test(input-mapper): cover the ShowPadStatus action

Its default is F9 alone, it is keyboard-only (mouse buttons and the
wheel are errors), serializes and imports like the other utility
actions, warns when another action takes F9 until it moves off, and no
other built-in input uses F9.

tools/input-mapper/tests/mapping.test.js

@@ -95,6 +95,21 @@ test('new utility actions import and round trip without accepting unsupported so
     }
 });
 
+test('ShowPadStatus is a keyboard-only action with an F9 default that conflicts like any built-in', () => {
+    assert.deepEqual(defaults.ShowPadStatus, ['KEY:F9']);
+    assert.deepEqual(typesForAction('ShowPadStatus'), ['KEY']);
+    assert.equal(serialize([binding('ShowPadStatus', 'KEY', 'F4')]), 'ShowPadStatus = KEY:F4\n');
+    assert.equal(serialize([binding(' showpadstatus ', 'key', 'f9')]), 'ShowPadStatus = KEY:F9\n');
+    for (const [type, value] of [['MOUSE', 'Left'], ['MOUSE', 'X2'], ['WHEEL', 'Up'], ['WHEEL', 'Down']]) {
+        assert.ok(validate([binding('ShowPadStatus', type, value)]).errors.length, `${type}:${value}`);
+    }
+    assert.equal(validate([binding('ShowPadStatus', 'KEY', 'F4')]).warnings.length, 0);
+    const shared = validate([binding('TogglePerformanceOverlay', 'KEY', 'F9')]);
+    assert.ok(shared.warnings.some(warning => warning.message.includes('TogglePerformanceOverlay and ShowPadStatus (built-in)')));
+    assert.equal(validate([binding('TogglePerformanceOverlay', 'KEY', 'F9'), binding('ShowPadStatus', 'KEY', 'F4')]).warnings.length, 0);
+    assert.ok(Object.values(defaults).flat().filter(source => source === 'KEY:F9').length === 1);
+});
+
 test('updated built-in inputs warn until their owning action is overridden', () => {
     for (const [action, type, value] of [['L2', 'KEY', 'R'], ['L2', 'MOUSE', 'X1'], ['ToggleMouse', 'KEY', 'F7'], ['Shake', 'KEY', 'X'], ['Screenshot', 'KEY', 'F12'], ['TogglePerformanceOverlay', 'KEY', 'F10'], ['ShowPadStatus', 'KEY', 'F9']]) {
         const input = binding('Cross', type, value);