twister: package artifacts for testing

Package artifact for later use with --test-only.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

scripts/pylib/twister/twisterlib/environment.py

@@ -184,6 +184,11 @@ Artificially long but functional example:
         help="Generate artifacts for testing, do not attempt to run the"
               "code on targets.")
 
+    parser.add_argument(
+        "--package-artifacts",
+        help="Package artifacts needed for flashing in a file to be used with --test-only"
+        )
+
     test_or_build.add_argument(
         "--test-only", action="store_true",
         help="""Only run device tests with current artifacts, do not build

scripts/pylib/twister/twisterlib/package.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+# vim: set syntax=python ts=4 :
+# Copyright (c) 2020 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+import tarfile
+import json
+import os
+
+class Artifacts:
+
+    def __init__(self, env):
+        self.options = env.options
+
+    def make_tarfile(self, output_filename, source_dirs):
+        root = os.path.basename(self.options.outdir)
+        with tarfile.open(output_filename, "w:bz2") as tar:
+            tar.add("twister-out", recursive=False)
+            for d in source_dirs:
+                f = os.path.relpath(d, self.options.outdir)
+                tar.add(d, arcname=os.path.join(root, f))
+
+    def package(self):
+        dirs = []
+        with open(os.path.join(self.options.outdir, "twister.json"), "r") as json_test_plan:
+            jtp = json.load(json_test_plan)
+            for t in jtp['testsuites']:
+                if t['status'] != "filtered":
+                    dirs.append(os.path.join(self.options.outdir, t['platform'], t['name']))
+
+        dirs.extend(
+            [
+                os.path.join(self.options.outdir, "twister.json"),
+                os.path.join(self.options.outdir, "testplan.json")
+                ]
+            )
+        self.make_tarfile(self.options.package_artifacts, dirs)

scripts/twister

@@ -201,6 +201,7 @@ from twisterlib.reports import Reporting
 from twisterlib.hardwaremap import HardwareMap
 from twisterlib.coverage import run_coverage
 from twisterlib.runner import TwisterRunner
+from twisterlib.package import Artifacts
 
 logger = logging.getLogger('twister')
 logger.setLevel(logging.DEBUG)
@@ -398,6 +399,10 @@ def main():
                        options.platform_reports
                        )
 
+    if options.package_artifacts:
+        artifacts = Artifacts(env)
+        artifacts.package()
+
     logger.info("Run completed")
     if runner.results.failed or runner.results.error or (tplan.warnings and options.warnings_as_errors):
         return 1