assertTrue("Character '" + c + "' should be a valid URL character", CharUtil.isUrlChar(c));
        }
    }

    public void test_isUrlChar_boundaryChars() {
        // Test boundary characters for ranges
        assertTrue(CharUtil.isUrlChar('a')); // first lowercase
        assertTrue(CharUtil.isUrlChar('z')); // last lowercase
        assertTrue(CharUtil.isUrlChar('A')); // first uppercase

1. **Isolation**: Each test is independent and doesn't affect others
2. **Clarity**: Test names clearly describe what is being tested
3. **Coverage**: Both success and failure paths are tested
4. **Edge Cases**: Null, empty, and boundary conditions are covered
5. **Resources**: Test resources are properly managed and cleaned up

## Contributing

When adding new tests:

        thread2.start();

        thread1.join();
        thread2.join();

        // Should complete without errors
        assertNotNull(urlFilter);
    }

    /**
     * Test boundary conditions
     */
    public void test_boundaryConditions() {
        String sessionId = "test-session-024";
        urlFilter.init(sessionId);

        // Test empty pattern
        urlFilter.addInclude("");

        return size8(size, 0);
    }

    /**
     * Rounds up the size to the specified alignment.
     *
     * @param size the size to align
     * @param align the alignment boundary
     * @return the aligned size
     */
    protected static final int size8(final int size, final int align) {

        int rem = size % 8 - align;
        if (rem == 0) {
            return size;

query.highlight.tag.pre=<strong>
# Tag to use after highlighted text.
query.highlight.tag.post=</strong>
# Boundary characters for query highlighting.
query.highlight.boundary.chars=u0009u000Au0013u0020
# Maximum scan for query highlight boundaries.
query.highlight.boundary.max.scan=20
# Scanner type for query highlight boundaries.
query.highlight.boundary.scanner=chars
# Encoder type for query highlighting.
query.highlight.encoder=default

import com.google.common.testing.EqualsTester;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests CacheBuilderSpec. TODO(user): tests of a few invalid input conditions, boundary
 * conditions.
 *
 * @author Adam Winer
 */
@NullUnmarked
public class CacheBuilderSpecTest extends TestCase {
  public void testParse_empty() {
    CacheBuilderSpec spec = parse("");

    mockWebServer.close()
  }

  @Test
  fun multipartBody() {
    val multipartBody: MultipartBody = MultipartBody.Builder().build()
    val type: MediaType = multipartBody.type
    val boundary: String = multipartBody.boundary
    val size: Int = multipartBody.size
    val parts: List<MultipartBody.Part> = multipartBody.parts
    val part: MultipartBody.Part = multipartBody.part(0)

        assertTrue(stats.getIntegerOverflowsPrevented() > 0);
    }

    @Test
    public void testBoundaryValues() throws Exception {
        // Test boundary values for safe operations
        assertEquals(Integer.MAX_VALUE, validator.safeAdd(Integer.MAX_VALUE, 0));
        assertEquals(Integer.MIN_VALUE, validator.safeAdd(Integer.MIN_VALUE, 0));

        assertEquals("instance1", transformer1.getName());
        assertEquals("changed2", transformer2.getName());
        assertEquals("instance3", transformer3.getName());
    }

    /**
     * Test name boundary cases
     */
    public void test_name_boundaryCases() {
        // Single character
        testTransformer.setName("a");
        assertEquals("a", testTransformer.getName());

        // Single space

        assertEquals("abc", notifications.get(0).getFileName());
        assertEquals("test", notifications.get(1).getFileName());
    }

    @Test
    @DisplayName("Should handle buffer boundary conditions")
    void testBufferBoundaryConditions() throws Exception {
        // Given - notification exactly at buffer end
        byte[] buffer = new byte[104]; // Exact size needed
        int offset = 0;