Before Pydantic version 2 and before FastAPI 0.100.0, the parameter was called `regex` instead of `pattern`, but it's now deprecated.

You could still see some code using it:

//// tab | Pydantic v1

{* ../../docs_src/query_params_str_validations/tutorial004_regex_an_py310.py hl[11] *}

////

But know that this is deprecated and it should be updated to use the new parameter `pattern`. 🤓

		t.Errorf("Expected to get Author content %v but got: %v", NewPost.Author.Content, hnPost.Author.Content)
	}

	if hnPost.Author.ContentPtr != nil {
		t.Errorf("Expected to get nil Author contentPtr but got: %v", hnPost.Author.ContentPtr)
	}

	if NewPost.Author.Birthday.UnixMilli() != hnPost.Author.Birthday.UnixMilli() {
		t.Errorf("Expected to get Author birthday with %+v but got: %+v", NewPost.Author.Birthday, hnPost.Author.Birthday)

	if res.Nickname != user.Name {
		t.Errorf("Expected res.Nickname to be %s, but got %s", user.Name, res.Nickname)
	}
	if res.Name != "" {
		t.Errorf("Expected res.Name to be empty, but got %s", res.Name)
	}
	if res.Age != user.Age {
		t.Errorf("Expected res.Age to be %d, but got %d", user.Age, res.Age)
	}
}

func TestPluckWithSelect(t *testing.T) {
	users := []User{

**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette.

///

## Returning a custom `Response` { #returning-a-custom-response }

    }
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testReplaceEntry_unsupportedAbsentKey() {
    try {
      getMap().replace(k3(), v3(), v4());
    } catch (UnsupportedOperationException tolerated) {
      // the operation would be a no-op, so exceptions are allowed but not required
    }
    expectUnchanged();

    }
    expectUnchanged();
  }

  @MapFeature.Require(absent = SUPPORTS_PUT)
  public void testReplaceEntry_unsupportedAbsentKey() {
    try {
      getMap().replace(k3(), v3(), v4());
    } catch (UnsupportedOperationException tolerated) {
      // the operation would be a no-op, so exceptions are allowed but not required
    }
    expectUnchanged();

				t.Fatalf("Preload user %v pets should be %v, but got %+v", u.Name, u.Pets, result.Pets)
			}
			if len(result.Friends) != len(u.Friends) {
				t.Fatalf("Preload user %v pets should be %v, but got %+v", u.Name, u.Pets, result.Pets)
			}
		} else if len(result.Pets) != 5 || len(result.Friends) == 0 {
			t.Fatalf("Preload user %v pets should be 5, but got %+v", result.Name, result.Pets)
		}

		t.Errorf("Should found two users's name in 1, 2, but got %v", len(users1))
	}

	DB.Scopes(NameIn1And2, NameIn2And3).Find(&users2)
	if len(users2) != 1 {
		t.Errorf("Should found one user's name is 2, but got %v", len(users2))
	}

	DB.Scopes(NameIn([]string{users[0].Name, users[2].Name})).Find(&users3)
	if len(users3) != 2 {
		t.Errorf("Should found two users's name in 1, 3, but got %v", len(users3))
	}

		if tc.shouldPass && err != nil {
			t.Fatalf("Test case %d: Expected to succeed but got %s", i+1, err)
		}

		if !tc.shouldPass {
			if err == nil || err != nil && err.Error() != tc.expectedErr.Error() {
				t.Fatalf("Test case %d: Expected %s but got %s", i+1, tc.expectedErr, err)
			}
		}
	}

     */
    String getLastaDiSmartDeployMode();

    /**
     * Get the value for the key 'development.here'. <br>
     * The value is, e.g. true <br>
     * comment: Is development environment here? (used for various purpose, you should set false if unknown)
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */