package/python-transitions: new package

Lightweight finite state machine implementation in Python.

https://github.com/pytransitions/transitions

Signed-off-by: Vincent Cruz <mooz@blockos.org>
[Julien:
 - remove directory for LICENSE in hash file
 - remove PKG-INFO entry in hash file
]
Signed-off-by: Julien Olivain <ju.o@free.fr>

support/testing/tests/package/sample_python_transitions.py

@@ -0,0 +1,34 @@
+# test from https://github.com/pytransitions/transitions/blob/master/tests/test_nesting.py
+
+from transitions.extensions import HierarchicalMachine as Machine
+
+states = ['standing', 'walking', {'name': 'caffeinated', 'children': ['dithering', 'running']}]
+transitions = [
+  ['walk', 'standing', 'walking'],
+  ['stop', 'walking', 'standing'],
+  ['drink', 'caffeinated_dithering', '='],
+  ['drink', 'caffeinated', 'caffeinated_dithering'],
+  ['drink', '*', 'caffeinated'],
+  ['walk', 'caffeinated', 'caffeinated_running'],
+  ['relax', 'caffeinated', 'standing']
+]
+
+machine = Machine(states=states, transitions=transitions, initial='standing', ignore_invalid_triggers=True)
+
+machine.walk()   # Walking now
+machine.stop()   # let's stop for a moment
+machine.drink()  # coffee time
+machine.state
+print(machine.state)
+machine.drink()  # again!
+print(machine.state)
+machine.drink()  # and again!
+print(machine.state)
+machine.walk()   # we have to go faster
+print(machine.state)
+machine.stop()   # can't stop moving!
+machine.state
+print(machine.state)
+machine.relax()  # leave nested state
+machine.state    # phew, what a ride
+print(machine.state)

support/testing/tests/package/test_python_transitions.py

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+import os
+
+from tests.package.test_python import TestPythonPackageBase
+
+
+class TestPythonTransitions(TestPythonPackageBase):
+    __test__ = True
+    config = TestPythonPackageBase.config + \
+        """
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_TRANSITIONS=y
+        """
+    sample_scripts = ["tests/package/sample_python_transitions.py"]
+
+    def test_run(self):
+        self.login()
+        self.check_sample_scripts_exist()
+
+        cmd = self.interpreter + " " + os.path.basename(self.sample_scripts[0])
+        output, exit_code = self.emulator.run(cmd, timeout=15)
+        self.assertEqual(exit_code, 0)
+        self.assertEqual(output, [
+            'caffeinated',
+            'caffeinated_dithering',
+            'caffeinated_dithering',
+            'caffeinated_running',
+            'caffeinated_running',
+            'standing'
+        ])