Bug 1278890 - Add xpcshell support to test package mach environment, r=armenzg

This adds the 'xpcshell-test' command to the mach environment found in the test
package. This will allow developers to easily run xpcshell after checking out
and interactive worker.

MozReview-Commit-ID: fBAbfuG5XQ

testing/xpcshell/mach_test_package_commands.py

@@ -0,0 +1,65 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import unicode_literals
+
+import os
+import sys
+from argparse import Namespace
+from functools import partial
+
+
+import mozlog
+from xpcshellcommandline import parser_desktop
+
+from mach.decorators import (
+    CommandProvider,
+    Command,
+)
+
+
+def run_xpcshell(context, **kwargs):
+    args = Namespace(**kwargs)
+    args.utility_path = context.bin_dir
+    args.testingModulesDir = context.modules_dir
+
+    if not args.appPath:
+        args.appPath = os.path.dirname(context.find_firefox())
+
+    if not args.xpcshell:
+        args.xpcshell = os.path.join(args.appPath, 'xpcshell')
+
+    if not args.pluginsPath:
+        for path in context.ancestors(args.appPath, depth=2):
+            test = os.path.join(path, 'plugins')
+            if os.path.isdir(test):
+                args.pluginsPath = test
+                break
+
+    log = mozlog.commandline.setup_logging("XPCShellTests",
+                                           args,
+                                           {"mach": sys.stdout},
+                                           {"verbose": True})
+
+    if args.testPaths:
+        test_root = os.path.join(context.package_root, 'xpcshell', 'tests')
+        normalize = partial(context.normalize_test_path, test_root)
+        args.testPaths = map(normalize, args.testPaths)
+
+    import runxpcshelltests
+    xpcshell = runxpcshelltests.XPCShellTests(log=log)
+    return xpcshell.runTests(**vars(args))
+
+
+@CommandProvider
+class MochitestCommands(object):
+
+    def __init__(self, context):
+        self.context = context
+
+    @Command('xpcshell-test', category='testing',
+             description='Run the xpcshell harness.',
+             parser=parser_desktop)
+    def xpcshell(self, **kwargs):
+        return run_xpcshell(self.context, **kwargs)