[checks] Relax check for genisoimage

The rules are similar to isohybrid, but there are no checks for
architecture.

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>

pungi/checks.py

@@ -41,6 +41,15 @@ def is_isohybrid_needed(conf):
     return True
 
 
+def is_genisoimage_needed(conf):
+    """This is only needed locally for productimg and createiso without runroot.
+    """
+    runroot = conf.get('runroot', False)
+    will_do_productimg = conf.get('productimg', False) and conf.get('bootable', False)
+    if runroot and not will_do_productimg:
+        return False
+    return True
+
 # The first element in the tuple is package name expected to have the
 # executable (2nd element of the tuple). The last element is an optional
 # function that should determine if the tool is required based on
@@ -49,7 +58,7 @@ tools = [
     ("isomd5sum", "/usr/bin/implantisomd5", None),
     ("isomd5sum", "/usr/bin/checkisomd5", None),
     ("jigdo", "/usr/bin/jigdo-lite", is_jigdo_needed),
-    ("genisoimage", "/usr/bin/genisoimage", None),
+    ("genisoimage", "/usr/bin/genisoimage", is_genisoimage_needed),
     ("gettext", "/usr/bin/msgfmt", None),
     ("syslinux", "/usr/bin/isohybrid", is_isohybrid_needed),
     ("yum-utils", "/usr/bin/createrepo", None),

tests/test_checks.py

@@ -96,13 +96,38 @@ class CheckDependenciesTestCase(unittest.TestCase):
             'runroot': True,
         }
 
-        with mock.patch('platform.machine') as machine:
-            machine.return_value = 'armhfp'
         with mock.patch('os.path.exists') as exists:
             exists.side_effect = self.dont_find(['/usr/bin/isohybrid'])
             result = checks.check(conf)
 
         self.assertTrue(result)
 
+    def test_genisoimg_not_needed_in_runroot(self):
+        conf = {
+            'runroot': True,
+        }
+
+        with mock.patch('os.path.exists') as exists:
+            exists.side_effect = self.dont_find(['/usr/bin/genisoimage'])
+            result = checks.check(conf)
+
+        self.assertTrue(result)
+
+    def test_genisoimg_needed_for_productimg(self):
+        conf = {
+            'runroot': True,
+            'productimg': True,
+            'bootable': True,
+        }
+
+        with mock.patch('sys.stdout', new_callable=StringIO.StringIO) as out:
+            with mock.patch('os.path.exists') as exists:
+                exists.side_effect = self.dont_find(['/usr/bin/genisoimage'])
+                result = checks.check(conf)
+
+        self.assertIn('genisoimage', out.getvalue())
+        self.assertFalse(result)
+
+
 if __name__ == "__main__":
     unittest.main()