[OE-core] [PATCH v5 2/2] selftest/wic: Add tests for --exclude-dir option.

[Kristian Amlie]

Based partially on an earlier patch by Maciej Borzecki.

Signed-off-by: Kristian Amlie <kristian.amlie at mender.io>
---
 meta/lib/oeqa/selftest/wic.py | 97 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)

diff --git a/meta/lib/oeqa/selftest/wic.py b/meta/lib/oeqa/selftest/wic.py
index 3db00a6..cfe7d30 100644
--- a/meta/lib/oeqa/selftest/wic.py
+++ b/meta/lib/oeqa/selftest/wic.py
@@ -322,6 +322,103 @@ class Wic(oeSelfTest):
         self.assertEqual(0, status)
         self.assertEqual(1, len(glob(self.resultdir + "%(wks)s-*.direct" % bbvars)))
 
+    def test_exclude_path(self):
+        """Test --exclude-path wks option."""
+
+        wks_file = 'temp.wks'
+        with open(wks_file, 'w') as wks:
+            rootfs_dir = get_bb_var('IMAGE_ROOTFS', 'core-image-minimal')
+            wks.write("""part / --source rootfs --ondisk mmcblk0 --fstype=ext4 --exclude-path usr
+part /usr --source rootfs --ondisk mmcblk0 --fstype=ext4 --rootfs-dir %s/usr
+part /etc --source rootfs --ondisk mmcblk0 --fstype=ext4 --exclude-path bin/ --rootfs-dir %s/usr"""
+                      % (rootfs_dir, rootfs_dir))
+        self.assertEqual(0, runCmd("wic create %s -e core-image-minimal" \
+                                   % wks_file).status)
+
+        os.remove(wks_file)
+        wicout = glob(self.resultdir + "%s-*direct" % 'temp')
+        self.assertEqual(1, len(wicout))
+
+        wicimg = wicout[0]
+
+        # verify partition size with wic
+        res = runCmd("parted -m %s unit b p 2>/dev/null" % wicimg)
+        self.assertEqual(0, res.status)
+
+        # parse parted output which looks like this:
+        # BYT;\n
+        # /var/tmp/wic/build/tmpfwvjjkf_-201611101222-hda.direct:200MiB:file:512:512:msdos::;\n
+        # 1:0.00MiB:200MiB:200MiB:ext4::;\n
+        partlns = res.output.splitlines()[2:]
+
+        self.assertEqual(3, len(partlns))
+
+        for part in [1, 2, 3]:
+            part_file = os.path.join(self.resultdir, "selftest_img.part%d" % part)
+            partln = partlns[part-1].split(":")
+            self.assertEqual(7, len(partln))
+            start = int(partln[1].rstrip("B")) / 512
+            length = int(partln[3].rstrip("B")) / 512
+            self.assertEqual(0, runCmd("dd if=%s of=%s skip=%d count=%d" %
+                                       (wicimg, part_file, start, length)).status)
+
+        # Test partition 1, should contain the normal root directories, except
+        # /usr.
+        res = runCmd("debugfs -R 'ls -p' %s 2>/dev/null" % os.path.join(self.resultdir, "selftest_img.part1"))
+        self.assertEqual(0, res.status)
+        files = [line.split('/')[5] for line in res.output.split('\n')]
+        self.assertIn("etc", files)
+        self.assertNotIn("usr", files)
+
+        # Partition 2, should contain common directories for /usr, not root
+        # directories.
+        res = runCmd("debugfs -R 'ls -p' %s 2>/dev/null" % os.path.join(self.resultdir, "selftest_img.part2"))
+        self.assertEqual(0, res.status)
+        files = [line.split('/')[5] for line in res.output.split('\n')]
+        self.assertNotIn("etc", files)
+        self.assertNotIn("usr", files)
+        self.assertIn("share", files)
+
+        # Partition 3, should contain the same as partition 2, including the bin
+        # directory, but not the files inside it.
+        res = runCmd("debugfs -R 'ls -p' %s 2>/dev/null" % os.path.join(self.resultdir, "selftest_img.part3"))
+        self.assertEqual(0, res.status)
+        files = [line.split('/')[5] for line in res.output.split('\n')]
+        self.assertNotIn("etc", files)
+        self.assertNotIn("usr", files)
+        self.assertIn("share", files)
+        self.assertIn("bin", files)
+        res = runCmd("debugfs -R 'ls -p bin' %s 2>/dev/null" % os.path.join(self.resultdir, "selftest_img.part3"))
+        self.assertEqual(0, res.status)
+        files = [line.split('/')[5] for line in res.output.split('\n')]
+        self.assertIn(".", files)
+        self.assertIn("..", files)
+        self.assertEqual(2, len(files))
+
+        for part in [1, 2, 3]:
+            part_file = os.path.join(self.resultdir, "selftest_img.part%d" % part)
+            os.remove(part_file)
+
+    def test_exclude_path_errors(self):
+        """Test --exclude-path wks option error handling."""
+        wks_file = 'temp.wks'
+
+        rootfs_dir = get_bb_var('IMAGE_ROOTFS', 'core-image-minimal')
+
+        # Absolute argument.
+        with open(wks_file, 'w') as wks:
+            wks.write("part / --source rootfs --ondisk mmcblk0 --fstype=ext4 --exclude-path /usr")
+        self.assertNotEqual(0, runCmd("wic create %s -e core-image-minimal" \
+                                      % wks_file, ignore_status=True).status)
+        os.remove(wks_file)
+
+        # Argument pointing to parent directory.
+        with open(wks_file, 'w') as wks:
+            wks.write("part / --source rootfs --ondisk mmcblk0 --fstype=ext4 --exclude-path ././..")
+        self.assertNotEqual(0, runCmd("wic create %s -e core-image-minimal" \
+                                      % wks_file, ignore_status=True).status)
+        os.remove(wks_file)
+
     @testcase(1496)
     def test_bmap(self):
         """Test generation of .bmap file"""
-- 
2.7.4