this.wordSeparator = wordSeparator;
  }

  /**
   * Converts the specified {@code String str} from this format to the specified {@code format}. A
   * "best effort" approach is taken; if {@code str} does not conform to the assumed format, then
   * the behavior of this method is undefined but we make a reasonable effort at converting anyway.
   */
  public final String to(CaseFormat format, String str) {
    checkNotNull(format);

    for (int i = 0; i < times; i++) {
      waitingThread.interrupt();
    }

    future.set(RESULT);

    assertEquals(times > 0, (boolean) interruptReporter.get(20, SECONDS));
  }

  /**
   * Confirms that the test code triggers {@link InterruptedException} in a standard {@link Future}.
   */
  public void testMakeUninterruptible_plainFutureSanityCheck() throws Exception {

   *
   * <p>The value returned by this method is non-null except in rare circumstances:
   *
   * <ul>
   *   <li>{@link #JAVA_EXT_DIRS} was deprecated in Java 8 and removed in Java 9. We have not
   *       confirmed whether it is available under older versions.
   *   <li>{@link #JAVA_COMPILER}, while still listed as required as of Java 15, is typically not
   *       available even under older version.

            <!-- Even after we stop using JSR305 annotations in our own code, we'll want this link so that NullPointerTester's docs can link to @CheckForNull and friends... at least once we start using this config for guava-testlib. -->
            <offlineLink>
              <url>https://static.javadoc.io/com.google.code.findbugs/jsr305/3.0.1/</url>
              <location>${project.basedir}/javadoc-link/jsr305</location>