New test case: Paul's riddle, shortened (#1970)

This is discussed in https://github.com/KittyCAD/modeling-app/issues/1969

src/wasm-lib/tests/executor/inputs/riddle_small.kcl

@@ -0,0 +1,17 @@
+const ANSWER = 41803
+
+fn m = (s) => {
+  return (ANSWER * s + 12345) % 214748
+}
+
+let xs = 205804
+let ys = 71816
+  let ox = 35 - (m(xs) % 70)
+  let oy = 35 - (m(ys) % 70)
+  const r = startSketchOn('XZ')
+    |> startProfileAt([ox, oy], %)
+    |> line([1, 0], %)
+    |> line([0, -1], %)
+    |> line([-1, 0], %)
+    |> close(%)
+    |> extrude(1, %)

src/wasm-lib/tests/executor/main.rs

@@ -111,6 +111,15 @@ const part002 = startSketchOn(part001, "here")
         .unwrap();
     twenty_twenty::assert_image("tests/executor/outputs/sketch_on_face.png", &result, 0.999);
 }
+#[tokio::test(flavor = "multi_thread")]
+async fn serial_test_riddle_small() {
+    let code = include_str!("inputs/riddle_small.kcl");
+
+    let result = execute_and_snapshot(code, kittycad::types::UnitLength::Mm)
+        .await
+        .unwrap();
+    twenty_twenty::assert_image("tests/executor/outputs/riddle_small.png", &result, 0.999);
+}
 
 #[tokio::test(flavor = "multi_thread")]
 async fn serial_test_sketch_on_face_start() {