* abruptly. In other cases, a test may put a thread into an uninterruptible operation
   * intentionally, so there is no other way to clean up these threads. (The better solution,
   * though, would be to run the tests that use TestThread in separate VMs so that their threads
   * don't hang around during other tests.)
   */
  @Override
  public void tearDown() throws Exception {
    try {

   * we wanted to support legacy classes that implement the raw type {@code Comparable} (instead of
   * implementing {@code Comparable<Foo>}) without producing warnings. If so, we would prefer today
   * to produce warnings in that case, and we may change this method to do so in the future. Support
   * for raw {@code Comparable} types in Guava in general is tracked as <a

   * href="https://url.spec.whatwg.org/#url-code-points">many of these are accepted in modern
   * URLs</a>. (<a href="https://url.spec.whatwg.org/#path-state">If the escaper were to leave these
   * characters unescaped, they would be escaped by the consumer at parse time, anyway.</a>)
   * Additionally, the escaper escapes the slash character ("/"). While slashes are acceptable in

                this.usageCount.set(0);

                // Clear mutable references to free memory
                // Note: Some fields may be final and cannot be nulled

                // Clear any other mutable state would go here
            }
        } catch (Exception e) {
            log.error("Failed to perform emergency file handle cleanup", e);
        }
    }

    /**

// DIVHW R0, R1: R1 / R0 -> R1
	DIVHW	R0, R1               // 11f011e7
	DIVUHW	R0, R1               // 11f031e7

// misc
	CLZ	R1, R2         // 112f6fe1
	WORD	$0             // 00000000
	WORD	$4294967295    // ffffffff
	WORD	$2863311530    // aaaaaaaa
	WORD	$1431655765    // 55555555
	PLD	4080(R6)       // f0ffd6f5
	PLD	-4080(R9)      // f0ff59f5
	RFE	               // 0080fde8

        assertEquals("", systemHelper.validatePassword("password!"));
        assertEquals("", systemHelper.validatePassword("pass@word"));
        assertEquals("", systemHelper.validatePassword("pass#word"));
    }

    @Test
    public void test_validatePassword_blacklisted() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {

 * descriptor ACEs:
 *
 * <pre>
 * Allow WNET\alice     0x001200A9  Direct
 * Allow Administrators 0x001F01FF  Inherited
 * Allow SYSTEM         0x001F01FF  Inherited
 * </pre>
 *
 * the access check would fail because the direct ACE has an access mask
 * of <code>0x001200A9</code> which doesn't have the
 * <code>FILE_WRITE_DATA</code> bit on (bit <code>0x00000002</code>). Actually, this isn't quite correct. If

                log.debug("Error releasing tree connection during emergency cleanup", e);
            }

            // Note: resourceLoc is final, cannot be set to null
            // Clear other mutable references would go here

        } catch (Exception e) {
            log.error("Failed to perform emergency tree handle cleanup", e);
        }
    }

    /**
     * {@inheritDoc}
     *

     * to process and store tracking information ONLY into local repository, not to any other place. This method
     * filters out currently built artifacts, as events are fired for them as well, but their resolved artifact
     * file would point to checked out source-tree, not the local repository.
     * <p>
     * Visible for testing.
     */
    static boolean isLocalRepositoryArtifactOrMissing(RepositorySystemSession session, Artifact artifact) {

#### Using test fixtures

Sometimes we want to share test fixtures to setup the code under test across multiple projects. There are basically two ways doing so.

Ideally we would use the build-in [java-test-fixtures](https://docs.gradle.org/current/userguide/java_testing.html#sec:java_test_fixtures) gradle plugin.
This plugin relies on having a separate sourceSet for the test fixtures code.