1 files changed, 170 insertions, 0 deletions
diff --git a/taskcluster/taskgraph/test/test_parameters.py b/taskcluster/taskgraph/test/test_parameters.py
new file mode 100644
index 0000000000..ac138642f8
--- /dev/null
+++ b/taskcluster/taskgraph/test/test_parameters.py
@@ -0,0 +1,170 @@
+# 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 absolute_import, print_function, unicode_literals
+
+import unittest
+
+from taskgraph.parameters import (
+    Parameters,
+    load_parameters_file,
+)
+from mozunit import main, MockedOpen
+
+
+class TestParameters(unittest.TestCase):
+
+    vals = {
+        "app_version": "app_version",
+        "backstop": False,
+        "base_repository": "base_repository",
+        "build_date": 0,
+        "build_number": 0,
+        "do_not_optimize": [],
+        "existing_tasks": {},
+        "filters": [],
+        "head_ref": "head_ref",
+        "head_repository": "head_repository",
+        "head_rev": "head_rev",
+        "hg_branch": "hg_branch",
+        "level": "level",
+        "message": "message",
+        "moz_build_date": "moz_build_date",
+        "next_version": "next_version",
+        "optimize_strategies": None,
+        "optimize_target_tasks": False,
+        "owner": "owner",
+        "phabricator_diff": "phabricator_diff",
+        "project": "project",
+        "pushdate": 0,
+        "pushlog_id": "pushlog_id",
+        "release_enable_emefree": False,
+        "release_enable_partner_repack": False,
+        "release_enable_partner_attribution": False,
+        "release_eta": None,
+        "release_history": {},
+        "release_partners": [],
+        "release_partner_config": None,
+        "release_partner_build_number": 1,
+        "release_type": "release_type",
+        "release_product": None,
+        "required_signoffs": [],
+        "signoff_urls": {},
+        "target_tasks_method": "target_tasks_method",
+        "test_manifest_loader": "default",
+        "tasks_for": "tasks_for",
+        "try_mode": "try_mode",
+        "try_options": None,
+        "try_task_config": {},
+        "version": "version",
+    }
+
+    def test_Parameters_immutable(self):
+        p = Parameters(**self.vals)
+
+        def assign():
+            p["head_ref"] = 20
+
+        self.assertRaises(Exception, assign)
+
+    def test_Parameters_missing_KeyError(self):
+        p = Parameters(**self.vals)
+        self.assertRaises(KeyError, lambda: p["z"])
+
+    def test_Parameters_invalid_KeyError(self):
+        """even if the value is present, if it's not a valid property, raise KeyError"""
+        p = Parameters(xyz=10, strict=True, **self.vals)
+        self.assertRaises(Exception, lambda: p.check())
+
+    def test_Parameters_get(self):
+        p = Parameters(head_ref=10, level=20)
+        self.assertEqual(p["head_ref"], 10)
+
+    def test_Parameters_check(self):
+        p = Parameters(**self.vals)
+        p.check()  # should not raise
+
+    def test_Parameters_check_missing(self):
+        p = Parameters()
+        self.assertRaises(Exception, lambda: p.check())
+
+        p = Parameters(strict=False)
+        p.check()  # should not raise
+
+    def test_Parameters_check_extra(self):
+        p = Parameters(xyz=10, **self.vals)
+        self.assertRaises(Exception, lambda: p.check())
+
+        p = Parameters(strict=False, xyz=10, **self.vals)
+        p.check()  # should not raise
+
+    def test_load_parameters_file_yaml(self):
+        with MockedOpen({"params.yml": "some: data\n"}):
+            self.assertEqual(load_parameters_file("params.yml"), {"some": "data"})
+
+    def test_load_parameters_file_json(self):
+        with MockedOpen({"params.json": '{"some": "data"}'}):
+            self.assertEqual(load_parameters_file("params.json"), {"some": "data"})
+
+    def test_load_parameters_override(self):
+        """
+        When ``load_parameters_file`` is passed overrides, they are included in
+        the generated parameters.
+        """
+        self.assertEqual(
+            load_parameters_file("", overrides={"some": "data"}), {"some": "data"}
+        )
+
+    def test_load_parameters_override_file(self):
+        """
+        When ``load_parameters_file`` is passed overrides, they overwrite data
+        loaded from a file.
+        """
+        with MockedOpen({"params.json": '{"some": "data"}'}):
+            self.assertEqual(
+                load_parameters_file("params.json", overrides={"some": "other"}),
+                {"some": "other"},
+            )
+
+
+class TestCommParameters(unittest.TestCase):
+    vals = dict(
+        list(
+            {
+                "comm_base_repository": "comm_base_repository",
+                "comm_head_ref": "comm_head_ref",
+                "comm_head_repository": "comm_head_repository",
+                "comm_head_rev": "comm_head_rev",
+            }.items()
+        )
+        + list(TestParameters.vals.items())
+    )
+
+    def test_Parameters_check(self):
+        """
+        Specifying all of the gecko and comm parameters doesn't result in an error.
+        """
+        p = Parameters(**self.vals)
+        p.check()  # should not raise
+
+    def test_Parameters_check_missing(self):
+        """
+        If any of the comm parameters are specified, all of them must be specified.
+        """
+        vals = self.vals.copy()
+        del vals["comm_base_repository"]
+        p = Parameters(**vals)
+        self.assertRaises(Exception, p.check)
+
+    def test_Parameters_check_extra(self):
+        """
+        If parameters other than the global and comm parameters are specified,
+        an error is reported.
+        """
+        p = Parameters(extra="data", **self.vals)
+        self.assertRaises(Exception, p.check)
+
+
+if __name__ == "__main__":
+    main()