void testStatusCodesArray() {
        // When
        int[] codes = NtStatus.NT_STATUS_CODES;

        // Then
        assertNotNull(codes);
        assertTrue(codes.length > 0);
        // First code should be success
        assertEquals(NtStatus.NT_STATUS_SUCCESS, codes[0]);
    }

    @Test
    @DisplayName("Should have status messages array")
    void testStatusMessagesArray() {
        // When

        return new ImmutableEnumSet<>(set);
    }
  }

  /*
   * Notes on EnumSet and <E extends Enum<E>>:
   *
   * This class isn't an arbitrary ForwardingImmutableSet because we need to
   * know that calling {@code clone()} during deserialization will return an
   * object that no one else has a reference to, allowing us to guarantee
   * immutability. Hence, we support only {@link EnumSet}.
   */

### GNU/Linux and macOS

```sh
docker-compose pull
docker-compose up
```

    * この`dict`の値は`float`型です。（つまり、各項目の価格）

#### `Optional`

また、`Optional`を使用して、変数が`str`のような型を持つことを宣言することもできますが、それは「オプション」であり、`None`にすることもできます。

```Python hl_lines="1 4"
{!../../docs_src/python_types/tutorial009.py!}
```

ただの`str`の代わりに`Optional[str]`を使用することで、エディタは値が常に`str`であると仮定している場合に実際には`None`である可能性があるエラーを検出するのに役立ちます。

#### ジェネリック型

以下のように角括弧で型パラメータを取る型を:

* `List`
* `Tuple`
* `Set`
* `Dict`

		// validating the credential fields.
		if testCase.expectedErrCode != actualErrCode {
			t.Fatalf("Test %d: Expected the APIErrCode to be %s, got %s", i+1, errorCodes[testCase.expectedErrCode].Code, errorCodes[actualErrCode].Code)
		}
		if actualErrCode == ErrNone {
			validateCredentialfields(t, i+1, testCase.expectedCredentials, actualCredential)
		}
	}
}

	type CompositeKeyProduct struct {
		ProductID    int `gorm:"primaryKey;autoIncrement:true;"` // primary key
		LanguageCode int `gorm:"primaryKey;"`                    // primary key
		Code         string
		Name         string
	}

	if err := DB.Migrator().DropTable(&CompositeKeyProduct{}); err != nil {
		t.Fatalf("failed to migrate, got error %v", err)
	}

Now that we have all the security flow, let's make the application actually secure, using <abbr title="JSON Web Tokens">JWT</abbr> tokens and secure password hashing.

This code is something you can actually use in your application, save the password hashes in your database, etc.

We are going to start from where we left in the previous chapter and increment it.

## About JWT { #about-jwt }

            DcerpcHandle handle = mock(DcerpcHandle.class);
            LsaPolicyHandle policy = mock(LsaPolicyHandle.class);
            jcifs.SID[] none = new jcifs.SID[0];

            cache.resolveSids(handle, policy, none);
            verify(handle, times(1)).sendrecv(any(jcifs.dcerpc.msrpc.MsrpcLookupSids.class));
        }
    }

            response.setAsyncHandled(true);

            assertTrue(response.isAsyncHandled());
        }
    }

    @Nested
    @DisplayName("Error Code Tests")
    class ErrorCodeTests {

        @Test
        @DisplayName("Should return status as error code")
        void testGetErrorCode() {
            int status = NtStatus.NT_STATUS_ACCESS_DENIED;
            response.setStatusForTest(status);

Here are the **Top Contributors**. 👷

These users have [created the most Pull Requests](help-fastapi.md#create-a-pull-request){.internal-link target=_blank} that have been *merged*.

They have contributed source code, documentation, etc. 📦

<div class="user-list user-list-center">

{% for user in (contributors.values() | list)[:50] %}

{% if user.login not in skip_users %}