From c13a8359d4cc3f4c8b551246c053920614b91c9d Mon Sep 17 00:00:00 2001
From: mvlabat <mvlabat@gmail.com>
Date: Tue, 20 Feb 2018 11:30:01 +0200
Subject: [PATCH] Fix Rust wasm-gc test

---
 test/rust.js | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/test/rust.js b/test/rust.js
index d06b664f28a..a6c4dc7e183 100644
--- a/test/rust.js
+++ b/test/rust.js
@@ -102,12 +102,21 @@ describe('rust', function() {
 
   it('should use wasm-gc to minify output', async function() {
     this.timeout(500000);
+
+    // Store the size of not minified bundle in order to test it against
+    // the size of minified one.
     let b = await bundle(__dirname + '/integration/rust/index.js', {
+      minify: false,
+      sourceMaps: false
+    });
+    const size = fs.statSync(Array.from(b.childBundles)[0].name).size;
+
+    let bMinified = await bundle(__dirname + '/integration/rust/index.js', {
       minify: true,
       sourceMaps: false
     });
 
-    assertBundleTree(b, {
+    const bundleTree = {
       name: 'index.js',
       assets: [
         'bundle-loader.js',
@@ -122,12 +131,16 @@ describe('rust', function() {
           childBundles: []
         }
       ]
-    });
+    };
 
-    var res = await run(b);
+    assertBundleTree(b, bundleTree);
+    assertBundleTree(bMinified, bundleTree);
+
+    var res = await run(bMinified);
     assert.equal(res, 5);
 
-    // assert that it is smaller
-    assert(fs.statSync(Array.from(b.childBundles)[0].name).size < 200);
+    const sizeMinified = fs.statSync(Array.from(bMinified.childBundles)[0].name)
+      .size;
+    assert(sizeMinified < size);
   });
 });