flow like the river

BACK_BACK/node_modules/@parcel/watcher/test/fswatcher.js

@@ -0,0 +1,31 @@
+const Watcher = require('../index');
+const {sleep} = require('@parcel/test-utils');
+const assert = require('assert');
+
+describe('Watcher', function() {
+  it('Should be able to create a new watcher', async () => {
+    let watcher = new Watcher();
+
+    assert(!!watcher.child);
+    assert(!watcher.ready);
+
+    await sleep(1000);
+
+    assert(!!watcher.child);
+    assert(watcher.ready);
+
+    await watcher.stop();
+  });
+
+  it('Should be able to properly destroy the watcher', async () => {
+    let watcher = new Watcher();
+
+    await sleep(1000);
+
+    assert(!!watcher.child);
+    assert(watcher.ready);
+
+    await watcher.stop();
+    assert(watcher.child.killed);
+  });
+});