qemu-iotests: Additional info from qemu-img info

Add a test for the additional information now provided by qemu-img info
when used on qcow2 images. It also tests the qemu QMP output from the
query-block command when running qemu with different runtime options
than specified in the image (ImageInfoSpecific should always refer to
the image).

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

tests/qemu-iotests/065

@@ -0,0 +1,125 @@
+#!/usr/bin/env python2
+#
+# Test for additional information emitted by qemu-img info on qcow2
+# images
+#
+# Copyright (C) 2013 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import re
+import json
+import iotests
+from iotests import qemu_img, qemu_img_pipe
+import unittest
+
+test_img = os.path.join(iotests.test_dir, 'test.img')
+
+class TestImageInfoSpecific(iotests.QMPTestCase):
+    '''Abstract base class for ImageInfoSpecific tests'''
+
+    def setUp(self):
+        if self.img_options is None:
+            self.skipTest('Skipping abstract test class')
+        qemu_img('create', '-f', iotests.imgfmt, '-o', self.img_options,
+                 test_img, '128K')
+
+    def tearDown(self):
+        os.remove(test_img)
+
+class TestQemuImgInfo(TestImageInfoSpecific):
+    '''Abstract base class for qemu-img info tests'''
+
+    img_options = None
+    json_compare = None
+    human_compare = None
+
+    def test_json(self):
+        data = json.loads(qemu_img_pipe('info', '--output=json', test_img))
+        data = data['format-specific']
+        self.assertEqual(data['type'], iotests.imgfmt)
+        self.assertEqual(data['data'], self.json_compare)
+
+    def test_human(self):
+        data = qemu_img_pipe('info', '--output=human', test_img).split('\n')
+        data = data[(data.index('Format specific information:') + 1)
+                    :data.index('')]
+        for field in data:
+            self.assertTrue(re.match('^ {4}[^ ]', field) is not None)
+        data = map(lambda line: line.strip(), data)
+        self.assertEqual(data, self.human_compare)
+
+class TestQMP(TestImageInfoSpecific):
+    '''Abstract base class for qemu QMP tests'''
+
+    img_options = None
+    qemu_options = ''
+    TestImageInfoSpecific = TestImageInfoSpecific
+
+    def setUp(self):
+        self.TestImageInfoSpecific.setUp(self)
+        self.vm = iotests.VM().add_drive(test_img, self.qemu_options)
+        self.vm.launch()
+
+    def tearDown(self):
+        self.vm.shutdown()
+        self.TestImageInfoSpecific.tearDown(self)
+
+    def test_qmp(self):
+        result = self.vm.qmp('query-block')['return']
+        drive = filter(lambda drive: drive['device'] == 'drive0', result)[0]
+        data = drive['inserted']['image']['format-specific']
+        self.assertEqual(data['type'], iotests.imgfmt)
+        self.assertEqual(data['data'], self.compare)
+
+class TestQCow2(TestQemuImgInfo):
+    '''Testing a qcow2 version 2 image'''
+    img_options = 'compat=0.10'
+    json_compare = { 'compat': '0.10' }
+    human_compare = [ 'compat: 0.10' ]
+
+class TestQCow3NotLazy(TestQemuImgInfo):
+    '''Testing a qcow2 version 3 image with lazy refcounts disabled'''
+    img_options = 'compat=1.1,lazy_refcounts=off'
+    json_compare = { 'compat': '1.1', 'lazy-refcounts': False }
+    human_compare = [ 'compat: 1.1', 'lazy refcounts: false' ]
+
+class TestQCow3Lazy(TestQemuImgInfo):
+    '''Testing a qcow2 version 3 image with lazy refcounts enabled'''
+    img_options = 'compat=1.1,lazy_refcounts=on'
+    json_compare = { 'compat': '1.1', 'lazy-refcounts': True }
+    human_compare = [ 'compat: 1.1', 'lazy refcounts: true' ]
+
+class TestQCow3NotLazyQMP(TestQMP):
+    '''Testing a qcow2 version 3 image with lazy refcounts disabled, opening
+       with lazy refcounts enabled'''
+    img_options = 'compat=1.1,lazy_refcounts=off'
+    qemu_options = 'lazy-refcounts=on'
+    compare = { 'compat': '1.1', 'lazy-refcounts': False }
+
+class TestQCow3LazyQMP(TestQMP):
+    '''Testing a qcow2 version 3 image with lazy refcounts enabled, opening
+       with lazy refcounts disabled'''
+    img_options = 'compat=1.1,lazy_refcounts=on'
+    qemu_options = 'lazy-refcounts=off'
+    compare = { 'compat': '1.1', 'lazy-refcounts': True }
+
+TestImageInfoSpecific = None
+TestQemuImgInfo = None
+TestQMP = None
+
+if __name__ == '__main__':
+    iotests.main(supported_fmts=['qcow2'])

tests/qemu-iotests/065.out

@@ -0,0 +1,5 @@
+........
+----------------------------------------------------------------------
+Ran 8 tests
+
+OK

tests/qemu-iotests/group

@@ -69,3 +69,4 @@
 061 rw auto
 062 rw auto
 063 rw auto
+065 rw auto

tests/qemu-iotests/iotests.py

@@ -49,6 +49,10 @@ def qemu_img_verbose(*args):
     '''Run qemu-img without suppressing its output and return the exit code'''
     return subprocess.call(qemu_img_args + list(args))
 
+def qemu_img_pipe(*args):
+    '''Run qemu-img and return its output'''
+    return subprocess.Popen(qemu_img_args + list(args), stdout=subprocess.PIPE).communicate()[0]
+
 def qemu_io(*args):
     '''Run qemu-io and return the stdout data'''
     args = qemu_io_args + list(args)