Get imports working in a basic capacity

2025-06-12 12:31:22 +00:00 · 2017-12-18 21:43:16 -08:00
parent 1ffcb90d2d
commit eda9beae25
7 changed files with 319 additions and 48 deletions
--- a/tests/imports.rs
+++ b/tests/imports.rs
@ -0,0 +1,59 @@
+extern crate test_support;
+
+#[test]
+fn simple() {
+    test_support::project()
+        .file("src/lib.rs", r#"
+            #![feature(proc_macro)]
+
+            extern crate wasm_bindgen;
+
+            use wasm_bindgen::prelude::*;
+
+            wasm_bindgen! {
+                extern "JS" {
+                    fn foo(s: &str);
+                    fn another(a: u32) -> i32;
+                }
+                pub fn bar(s: &str) {
+                    foo(s);
+                }
+                pub fn another_thunk(a: u32) -> i32 {
+                    another(a)
+                }
+            }
+        "#)
+        .file("test.js", r#"
+            import * as assert from "assert";
+
+            let ARG = null;
+            let ANOTHER_ARG = null;
+
+            export const imports = {
+                env: {
+                    foo(s) {
+                        assert.strictEqual(ARG, null);
+                        assert.strictEqual(s, "foo");
+                        ARG = s;
+                    },
+                    another(s) {
+                        assert.strictEqual(ANOTHER_ARG, null);
+                        assert.strictEqual(s, 21);
+                        ANOTHER_ARG = s;
+                        return 35;
+                    },
+                },
+            };
+
+            export function test(wasm) {
+                assert.strictEqual(ARG, null);
+                wasm.bar("foo");
+                assert.strictEqual(ARG, "foo");
+
+                assert.strictEqual(ANOTHER_ARG, null);
+                assert.strictEqual(wasm.another_thunk(21), 35);
+                assert.strictEqual(ANOTHER_ARG, 21);
+            }
+        "#)
+        .test();
+}