bitbake: bitbake: tests/siggen: introduce clean_basepath testcases

While discussing with Richard we thought these might help document
and safeguard the basic requirements of clean_basepath.

A 'bonus' performance testcase is added but commented out since its
runtime is long and test machine specific. It is intended for developers
to test before and after their changes to the target function as a due
diligence verification.

(Bitbake rev: ee41549f26952d5f7af19a9b3d8a8b969866e2ef)

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/bitbake-selftest

@@ -27,6 +27,7 @@ tests = ["bb.tests.codeparser",
          "bb.tests.parse",
          "bb.tests.persist_data",
          "bb.tests.runqueue",
+         "bb.tests.siggen",
          "bb.tests.utils",
          "hashserv.tests",
          "layerindexlib.tests.layerindexobj",

bitbake/lib/bb/tests/siggen.py

@@ -0,0 +1,91 @@
+#
+# BitBake Test for lib/bb/siggen.py
+#
+# Copyright (C) 2020 Jean-François Dagenais
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
+import unittest
+import logging
+import bb
+import time
+
+logger = logging.getLogger('BitBake.TestSiggen')
+
+import bb.siggen
+
+class SiggenTest(unittest.TestCase):
+
+    def test_clean_basepath_simple_target_basepath(self):
+        basepath = '/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask'
+        expected_cleaned = 'helloworld/helloworld_1.2.3.bb:do_sometask'
+
+        actual_cleaned = bb.siggen.clean_basepath(basepath)
+
+        self.assertEqual(actual_cleaned, expected_cleaned)
+
+    def test_clean_basepath_basic_virtual_basepath(self):
+        basepath = 'virtual:something:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask'
+        expected_cleaned = 'helloworld/helloworld_1.2.3.bb:do_sometask:virtual:something'
+
+        actual_cleaned = bb.siggen.clean_basepath(basepath)
+
+        self.assertEqual(actual_cleaned, expected_cleaned)
+
+    def test_clean_basepath_mc_basepath(self):
+        basepath = 'mc:somemachine:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask'
+        expected_cleaned = 'helloworld/helloworld_1.2.3.bb:do_sometask:mc:somemachine'
+
+        actual_cleaned = bb.siggen.clean_basepath(basepath)
+
+        self.assertEqual(actual_cleaned, expected_cleaned)
+
+    def test_clean_basepath_virtual_long_prefix_basepath(self):
+        basepath = 'virtual:something:A:B:C:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask'
+        expected_cleaned = 'helloworld/helloworld_1.2.3.bb:do_sometask:virtual:something:A:B:C'
+
+        actual_cleaned = bb.siggen.clean_basepath(basepath)
+
+        self.assertEqual(actual_cleaned, expected_cleaned)
+
+    def test_clean_basepath_mc_virtual_basepath(self):
+        basepath = 'mc:somemachine:virtual:something:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask'
+        expected_cleaned = 'helloworld/helloworld_1.2.3.bb:do_sometask:virtual:something:mc:somemachine'
+
+        actual_cleaned = bb.siggen.clean_basepath(basepath)
+
+        self.assertEqual(actual_cleaned, expected_cleaned)
+
+    def test_clean_basepath_mc_virtual_long_prefix_basepath(self):
+        basepath = 'mc:X:virtual:something:C:B:A:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask'
+        expected_cleaned = 'helloworld/helloworld_1.2.3.bb:do_sometask:virtual:something:C:B:A:mc:X'
+
+        actual_cleaned = bb.siggen.clean_basepath(basepath)
+
+        self.assertEqual(actual_cleaned, expected_cleaned)
+
+
+    # def test_clean_basepath_performance(self):
+    #     input_basepaths = [
+    #         'mc:X:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #         'mc:X:virtual:something:C:B:A:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #         'virtual:something:C:B:A:/different/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #         'virtual:something:A:/full/path/to/poky/meta/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #         '/this/is/most/common/input/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #         '/and/should/be/tested/with/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #         '/more/weight/recipes-whatever/helloworld/helloworld_1.2.3.bb:do_sometask',
+    #     ]
+
+    #     time_start = time.time()
+
+    #     i = 2000000
+    #     while i >= 0:
+    #         for basepath in input_basepaths:
+    #             bb.siggen.clean_basepath(basepath)
+    #         i -= 1
+
+    #     elapsed = time.time() - time_start
+    #     print('{} ({}s)'.format(self.id(), round(elapsed, 3)))
+
+    #     self.assertTrue(False)