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https://github.com/scratchfoundation/scratch-vm.git
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840ffb5df0
Newer versions of `tap` run more asynchronously, so sometimes using `process.nextTick(process.exit)` to end a test would prevent the test from completing correctly. Removing all instances of `process.nextTick(process.exit)` put tests into three categories: * the test still worked correctly -- no fixup needed. * the test would hang because the VM's `_steppingInterval` was keeping Node alive. These tests call a new `quit()` method which ends the stepping interval. * the `load-extensions` test needed special attention because the "Video Sensing" extension starts its own loop using `setTimeout`. I added a `_stopLoop()` method on the extension and directly call that from the test. I'm not completely happy with this solution but anything more general would likely require a change to the extension spec, so I'm leaving that as a followup task.
110 lines
3.7 KiB
JavaScript
110 lines
3.7 KiB
JavaScript
/**
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* This test ensures that the VM gracefully handles an sb3 project with
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* a missing bitmap costume. The VM should handle this safely by displaying
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* a Gray Question Mark, but keeping track of the original costume data
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* and serializing the original costume data back out. The saved project.json
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* should not reflect that the costume is broken and should therefore re-attempt
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* to load the costume if the saved project is re-loaded.
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*/
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const path = require('path');
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const tap = require('tap');
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const makeTestStorage = require('../fixtures/make-test-storage');
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const FakeRenderer = require('../fixtures/fake-renderer');
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const FakeBitmapAdapter = require('../fixtures/fake-bitmap-adapter');
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const readFileToBuffer = require('../fixtures/readProjectFile').readFileToBuffer;
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const VirtualMachine = require('../../src/index');
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const {serializeCostumes} = require('../../src/serialization/serialize-assets');
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const projectUri = path.resolve(__dirname, '../fixtures/missing_png.sb3');
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const project = readFileToBuffer(projectUri);
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const missingCostumeAssetId = 'e1320c21995dcf6de10119be7f08c26b';
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global.Image = function () {
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const image = {
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width: 1,
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height: 1
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};
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setTimeout(() => image.onload(), 1000);
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return image;
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};
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global.document = {
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createElement: () => ({
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// Create mock canvas
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getContext: () => ({
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drawImage: () => ({})
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})
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})
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};
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let vm;
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tap.beforeEach(() => {
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const storage = makeTestStorage();
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vm = new VirtualMachine();
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vm.attachStorage(storage);
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vm.attachRenderer(new FakeRenderer());
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vm.attachV2BitmapAdapter(new FakeBitmapAdapter());
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return vm.loadProject(project);
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});
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const test = tap.test;
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test('loading sb3 project with missing bitmap costume file', t => {
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t.equal(vm.runtime.targets.length, 2);
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const stage = vm.runtime.targets[0];
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t.ok(stage.isStage);
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const greenGuySprite = vm.runtime.targets[1];
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t.equal(greenGuySprite.getName(), 'Green Guy');
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t.equal(greenGuySprite.getCostumes().length, 1);
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const missingCostume = greenGuySprite.getCostumes()[0];
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t.equal(missingCostume.name, 'Green Guy');
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// Costume should have both default cosutme (e.g. Gray Question Mark) data and original data
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const defaultVectorAssetId = vm.runtime.storage.defaultAssetId.ImageBitmap;
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t.equal(missingCostume.assetId, defaultVectorAssetId);
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t.equal(missingCostume.dataFormat, 'png');
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// Runtime should have info about broken asset
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t.ok(missingCostume.broken);
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t.equal(missingCostume.broken.assetId, missingCostumeAssetId);
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t.end();
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});
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test('load and then save sb3 project with missing costume file', t => {
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const resavedProject = JSON.parse(vm.toJSON());
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t.equal(resavedProject.targets.length, 2);
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const stage = resavedProject.targets[0];
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t.ok(stage.isStage);
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const greenGuySprite = resavedProject.targets[1];
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t.equal(greenGuySprite.name, 'Green Guy');
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t.equal(greenGuySprite.costumes.length, 1);
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const missingCostume = greenGuySprite.costumes[0];
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t.equal(missingCostume.name, 'Green Guy');
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// Costume should have both default cosutme (e.g. Gray Question Mark) data and original data
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t.equal(missingCostume.assetId, missingCostumeAssetId);
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t.equal(missingCostume.dataFormat, 'png');
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// Test that we didn't save any data about the costume being broken
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t.notOk(missingCostume.broken);
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t.end();
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});
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test('serializeCostume does not save data for missing costume', t => {
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const costumeDescs = serializeCostumes(vm.runtime);
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t.equal(costumeDescs.length, 1); // Should only have one costume, the backdrop
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t.not(costumeDescs[0].fileName, `${missingCostumeAssetId}.png`);
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t.end();
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});
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