// 5. Verify heartbeat fails after unregistration
        assertFalse(mockService.processHeartbeat(regId, 4));
    }

    /**
     * Test error conditions and edge cases
     */
    @Test
    void testErrorConditions() {
        // Test operations on empty service
        assertEquals(0, mockService.getRegistrationCount());

        when(transport.acquire()).thenReturn(transport);
        when(transport.getContext()).thenReturn(cifsContext);
    }

    // Helper to set private fields for targeted edge cases
    private static void setField(Object target, String name, Object value) {
        try {
            Field f = target.getClass().getDeclaredField(name);
            f.setAccessible(true);
            f.set(target, value);

        sut.close();

        verify(handle, never()).close(anyLong());
    }

    // Invalid input: constructing with null handle and invoking watch() NPEs
    @Test
    @DisplayName("Null handle causes NPE on watch() (invalid input)")
    void constructor_nullHandle_watch_throwsNPE() {
        SmbWatchHandleImpl sut = new SmbWatchHandleImpl(null, 0, false);

        assertThrows(NullPointerException.class, () -> {

        annotations = new ArrayList<>();
        for (Annotation a : classOrMethod.getDeclaredAnnotations()) {
          /*
           * We avoid reflecting on NullMarked because its @Target(..., MODULE) causes problems
           * under JDK 8.
           */
          if (!(a instanceof NullMarked)
              && a.annotationType().isAnnotationPresent(TesterAnnotation.class)) {
            annotations.add(a);

import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSException;
import jcifs.Configuration;

/**
 * Tests for SpnegoContext focusing on delegation, error handling, and edge cases.
 */
@ExtendWith(MockitoExtension.class)
class SpnegoContextTest {

    @Mock
    Configuration config;

    @Mock
    SSPContext mechContext;

    private ASN1ObjectIdentifier[] mechs;

    * Como as estruturas de dados do Pydantic são apenas instâncias de classes que você define, o preenchimento automático, linting, mypy e a sua intuição devem funcionar corretamente com seus dados validados.
* Valida **estruturas complexas**:

type itemOrErr[V any] struct {
	Item V
	Err  error
}

func filterStorageClass(ctx context.Context, s string) string {
	// Veeam 14.0 and later clients are not compatible with custom storage classes.
	if globalVeeamForceSC != "" && s != storageclass.STANDARD && s != storageclass.RRS && isVeeamClient(ctx) {
		return globalVeeamForceSC
	}
	return s
}

type ordered interface {

        verify(tree, atLeastOnce()).release();
    }

    @ParameterizedTest
    @ValueSource(strings = { "", " ", "*", "?" })
    @DisplayName("Supports various wildcard values without throwing (edge cases)")
    void wildcardEdgeCases(String wildcard) throws Exception {
        // minimal successful first response with a single entry

You can also read more about them in the <a href="https://en.wikipedia.org/wiki/Environment_variable" class="external-link" target="_blank">Wikipedia for Environment Variable</a>.

In many cases it's not very obvious how environment variables would be useful and applicable right away. But they keep showing up in many different scenarios when you are developing, so it's good to know about them.

	expected := false
	if locked != expected {
		t.Errorf("TestDualWriteLockTimedOut(): \nexpected %#v\ngot      %#v", expected, locked)
	}
}

// Test cases below are copied 1 to 1 from sync/rwmutex_test.go (adapted to use DRWMutex)

// Borrowed from rwmutex_test.go
func parallelReader(ctx context.Context, m *DRWMutex, clocked, cunlock, cdone chan bool) {