Bug 1193215 - Support for passing test directories through mach try.

This adds support for web-platform-tests to mach try. It changes the implementation
so that instead of passing paths to manifests, the user passes arbitary paths in the
source tree, and tests under that path are run, with test discovery mainly left to
the harness.

testing/mach_commands.py

@@ -436,6 +436,9 @@ def run_jsapitests(self, **params):
 
         return jsapi_tests_result
 
+def autotry_parser():
+    from autotry import parser
+    return parser()
 
 @CommandProvider
 class PushToTry(MachCommandBase):
@@ -448,6 +451,18 @@ def validate_args(self, paths, tests, tags, builds, platforms):
         if platforms is None:
             platforms = os.environ['AUTOTRY_PLATFORM_HINT']
 
+        rv_platforms = []
+        for item in platforms:
+            for platform in item.split(","):
+                if platform:
+                    rv_platforms.append(platform)
+
+        rv_tests = []
+        for item in tests:
+            for test in item.split(","):
+                if test:
+                    rv_tests.append(test)
+
         for p in paths:
             p = os.path.normpath(os.path.abspath(p))
             if not p.startswith(self.topsrcdir):
@@ -459,97 +474,102 @@ def validate_args(self, paths, tests, tags, builds, platforms):
                       ' select all tests.' % p)
                 sys.exit(1)
 
-        return builds, platforms
-
-    @Command('try', category='testing', description='Push selected tests to the try server')
-    @CommandArgument('paths', nargs='*', help='Paths to search for tests to run on try.')
-    @CommandArgument('-n', dest='verbose', action='store_true', default=False,
-                     help='Print detailed information about the resulting test selection '
-                          'and commands performed.')
-    @CommandArgument('-p', dest='platforms', required='AUTOTRY_PLATFORM_HINT' not in os.environ,
-                     help='Platforms to run. (required if not found in the environment)')
-    @CommandArgument('-u', dest='tests',
-                     help='Test jobs to run. These will be used in place of suites '
-                          'determined by test paths, if any.')
-    @CommandArgument('--extra', dest='extra_tests',
-                     help='Additional tests to run. These will be added to suites '
-                          'determined by test paths, if any.')
-    @CommandArgument('-b', dest='builds', default='do',
-                     help='Build types to run (d for debug, o for optimized)')
-    @CommandArgument('--tag', dest='tags', action='append',
-                     help='Restrict tests to the given tag (may be specified multiple times)')
-    @CommandArgument('--no-push', dest='push', action='store_false',
-                     help='Do not push to try as a result of running this command (if '
-                          'specified this command will only print calculated try '
-                          'syntax and selection info).')
+        return builds, rv_platforms, rv_tests
+
+    @Command('try',
+             category='testing',
+             description='Push selected tests to the try server',
+             parser=autotry_parser)
     def autotry(self, builds=None, platforms=None, paths=None, verbose=None,
-                extra_tests=None, push=None, tags=None, tests=None):
-        """mach try is under development, please file bugs blocking 1149670.
+                push=None, tags=None, tests=None, extra_args=None, intersection=False):
+        """Autotry is in beta, please file bugs blocking 1149670.
+
+        Push the current tree to try, with the specified syntax.
+
+        Build options, platforms and regression tests may be selected
+        using the usual try options (-b, -p and -u respectively). In
+        addition, tests in a given directory may be automatically
+        selected by passing that directory as a positional argument to the
+        command. For example:
+
+        mach try -b d -p linux64 dom testing/web-platform/tests/dom
+
+        would schedule a try run for linux64 debug consisting of all
+        tests under dom/ and testing/web-platform/tests/dom.
+
+        Test selection using positional arguments is available for
+        mochitests, reftests, xpcshell tests and web-platform-tests.
+
+        Tests may be also filtered by passing --tag to the command,
+        which will run only tests marked as having the specified
+        tags e.g.
 
-        Pushes the specified tests to try. The simplest way to specify tests is
-        by using the -u argument, which will behave as usual for try syntax.
-        This command also provides a mechanism to select test jobs and tests
-        within a job by path based on tests present in the tree under that
-        path. Mochitests, xpcshell tests, and reftests are eligible for
-        selection by this mechanism. Selected tests will be run in a single
-        chunk of the relevant suite, at this time in chunk 1.
+        mach try -b d -p win64 --tag media
 
-        Specifying platforms is still required with the -p argument (a default
-        is taken from the AUTOTRY_PLATFORM_HINT environment variable if set).
+        would run all tests tagged 'media' on Windows 64.
 
-        Tests may be further filtered by passing one or more --tag to the
-        command. If one or more --tag is specified with out paths or -u,
-        tests with the given tags will be run in a single chunk of
-        applicable suites.
+        If both positional arguments or tags and -u are supplied, the
+        suites in -u will be run in full. Where tests are selected by
+        positional argument they will be run in a single chunk.
 
-        To run suites in addition to those determined from the tree, they
-        can be passed to the --extra arguent.
+        If no build option is selected, both debug and opt will be
+        scheduled. If no platform is selected a default is taken from
+        the AUTOTRY_PLATFORM_HINT environment variable, if set.
 
         The command requires either its own mercurial extension ("push-to-try",
         installable from mach mercurial-setup) or a git repo using git-cinnabar
         (available at https://github.com/glandium/git-cinnabar).
+
         """
 
         from mozbuild.testing import TestResolver
         from mozbuild.controller.building import BuildDriver
         from autotry import AutoTry
-        import pprint
-
         print("mach try is under development, please file bugs blocking 1149670.")
 
-        builds, platforms = self.validate_args(paths, tests, tags, builds, platforms)
+        if tests is None:
+            tests = []
+
+        builds, platforms, tests = self.validate_args(paths, tests, tags, builds, platforms)
         resolver = self._spawn(TestResolver)
 
         at = AutoTry(self.topsrcdir, resolver, self._mach_context)
-        if at.find_uncommited_changes():
+        if push and at.find_uncommited_changes():
             print('ERROR please commit changes before continuing')
             sys.exit(1)
 
         if paths or tags:
             driver = self._spawn(BuildDriver)
             driver.install_tests(remove=False)
 
-        manifests_by_flavor = at.resolve_manifests(paths=paths, tags=tags)
+            paths = [os.path.relpath(os.path.normpath(os.path.abspath(item)), self.topsrcdir)
+                     for item in paths]
+            paths_by_flavor = at.paths_by_flavor(paths=paths, tags=tags)
 
-        if not manifests_by_flavor and not tests:
-            print("No tests were found when attempting to resolve paths:\n\n\t%s" %
-                  paths)
-            sys.exit(1)
+            if not paths_by_flavor and not tests:
+                print("No tests were found when attempting to resolve paths:\n\n\t%s" %
+                      paths)
+                sys.exit(1)
 
-        all_manifests = set()
-        for m in manifests_by_flavor.values():
-            all_manifests |= m
-        all_manifests = list(all_manifests)
+            if not intersection:
+                paths_by_flavor = at.remove_duplicates(paths_by_flavor, tests)
+        else:
+            paths_by_flavor = {}
 
-        msg = at.calc_try_syntax(platforms, manifests_by_flavor.keys(), tests,
-                                 extra_tests, builds, all_manifests, tags)
+        try:
+            msg = at.calc_try_syntax(platforms, tests, builds, paths_by_flavor, tags,
+                                     extra_args, intersection)
+        except ValueError as e:
+            print(e.message)
+            sys.exit(1)
 
-        if verbose and manifests_by_flavor:
-            print('Tests from the following manifests will be selected: ')
-            pprint.pprint(manifests_by_flavor)
+        if verbose and paths_by_flavor:
+            print('The following tests will be selected: ')
+            for flavor, paths in paths_by_flavor.iteritems():
+                print("%s: %s" % (flavor, ",".join(paths)))
 
         if verbose or not push:
-            print('The following try syntax was calculated:\n\n\t%s\n' % msg)
+            print('The following try syntax was calculated:\n%s' % msg)
 
         if push:
             at.push_to_try(msg, verbose)

testing/mozharness/configs/b2g/emulator_automation_config.py

@@ -118,8 +118,8 @@
                 "--log-errorsummary=%(error_summary_file)s",
                 "--certificate-path=%(certificate_path)s",
                 "--screenshot-on-fail",
-                "%(test_path)s"
             ],
+            "tests": ["%(test_path)s"],
             "run_filename": "runtestsb2g.py",
             "testsdir": "mochitest"
         },
@@ -142,8 +142,8 @@
                 "--log-errorsummary=%(error_summary_file)s",
                 "--certificate-path=%(certificate_path)s",
                 "--screenshot-on-fail",
-                "%(test_path)s"
             ],
+            "tests": ["%(test_path)s"],
             "run_filename": "runtestsb2g.py",
             "testsdir": "mochitest"
         },

testing/mozharness/configs/unittests/linux_unittest.py

@@ -256,7 +256,7 @@
         },
     },
     "all_cppunittest_suites": {
-        "cppunittest": ["tests/cppunittest"]
+        "cppunittest": {"tests": ["tests/cppunittest"]}
     },
     "all_gtest_suites": {
         "gtest": []

testing/mozharness/mozharness/mozilla/testing/testbase.py

@@ -26,7 +26,7 @@
 from mozharness.mozilla.structuredlog import StructuredOutputParser
 from mozharness.mozilla.taskcluster_helper import TaskClusterArtifactFinderMixin
 from mozharness.mozilla.testing.unittest import DesktopUnittestOutputParser
-from mozharness.mozilla.testing.try_tools import TryToolsMixin
+from mozharness.mozilla.testing.try_tools import TryToolsMixin, try_config_options
 from mozharness.mozilla.tooltool import TooltoolMixin
 
 from mozharness.lib.python.authentication import get_credentials
@@ -83,7 +83,7 @@
      "choices": ['ondemand', 'true'],
      "help": "Download and extract crash reporter symbols.",
       }],
-] + copy.deepcopy(virtualenv_config_options)
+] + copy.deepcopy(virtualenv_config_options) + copy.deepcopy(try_config_options)
 
 
 # TestingMixin {{{1
@@ -676,6 +676,35 @@ def query_minidump_stackwalk(self):
 
         return self.minidump_stackwalk_path
 
+    def query_options(self, *args, **kwargs):
+        if "str_format_values" in kwargs:
+            str_format_values = kwargs.pop("str_format_values")
+        else:
+            str_format_values = {}
+
+        arguments = []
+
+        for arg in args:
+            if arg is not None:
+                arguments.extend(argument % str_format_values for argument in arg)
+
+        return arguments
+
+    def query_tests_args(self, *args, **kwargs):
+        if "str_format_values" in kwargs:
+            str_format_values = kwargs.pop("str_format_values")
+        else:
+            str_format_values = {}
+
+        arguments = []
+
+        for arg in reversed(args):
+            if arg:
+                arguments.append("--")
+                arguments.extend(argument % str_format_values for argument in arg)
+                break
+
+        return arguments
 
     def _run_cmd_checks(self, suites):
         if not suites: