wantErr: io.ErrUnexpectedEOF,
	}, {
		inputData: padInput("0\n"),
		inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"},
		wantMap:   sparseDatas{},
	}, {
		inputData: padInput("0\n")[:blockSize-1] + "#",
		inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"},
		wantMap:   sparseDatas{},
	}, {
		inputData: padInput("0"),

    for (String badInput : BAD_TRY_PARSE_INPUTS) {
      assertThat(badInput)
          .doesNotMatch(
              Pattern.compile(
                  Doubles.FLOATING_POINT_PATTERN.pattern(),
                  Doubles.FLOATING_POINT_PATTERN.flags()));
      assertThat(Doubles.tryParse(badInput)).isEqualTo(referenceTryParse(badInput));
      assertThat(Doubles.tryParse(badInput)).isNull();
    }
  }

    assertEquals(RESULT_DATA, resultFuture.get());
  }

  public void testFutureGetThrowsRuntimeException() throws Exception {
    BadFuture badInput = new BadFuture(immediateFuture(20));
    ListenableFuture<String> chain = buildChainingFuture(badInput);
    ExecutionException e = assertThrows(ExecutionException.class, () -> chain.get());
    assertSame(RuntimeException.class, e.getCause().getClass());
  }

    assertEquals(RESULT_DATA, resultFuture.get());
  }

  public void testFutureGetThrowsRuntimeException() throws Exception {
    BadFuture badInput = new BadFuture(immediateFuture(20));
    ListenableFuture<String> chain = buildChainingFuture(badInput);
    ExecutionException e = assertThrows(ExecutionException.class, () -> chain.get());
    assertSame(RuntimeException.class, e.getCause().getClass());
  }

    for (String badInput : BAD_TRY_PARSE_INPUTS) {
      assertThat(badInput)
          .doesNotMatch(
              Pattern.compile(
                  Doubles.FLOATING_POINT_PATTERN.pattern(),
                  Doubles.FLOATING_POINT_PATTERN.flags()));
      assertThat(Doubles.tryParse(badInput)).isEqualTo(referenceTryParse(badInput));
      assertThat(Doubles.tryParse(badInput)).isNull();
    }
  }

    "NaNd",
    "InfinityF"
  };

  @GwtIncompatible // Floats.tryParse
  public void testTryParseFailures() {
    for (String badInput : BAD_TRY_PARSE_INPUTS) {
      assertThat(Floats.tryParse(badInput)).isEqualTo(referenceTryParse(badInput));
      assertThat(Floats.tryParse(badInput)).isNull();
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNulls() {

    "NaNd",
    "InfinityF"
  };

  @GwtIncompatible // Floats.tryParse
  public void testTryParseFailures() {
    for (String badInput : BAD_TRY_PARSE_INPUTS) {
      assertThat(Floats.tryParse(badInput)).isEqualTo(referenceTryParse(badInput));
      assertThat(Floats.tryParse(badInput)).isNull();
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNulls() {