tempFile = new File(Curl.tmpDir, "non-existent-file.tmp");
        assertFalse(tempFile.exists());

        ContentCache cache = new ContentCache(tempFile);

        // Should throw IOException when file doesn't exist
        try {
            cache.close();
            fail("Expected IOException for non-existent file");
        } catch (IOException e) {

        assert data == "path/to/file"
        data = websocket.receive_text()
        assert data == "a_query_param"


def test_wrong_uri():
    """
    Verify that a websocket connection to a non-existent endpoing returns in a shutdown
    """
    client = TestClient(app)
    with pytest.raises(WebSocketDisconnect) as e:
        with client.websocket_connect("/no-router/"):
            pass  # pragma: no cover

TEST_F(CApiExperimentalFunctionTest, EmptyGraphRemoveNonExistentFunction) {
  TF_GraphRemoveFunction(func_graph_, "wrong_name", s_);
  EXPECT_EQ(TF_INVALID_ARGUMENT, TF_GetCode(s_));
  EXPECT_EQ(string("Tried to remove non-existent function 'wrong_name'."),
            string(TF_Message(s_)));
}

TEST_F(CApiExperimentalFunctionTest, GraphRemoveNonExistentFunction) {
  TF_Function* funcs[1];
  DefineFunction(func_name_, &func_);

Por ejemplo, estaba claro que idealmente debería estar basado en las anotaciones de tipos estándar de Python.

También, el mejor enfoque era usar estándares ya existentes.

Entonces, antes de siquiera empezar a programar **FastAPI**, pasé varios meses estudiando las especificaciones de OpenAPI, JSON Schema, OAuth2, etc. Entendiendo su relación, superposición y diferencias.

## Diseño { #design }

Por exemplo, estava claro que idealmente ele deveria ser baseado nos _type hints_ padrões do Python.

Também, a melhor abordagem era usar padrões já existentes.

Então, antes mesmo de começar a codificar o **FastAPI**, eu investi vários meses estudando as especificações do OpenAPI, JSON Schema, OAuth2 etc. Entendendo suas relações, sobreposições e diferenças.

## Design { #design }

        assertEquals("new_value1", retrievedValues[0]);
        assertEquals("new_value2", retrievedValues[1]);
    }

    public void test_getValuesNonExistentKey() {
        // Test getValues with non-existent key
        ExtractData data = new ExtractData();

        String[] values = data.getValues("nonexistent");
        assertNull(values);
    }

    public void test_getKeySet() {

func TestNonExistentBucketOperations(t *testing.T) {
	ExecObjectLayerTest(t, testNonExistentBucketOperations)
}

// Tests validate that bucket operation on non-existent bucket fails.
func testNonExistentBucketOperations(obj ObjectLayer, instanceType string, t TestErrHandler) {
	var opts ObjectOptions

        assertFalse(file.exists(), "Non-existent file should not exist");
        assertThrows(SmbException.class, () -> file.length(), "Getting length of non-existent file should throw exception");
        assertThrows(SmbException.class, () -> file.getInputStream(), "Getting input stream of non-existent file should throw exception");
    }

    @Test

		switch {
		case isSysErrNotDir(err) && !osIsNotExist(err):
			// Windows can have both isSysErrNotDir(err) and osIsNotExist(err) returning
			// true if the source file path contains an non-existent directory. In that case,
			// we want to return errFileNotFound instead, which will honored in subsequent
			// switch cases
			return errFileAccessDenied
		case isSysErrPathNotFound(err):

        assertNull(result);
    }

    @Test
    void testGetByNameWithNonExistentFile() {
        // Test with non-existent file
        when(mockConfig.getLmHostsFileName()).thenReturn("/non/existent/lmhosts");

        NbtAddress result = lmhosts.getByName("TEST_HOST", mockContext);

        assertNull(result);
    }

    @Test