Unit tests for send_statustext_msg function (#82)

* add unit tests for send_statustext_msg function

* Pylint

* Black

* Flake8

* Modify test_send_messages for oversized msg

* Separate valid and invalid messages

Author: hannatonthat

tests/integration/test_send_messages.py

@@ -23,7 +23,7 @@ def main() -> int:
         print("Failed to connect")
         return -1
 
-    messages = [  # 10 random messages
+    valid_messages = [  # 10 random valid messages
         "System startup",
         "Initializing sensors",
         "GPS lock acquired",
@@ -36,7 +36,24 @@ def main() -> int:
         "Landing sequence initiated",
     ]
 
-    for msg in messages:
+    invalid_messages = [  # 10 random invalid messages over 50 characters
+        "Warning: The current altitude exceeds the safe operating limit by a significant margin.",
+        "Critical error detected in navigation system — immediate manual override recommended.",
+        "Battery voltage has dropped below the minimum threshold required for safe flight operations.",
+        "GPS signal lost; attempting to reacquire connection. Flight path stability compromised.",
+        "Obstacle detected in the projected flight path. Automatic avoidance maneuver failed.",
+        "Telemetry link unstable. Real-time data transmission may be delayed or incomplete.",
+        "Motor synchronization fault detected. Recommend performing pre-flight diagnostics.",
+        "Excessive wind speeds detected at current altitude. Adjusting flight parameters.",
+        "Payload imbalance identified. Autonomous compensation may affect flight stability.",
+        "Firmware mismatch between flight controller and companion computer detected.",
+    ]
+
+    for msg in valid_messages:
+        controller.send_statustext_msg(msg, mavutil.mavlink.MAV_SEVERITY_INFO)
+        time.sleep(DELAY_TIME)
+
+    for msg in invalid_messages:
         controller.send_statustext_msg(msg, mavutil.mavlink.MAV_SEVERITY_INFO)
         time.sleep(DELAY_TIME)