* @param c the character to escape
   */
  public static void assertEscaping(CharEscaper escaper, String expected, char c) {

    String escaped = computeReplacement(escaper, c);
    Assert.assertNotNull(escaped);
    Assert.assertEquals(expected, escaped);
  }

  /**
   * Asserts that a Unicode escaper escapes the given code point into the expected string.
   *
   * @param escaper the non-null escaper to test

          }
        };
    AssertionFailedError actual = null;
    try {
      tester.test();
    } catch (AssertionFailedError e) {
      actual = e;
    }
    assertNotNull("verify() should be able to cause test failure", actual);
    assertTrue(
        "AssertionFailedError should have info about why test failed",
        actual.getCause().getMessage().contains(message));
  }

            expected = range1;
          } else {
            expected = range1.span(range2);
          }
        }

        try {
          assertEquals(expected, rangeMap.span());
          assertNotNull(expected);
        } catch (NoSuchElementException e) {
          assertNull(expected);
        }
      }
    }
  }

  public void testAllRangesAlone() {
    for (Range<Integer> range : RANGES) {

    FreshValueGenerator generator = new FreshValueGenerator();
    // repeat a few times to make sure we don't stumble upon a bad Locale
    assertNotNull(generator.generateFresh(Currency.class));
    assertNotNull(generator.generateFresh(Currency.class));
    assertNotNull(generator.generateFresh(Currency.class));
  }

  public void testNulls() throws Exception {
    new ClassSanityTester()

      // under high memory pressure keys/values may be nulled out but not yet enqueued
      assertThat(table.size()).isAtMost(segment.count);
      for (Entry<?, ?> entry : table.entrySet()) {
        assertNotNull(entry.getKey());
        assertNotNull(entry.getValue());
        assertSame(entry.getValue(), cchm.get(entry.getKey()));
      }
    }
    checkEviction(cchm);
    checkExpiration(cchm);
  }

  /**

    try {
      hp = HostAndPort.fromString(hpString);
    } catch (IllegalArgumentException e) {
      // Make sure we expected this.
      assertNull(expectHost);
      return;
    }
    assertNotNull(expectHost);

    // Apply withDefaultPort(), yielding hp2.
    final boolean badDefaultPort = (defaultPort < 0 || defaultPort > 65535);
    HostAndPort hp2 = null;
    try {

    assertThat(e).hasMessageThat().isEqualTo("resource no such resource not found.");
  }

  public void testGetResource() {
    assertNotNull(Resources.getResource("com/google/common/io/testdata/i18n.txt"));
  }

  public void testGetResource_relativePath_notFound() {
    IllegalArgumentException e =
        assertThrows(

    // Should wrap Appendable in a new object
    Appendable plainAppendable = new StringBuilder();
    Writer result = CharStreams.asWriter(plainAppendable);
    assertNotSame(plainAppendable, result);
    assertNotNull(result);

    // A Writer should not be wrapped
    Appendable secretlyAWriter = new StringWriter();
    result = CharStreams.asWriter(secretlyAWriter);
    assertSame(secretlyAWriter, result);
  }

    // Should wrap Appendable in a new object
    Appendable plainAppendable = new StringBuilder();
    Writer result = CharStreams.asWriter(plainAppendable);
    assertNotSame(plainAppendable, result);
    assertNotNull(result);

    // A Writer should not be wrapped
    Appendable secretlyAWriter = new StringWriter();
    result = CharStreams.asWriter(secretlyAWriter);
    assertSame(secretlyAWriter, result);
  }

    } catch (RuntimeException e) {
      actualRuntimeException = e;
    }

    assertEquals(expectedResult, actualResult);
    if (expectedRuntimeException != null) {
      assertNotNull(actualRuntimeException);
      assertEquals(expectedRuntimeException.getClass(), actualRuntimeException.getClass());
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester