[wasm] Compile and Instantiation

test/mjsunit/wasm/instantiate-module-basic.js

Index: test/mjsunit/wasm/instantiate-module-basic.js
diff --git a/test/mjsunit/wasm/instantiate-module-basic.js b/test/mjsunit/wasm/instantiate-module-basic.js
index 72a3425c906de342f569d108b40871c6fae6807b..d9712e66af5a0e531add7ed83a2cd30a9422e61b 100644
--- a/test/mjsunit/wasm/instantiate-module-basic.js
+++ b/test/mjsunit/wasm/instantiate-module-basic.js
@@ -58,3 +58,17 @@ CheckInstance(new WebAssembly.Instance(module));
 
 let promise = WebAssembly.compile(buffer);
 promise.then(module => CheckInstance(new WebAssembly.Instance(module)));
+
+// Negative tests.

[rossberg, 2016/07/04 10:04:00]

We should probably have a few new positive tests, too. For example, testing that
instantiating the same module several times works correctly.

[Mircea Trofin, 2016/07/05 06:02:43]

True - actually, for that to work, we'll have to clone the compiled code.

+(function InvalidModules() {
+  let invalid_cases = [undefined, 1, "", "a", {some:1, obj: "b"}];
+  let len = invalid_cases.length;
+  for (var i = 0; i < len; ++i) {
+    try {
+      let instance = new WebAssembly.Instance(1);
+      assertUnreachable("should not be able to instantiate invalid modules.");
+    } catch (e) {
+      assertContains("Argument 0", e.toString());
+    }
+  }
+})();