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1 files changed, 71 insertions, 0 deletions

diff --git a/node_modules/through/test/buffering.js b/node_modules/through/test/buffering.js
new file mode 100644
index 00000000..b0084bfc
--- /dev/null
+++ b/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();
+})