Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

Scripts/node_modules/through/test/buffering.js

@@ -0,0 +1,71 @@
+var test = require('tape')
+var through = require('../')
+
+// must emit end before close.
+
+test('buffering', function(assert) {
+  var ts = through(function (data) {
+    this.queue(data)
+  }, function () {
+    this.queue(null)
+  })
+
+  var ended = false,  actual = []
+
+  ts.on('data', actual.push.bind(actual))
+  ts.on('end', function () {
+    ended = true
+  })
+
+  ts.write(1)
+  ts.write(2)
+  ts.write(3)
+  assert.deepEqual(actual, [1, 2, 3])
+  ts.pause()
+  ts.write(4)
+  ts.write(5)
+  ts.write(6)
+  assert.deepEqual(actual, [1, 2, 3])
+  ts.resume()
+  assert.deepEqual(actual, [1, 2, 3, 4, 5, 6])
+  ts.pause()
+  ts.end()
+  assert.ok(!ended)
+  ts.resume()
+  assert.ok(ended)
+  assert.end()
+})
+
+test('buffering has data in queue, when ends', function (assert) {
+
+  /*
+   * If stream ends while paused with data in the queue,
+   * stream should still emit end after all data is written
+   * on resume.
+   */
+
+  var ts = through(function (data) {
+    this.queue(data)
+  }, function () {
+    this.queue(null)
+  })
+
+  var ended = false,  actual = []
+
+  ts.on('data', actual.push.bind(actual))
+  ts.on('end', function () {
+    ended = true
+  })
+
+  ts.pause()
+  ts.write(1)
+  ts.write(2)
+  ts.write(3)
+  ts.end()
+  assert.deepEqual(actual, [], 'no data written yet, still paused')
+  assert.ok(!ended, 'end not emitted yet, still paused')
+  ts.resume()
+  assert.deepEqual(actual, [1, 2, 3], 'resumed, all data should be delivered')
+  assert.ok(ended, 'end should be emitted once all data was delivered')
+  assert.end();
+})