private static void assertEmpty(JimfsInputStream in) throws IOException {
    assertThat(in.read()).isEqualTo(-1);
    assertThat(in.read(new byte[3])).isEqualTo(-1);
    assertThat(in.read(new byte[10], 1, 5)).isEqualTo(-1);
    assertThat(in.available()).isEqualTo(0);
  }
Tests for {@link JimfsInputStream}.

@author Colin Decker
jimfs/src/test/java/com/google/common/jimfs/JimfsInputStreamTest.java