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selfprivacy-rest-api/tests/test_block_device_utils.py

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#!/usr/bin/env python3
# pylint: disable=redefined-outer-name
# pylint: disable=unused-argument
# pylint: disable=missing-function-docstring
import json
import subprocess
import pytest
from selfprivacy_api.utils.block_devices import (
BlockDevice,
BlockDevices,
get_block_device,
resize_block_device,
)
from tests.common import read_json
SINGLE_LSBLK_OUTPUT = b"""
{
"blockdevices": [
{
"name": "sda1",
"path": "/dev/sda1",
"fsavail": "4614107136",
"fssize": "19814920192",
"fstype": "ext4",
"fsused": "14345314304",
"mountpoints": [
"/nix/store", "/"
],
"label": null,
"uuid": "ec80c004-baec-4a2c-851d-0e1807135511",
"size": 20210236928,
"model": null,
"serial": null,
"type": "part"
}
]
}
"""
@pytest.fixture
def lsblk_singular_mock(mocker):
mock = mocker.patch(
"subprocess.check_output", autospec=True, return_value=SINGLE_LSBLK_OUTPUT
)
return mock
@pytest.fixture
def failed_check_output_mock(mocker):
mock = mocker.patch(
"subprocess.check_output",
autospec=True,
side_effect=subprocess.CalledProcessError(
returncode=1, cmd=["some", "command"]
),
)
return mock
@pytest.fixture
def only_root_in_userdata(mocker, datadir):
mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "only_root.json")
assert read_json(datadir / "only_root.json")["volumes"][0]["device"] == "/dev/sda1"
assert (
read_json(datadir / "only_root.json")["volumes"][0]["mountPoint"]
== "/volumes/sda1"
)
assert read_json(datadir / "only_root.json")["volumes"][0]["fsType"] == "ext4"
return datadir
@pytest.fixture
def no_devices_in_userdata(mocker, datadir):
mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "no_devices.json")
assert read_json(datadir / "no_devices.json")["volumes"] == []
return datadir
@pytest.fixture
def undefined_devices_in_userdata(mocker, datadir):
mocker.patch("selfprivacy_api.utils.USERDATA_FILE", new=datadir / "undefined.json")
assert "volumes" not in read_json(datadir / "undefined.json")
return datadir
def test_create_block_device_object(lsblk_singular_mock, authorized_client):
output = get_block_device("sda1")
assert lsblk_singular_mock.call_count == 1
assert lsblk_singular_mock.call_args[0][0] == [
"lsblk",
"-J",
"-b",
"-o",
"NAME,PATH,FSAVAIL,FSSIZE,FSTYPE,FSUSED,MOUNTPOINTS,LABEL,UUID,SIZE,MODEL,SERIAL,TYPE",
"/dev/sda1",
]
assert output == json.loads(SINGLE_LSBLK_OUTPUT)["blockdevices"][0]
def test_resize_block_device(lsblk_singular_mock, authorized_client):
result = resize_block_device("sdb")
assert result is True
assert lsblk_singular_mock.call_count == 1
assert lsblk_singular_mock.call_args[0][0] == [
"resize2fs",
"sdb",
]
def test_resize_block_device_failed(failed_check_output_mock, authorized_client):
result = resize_block_device("sdb")
assert result is False
assert failed_check_output_mock.call_count == 1
assert failed_check_output_mock.call_args[0][0] == [
"resize2fs",
"sdb",
]
VOLUME_LSBLK_OUTPUT = b"""
{
"blockdevices": [
{
"name": "sdb",
"path": "/dev/sdb",
"fsavail": "11888545792",
"fssize": "12573614080",
"fstype": "ext4",
"fsused": "24047616",
"mountpoints": [
"/volumes/sdb"
],
"label": null,
"uuid": "fa9d0026-ee23-4047-b8b1-297ae16fa751",
"size": 12884901888,
"model": "Volume",
"serial": "21378102",
"type": "disk"
}
]
}
"""
def test_create_block_device(lsblk_singular_mock, authorized_client):
block_device = BlockDevice(json.loads(VOLUME_LSBLK_OUTPUT)["blockdevices"][0])
assert block_device.name == "sdb"
assert block_device.path == "/dev/sdb"
assert block_device.fsavail == "11888545792"
assert block_device.fssize == "12573614080"
assert block_device.fstype == "ext4"
assert block_device.fsused == "24047616"
assert block_device.mountpoints == ["/volumes/sdb"]
assert block_device.label is None
assert block_device.uuid == "fa9d0026-ee23-4047-b8b1-297ae16fa751"
assert block_device.size == "12884901888"
assert block_device.model == "Volume"
assert block_device.serial == "21378102"
assert block_device.type == "disk"
assert block_device.locked is False
assert str(block_device) == "sdb"
assert (
repr(block_device)
== "<BlockDevice sdb of size 12884901888 mounted at ['/volumes/sdb']>"
)
assert hash(block_device) == hash("sdb")
def test_block_devices_equal(lsblk_singular_mock, authorized_client):
block_device = BlockDevice(json.loads(VOLUME_LSBLK_OUTPUT)["blockdevices"][0])
block_device2 = BlockDevice(json.loads(VOLUME_LSBLK_OUTPUT)["blockdevices"][0])
assert block_device == block_device2
@pytest.fixture
def resize_block_mock(mocker):
mock = mocker.patch(
"selfprivacy_api.utils.block_devices.resize_block_device",
autospec=True,
return_value=True,
)
return mock
def test_call_resize_from_block_device(
lsblk_singular_mock, resize_block_mock, authorized_client
):
block_device = BlockDevice(json.loads(VOLUME_LSBLK_OUTPUT)["blockdevices"][0])
block_device.resize()
assert resize_block_mock.call_count == 1
assert resize_block_mock.call_args[0][0] == "/dev/sdb"
assert lsblk_singular_mock.call_count == 0
def test_get_stats_from_block_device(lsblk_singular_mock, authorized_client):
block_device = BlockDevice(json.loads(SINGLE_LSBLK_OUTPUT)["blockdevices"][0])
stats = block_device.stats()
assert stats == {
"name": "sda1",
"path": "/dev/sda1",
"fsavail": "4614107136",
"fssize": "19814920192",
"fstype": "ext4",
"fsused": "14345314304",
"mountpoints": ["/nix/store", "/"],
"label": None,
"uuid": "ec80c004-baec-4a2c-851d-0e1807135511",
"size": "20210236928",
"model": None,
"serial": None,
"type": "part",
}
assert lsblk_singular_mock.call_count == 1
assert lsblk_singular_mock.call_args[0][0] == [
"lsblk",
"-J",
"-b",
"-o",
"NAME,PATH,FSAVAIL,FSSIZE,FSTYPE,FSUSED,MOUNTPOINTS,LABEL,UUID,SIZE,MODEL,SERIAL,TYPE",
"/dev/sda1",
]
def test_mount_block_device(
lsblk_singular_mock, only_root_in_userdata, authorized_client
):
block_device = BlockDevice(json.loads(SINGLE_LSBLK_OUTPUT)["blockdevices"][0])
result = block_device.mount()
assert result is False
volume = BlockDevice(json.loads(VOLUME_LSBLK_OUTPUT)["blockdevices"][0])
result = volume.mount()
assert result is True
assert (
read_json(only_root_in_userdata / "only_root.json")["volumes"][1]["device"]
== "/dev/sdb"
)
assert (
read_json(only_root_in_userdata / "only_root.json")["volumes"][1]["mountPoint"]
== "/volumes/sdb"
)
assert (
read_json(only_root_in_userdata / "only_root.json")["volumes"][1]["fsType"]
== "ext4"
)
def test_mount_block_device_when_undefined(
lsblk_singular_mock, undefined_devices_in_userdata, authorized_client
):
block_device = BlockDevice(json.loads(SINGLE_LSBLK_OUTPUT)["blockdevices"][0])
result = block_device.mount()
assert result is True
assert (
read_json(undefined_devices_in_userdata / "undefined.json")["volumes"][0][
"device"
]
== "/dev/sda1"
)
assert (
read_json(undefined_devices_in_userdata / "undefined.json")["volumes"][0][
"mountPoint"
]
== "/volumes/sda1"
)
assert (
read_json(undefined_devices_in_userdata / "undefined.json")["volumes"][0][
"fsType"
]
== "ext4"
)
def test_unmount_block_device(
lsblk_singular_mock, only_root_in_userdata, authorized_client
):
block_device = BlockDevice(json.loads(SINGLE_LSBLK_OUTPUT)["blockdevices"][0])
result = block_device.unmount()
assert result is True
volume = BlockDevice(json.loads(VOLUME_LSBLK_OUTPUT)["blockdevices"][0])
result = volume.unmount()
assert result is False
assert len(read_json(only_root_in_userdata / "only_root.json")["volumes"]) == 0
def test_unmount_block_device_when_undefined(
lsblk_singular_mock, undefined_devices_in_userdata, authorized_client
):
block_device = BlockDevice(json.loads(SINGLE_LSBLK_OUTPUT)["blockdevices"][0])
result = block_device.unmount()
assert result is False
assert (
len(read_json(undefined_devices_in_userdata / "undefined.json")["volumes"]) == 0
)
FULL_LSBLK_OUTPUT = b"""
{
"blockdevices": [
{
"name": "sda",
"path": "/dev/sda",
"fsavail": null,
"fssize": null,
"fstype": null,
"fsused": null,
"mountpoints": [
null
],
"label": null,
"uuid": null,
"size": 20480786432,
"model": "QEMU HARDDISK",
"serial": "drive-scsi0-0-0-0",
"type": "disk",
"children": [
{
"name": "sda1",
"path": "/dev/sda1",
"fsavail": "4605702144",
"fssize": "19814920192",
"fstype": "ext4",
"fsused": "14353719296",
"mountpoints": [
"/nix/store", "/"
],
"label": null,
"uuid": "ec80c004-baec-4a2c-851d-0e1807135511",
"size": 20210236928,
"model": null,
"serial": null,
"type": "part"
},{
"name": "sda14",
"path": "/dev/sda14",
"fsavail": null,
"fssize": null,
"fstype": null,
"fsused": null,
"mountpoints": [
null
],
"label": null,
"uuid": null,
"size": 1048576,
"model": null,
"serial": null,
"type": "part"
},{
"name": "sda15",
"path": "/dev/sda15",
"fsavail": null,
"fssize": null,
"fstype": "vfat",
"fsused": null,
"mountpoints": [
null
],
"label": null,
"uuid": "6B29-5BA7",
"size": 268435456,
"model": null,
"serial": null,
"type": "part"
}
]
},{
"name": "sdb",
"path": "/dev/sdb",
"fsavail": "11888545792",
"fssize": "12573614080",
"fstype": "ext4",
"fsused": "24047616",
"mountpoints": [
"/volumes/sdb"
],
"label": null,
"uuid": "fa9d0026-ee23-4047-b8b1-297ae16fa751",
"size": 12884901888,
"model": "Volume",
"serial": "21378102",
"type": "disk"
},{
"name": "sr0",
"path": "/dev/sr0",
"fsavail": null,
"fssize": null,
"fstype": null,
"fsused": null,
"mountpoints": [
null
],
"label": null,
"uuid": null,
"size": 1073741312,
"model": "QEMU DVD-ROM",
"serial": "QM00003",
"type": "rom"
}
]
}
"""
@pytest.fixture
def lsblk_full_mock(mocker):
mock = mocker.patch(
"subprocess.check_output", autospec=True, return_value=FULL_LSBLK_OUTPUT
)
BlockDevices().update()
return mock
def test_get_block_devices(lsblk_full_mock, authorized_client):
block_devices = BlockDevices().get_block_devices()
assert len(block_devices) == 2
devices_by_name = {device.name: device for device in block_devices}
sda1 = devices_by_name["sda1"]
sdb = devices_by_name["sdb"]
assert sda1.name == "sda1"
assert sda1.path == "/dev/sda1"
assert sda1.fsavail == "4605702144"
assert sda1.fssize == "19814920192"
assert sda1.fstype == "ext4"
assert sda1.fsused == "14353719296"
assert sda1.mountpoints == ["/nix/store", "/"]
assert sda1.label is None
assert sda1.uuid == "ec80c004-baec-4a2c-851d-0e1807135511"
assert sda1.size == "20210236928"
assert sda1.model is None
assert sda1.serial is None
assert sda1.type == "part"
assert sdb.name == "sdb"
assert sdb.path == "/dev/sdb"
assert sdb.fsavail == "11888545792"
assert sdb.fssize == "12573614080"
assert sdb.fstype == "ext4"
assert sdb.fsused == "24047616"
assert sdb.mountpoints == ["/volumes/sdb"]
assert sdb.label is None
assert sdb.uuid == "fa9d0026-ee23-4047-b8b1-297ae16fa751"
assert sdb.size == "12884901888"
assert sdb.model == "Volume"
assert sdb.serial == "21378102"
assert sdb.type == "disk"
def test_get_block_device(lsblk_full_mock, authorized_client):
block_device = BlockDevices().get_block_device("sda1")
assert block_device is not None
assert block_device.name == "sda1"
assert block_device.path == "/dev/sda1"
assert block_device.fsavail == "4605702144"
assert block_device.fssize == "19814920192"
assert block_device.fstype == "ext4"
assert block_device.fsused == "14353719296"
assert block_device.mountpoints == ["/nix/store", "/"]
assert block_device.label is None
assert block_device.uuid == "ec80c004-baec-4a2c-851d-0e1807135511"
assert block_device.size == "20210236928"
assert block_device.model is None
assert block_device.serial is None
assert block_device.type == "part"
def test_get_nonexistent_block_device(lsblk_full_mock, authorized_client):
block_device = BlockDevices().get_block_device("sda2")
assert block_device is None
def test_get_block_devices_by_mountpoint(lsblk_full_mock, authorized_client):
block_devices = BlockDevices().get_block_devices_by_mountpoint("/nix/store")
assert len(block_devices) == 1
assert block_devices[0].name == "sda1"
assert block_devices[0].path == "/dev/sda1"
assert block_devices[0].fsavail == "4605702144"
assert block_devices[0].fssize == "19814920192"
assert block_devices[0].fstype == "ext4"
assert block_devices[0].fsused == "14353719296"
assert block_devices[0].mountpoints == ["/nix/store", "/"]
assert block_devices[0].label is None
assert block_devices[0].uuid == "ec80c004-baec-4a2c-851d-0e1807135511"
assert block_devices[0].size == "20210236928"
assert block_devices[0].model is None
assert block_devices[0].serial is None
assert block_devices[0].type == "part"
def test_get_block_devices_by_mountpoint_no_match(lsblk_full_mock, authorized_client):
block_devices = BlockDevices().get_block_devices_by_mountpoint("/foo")
assert len(block_devices) == 0
def test_get_root_block_device(lsblk_full_mock, authorized_client):
block_device = BlockDevices().get_root_block_device()
assert block_device is not None
assert block_device.name == "sda1"
assert block_device.path == "/dev/sda1"
assert block_device.fsavail == "4605702144"
assert block_device.fssize == "19814920192"
assert block_device.fstype == "ext4"
assert block_device.fsused == "14353719296"
assert block_device.mountpoints == ["/nix/store", "/"]
assert block_device.label is None
assert block_device.uuid == "ec80c004-baec-4a2c-851d-0e1807135511"
assert block_device.size == "20210236928"
assert block_device.model is None
assert block_device.serial is None
assert block_device.type == "part"
# Unassuming sanity check, yes this did fail
def test_get_real_devices():
block_devices = BlockDevices().get_block_devices()
assert block_devices is not None
assert len(block_devices) > 0
# Unassuming sanity check
def test_get_real_root_device():
devices = BlockDevices().get_block_devices()
try:
block_device = BlockDevices().get_root_block_device()
except Exception as e:
raise Exception("cannot get root device:", e, "devices found:", devices)
assert block_device is not None
assert block_device.name is not None
assert block_device.name != ""
def test_get_real_root_device_raw(authorized_client):
block_device = BlockDevices().get_root_block_device()
assert block_device is not None
assert block_device.name is not None
assert block_device.name != ""
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