test(colcon): configure our pkgs to use pytest

to ensure that the CI `colcon test` run works, because with a change to
python 3.12 the `unittest` standard library used by default with colcon
now exits with an error code of 5 for an empty test suite.

Additionally removed old ros 1 integration tests.

See: colcon/colcon-core#678
See: python/cpython#102051

Author: texhnolyze

package.xml

@@ -18,7 +18,7 @@
   <depend>bitbots_utils</depend>
   <depend>python3-cryptography</depend>
 
-  <test_depend>python3-hypothesis</test_depend>
+  <test_depend>python3-pytest</test_depend>
 
   <export>
     <bitbots_documentation>

setup.py

@@ -17,6 +17,7 @@
         "launch",
         "setuptools",
     ],
+    tests_require=["pytest"],
     zip_safe=True,
     keywords=["ROS"],
     license="MIT",

test/rostests/test_sender.launch

@@ -0,0 +1,9 @@
+from udp_bridge import aes_helper
+
+
+def test_decrypt_inverts_encrypt():
+    message = b"Hello, World!"
+    encrypted = aes_helper.AESCipher("key").encrypt(message)
+    decrypted = aes_helper.AESCipher("key").decrypt(encrypted)
+
+    assert message == decrypted