1 files changed, 69 insertions, 0 deletions
diff --git a/python/mozbuild/mozbuild/test/common.py b/python/mozbuild/mozbuild/test/common.py
new file mode 100644
index 0000000000..47f04a8dd3
--- /dev/null
+++ b/python/mozbuild/mozbuild/test/common.py
@@ -0,0 +1,69 @@
+# 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 errno
+import os
+import shutil
+
+import mozpack.path as mozpath
+from buildconfig import topsrcdir
+from mach.logging import LoggingManager
+
+from mozbuild.util import ReadOnlyDict
+
+# By including this module, tests get structured logging.
+log_manager = LoggingManager()
+log_manager.add_terminal_logging()
+
+
+def prepare_tmp_topsrcdir(path):
+    for p in (
+        "build/autoconf/config.guess",
+        "build/autoconf/config.sub",
+        "build/moz.configure/checks.configure",
+        "build/moz.configure/init.configure",
+        "build/moz.configure/util.configure",
+    ):
+        file_path = os.path.join(path, p)
+        try:
+            os.makedirs(os.path.dirname(file_path))
+        except OSError as e:
+            if e.errno != errno.EEXIST:
+                raise
+        shutil.copy(os.path.join(topsrcdir, p), file_path)
+
+
+# mozconfig is not a reusable type (it's actually a module) so, we
+# have to mock it.
+class MockConfig(object):
+    def __init__(
+        self,
+        topsrcdir="/path/to/topsrcdir",
+        extra_substs={},
+        error_is_fatal=True,
+    ):
+        self.topsrcdir = mozpath.abspath(topsrcdir)
+        self.topobjdir = mozpath.abspath("/path/to/topobjdir")
+
+        self.substs = ReadOnlyDict(
+            {
+                "MOZ_FOO": "foo",
+                "MOZ_BAR": "bar",
+                "MOZ_TRUE": "1",
+                "MOZ_FALSE": "",
+                "DLL_PREFIX": "lib",
+                "DLL_SUFFIX": ".so",
+            },
+            **extra_substs
+        )
+
+        self.defines = self.substs
+
+        self.lib_prefix = "lib"
+        self.lib_suffix = ".a"
+        self.import_prefix = "lib"
+        self.import_suffix = ".so"
+        self.dll_prefix = "lib"
+        self.dll_suffix = ".so"
+        self.error_is_fatal = error_is_fatal