west: west twister integration

Add twister command to west.

Signed-off-by: Al Semjonovs <asemjonovs@google.com>

scripts/west-commands.yml

@@ -15,6 +15,11 @@ west-commands:
       - name: build
         class: Build
         help: compile a Zephyr application
+  - file: scripts/west_commands/twister_cmd.py
+    commands:
+      - name: twister
+        class: Twister
+        help: west twister wrapper
   - file: scripts/west_commands/sign.py
     commands:
       - name: sign

scripts/west_commands/tests/test_twister.py

@@ -0,0 +1,53 @@
+# Copyright (c) 2023 Google Inc
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from argparse import Namespace
+
+from twister_cmd import Twister
+import pytest
+import argparse
+
+TEST_CASES = [
+    {
+        "r": [],
+        "c": False,
+        "test_only": False,
+    },
+    {
+        "r": ["-c", "-T tests/ztest/base"],
+        "c": True,
+        "T": [" tests/ztest/base"],
+        "test_only": False,
+    },
+    {
+        "r": ["--test-only"],
+        "c": False,
+        "test_only": True,
+    },
+]
+
+ARGS = Namespace(
+    help=None,
+    zephyr_base=None,
+    verbose=0,
+    command="twister",
+)
+
+
+@pytest.mark.parametrize("test_case", TEST_CASES)
+def test_parse_remainder(test_case):
+    twister = Twister()
+    parser = argparse.ArgumentParser(
+        description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter,
+        allow_abbrev=False
+    )
+    sub_p = parser.add_subparsers()
+
+    twister.parser = twister.do_add_parser(sub_p)
+    options = twister._parse_arguments(args=test_case["r"], options=None)
+
+    assert options.clobber_output == test_case["c"]
+    assert options.test_only == test_case["test_only"]
+    if "T" in test_case:
+        assert options.testsuite_root == test_case["T"]

scripts/west_commands/twister_cmd.py

@@ -0,0 +1,64 @@
+# Copyright (c) 2023 Google
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import argparse
+import os
+import sys
+
+from west import log
+from west.commands import WestCommand
+
+from zephyr_ext_common import ZEPHYR_SCRIPTS
+
+# Resolve path to twister libs and add imports
+twister_path = ZEPHYR_SCRIPTS
+os.environ["ZEPHYR_BASE"] = str(twister_path.parent)
+
+sys.path.insert(0, str(twister_path))
+sys.path.insert(0, str(twister_path / "pylib" / "twister"))
+
+from twisterlib.environment import add_parse_arguments, parse_arguments
+from twisterlib.twister_main import main
+
+TWISTER_DESCRIPTION = """\
+Convenience wrapper for twister. The below options are shared with the twister
+script and have the same effects as if you ran twister directly. Refer to the
+twister documentation for more information.
+"""
+
+
+class Twister(WestCommand):
+    def __init__(self):
+        super(Twister, self).__init__(
+            "twister",
+            # Keep this in sync with the string in west-commands.yml.
+            "west twister wrapper",
+            TWISTER_DESCRIPTION,
+            accepts_unknown_args=True,
+        )
+
+    def do_add_parser(self, parser_adder):
+        parser = parser_adder.add_parser(
+            self.name,
+            help=self.help,
+            formatter_class=argparse.RawDescriptionHelpFormatter,
+            description=self.description,
+            allow_abbrev=False
+        )
+
+        parser = add_parse_arguments(parser)
+
+        return parser
+
+    def do_run(self, args, remainder):
+        log.dbg(
+            "args: {} remainder: {}".format(args, remainder), level=log.VERBOSE_EXTREME
+        )
+
+        options = self._parse_arguments(args=remainder, options=args)
+        main(options)
+
+    def _parse_arguments(self, args, options):
+        """Helper function for testing purposes"""
+        return parse_arguments(self.parser, args, options)