[PATCH 23/23] oeqa/selftest: generalise test_devtool_virtual_kernel_modify

[Ross Burton <ross.burton@arm.com>]

Generalise this test so that it works on more than qemux86-64:

- Don't edit a file in arch/x86 to cause a rebuild, instead use init/
- Look for the edits in the build tree, as the deployed kernel could be
  of any type (zImage/bzImage/etc) and edits may be in the compressed
  part.

Also remove redundant checks on the result of runCmd(), as this will
raise AssertionError exceptions itself so the explicit asserts will
never trigger.

Signed-off-by: Ross Burton <ross.burton@arm.com>
---
 meta/lib/oeqa/selftest/cases/devtool.py | 38 +++++++++++--------------
 1 file changed, 17 insertions(+), 21 deletions(-)

diff --git a/meta/lib/oeqa/selftest/cases/devtool.py b/meta/lib/oeqa/selftest/cases/devtool.py
index ba5dca0359e..3eea2b1a0ea 100644
--- a/meta/lib/oeqa/selftest/cases/devtool.py
+++ b/meta/lib/oeqa/selftest/cases/devtool.py
@@ -1875,8 +1875,9 @@ class DevtoolUpgradeTests(DevtoolBase):
          Expected:       devtool modify is able to checkout the source of the kernel
                          and modification to the source and configurations are reflected
                          when building the kernel.
-         """
-        kernel_provider = get_bb_var('PREFERRED_PROVIDER_virtual/kernel')
+        """
+        kernel_provider = self.td['PREFERRED_PROVIDER_virtual/kernel']
+
         # Clean up the environment
         bitbake('%s -c clean' % kernel_provider)
         tempdir = tempfile.mkdtemp(prefix='devtoolqa')
@@ -1903,33 +1904,28 @@ class DevtoolUpgradeTests(DevtoolBase):
         self.assertExists(os.path.join(tempdir, 'Makefile'), 'Extracted source could not be found')
         #Step 4.2
         configfile = os.path.join(tempdir,'.config')
-        diff = runCmd('diff %s %s' % (tmpconfig, configfile))
-        self.assertEqual(0,diff.status,'Kernel .config file is not the same using bitbake and devtool')
+        runCmd('diff %s %s' % (tmpconfig, configfile))
+
         #Step 4.3
         #NOTE: virtual/kernel is mapped to kernel_provider
-        result = runCmd('devtool build %s' % kernel_provider)
-        self.assertEqual(0,result.status,'Cannot build kernel using `devtool build`')
+        runCmd('devtool build %s' % kernel_provider)
         kernelfile = os.path.join(get_bb_var('KBUILD_OUTPUT', kernel_provider), 'vmlinux')
         self.assertExists(kernelfile, 'Kernel was not build correctly')
 
         #Modify the kernel source
-        modfile = os.path.join(tempdir,'arch/x86/boot/header.S')
-        modstring = "Use a boot loader. Devtool testing."
-        modapplied = runCmd("sed -i 's/Use a boot loader./%s/' %s" % (modstring, modfile))
-        self.assertEqual(0,modapplied.status,'Modification to %s on kernel source failed' % modfile)
+        modfile = os.path.join(tempdir, 'init/version.c')
+        runCmd("sed -i 's/Linux/LiNuX/g' %s" % (modfile))
+
         #Modify the configuration
-        codeconfigfile = os.path.join(tempdir,'.config.new')
+        codeconfigfile = os.path.join(tempdir, '.config.new')
         modconfopt = "CONFIG_SG_POOL=n"
-        modconf = runCmd("sed -i 's/CONFIG_SG_POOL=y/%s/' %s" % (modconfopt, codeconfigfile))
-        self.assertEqual(0,modconf.status,'Modification to %s failed' % codeconfigfile)
+        runCmd("sed -i 's/CONFIG_SG_POOL=y/%s/' %s" % (modconfopt, codeconfigfile))
+
         #Build again kernel with devtool
-        rebuild = runCmd('devtool build %s' % kernel_provider)
-        self.assertEqual(0,rebuild.status,'Fail to build kernel after modification of source and config')
+        runCmd('devtool build %s' % kernel_provider)
+
         #Step 4.4
-        bzimagename = 'bzImage-' + get_bb_var('KERNEL_VERSION_NAME', kernel_provider)
-        bzimagefile = os.path.join(get_bb_var('D', kernel_provider),'boot', bzimagename)
-        checkmodcode = runCmd("grep '%s' %s" % (modstring, bzimagefile))
-        self.assertEqual(0,checkmodcode.status,'Modification on kernel source failed')
+        runCmd("grep '%s' %s" % ('LiNuX', kernelfile))
+
         #Step 4.5
-        checkmodconfg = runCmd("grep %s %s" % (modconfopt, codeconfigfile))
-        self.assertEqual(0,checkmodconfg.status,'Modification to configuration file failed')
+        runCmd("grep %s %s" % (modconfopt, codeconfigfile))
-- 
2.25.1