wic: Return error code when wic fails to invoke command

Return 1 if command doesn't exist or wic is called without
any commmand.
Return result of invoke_command as wic return code.

Added tests for unsupported command and no command.

Fixed typo in test case test02_createhelp spotted by this fix.

[YOCTO #7856]

(From OE-Core rev: ebd9f7b1da8ed556e98aab4d5f4e81707ac44b27)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/wic.py

@@ -52,7 +52,7 @@ class Wic(oeSelfTest):
 
     def test02_createhelp(self):
         """Test wic create --help"""
-        self.assertEqual(0, runCmd('wic creat --help').status)
+        self.assertEqual(0, runCmd('wic create --help').status)
 
     def test03_listhelp(self):
         """Test wic list --help"""
@@ -82,3 +82,12 @@ class Wic(oeSelfTest):
         self.assertEqual(0, runCmd("wic create directdisk-gpt "
                                    "--image-name core-image-minimal").status)
         self.assertEqual(1, len(glob(self.resultdir + "directdisk-*.direct")))
+
+    def test07_unsupported_subcommand(self):
+        """Test unsupported subcommand"""
+        self.assertEqual(1, runCmd('wic unsupported',
+                         ignore_status=True).status)
+
+    def test08_no_command(self):
+        """Test wic without command"""
+        self.assertEqual(1, runCmd('wic', ignore_status=True).status)

scripts/lib/image/help.py

@@ -81,11 +81,13 @@ def invoke_subcommand(args, parser, main_command_usage, subcommands):
     if not args:
         logging.error("No subcommand specified, exiting")
         parser.print_help()
+        return 1
     elif args[0] == "help":
         wic_help(args, main_command_usage, subcommands)
     elif args[0] not in subcommands:
         logging.error("Unsupported subcommand %s, exiting\n" % (args[0]))
         parser.print_help()
+        return 1
     else:
         usage = subcommands.get(args[0], subcommand_error)[1]
         subcommands.get(args[0], subcommand_error)[0](args[1:], usage)

scripts/wic

@@ -305,7 +305,7 @@ def main(argv):
                 parser.print_help()
                 sys.exit(1)
 
-    hlp.invoke_subcommand(args, parser, hlp.wic_help_usage, subcommands)
+    return hlp.invoke_subcommand(args, parser, hlp.wic_help_usage, subcommands)
 
 
 if __name__ == "__main__":