Vendor dependencies

Let's see how I like this workflow.

vendor/wasm-bindgen/tests/wasm/enums.rs

@@ -0,0 +1,97 @@
+use self::inner::ColorWithCustomValues;
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_test::*;
+
+#[wasm_bindgen(module = "tests/wasm/enums.js")]
+extern "C" {
+    fn js_c_style_enum();
+    fn js_c_style_enum_with_custom_values();
+    fn js_handle_optional_enums(x: Option<Color>) -> Option<Color>;
+    fn js_expect_enum(x: Color, y: Option<Color>);
+    fn js_expect_enum_none(x: Option<Color>);
+    fn js_renamed_enum(b: RenamedEnum);
+}
+
+#[wasm_bindgen]
+#[derive(PartialEq, Debug)]
+pub enum Color {
+    Green,
+    Yellow,
+    Red,
+}
+
+pub mod inner {
+    use wasm_bindgen::prelude::*;
+
+    #[wasm_bindgen]
+    pub enum ColorWithCustomValues {
+        Green = 21,
+        Yellow = 34,
+        Red = 2,
+    }
+}
+
+#[wasm_bindgen(js_name = JsRenamedEnum)]
+#[derive(Copy, Clone)]
+pub enum RenamedEnum {
+    A = 10,
+    B = 20,
+}
+
+#[wasm_bindgen]
+pub fn enum_cycle(color: Color) -> Color {
+    match color {
+        Color::Green => Color::Yellow,
+        Color::Yellow => Color::Red,
+        Color::Red => Color::Green,
+    }
+}
+
+#[wasm_bindgen]
+pub fn enum_with_custom_values_cycle(color: ColorWithCustomValues) -> ColorWithCustomValues {
+    match color {
+        ColorWithCustomValues::Green => ColorWithCustomValues::Yellow,
+        ColorWithCustomValues::Yellow => ColorWithCustomValues::Red,
+        ColorWithCustomValues::Red => ColorWithCustomValues::Green,
+    }
+}
+
+#[wasm_bindgen_test]
+fn c_style_enum() {
+    js_c_style_enum();
+}
+
+#[wasm_bindgen_test]
+fn c_style_enum_with_custom_values() {
+    js_c_style_enum_with_custom_values();
+}
+
+#[wasm_bindgen]
+pub fn handle_optional_enums(x: Option<Color>) -> Option<Color> {
+    x
+}
+
+#[wasm_bindgen_test]
+fn test_optional_enums() {
+    use self::Color::*;
+
+    assert_eq!(js_handle_optional_enums(None), None);
+    assert_eq!(js_handle_optional_enums(Some(Green)), Some(Green));
+    assert_eq!(js_handle_optional_enums(Some(Yellow)), Some(Yellow));
+    assert_eq!(js_handle_optional_enums(Some(Red)), Some(Red));
+}
+
+#[wasm_bindgen_test]
+fn test_optional_enum_values() {
+    use self::Color::*;
+
+    js_expect_enum(Green, Some(Green));
+    js_expect_enum(Yellow, Some(Yellow));
+    js_expect_enum(Red, Some(Red));
+    js_expect_enum_none(None);
+}
+
+#[wasm_bindgen_test]
+fn test_renamed_enum() {
+    js_renamed_enum(RenamedEnum::B);
+}