@Test
  public void testAvailable() throws IOException {
    JimfsInputStream in = newInputStream(1, 2, 3, 4, 5, 6, 7, 8);
    assertThat(in.available()).isEqualTo(8);
    assertThat(in.read()).isEqualTo(1);
    assertThat(in.available()).isEqualTo(7);
    assertThat(in.read(new byte[3])).isEqualTo(3);
    assertThat(in.available()).isEqualTo(4);
    assertThat(in.read(new byte[10], 1, 2)).isEqualTo(2);
    assertThat(in.available()).isEqualTo(2);
    assertThat(in.read(new byte[10])).isEqualTo(2);
    assertThat(in.available()).isEqualTo(0);
  }
Tests for {@link JimfsInputStream}.

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