tests: Use single keypress for manual test prompts.

Author: nedseb

tests/test_scenarios.py

@@ -17,6 +17,31 @@
 SCENARIOS_DIR = Path(__file__).parent / "scenarios"
 
 
+def _prompt_yes_no(prompt):
+    """Prompt user and wait for a single key: Enter=yes, Escape=no.
+
+    Returns True for yes, False for no.
+    """
+    import sys
+    print(f"  [MANUAL] {prompt} [Entree=oui / Echap=non] ", end="", flush=True)
+    try:
+        import tty
+        import termios
+        fd = sys.stdin.fileno()
+        old = termios.tcgetattr(fd)
+        try:
+            tty.setraw(fd)
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old)
+        print()  # newline after keypress
+        return ch in ("\r", "\n")
+    except (ImportError, OSError):
+        # Fallback for non-Unix or piped stdin
+        response = input("")
+        return response.strip().lower() != "n"
+
+
 def _print_result(result, test):
     """Print the measured value for report capture."""
     if isinstance(result, float):
@@ -108,8 +133,7 @@ def test_scenario(scenario, test, mode, port):
                 else:
                     print(f"  {label}: {value} {unit}")
             prompt = test.get("prompt", "Manual check")
-            response = input(f"  [MANUAL] {prompt} [y/n] ")
-            result = response.strip().lower() == "y"
+            result = _prompt_yes_no(prompt)
         elif action == "call":
             result = bridge.call_method(
                 scenario["driver"],