Add test for serialization order

test/integration/tw_serialize_asset_order.js

@@ -0,0 +1,56 @@
+const fs = require('fs');
+const path = require('path');
+const {test} = require('tap');
+const JSZip = require('jszip');
+const VM = require('../../src/virtual-machine');
+const makeTestStorage = require('../fixtures/make-test-storage');
+
+const fixture = fs.readFileSync(path.join(__dirname, '..', 'fixtures', 'tw-serialize-asset-order.sb3'));
+
+test('saveProjectSb3 serialization order', t => {
+    t.plan(13);
+    const vm = new VM();
+    vm.attachStorage(makeTestStorage());
+    vm.loadProject(fixture).then(() => {
+        vm.saveProjectSb3('arraybuffer').then(serialized => {
+            JSZip.loadAsync(serialized).then(zip => {
+                const files = Object.keys(zip.files);
+                for (let i = 0; i < files.length; i++) {
+                    // 6 costumes, 6 sounds
+                    if (i === 0) {
+                        t.equal(files[i], 'project.json', 'first file is project.json');
+                    } else if (i < 7) {
+                        t.ok(files[i].endsWith('.svg'), `file ${i + 1} is costume`);
+                    } else {
+                        t.ok(files[i].endsWith('.wav'), `file ${i + 1} is sound`);
+                    }
+                }
+                t.end();
+            });
+        });
+    });
+});
+
+test('exportSprite serialization order', t => {
+    t.plan(9);
+    const vm = new VM();
+    vm.attachStorage(makeTestStorage());
+    vm.loadProject(fixture).then(() => {
+        vm.exportSprite(vm.runtime.targets[1].id, 'arraybuffer').then(serialized => {
+            JSZip.loadAsync(serialized).then(zip => {
+                const files = Object.keys(zip.files);
+                for (let i = 0; i < files.length; i++) {
+                    // 4 costumes, 4 sounds
+                    if (i === 0) {
+                        t.equal(files[i], 'sprite.json', 'first file is sprite.json');
+                    } else if (i < 5) {
+                        t.ok(files[i].endsWith('.svg'), `file ${i + 1} is costume`);
+                    } else {
+                        t.ok(files[i].endsWith('.wav'), `file ${i + 1} is sound`);
+                    }
+                }
+                t.end();
+            });
+        });
+    });
+});