test: add basic WebAssembly test

Tests a basic WebAssembly module that adds two numbers. wasm example from the WebAssembly/wabt repo licensed Apache 2.0. Refs: https://github.com/WebAssembly/wabt/blob/49b7984544ddaf14d5e2f1ad9115dad7e9a2b299/demo/wat2wasm/examples.js#L27-L32 PR-URL: #16760 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Myles Borins <[email protected]> Reviewed-By: Sakthipriyan Vairamani <[email protected]> Reviewed-By: Yuta Hiroto <[email protected]>
nodejs · Dec 11, 2017 · 113dd2b · 113dd2b
1 parent 6f805c6
commit 113dd2b
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diff --git a/test/.eslintrc.yaml b/test/.eslintrc.yaml
@@ -15,3 +15,7 @@ rules:
   inspector-check: error
   ## common module is mandatory in tests
   required-modules: [error, common]
+
+# Global scoped methods and vars
+globals:
+  WebAssembly: false
diff --git a/test/fixtures/test.wasm b/test/fixtures/test.wasm
diff --git a/test/parallel/test-wasm-simple.js b/test/parallel/test-wasm-simple.js
@@ -0,0 +1,18 @@
+'use strict';
+
+require('../common');
+
+const assert = require('assert');
+const fixtures = require('../common/fixtures');
+
+const buffer = fixtures.readSync('test.wasm');
+
+assert.ok(WebAssembly.validate(buffer), 'Buffer should be valid WebAssembly');
+
+WebAssembly.instantiate(buffer, {}).then((results) => {
+  assert.strictEqual(
+    results.instance.exports.addTwo(10, 20),
+    30,
+    'Exported function should add two numbers.',
+  );
+});