zmake: enable default build directory for configure subcommand

Allow zmake to create a default build directory when running zmake
configure. This provides a similar behavior to platform/ec's make
system. Projects will be placed under platform/ec/build/zephyr/...

BRANCH=none
BUG=none
TEST=Added unit test
TEST=zmake configure -b zephyr/projects/volteer

Signed-off-by: Yuval Peress <peress@chromium.org>
Change-Id: Icabed1b77cf5876a75898322d39806237e05d520
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2665071
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/zephyr/zmake/tests/test_util.py b/zephyr/zmake/tests/test_util.py
new file mode 100644
index 0000000000..7d48dc15b2
--- /dev/null
+++ b/zephyr/zmake/tests/test_util.py
@@ -0,0 +1,51 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import hypothesis
+import hypothesis.strategies as st
+import pathlib
+import pytest
+
+import zmake.util as util
+
+
+# Strategies for use with hypothesis
+absolute_path = st.from_regex(regex=r"\A/\w+[\w/]*\Z")
+relative_path = st.from_regex(regex=r"\A\w+[\w/]*\Z")
+
+
+@hypothesis.given(absolute_path, relative_path, relative_path)
+def test_resolve_build_dir_with_build_dir(platform_ec_dir, project_subdir,
+                                          build_subdir):
+    platform_ec_dir = pathlib.PosixPath(platform_ec_dir)
+    build_dir = util.resolve_build_dir(
+        platform_ec_dir=platform_ec_dir,
+        project_dir=platform_ec_dir / project_subdir,
+        build_dir=platform_ec_dir / build_subdir)
+
+    assert build_dir == platform_ec_dir / build_subdir
+
+
+@hypothesis.given(absolute_path, relative_path)
+def test_resolve_build_dir_default_dir(platform_ec_dir, project_subdir):
+    platform_ec_dir = pathlib.PosixPath(platform_ec_dir)
+    build_dir = util.resolve_build_dir(
+        platform_ec_dir=platform_ec_dir,
+        project_dir=platform_ec_dir / project_subdir,
+        build_dir=None)
+    assert build_dir == platform_ec_dir / 'build' / project_subdir
+
+
+@hypothesis.given(absolute_path, relative_path)
+def test_resolve_build_dir_not_platform_ec_subdir(root_dir, sub_dir):
+    """In this case, the platform_ec_dir is a subdirectory of the project."""
+    root_dir = pathlib.PosixPath(root_dir)
+    try:
+        util.resolve_build_dir(
+            platform_ec_dir=root_dir / sub_dir,
+            project_dir=root_dir,
+            build_dir=None)
+        pytest.fail()
+    except Exception:
+        pass