wipe micropython device before tests

Author: pavelrevak

.github/workflows/micropython.yml

@@ -17,6 +17,7 @@ jobs:
         run: |
           $HOME/actions-runner/.venv/bin/pip install -e .
           $HOME/actions-runner/.venv/bin/pip install uhttp-client
+          $HOME/actions-runner/.venv/bin/pip install 'mpytool>=2.4.0'
 
       - name: MicroPython tests (${{ matrix.device }})
         run: |

.github/workflows/tests.yml

@@ -65,6 +65,7 @@ jobs:
         run: |
           $HOME/actions-runner/.venv/bin/pip install -e .
           $HOME/actions-runner/.venv/bin/pip install uhttp-client
+          $HOME/actions-runner/.venv/bin/pip install 'mpytool>=2.4.0'
 
       - name: MicroPython tests (${{ matrix.device }})
         run: |

tests/test_mpy_integration.py

@@ -109,15 +109,10 @@ def setUpClass(cls):
         cls.conn = mpytool.ConnSerial(port=PORT, baudrate=115200)
         cls.mpy = mpytool.Mpy(cls.conn)
 
-        # Soft reset to clear any previous state
-        cls.mpy.stop()
-        try:
-            cls.conn.write(b'\x03\x03\x04')  # Ctrl-C twice + Ctrl-D
-            time.sleep(2)
-            cls.conn.read_all()
-        except Exception:
-            pass
-        cls.mpy.stop()
+        # Wipe filesystem and machine-reset to drop any leftover state
+        # (open sockets, WiFi, mounted VFS, files) from a previous run.
+        # Soft reset alone does not free runtime resources.
+        cls.mpy.wipe()
 
         # Mount server module with mpy-cross compilation
         server_dir = Path(__file__).parent.parent / 'uhttp'