tests: fix AltCloud tests to not rely on blkid

This just mocks out the AltCloud tests to not invoke blkid.
Our tests should not rely on system command returning any specific
value.

Also, shorten long lines with change in the import name of
DataSourceAltCloud.

LP: #1636531

1 files changed, 59 insertions, 64 deletions

diff --git a/tests/unittests/test_datasource/test_altcloud.py b/tests/unittests/test_datasource/test_altcloud.py
index b0ad86ab..63a2b04d 100644
--- a/tests/unittests/test_datasource/test_altcloud.py
+++ b/tests/unittests/test_datasource/test_altcloud.py
@@ -10,6 +10,7 @@
 This test file exercises the code in sources DataSourceAltCloud.py
 '''
 
+import mock
 import os
 import shutil
 import tempfile
@@ -18,10 +19,7 @@ from cloudinit import helpers
 from cloudinit import util
 from unittest import TestCase
 
-# Get the cloudinit.sources.DataSourceAltCloud import items needed.
-import cloudinit.sources.DataSourceAltCloud
-from cloudinit.sources.DataSourceAltCloud import DataSourceAltCloud
-from cloudinit.sources.DataSourceAltCloud import read_user_data_callback
+import cloudinit.sources.DataSourceAltCloud as dsac
 
 OS_UNAME_ORIG = getattr(os, 'uname')
 
@@ -32,17 +30,17 @@ def _write_cloud_info_file(value):
     with a cloud backend identifier ImageFactory when building
     an image with ImageFactory.
     '''
-    cifile = open(cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE, 'w')
+    cifile = open(dsac.CLOUD_INFO_FILE, 'w')
     cifile.write(value)
     cifile.close()
-    os.chmod(cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE, 0o664)
+    os.chmod(dsac.CLOUD_INFO_FILE, 0o664)
 
 
 def _remove_cloud_info_file():
     '''
     Remove the test CLOUD_INFO_FILE
     '''
-    os.remove(cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE)
+    os.remove(dsac.CLOUD_INFO_FILE)
 
 
 def _write_user_data_files(mount_dir, value):
@@ -122,7 +120,7 @@ class TestGetCloudType(TestCase):
         Forcing read_dmi_data return to match a RHEVm system: RHEV Hypervisor
         '''
         util.read_dmi_data = _dmi_data('RHEV')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual('RHEV', dsrc.get_cloud_type())
 
     def test_vsphere(self):
@@ -131,7 +129,7 @@ class TestGetCloudType(TestCase):
         Forcing read_dmi_data return to match a vSphere system: RHEV Hypervisor
         '''
         util.read_dmi_data = _dmi_data('VMware Virtual Platform')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual('VSPHERE', dsrc.get_cloud_type())
 
     def test_unknown(self):
@@ -140,7 +138,7 @@ class TestGetCloudType(TestCase):
         Forcing read_dmi_data return to match an unrecognized return.
         '''
         util.read_dmi_data = _dmi_data('Unrecognized Platform')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual('UNKNOWN', dsrc.get_cloud_type())
 
 
@@ -154,8 +152,7 @@ class TestGetDataCloudInfoFile(TestCase):
         self.paths = helpers.Paths({'cloud_dir': '/tmp'})
         self.cloud_info_file = tempfile.mkstemp()[1]
         self.dmi_data = util.read_dmi_data
-        cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE = \
-            self.cloud_info_file
+        dsac.CLOUD_INFO_FILE = self.cloud_info_file
 
     def tearDown(self):
         # Reset
@@ -167,14 +164,13 @@ class TestGetDataCloudInfoFile(TestCase):
             pass
 
         util.read_dmi_data = self.dmi_data
-        cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE = \
-            '/etc/sysconfig/cloud-info'
+        dsac.CLOUD_INFO_FILE = '/etc/sysconfig/cloud-info'
 
     def test_rhev(self):
         '''Success Test module get_data() forcing RHEV.'''
 
         _write_cloud_info_file('RHEV')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         dsrc.user_data_rhevm = lambda: True
         self.assertEqual(True, dsrc.get_data())
 
@@ -182,7 +178,7 @@ class TestGetDataCloudInfoFile(TestCase):
         '''Success Test module get_data() forcing VSPHERE.'''
 
         _write_cloud_info_file('VSPHERE')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         dsrc.user_data_vsphere = lambda: True
         self.assertEqual(True, dsrc.get_data())
 
@@ -190,7 +186,7 @@ class TestGetDataCloudInfoFile(TestCase):
         '''Failure Test module get_data() forcing RHEV.'''
 
         _write_cloud_info_file('RHEV')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         dsrc.user_data_rhevm = lambda: False
         self.assertEqual(False, dsrc.get_data())
 
@@ -198,7 +194,7 @@ class TestGetDataCloudInfoFile(TestCase):
         '''Failure Test module get_data() forcing VSPHERE.'''
 
         _write_cloud_info_file('VSPHERE')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         dsrc.user_data_vsphere = lambda: False
         self.assertEqual(False, dsrc.get_data())
 
@@ -206,7 +202,7 @@ class TestGetDataCloudInfoFile(TestCase):
         '''Failure Test module get_data() forcing unrecognized.'''
 
         _write_cloud_info_file('unrecognized')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.get_data())
 
 
@@ -219,7 +215,7 @@ class TestGetDataNoCloudInfoFile(TestCase):
         '''Set up.'''
         self.paths = helpers.Paths({'cloud_dir': '/tmp'})
         self.dmi_data = util.read_dmi_data
-        cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE = \
+        dsac.CLOUD_INFO_FILE = \
             'no such file'
         # We have a different code path for arm to deal with LP1243287
         # We have to switch arch to x86_64 to avoid test failure
@@ -227,7 +223,7 @@ class TestGetDataNoCloudInfoFile(TestCase):
 
     def tearDown(self):
         # Reset
-        cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE = \
+        dsac.CLOUD_INFO_FILE = \
             '/etc/sysconfig/cloud-info'
         util.read_dmi_data = self.dmi_data
         # Return back to original arch
@@ -237,7 +233,7 @@ class TestGetDataNoCloudInfoFile(TestCase):
         '''Test No cloud info file module get_data() forcing RHEV.'''
 
         util.read_dmi_data = _dmi_data('RHEV Hypervisor')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         dsrc.user_data_rhevm = lambda: True
         self.assertEqual(True, dsrc.get_data())
 
@@ -245,7 +241,7 @@ class TestGetDataNoCloudInfoFile(TestCase):
         '''Test No cloud info file module get_data() forcing VSPHERE.'''
 
         util.read_dmi_data = _dmi_data('VMware Virtual Platform')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         dsrc.user_data_vsphere = lambda: True
         self.assertEqual(True, dsrc.get_data())
 
@@ -253,7 +249,7 @@ class TestGetDataNoCloudInfoFile(TestCase):
         '''Test No cloud info file module get_data() forcing unrecognized.'''
 
         util.read_dmi_data = _dmi_data('Unrecognized Platform')
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.get_data())
 
 
@@ -261,11 +257,14 @@ class TestUserDataRhevm(TestCase):
     '''
     Test to exercise method: DataSourceAltCloud.user_data_rhevm()
     '''
+    cmd_pass = ['true']
+    cmd_fail = ['false']
+    cmd_not_found = ['bogus bad command']
+
     def setUp(self):
         '''Set up.'''
         self.paths = helpers.Paths({'cloud_dir': '/tmp'})
         self.mount_dir = tempfile.mkdtemp()
-
         _write_user_data_files(self.mount_dir, 'test user data')
 
     def tearDown(self):
@@ -279,61 +278,44 @@ class TestUserDataRhevm(TestCase):
         except OSError:
             pass
 
-        cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE = \
-            '/etc/sysconfig/cloud-info'
-        cloudinit.sources.DataSourceAltCloud.CMD_PROBE_FLOPPY = \
-            ['/sbin/modprobe', 'floppy']
-        cloudinit.sources.DataSourceAltCloud.CMD_UDEVADM_SETTLE = \
-            ['/sbin/udevadm', 'settle', '--quiet', '--timeout=5']
+        dsac.CLOUD_INFO_FILE = '/etc/sysconfig/cloud-info'
+        dsac.CMD_PROBE_FLOPPY = ['/sbin/modprobe', 'floppy']
+        dsac.CMD_UDEVADM_SETTLE = ['/sbin/udevadm', 'settle',
+                                   '--quiet', '--timeout=5']
 
     def test_mount_cb_fails(self):
         '''Test user_data_rhevm() where mount_cb fails.'''
 
-        cloudinit.sources.DataSourceAltCloud.CMD_PROBE_FLOPPY = \
-            ['echo', 'modprobe floppy']
-
-        dsrc = DataSourceAltCloud({}, None, self.paths)
-
+        dsac.CMD_PROBE_FLOPPY = self.cmd_pass
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.user_data_rhevm())
 
     def test_modprobe_fails(self):
         '''Test user_data_rhevm() where modprobe fails.'''
 
-        cloudinit.sources.DataSourceAltCloud.CMD_PROBE_FLOPPY = \
-            ['ls', 'modprobe floppy']
-
-        dsrc = DataSourceAltCloud({}, None, self.paths)
-
+        dsac.CMD_PROBE_FLOPPY = self.cmd_fail
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.user_data_rhevm())
 
     def test_no_modprobe_cmd(self):
         '''Test user_data_rhevm() with no modprobe command.'''
 
-        cloudinit.sources.DataSourceAltCloud.CMD_PROBE_FLOPPY = \
-            ['bad command', 'modprobe floppy']
-
-        dsrc = DataSourceAltCloud({}, None, self.paths)
-
+        dsac.CMD_PROBE_FLOPPY = self.cmd_not_found
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.user_data_rhevm())
 
     def test_udevadm_fails(self):
         '''Test user_data_rhevm() where udevadm fails.'''
 
-        cloudinit.sources.DataSourceAltCloud.CMD_UDEVADM_SETTLE = \
-            ['ls', 'udevadm floppy']
-
-        dsrc = DataSourceAltCloud({}, None, self.paths)
-
+        dsac.CMD_UDEVADM_SETTLE = self.cmd_fail
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.user_data_rhevm())
 
     def test_no_udevadm_cmd(self):
         '''Test user_data_rhevm() with no udevadm command.'''
 
-        cloudinit.sources.DataSourceAltCloud.CMD_UDEVADM_SETTLE = \
-            ['bad command', 'udevadm floppy']
-
-        dsrc = DataSourceAltCloud({}, None, self.paths)
-
+        dsac.CMD_UDEVADM_SETTLE = self.cmd_not_found
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.user_data_rhevm())
 
 
@@ -359,17 +341,30 @@ class TestUserDataVsphere(TestCase):
         except OSError:
             pass
 
-        cloudinit.sources.DataSourceAltCloud.CLOUD_INFO_FILE = \
+        dsac.CLOUD_INFO_FILE = \
             '/etc/sysconfig/cloud-info'
 
-    def test_user_data_vsphere(self):
+    @mock.patch("cloudinit.sources.DataSourceAltCloud.util.find_devs_with")
+    @mock.patch("cloudinit.sources.DataSourceAltCloud.util.mount_cb")
+    def test_user_data_vsphere_no_cdrom(self, m_mount_cb, m_find_devs_with):
         '''Test user_data_vsphere() where mount_cb fails.'''
 
-        cloudinit.sources.DataSourceAltCloud.MEDIA_DIR = self.mount_dir
+        m_mount_cb.return_value = []
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
+        self.assertEqual(False, dsrc.user_data_vsphere())
+        self.assertEqual(0, m_mount_cb.call_count)
 
-        dsrc = DataSourceAltCloud({}, None, self.paths)
+    @mock.patch("cloudinit.sources.DataSourceAltCloud.util.find_devs_with")
+    @mock.patch("cloudinit.sources.DataSourceAltCloud.util.mount_cb")
+    def test_user_data_vsphere_mcb_fail(self, m_mount_cb, m_find_devs_with):
+        '''Test user_data_vsphere() where mount_cb fails.'''
 
+        m_find_devs_with.return_value = ["/dev/mock/cdrom"]
+        m_mount_cb.side_effect = util.MountFailedError("Unable To mount")
+        dsrc = dsac.DataSourceAltCloud({}, None, self.paths)
         self.assertEqual(False, dsrc.user_data_vsphere())
+        self.assertEqual(1, m_find_devs_with.call_count)
+        self.assertEqual(1, m_mount_cb.call_count)
 
 
 class TestReadUserDataCallback(TestCase):
@@ -398,7 +393,7 @@ class TestReadUserDataCallback(TestCase):
         '''Test read_user_data_callback() with both files.'''
 
         self.assertEqual('test user data',
-                         read_user_data_callback(self.mount_dir))
+                         dsac.read_user_data_callback(self.mount_dir))
 
     def test_callback_dc(self):
         '''Test read_user_data_callback() with only DC file.'''
@@ -408,7 +403,7 @@ class TestReadUserDataCallback(TestCase):
                                 non_dc_file=True)
 
         self.assertEqual('test user data',
-                         read_user_data_callback(self.mount_dir))
+                         dsac.read_user_data_callback(self.mount_dir))
 
     def test_callback_non_dc(self):
         '''Test read_user_data_callback() with only non-DC file.'''
@@ -418,13 +413,13 @@ class TestReadUserDataCallback(TestCase):
                                 non_dc_file=False)
 
         self.assertEqual('test user data',
-                         read_user_data_callback(self.mount_dir))
+                         dsac.read_user_data_callback(self.mount_dir))
 
     def test_callback_none(self):
         '''Test read_user_data_callback() no files are found.'''
 
         _remove_user_data_files(self.mount_dir)
-        self.assertEqual(None, read_user_data_callback(self.mount_dir))
+        self.assertEqual(None, dsac.read_user_data_callback(self.mount_dir))
 
 
 def force_arch(arch=None):