Add live profile playtest and input fixes

tests/profile_playtest_test.js

@@ -0,0 +1,65 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const path = require("node:path");
+
+require(path.join(
+  __dirname,
+  "..",
+  "src",
+  "switch_pico_bridge",
+  "web",
+  "profile_playtest.js"
+));
+
+const {
+  transformStick,
+  transformTrigger,
+  stickCoordinates,
+  triggerPercent,
+} = globalThis.ProfilePlaytestMath;
+
+const defaultStick = {
+  center_x: 0,
+  center_y: 0,
+  inner_deadzone: 0,
+  outer_saturation: 32767,
+  curve_q8_8: 256,
+  invert_x: false,
+  invert_y: false,
+};
+const defaultTrigger = {
+  lower_deadzone: 0,
+  upper_saturation: 65535,
+  curve_q8_8: 256,
+};
+
+assert.deepEqual(
+  transformStick({ x: -1234, y: 2345 }, defaultStick),
+  { x: -1234, y: 2345 }
+);
+assert.ok(stickCoordinates({ x: 0, y: 20000 }).top > 50,
+          "positive/down input must render below center");
+assert.ok(stickCoordinates({ x: 0, y: -20000 }).top < 50,
+          "negative/up input must render above center");
+assert.ok(stickCoordinates({ x: -20000, y: 0 }).left < 50,
+          "negative/left input must render left of center");
+assert.deepEqual(
+  transformStick(
+    { x: -1234, y: 2345 },
+    { ...defaultStick, inner_deadzone: 5000 }
+  ),
+  { x: 0, y: 0 }
+);
+assert.deepEqual(
+  transformStick(
+    { x: -30000, y: 30000 },
+    { ...defaultStick, curve_q8_8: 512 }
+  ),
+  { x: -27665, y: 27664 }
+);
+assert.equal(transformTrigger(65000, defaultTrigger), 65000);
+assert.ok(triggerPercent(65000) > 99,
+          "nonzero trigger input must produce a visible bar");
+assert.equal(triggerPercent(0), 0);
+assert.equal(triggerPercent(65535), 100);