
def test_multiple_blocks(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.write(b"x")
f.seek(16 * 1024)
f.write(b"x")
f.seek(42 * 1024)
f.write(b"x")
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 1)
def test_big_sparse(self, tmpdir):
filename = str(tmpdir.join("test"))
with io.open(filename, "wb") as f:
f.truncate(1024 * MB)
# First cluster
f.write(b"x")
# Second cluster
f.seek(512 * MB)
f.write(b"x")
runs = qemuimg.map(filename)
assert qcow2.count_clusters(runs) == 2
def test_big_sparse(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.truncate(1024 * MB)
# First cluster
f.write(b"x")
# Second cluster
f.seek(512 * MB)
f.write(b"x")
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 2)
def test_big_sparse(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.truncate(1024 * MB)
# First cluster
f.write(b"x")
# Second cluster
f.seek(512 * MB)
f.write(b"x")
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 2)
def test_partial(self, tmpdir):
filename = str(tmpdir.join("test"))
with io.open(filename, "wb") as f:
f.truncate(MB)
# First cluster
f.seek(8192)
f.write(b"x")
# Second cluster
f.seek(qcow2.CLUSTER_SIZE)
f.write(b"x")
f.seek(qcow2.CLUSTER_SIZE * 2 - 1)
f.write(b"x")
# Third cluster
f.seek(qcow2.CLUSTER_SIZE * 2)
f.write(b"x")
runs = qemuimg.map(filename)
assert qcow2.count_clusters(runs) == 3
def test_partial(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.truncate(MB)
# First cluster
f.seek(8192)
f.write(b"x")
# Second cluster
f.seek(qcow2.CLUSTER_SIZE)
f.write(b"x")
f.seek(qcow2.CLUSTER_SIZE * 2 - 1)
f.write(b"x")
# Third cluster
f.seek(qcow2.CLUSTER_SIZE * 2)
f.write(b"x")
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 3)
def test_partial(self):
with namedTemporaryDir() as tmpdir:
filename = os.path.join(tmpdir, 'test')
with io.open(filename, "wb") as f:
f.truncate(MB)
# First cluster
f.seek(8192)
f.write(b"x")
# Second cluster
f.seek(qcow2.CLUSTER_SIZE)
f.write(b"x")
f.seek(qcow2.CLUSTER_SIZE * 2 - 1)
f.write(b"x")
# Third cluster
f.seek(qcow2.CLUSTER_SIZE * 2)
f.write(b"x")
runs = qemuimg.map(filename)
self.assertEqual(qcow2.count_clusters(runs), 3)
def test_full(self, tmpdir):
filename = str(tmpdir.join("test"))
with io.open(filename, "wb") as f:
f.write(b"x" * qcow2.CLUSTER_SIZE * 3)
runs = qemuimg.map(filename)
assert qcow2.count_clusters(runs) == 3
def test_empty_sparse(self, tmpdir):
filename = str(tmpdir.join("test"))
with io.open(filename, "wb") as f:
f.truncate(MB)
runs = qemuimg.map(filename)
assert qcow2.count_clusters(runs) == 0
def test_empty(self, tmpdir):
filename = str(tmpdir.join("test"))
with io.open(filename, "wb"):
pass
runs = qemuimg.map(filename)
assert qcow2.count_clusters(runs) == 0
