1 files changed, 146 insertions, 0 deletions
diff --git a/testing/mozharness/test/test_mozilla_building_buildbase.py b/testing/mozharness/test/test_mozilla_building_buildbase.py
new file mode 100644
index 0000000000..483196d094
--- /dev/null
+++ b/testing/mozharness/test/test_mozilla_building_buildbase.py
@@ -0,0 +1,146 @@
+import os
+import unittest
+
+from mozharness.base.log import LogMixin
+from mozharness.base.script import ScriptMixin
+from mozharness.mozilla.building.buildbase import MozconfigPathError, get_mozconfig_path
+
+
+class FakeLogger(object):
+    def log_message(self, *args, **kwargs):
+        pass
+
+
+class FakeScriptMixin(LogMixin, ScriptMixin, object):
+    def __init__(self):
+        self.script_obj = self
+        self.log_obj = FakeLogger()
+
+
+class TestMozconfigPath(unittest.TestCase):
+    """
+    Tests for :func:`get_mozconfig_path`.
+    """
+
+    def test_path(self):
+        """
+        Passing just ``src_mozconfig`` gives that file in ``abs_src_dir``.
+        """
+        script = FakeScriptMixin()
+
+        abs_src_path = get_mozconfig_path(
+            script,
+            config={"src_mozconfig": "path/to/mozconfig"},
+            dirs={"abs_src_dir": "/src"},
+        )
+        self.assertEqual(abs_src_path, "/src/path/to/mozconfig")
+
+    def test_composite(self):
+        """
+        Passing ``app_name``, ``mozconfig_platform``, and ``mozconfig_variant``
+        find the file in the ``config/mozconfigs`` subdirectory of that app
+        directory.
+        """
+        script = FakeScriptMixin()
+
+        config = {
+            "app_name": "the-app",
+            "mozconfig_variant": "variant",
+            "mozconfig_platform": "platform9000",
+        }
+        abs_src_path = get_mozconfig_path(
+            script,
+            config=config,
+            dirs={"abs_src_dir": "/src"},
+        )
+        self.assertEqual(
+            abs_src_path,
+            "/src/the-app/config/mozconfigs/platform9000/variant",
+        )
+
+    def test_manifest(self):
+        """
+        Passing just ``src_mozconfig_manifest`` looks in that file in
+        ``abs_work_dir``, and finds the mozconfig file specified there in
+        ``abs_src_dir``.
+        """
+        script = FakeScriptMixin()
+
+        test_dir = os.path.dirname(__file__)
+        config = {"src_mozconfig_manifest": "helper_files/mozconfig_manifest.json"}
+        abs_src_path = get_mozconfig_path(
+            script,
+            config=config,
+            dirs={
+                "abs_src_dir": "/src",
+                "abs_work_dir": test_dir,
+            },
+        )
+        self.assertEqual(abs_src_path, "/src/path/to/mozconfig")
+
+    def test_errors(self):
+        script = FakeScriptMixin()
+
+        configs = [
+            # Not specifying any parts of a mozconfig path
+            {},
+            # Specifying both src_mozconfig and src_mozconfig_manifest
+            {"src_mozconfig": "path", "src_mozconfig_manifest": "path"},
+            # Specifying src_mozconfig with some or all of a composite
+            # mozconfig path
+            {
+                "src_mozconfig": "path",
+                "app_name": "app",
+                "mozconfig_platform": "platform",
+                "mozconfig_variant": "variant",
+            },
+            {
+                "src_mozconfig": "path",
+                "mozconfig_platform": "platform",
+                "mozconfig_variant": "variant",
+            },
+            {
+                "src_mozconfig": "path",
+                "app_name": "app",
+                "mozconfig_variant": "variant",
+            },
+            {
+                "src_mozconfig": "path",
+                "app_name": "app",
+                "mozconfig_platform": "platform",
+            },
+            # Specifying src_mozconfig_manifest with some or all of a composite
+            # mozconfig path
+            {
+                "src_mozconfig_manifest": "path",
+                "app_name": "app",
+                "mozconfig_platform": "platform",
+                "mozconfig_variant": "variant",
+            },
+            {
+                "src_mozconfig_manifest": "path",
+                "mozconfig_platform": "platform",
+                "mozconfig_variant": "variant",
+            },
+            {
+                "src_mozconfig_manifest": "path",
+                "app_name": "app",
+                "mozconfig_variant": "variant",
+            },
+            {
+                "src_mozconfig_manifest": "path",
+                "app_name": "app",
+                "mozconfig_platform": "platform",
+            },
+            # Specifying only some parts of a compsite mozconfig path
+            {"mozconfig_platform": "platform", "mozconfig_variant": "variant"},
+            {"app_name": "app", "mozconfig_variant": "variant"},
+            {"app_name": "app", "mozconfig_platform": "platform"},
+            {"app_name": "app"},
+            {"mozconfig_variant": "variant"},
+            {"mozconfig_platform": "platform"},
+        ]
+
+        for config in configs:
+            with self.assertRaises(MozconfigPathError):
+                get_mozconfig_path(script, config=config, dirs={})