From e367b938f4f9a94550909940e8677e11099ec3dd Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Mon, 28 May 2018 23:59:57 +0200
Subject: [PATCH] add test cases for unused exports

---
 test/cases/wasm/unused-export/index.js       |  6 ++++++
 test/cases/wasm/unused-export/module.js      |  5 +++++
 test/cases/wasm/unused-export/test.filter.js |  5 +++++
 test/cases/wasm/unused-export/wasm.wat       | 10 ++++++++++
 4 files changed, 26 insertions(+)
 create mode 100644 test/cases/wasm/unused-export/index.js
 create mode 100644 test/cases/wasm/unused-export/module.js
 create mode 100644 test/cases/wasm/unused-export/test.filter.js
 create mode 100644 test/cases/wasm/unused-export/wasm.wat

diff --git a/test/cases/wasm/unused-export/index.js b/test/cases/wasm/unused-export/index.js
new file mode 100644
index 00000000000..6def057c2cd
--- /dev/null
+++ b/test/cases/wasm/unused-export/index.js
@@ -0,0 +1,6 @@
+it("should allow wasm with unused exports", function() {
+	return import("./module").then(function(module) {
+		const result = module.run();
+		expect(result).toEqual(42);
+	});
+});
diff --git a/test/cases/wasm/unused-export/module.js b/test/cases/wasm/unused-export/module.js
new file mode 100644
index 00000000000..cad01039e37
--- /dev/null
+++ b/test/cases/wasm/unused-export/module.js
@@ -0,0 +1,5 @@
+import { getNumber } from "./wasm.wat";
+
+export function run() {
+	return getNumber();
+}
diff --git a/test/cases/wasm/unused-export/test.filter.js b/test/cases/wasm/unused-export/test.filter.js
new file mode 100644
index 00000000000..23177349638
--- /dev/null
+++ b/test/cases/wasm/unused-export/test.filter.js
@@ -0,0 +1,5 @@
+var supportsWebAssembly = require("../../../helpers/supportsWebAssembly");
+
+module.exports = function(config) {
+	return supportsWebAssembly();
+};
diff --git a/test/cases/wasm/unused-export/wasm.wat b/test/cases/wasm/unused-export/wasm.wat
new file mode 100644
index 00000000000..3a135271020
--- /dev/null
+++ b/test/cases/wasm/unused-export/wasm.wat
@@ -0,0 +1,10 @@
+(module
+  (type $t0 (func (param i32 i32) (result i32)))
+  (type $t1 (func (result i32)))
+  (func $add (export "add") (type $t0) (param $p0 i32) (param $p1 i32) (result i32)
+    (i32.add
+      (get_local $p0)
+      (get_local $p1)))
+  (func $getNumber (export "getNumber") (type $t1) (result i32)
+    (i32.const 42)))
+