Put a copy of the wptrunner harness in-tree.

This is the same configuration as gecko and is convenient for making changes compared
to using releases from pypi

tests/wpt/harness/wptrunner/manifestexpected.py

@@ -0,0 +1,158 @@
+# 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/.
+
+import os
+import urlparse
+
+from wptmanifest.backends import static
+from wptmanifest.backends.static import ManifestItem
+
+import expected
+
+"""Manifest structure used to store expected results of a test.
+
+Each manifest file is represented by an ExpectedManifest that
+has one or more TestNode children, one per test in the manifest.
+Each TestNode has zero or more SubtestNode children, one for each
+known subtest of the test.
+"""
+
+def data_cls_getter(output_node, visited_node):
+    # visited_node is intentionally unused
+    if output_node is None:
+        return ExpectedManifest
+    if isinstance(output_node, ExpectedManifest):
+        return TestNode
+    if isinstance(output_node, TestNode):
+        return SubtestNode
+    raise ValueError
+
+
+class ExpectedManifest(ManifestItem):
+    def __init__(self, name, test_path, url_base):
+        """Object representing all the tests in a particular manifest
+
+        :param name: Name of the AST Node associated with this object.
+                     Should always be None since this should always be associated with
+                     the root node of the AST.
+        :param test_path: Path of the test file associated with this manifest.
+        :param url_base: Base url for serving the tests in this manifest
+        """
+        if name is not None:
+            raise ValueError("ExpectedManifest should represent the root node")
+        if test_path is None:
+            raise ValueError("ExpectedManifest requires a test path")
+        if url_base is None:
+            raise ValueError("ExpectedManifest requires a base url")
+        ManifestItem.__init__(self, name)
+        self.child_map = {}
+        self.test_path = test_path
+        self.url_base = url_base
+
+    def append(self, child):
+        """Add a test to the manifest"""
+        ManifestItem.append(self, child)
+        self.child_map[child.id] = child
+
+    def _remove_child(self, child):
+        del self.child_map[child.id]
+        ManifestItem.remove_child(self, child)
+        assert len(self.child_map) == len(self.children)
+
+    def get_test(self, test_id):
+        """Get a test from the manifest by ID
+
+        :param test_id: ID of the test to return."""
+        return self.child_map.get(test_id)
+
+    @property
+    def url(self):
+        return urlparse.urljoin(self.url_base,
+                                "/".join(self.test_path.split(os.path.sep)))
+
+
+class TestNode(ManifestItem):
+    def __init__(self, name):
+        """Tree node associated with a particular test in a manifest
+
+        :param name: name of the test"""
+        assert name is not None
+        ManifestItem.__init__(self, name)
+        self.updated_expected = []
+        self.new_expected = []
+        self.subtests = {}
+        self.default_status = None
+        self._from_file = True
+
+    @property
+    def is_empty(self):
+        required_keys = set(["type"])
+        if set(self._data.keys()) != required_keys:
+            return False
+        return all(child.is_empty for child in self.children)
+
+    @property
+    def test_type(self):
+        return self.get("type")
+
+    @property
+    def id(self):
+        return urlparse.urljoin(self.parent.url, self.name)
+
+    def disabled(self):
+        """Boolean indicating whether the test is disabled"""
+        try:
+            return self.get("disabled")
+        except KeyError:
+            return False
+
+    def append(self, node):
+        """Add a subtest to the current test
+
+        :param node: AST Node associated with the subtest"""
+        child = ManifestItem.append(self, node)
+        self.subtests[child.name] = child
+
+    def get_subtest(self, name):
+        """Get the SubtestNode corresponding to a particular subtest, by name
+
+        :param name: Name of the node to return"""
+        if name in self.subtests:
+            return self.subtests[name]
+        return None
+
+
+class SubtestNode(TestNode):
+    def __init__(self, name):
+        """Tree node associated with a particular subtest in a manifest
+
+        :param name: name of the subtest"""
+        TestNode.__init__(self, name)
+
+    @property
+    def is_empty(self):
+        if self._data:
+            return False
+        return True
+
+
+def get_manifest(metadata_root, test_path, url_base, run_info):
+    """Get the ExpectedManifest for a particular test path, or None if there is no
+    metadata stored for that test path.
+
+    :param metadata_root: Absolute path to the root of the metadata directory
+    :param test_path: Path to the test(s) relative to the test root
+    :param url_base: Base url for serving the tests in this manifest
+    :param run_info: Dictionary of properties of the test run for which the expectation
+                     values should be computed.
+    """
+    manifest_path = expected.expected_path(metadata_root, test_path)
+    try:
+        with open(manifest_path) as f:
+            return static.compile(f, run_info,
+                                  data_cls_getter=data_cls_getter,
+                                  test_path=test_path,
+                                  url_base=url_base)
+    except IOError:
+        return None