Move unused_imports_not_generated test to wasm

tests/all/imports.rs

@@ -1,41 +1,5 @@
 use super::project;
 
-#[test]
-fn unused_imports_not_generated() {
-    let mut project = project();
-
-    project
-        .debug(false)
-        .file("src/lib.rs", r#"
-            #![feature(use_extern_macros)]
-
-            extern crate wasm_bindgen;
-
-            use wasm_bindgen::prelude::*;
-
-            #[wasm_bindgen]
-            extern {
-                pub fn foo();
-            }
-
-            #[wasm_bindgen]
-            pub fn run() {
-            }
-        "#)
-        .file("test.js", r#"
-            import { run } from "./out";
-
-            export function test() {
-                run();
-            }
-        "#)
-        .test();
-
-    let contents = project.read_js();
-    assert!(contents.contains("run"), "didn't find `run` in {}", contents);
-    assert!(!contents.contains("foo"), "found `foo` in {}", contents);
-}
-
 #[test]
 fn versions() {
     project()

tests/wasm/imports.js

@@ -1,5 +1,6 @@
 const assert = require('assert');
 const wasm = require('wasm-bindgen-test');
+const fs = require('fs');
 
 let ARG = null;
 let ANOTHER_ARG = null;
@@ -93,3 +94,9 @@ exports.interpret_2_as_custom_type = function() {
 
 exports.baz$ = function() {};
 exports.$foo = 1.0;
+
+exports.assert_dead_import_not_generated = function() {
+  const filename = require.resolve("wasm-bindgen-test");
+  const bindings = fs.readFileSync(filename);
+  assert.ok(!bindings.includes("unused_import"));
+};

tests/wasm/imports.rs

@@ -47,6 +47,9 @@ extern {
     fn renamed_with_dollar_sign();
     #[wasm_bindgen(js_name = "$foo")]
     static RENAMED: JsValue;
+
+    fn unused_import();
+    fn assert_dead_import_not_generated();
 }
 
 #[wasm_bindgen]
@@ -168,3 +171,8 @@ fn rename_with_string() {
 fn rename_static_with_string() {
     assert_eq!(RENAMED.as_f64(), Some(1.0));
 }
+
+#[wasm_bindgen_test]
+fn dead_imports_not_generated() {
+    assert_dead_import_not_generated();
+}