}{
		{"", "", ErrInvalidAccessKeyID},
		{"admin", "", ErrSignatureDoesNotMatch},
		{"admin", "wrongpassword", ErrSignatureDoesNotMatch},
		{"wronguser", "mypassword", ErrInvalidAccessKeyID},
		{"", "mypassword", ErrInvalidAccessKeyID},
		{"admin", "mypassword", ErrNone},
	}

	for i, testCase := range testCases {
		req := mustNewRequest(http.MethodGet, "http://localhost:9000/", 0, nil, t)

		{cred, Credentials{AccessKey: "myuser", SecretKey: cred.SecretKey}, false},
		// Secret key is different in credentials to compare.
		{cred, Credentials{AccessKey: cred.AccessKey, SecretKey: "mypassword"}, false},
	}

	for i, testCase := range testCases {
		result := testCase.cred.Equal(testCase.ccred)
		if result != testCase.expectedResult {

    response = client.post("/login/", data={"username": "Foo", "password": "secret"})
    assert response.status_code == 200
    assert response.json() == {"username": "Foo", "password": "secret"}


@needs_pydanticv2
def test_post_body_extra_form(client: TestClient):
    response = client.post(
        "/login/", data={"username": "Foo", "password": "secret", "extra": "extra"}
    )
    assert response.status_code == 422

class OAuth2PasswordRequestForm:
    """
    This is a dependency class to collect the `username` and `password` as form data
    for an OAuth2 password flow.

    The OAuth2 specification dictates that for a password flow the data should be
    collected using form data (instead of JSON) and that it should have the specific
    fields `username` and `password`.

    All the initialization parameters are extracted from the request.

    response = client.post("/login/", data={"username": "Foo", "password": "secret"})
    assert response.status_code == 200
    assert response.json() == {"username": "Foo", "password": "secret"}


@needs_pydanticv1
def test_post_body_extra_form(client: TestClient):
    response = client.post(
        "/login/", data={"username": "Foo", "password": "secret", "extra": "extra"}
    )
    assert response.status_code == 422

            server = server.clone();

            String password = server.getPassword();
            if (securityDispatcher.isAnyEncryptedString(password)) {
                try {
                    if (securityDispatcher.isLegacyEncryptedString(password)) {
                        problems.add(new DefaultSettingsProblem(
                                "Legacy/insecurely encrypted password detected for server " + server.getId(),

    assert response.status_code == 200
    assert response.json() == {"username": "Foo", "password": "secret"}


# TODO: remove when deprecating Pydantic v1
@needs_pydanticv1
@needs_py39
def test_post_body_extra_form(client: TestClient):
    response = client.post(
        "/login/", data={"username": "Foo", "password": "secret", "extra": "extra"}
    )

def test_login_incorrect_username():
    response = client.post("/token", data={"username": "foo", "password": "secret"})
    assert response.status_code == 400, response.text
    assert response.json() == {"detail": "Incorrect username or password"}


def test_no_token():
    response = client.get("/users/me")
    assert response.status_code == 401, response.text

# Simple OAuth2 with Password and Bearer

Now let's build from the previous chapter and add the missing parts to have a complete security flow.

## Get the `username` and `password`

We are going to use **FastAPI** security utilities to get the `username` and `password`.

OAuth2 specifies that when using the "password flow" (that we are using) the client/user must send a `username` and `password` fields as form data.

    assert response.json() == {"detail": "Incorrect username or password"}


@needs_py39
def test_login_incorrect_username(client: TestClient):
    response = client.post("/token", data={"username": "foo", "password": "secret"})
    assert response.status_code == 400, response.text
    assert response.json() == {"detail": "Incorrect username or password"}


@needs_py39
def test_no_token(client: TestClient):