func TestDrainer(t *testing.T) {
Convey("Given I have a context", t, func() {
context := rivers.NewContext()
Convey("And a stream of data", func() {
in, out := stream.New(2)
out <- 1
out <- 2
close(out)
Convey("When I apply the drainer consumer", func() {
consumer := consumers.Drainer()
consumer.Attach(context)
consumer.Consume(in)
Convey("Then the stream is drained", func() {
data, opened := <-in
So(data, ShouldBeNil)
So(opened, ShouldBeFalse)
})
})
})
})
}
func (pipeline *Pipeline) Drain() error {
return pipeline.Then(consumers.Drainer())
}