expectRead(4, "foo ", nil)
		expectRead(1, "b", nil)
		expectRead(3, "ar", nil)
		expectRead(1, "", EOF)
	})
	withFooBar(func() {
		expectRead(5, "foo ", nil)
	})
}

func TestMultiReaderAsWriterTo(t *testing.T) {
	mr := MultiReader(
		strings.NewReader("foo "),
		MultiReader( // Tickle the buffer reusing codepath
			strings.NewReader(""),
			strings.NewReader("bar"),
		),
	)