call.cancel()
    assertFailsWith<IOException> {
      call.execute()
    }
  }

  @Test
  fun defaultRequestProperty() {
    URLConnection.setDefaultRequestProperty("X-testSetDefaultRequestProperty", "A")
    assertThat(URLConnection.getDefaultRequestProperty("X-setDefaultRequestProperty")).isNull()
  }

  /**
   * Reads `count` characters from the stream. If the stream is exhausted before `count`