First release

node_modules/@videojs/vhs-utils/test/stream.test.js

@@ -0,0 +1,51 @@
+import QUnit from 'qunit';
+import Stream from '../src/stream';
+
+QUnit.module('stream', {
+
+  beforeEach() {
+    this.stream = new Stream();
+  },
+
+  afterEach() {
+    this.stream.dispose();
+  }
+});
+
+QUnit.test('trigger calls listeners', function(assert) {
+  const args = [];
+
+  this.stream.on('test', function(data) {
+    args.push(data);
+  });
+
+  this.stream.trigger('test', 1);
+  this.stream.trigger('test', 2);
+
+  assert.deepEqual(args, [1, 2]);
+});
+
+QUnit.test('callbacks can remove themselves', function(assert) {
+  const args1 = [];
+  const args2 = [];
+  const args3 = [];
+  const arg2Fn = (event) => {
+    args2.push(event);
+    this.stream.off('test', arg2Fn);
+  };
+
+  this.stream.on('test', (event) => {
+    args1.push(event);
+  });
+  this.stream.on('test', arg2Fn);
+  this.stream.on('test', (event) => {
+    args3.push(event);
+  });
+
+  this.stream.trigger('test', 1);
+  this.stream.trigger('test', 2);
+
+  assert.deepEqual(args1, [1, 2], 'first callback ran all times');
+  assert.deepEqual(args2, [1], 'second callback removed after first run');
+  assert.deepEqual(args3, [1, 2], 'third callback ran all times');
+});