scratch-vm/test/integration/variable_monitor_reset.js
Christopher Willis-Ford 840ffb5df0 test: don't use process.exit to end tests
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.
2022-06-07 11:44:06 -07:00

42 lines
1.7 KiB
JavaScript

const path = require('path');
const test = require('tap').test;
const makeTestStorage = require('../fixtures/make-test-storage');
const readFileToBuffer = require('../fixtures/readProjectFile').readFileToBuffer;
const VirtualMachine = require('../../src/index');
const projectUri = path.resolve(__dirname, '../fixtures/monitored_variables.sb3');
const project = readFileToBuffer(projectUri);
const anotherProjectUri = path.resolve(__dirname, '../fixtures/default.sb2');
const anotherProject = readFileToBuffer(anotherProjectUri);
test('importing one project after the other resets monitored variables', t => {
const vm = new VirtualMachine();
vm.attachStorage(makeTestStorage());
// Start VM, load project, and run
vm.start();
vm.clear();
vm.setCompatibilityMode(false);
vm.setTurboMode(false);
vm.loadProject(project).then(() => {
const refSprite = vm.runtime.targets[1];
const refVarId = Object.keys(refSprite.variables)[0];
const refBlock = vm.runtime.monitorBlocks.getBlock(refVarId);
t.ok(refBlock);
const jamalSprite = vm.runtime.targets[2];
const jamalVarId = Object.keys(jamalSprite.variables)[0];
const jamalBlock = vm.runtime.monitorBlocks.getBlock(jamalVarId);
t.ok(jamalBlock);
vm.loadProject(anotherProject).then(() => {
// Blocks from the previously loaded project should be gone.
const refVarBlock = vm.runtime.monitorBlocks.getBlock(refVarId);
t.notOk(refVarBlock);
const jamalVarBlock = vm.runtime.monitorBlocks.getBlock(jamalVarId);
t.notOk(jamalVarBlock);
vm.quit();
t.end();
});
});
});