5 files changed, 58 insertions, 9 deletions
diff --git a/tests/functional/qemu_test/__init__.py b/tests/functional/qemu_test/__init__.py
index f33282efe8..67f87be9c4 100644
--- a/tests/functional/qemu_test/__init__.py
+++ b/tests/functional/qemu_test/__init__.py
@@ -12,3 +12,4 @@ from .cmd import has_cmd, has_cmds, run_cmd, is_readable_executable_file, \
     interrupt_interactive_console_until_pattern, wait_for_console_pattern, \
     exec_command, exec_command_and_wait_for_pattern, get_qemu_img
 from .testcase import QemuBaseTest, QemuUserTest, QemuSystemTest
+from .linuxkernel import LinuxKernelTest
diff --git a/tests/functional/qemu_test/asset.py b/tests/functional/qemu_test/asset.py
index d3be2aff82..3ec429217e 100644
--- a/tests/functional/qemu_test/asset.py
+++ b/tests/functional/qemu_test/asset.py
@@ -43,15 +43,21 @@ class Asset:
         if self.hash is None:
             return True
         if len(self.hash) == 64:
-            sum_prog = 'sha256sum'
+            hl = hashlib.sha256()
         elif len(self.hash) == 128:
-            sum_prog = 'sha512sum'
+            hl = hashlib.sha512()
         else:
             raise Exception("unknown hash type")
 
-        checksum = subprocess.check_output(
-            [sum_prog, str(cache_file)]).split()[0]
-        return self.hash == checksum.decode("utf-8")
+        # Calculate the hash of the file:
+        with open(cache_file, 'rb') as file:
+            while True:
+                chunk = file.read(1 << 20)
+                if not chunk:
+                    break
+                hl.update(chunk)
+
+        return  hl.hexdigest()
 
     def valid(self):
         return self.cache_file.exists() and self._check(self.cache_file)
diff --git a/tests/functional/qemu_test/cmd.py b/tests/functional/qemu_test/cmd.py
index 3acd617324..cbabb1ceed 100644
--- a/tests/functional/qemu_test/cmd.py
+++ b/tests/functional/qemu_test/cmd.py
@@ -187,7 +187,7 @@ def get_qemu_img(test):
     qemu_img = os.path.join(BUILD_DIR, 'qemu-img')
     if os.path.exists(qemu_img):
         return qemu_img
-    if has_cmd('qemu-img'):
+    (has_system_qemu_img, errmsg) = has_cmd('qemu-img')
+    if has_system_qemu_img:
         return 'qemu-img'
-    test.skipTest('Could not find "qemu-img", which is required to '
-                  'create temporary images')
+    test.skipTest(errmsg)
diff --git a/tests/functional/qemu_test/linuxkernel.py b/tests/functional/qemu_test/linuxkernel.py
new file mode 100644
index 0000000000..fdd5307629
--- /dev/null
+++ b/tests/functional/qemu_test/linuxkernel.py
@@ -0,0 +1,41 @@
+# Test class for testing the boot process of a Linux kernel
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later.  See the COPYING file in the top-level directory.
+
+import os
+
+from .testcase import QemuSystemTest
+from .cmd import run_cmd, wait_for_console_pattern
+from .utils import archive_extract
+
+class LinuxKernelTest(QemuSystemTest):
+    KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
+
+    def wait_for_console_pattern(self, success_message, vm=None):
+        wait_for_console_pattern(self, success_message,
+                                 failure_message='Kernel panic - not syncing',
+                                 vm=vm)
+
+    def extract_from_deb(self, deb_path, path):
+        """
+        Extracts a file from a deb package into the test workdir
+
+        :param deb_path: path to the deb archive
+        :param path: path within the deb archive of the file to be extracted
+        :returns: path of the extracted file
+        """
+        cwd = os.getcwd()
+        os.chdir(self.workdir)
+        (stdout, stderr, ret) = run_cmd(['ar', 't', deb_path])
+        file_path = stdout.split()[2]
+        run_cmd(['ar', 'x', deb_path, file_path])
+        archive_extract(file_path, self.workdir)
+        os.chdir(cwd)
+        # Return complete path to extracted file.  Because callers to
+        # extract_from_deb() specify 'path' with a leading slash, it is
+        # necessary to use os.path.relpath() as otherwise os.path.join()
+        # interprets it as an absolute path and drops the self.workdir part.
+        return os.path.normpath(os.path.join(self.workdir,
+                                             os.path.relpath(path, '/')))
+
diff --git a/tests/functional/qemu_test/tesseract.py b/tests/functional/qemu_test/tesseract.py
index c4087b7c11..db441027b9 100644
--- a/tests/functional/qemu_test/tesseract.py
+++ b/tests/functional/qemu_test/tesseract.py
@@ -11,7 +11,8 @@ import logging
 from . import has_cmd, run_cmd
 
 def tesseract_available(expected_version):
-    if not has_cmd('tesseract'):
+    (has_tesseract, _) = has_cmd('tesseract')
+    if not has_tesseract:
         return False
     (stdout, stderr, ret) = run_cmd([ 'tesseract', '--version'])
     if ret: