Start end for sketch on face (#1406)

* updates

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* add tests

Signed-off-by: Jess Frazelle <github@jessfraz.com>

* clippy

Signed-off-by: Jess Frazelle <github@jessfraz.com>

---------

Signed-off-by: Jess Frazelle <github@jessfraz.com>

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

@@ -91,6 +91,62 @@ const part002 = startSketchOn(part001, "here")
     twenty_twenty::assert_image("tests/executor/outputs/sketch_on_face.png", &result, 0.999);
 }
 
+#[tokio::test(flavor = "multi_thread")]
+async fn serial_test_sketch_on_face_start() {
+    let code = r#"fn cube = (pos, scale) => {
+  const sg = startSketchOn('XY')
+    |> startProfileAt(pos, %)
+    |> line([0, scale], %)
+    |> line([scale, 0], %)
+    |> line([0, -scale], %)
+
+  return sg
+}
+const part001 = cube([0,0], 20)
+    |> close(%)
+    |> extrude(20, %)
+
+const part002 = startSketchOn(part001, "start")
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %)
+  |> line([10, 0], %)
+  |> line([0, -10], %)
+  |> close(%)
+  |> extrude(5, %)
+"#;
+
+    let result = execute_and_snapshot(code).await.unwrap();
+    twenty_twenty::assert_image("tests/executor/outputs/sketch_on_face_start.png", &result, 0.999);
+}
+
+#[tokio::test(flavor = "multi_thread")]
+async fn serial_test_sketch_on_face_end() {
+    let code = r#"fn cube = (pos, scale) => {
+  const sg = startSketchOn('XY')
+    |> startProfileAt(pos, %)
+    |> line([0, scale], %)
+    |> line([scale, 0], %)
+    |> line([0, -scale], %)
+
+  return sg
+}
+const part001 = cube([0,0], 20)
+    |> close(%)
+    |> extrude(20, %)
+
+const part002 = startSketchOn(part001, "END")
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %)
+  |> line([10, 0], %)
+  |> line([0, -10], %)
+  |> close(%)
+  |> extrude(5, %)
+"#;
+
+    let result = execute_and_snapshot(code).await.unwrap();
+    twenty_twenty::assert_image("tests/executor/outputs/sketch_on_face_end.png", &result, 0.999);
+}
+
 #[tokio::test(flavor = "multi_thread")]
 async fn serial_test_execute_with_function_sketch() {
     let code = r#"fn box = (h, l, w) => {