sink.writeFrom(reader);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertThat(sink.getString()).isEqualTo(STRING);
  }

  public void testWriteFromStream_doesNotCloseThatStream() throws IOException {
    TestReader in = new TestReader();
    assertFalse(in.closed());
    sink.writeFrom(in);
    assertFalse(in.closed());
  }

    sink.writeFrom(reader);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertThat(sink.getString()).isEqualTo(STRING);
  }

  public void testWriteFromStream_doesNotCloseThatStream() throws IOException {
    TestReader in = new TestReader();
    assertFalse(in.closed());
    sink.writeFrom(in);
    assertFalse(in.closed());
  }

    sink.writeFrom(in);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertArrayEquals(bytes, sink.getBytes());
  }

  public void testWriteFromStream_doesNotCloseThatStream() throws IOException {
    TestInputStream in = new TestInputStream(new ByteArrayInputStream(new byte[10]));
    assertFalse(in.closed());
    sink.writeFrom(in);
    assertFalse(in.closed());
  }

    sink.writeFrom(in);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertArrayEquals(bytes, sink.getBytes());
  }

  public void testWriteFromStream_doesNotCloseThatStream() throws IOException {
    TestInputStream in = new TestInputStream(new ByteArrayInputStream(new byte[10]));
    assertFalse(in.closed());
    sink.writeFrom(in);
    assertFalse(in.closed());
  }