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78 lines
2.2 KiB
78 lines
2.2 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2020 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import pytest
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import shutil
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from gns3server.compute.qemu.utils.qcow2 import Qcow2, Qcow2Error
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def qemu_img():
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"""
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Return the path of qemu-img on system.
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We can't use shutil.which because for safety reason we break
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the PATH to avoid test interacting with real binaries
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"""
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paths = [
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"/usr/bin/qemu-img",
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"/usr/local/bin/qemu-img"
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]
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for path in paths:
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if os.path.exists(path):
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return path
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return None
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def test_valid_base_file():
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qcow2 = Qcow2("tests/resources/empty8G.qcow2")
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assert qcow2.version == 3
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assert qcow2.backing_file is None
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def test_valid_linked_file():
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qcow2 = Qcow2("tests/resources/linked.qcow2")
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assert qcow2.version == 3
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assert qcow2.backing_file == "empty8G.qcow2"
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def test_invalid_file():
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with pytest.raises(Qcow2Error):
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Qcow2("tests/resources/nvram_iou")
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def test_invalid_empty_file(tmpdir):
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open(str(tmpdir / 'a'), 'w+').close()
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with pytest.raises(Qcow2Error):
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Qcow2(str(tmpdir / 'a'))
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@pytest.mark.skipif(qemu_img() is None, reason="qemu-img is not available")
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async def test_rebase(loop, tmpdir):
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shutil.copy("tests/resources/empty8G.qcow2", str(tmpdir / "empty16G.qcow2"))
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shutil.copy("tests/resources/linked.qcow2", str(tmpdir / "linked.qcow2"))
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qcow2 = Qcow2(str(tmpdir / "linked.qcow2"))
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assert qcow2.version == 3
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assert qcow2.backing_file == "empty8G.qcow2"
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await qcow2.rebase(qemu_img(), str(tmpdir / "empty16G.qcow2"))
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assert qcow2.backing_file == str(tmpdir / "empty16G.qcow2")
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