9a8b135267
You can't pickle a static method reference which complicates being able to save the node graph when the "rollback" call-back wants to hold references to these functions. The outer module (localoop.py) is small anyway, so from an organisation point of view the difference is minimal. Since these are really only called with parameters from the containing class, they could be class methods with no parameters, at the small expense of having to fiddle the mbr test-case a bit. Change-Id: I6f9592a4295abe1b41294b79828bc2f3c2da01c6
158 lines
5.9 KiB
Python
158 lines
5.9 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import fixtures
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import logging
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import os
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import subprocess
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import diskimage_builder.block_device.tests.test_base as tb
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from diskimage_builder.block_device.level0.localloop import image_create
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from diskimage_builder.block_device.level1.mbr import MBR
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logger = logging.getLogger(__name__)
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class TestMBR(tb.TestBase):
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disk_size_10M = 10 * 1024 * 1024
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disk_size_1G = 1024 * 1024 * 1024
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def _get_path_for_partx(self):
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"""Searches and sets the path for partx
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Because different distributions store the partx binary
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at different places, there is the need to look for it.
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"""
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dirs = ["/bin", "/usr/bin", "/sbin", "/usr/sbin"]
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for d in dirs:
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if os.path.exists(os.path.join(d, "partx")):
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return os.path.join(d, "partx")
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return
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# If not found, try without path.
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return "partx"
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def setUp(self):
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super(TestMBR, self).setUp()
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self.tmp_dir = fixtures.TempDir()
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self.useFixture(self.tmp_dir)
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self.image_path = os.path.join(self.tmp_dir.path, "image.raw")
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image_create(self.image_path, TestMBR.disk_size_1G)
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logger.debug("Temp image is %s", self.image_path)
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self.partx_args = [self._get_path_for_partx(), "--raw",
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"--output", "NR,START,END,TYPE,FLAGS,SCHEME",
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"-g", "-b", "-", self.image_path]
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def _run_partx(self, image_path):
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logger.info("Running command: %s", self.partx_args)
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return subprocess.check_output(self.partx_args).decode("ascii")
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def test_one_ext_partition(self):
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"""Creates one partition and check correctness with partx."""
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with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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mbr.add_partition(False, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(self.image_path)
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self.assertEqual(
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"1 2048 2097151 0xf 0x0 dos\n"
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"5 4096 24575 0x83 0x0 dos\n", output)
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def test_zero_partitions(self):
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"""Creates no partition and check correctness with partx."""
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with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024):
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pass
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output = self._run_partx(self.image_path)
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self.assertEqual("", output)
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def test_many_ext_partitions(self):
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"""Creates many partition and check correctness with partx."""
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with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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for nr in range(0, 64):
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mbr.add_partition(False, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(self.image_path)
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lines = output.split("\n")
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self.assertEqual(66, len(lines))
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self.assertEqual(
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"1 2048 2097151 0xf 0x0 dos", lines[0])
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start_block = 4096
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end_block = start_block + TestMBR.disk_size_10M / 512 - 1
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for nr in range(1, 65):
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fields = lines[nr].split(" ")
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self.assertEqual(6, len(fields))
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self.assertEqual(nr + 4, int(fields[0]))
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self.assertEqual(start_block, int(fields[1]))
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self.assertEqual(end_block, int(fields[2]))
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self.assertEqual("0x83", fields[3])
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self.assertEqual("0x0", fields[4])
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self.assertEqual("dos", fields[5])
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start_block += 22528
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end_block = start_block + TestMBR.disk_size_10M / 512 - 1
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def test_one_pri_partition(self):
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"""Creates one primary partition and check correctness with partx."""
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with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(self.image_path)
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self.assertEqual(
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"1 2048 22527 0x83 0x0 dos\n", output)
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def test_three_pri_partition(self):
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"""Creates three primary partition and check correctness with partx."""
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with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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for _ in range(3):
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mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(self.image_path)
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self.assertEqual(
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"1 2048 22527 0x83 0x0 dos\n"
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"2 22528 43007 0x83 0x0 dos\n"
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"3 43008 63487 0x83 0x0 dos\n", output)
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def test_many_pri_and_ext_partition(self):
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"""Creates many primary and extended partitions."""
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with MBR(self.image_path, TestMBR.disk_size_1G, 1024 * 1024) as mbr:
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# Create three primary partitions
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for _ in range(3):
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mbr.add_partition(True, False, TestMBR.disk_size_10M, 0x83)
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for _ in range(7):
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mbr.add_partition(False, False, TestMBR.disk_size_10M, 0x83)
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output = self._run_partx(self.image_path)
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self.assertEqual(
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"1 2048 22527 0x83 0x0 dos\n" # Primary 1
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"2 22528 43007 0x83 0x0 dos\n" # Primary 2
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"3 43008 63487 0x83 0x0 dos\n" # Primary 3
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"4 63488 2097151 0xf 0x0 dos\n" # Extended
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"5 65536 86015 0x83 0x0 dos\n" # Extended Partition 1
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"6 88064 108543 0x83 0x0 dos\n" # Extended Partition 2
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"7 110592 131071 0x83 0x0 dos\n" # ...
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"8 133120 153599 0x83 0x0 dos\n"
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"9 155648 176127 0x83 0x0 dos\n"
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"10 178176 198655 0x83 0x0 dos\n"
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"11 200704 221183 0x83 0x0 dos\n", output)
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