[Buildroot] [PATCH 5/5] support/testing: add python-twisted tests

[Ricardo Martincoski]

Use a minimal script to listen to a port and check using netstat.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski at gmail.com>
Cc: Asaf Kahlon <asafka7 at gmail.com>
Cc: Yegor Yefremov <yegorslists at googlemail.com>
---
NOTICE that TestPythonPy3Twisted currently fails on master branch like this:
Cannot compile usr/lib/python3.7/site-packages/twisted/conch/manhole.py
Traceback (most recent call last):
  File "/builds/RicardoMartincoski/buildroot/test-output/TestPythonPy3Twisted/host/lib/python3.7/py_compile.py", line 136, in compile
    _optimize=optimize)
  File "<frozen importlib._bootstrap_external>", line 763, in source_to_code
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "usr/lib/python3.7/site-packages/twisted/conch/manhole.py", line 154
    def write(self, data, async=False):
                              ^
SyntaxError: invalid syntax
---
 .gitlab-ci.yml                                |  2 +
 .../tests/package/test_python_twisted.py      | 54 +++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 support/testing/tests/package/test_python_twisted.py

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ab3493686d..4b8fee5f23 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -305,6 +305,8 @@ tests.package.test_python_cryptography.TestPythonPy2Cryptography: *runtime_test
 tests.package.test_python_cryptography.TestPythonPy3Cryptography: *runtime_test
 tests.package.test_python_incremental.TestPythonPy2Incremental: *runtime_test
 tests.package.test_python_incremental.TestPythonPy3Incremental: *runtime_test
+tests.package.test_python_twisted.TestPythonPy2Twisted: *runtime_test
+tests.package.test_python_twisted.TestPythonPy3Twisted: *runtime_test
 tests.package.test_python_txaio.TestPythonPy2Txaio: *runtime_test
 tests.package.test_python_txaio.TestPythonPy3Txaio: *runtime_test
 tests.package.test_python_txtorcon.TestPythonPy2Txtorcon: *runtime_test
diff --git a/support/testing/tests/package/test_python_twisted.py b/support/testing/tests/package/test_python_twisted.py
new file mode 100644
index 0000000000..88de30edee
--- /dev/null
+++ b/support/testing/tests/package/test_python_twisted.py
@@ -0,0 +1,54 @@
+from tests.package.test_python import TestPythonBase
+
+TEST_SCRIPT = """
+from twisted.internet import protocol, reactor, endpoints
+class F(protocol.Factory):
+    pass
+endpoints.serverFromString(reactor, "tcp:1234").listen(F())
+reactor.run()
+"""
+
+
+class TestPythonTwisted(TestPythonBase):
+    def import_test(self):
+        cmd = "printf '{}' > test.py".format(TEST_SCRIPT)
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 0)
+
+        cmd = "netstat -ltn 2>/dev/null | grep 0.0.0.0:1234"
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 1)
+
+        cmd = self.interpreter + " test.py &"
+        # give some time to setup the server
+        cmd += "sleep 5"
+        _, exit_code = self.emulator.run(cmd, timeout=10)
+        self.assertEqual(exit_code, 0)
+
+        cmd = "netstat -ltn 2>/dev/null | grep 0.0.0.0:1234"
+        _, exit_code = self.emulator.run(cmd)
+        self.assertEqual(exit_code, 0)
+
+
+class TestPythonPy2Twisted(TestPythonTwisted):
+    config = TestPythonBase.config + \
+        """
+        BR2_PACKAGE_PYTHON=y
+        BR2_PACKAGE_PYTHON_TWISTED=y
+        """
+
+    def test_run(self):
+        self.login()
+        self.import_test()
+
+
+class TestPythonPy3Twisted(TestPythonTwisted):
+    config = TestPythonBase.config + \
+        """
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_TWISTED=y
+        """
+
+    def test_run(self):
+        self.login()
+        self.import_test()
-- 
2.17.1