"input": "foo"
    }
  ]
}
```

because the path parameter `item_id` had a value of `"foo"`, which is not an `int`.

The same error would appear if you provided a `float` instead of an `int`, as in: [http://127.0.0.1:8000/items/4.2](http://127.0.0.1:8000/items/4.2)

/// check

So, with the same Python type declaration, **FastAPI** gives you data validation.

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        rateLimitHelper = new RateLimitHelper();
        rateLimitHelper.init();
    }

    @Test
    public void test_getClientIp_remoteAddr() {
        final MockletHttpServletRequest request = getMockRequest();
        request.setRemoteAddr("192.168.1.100");

package main

import (
	"bytes"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"log"
	"net/http"
	"strings"
)

var (
	keyFile  string
	certFile string
)

func init() {
	flag.StringVar(&keyFile, "key-file", "", "Path to TLS cert key file")
	flag.StringVar(&certFile, "cert-file", "", "Path to TLS cert file")
}

func writeErrorResponse(w http.ResponseWriter, err error) {

// BucketReplicationResyncStatus captures current replication resync status
type BucketReplicationResyncStatus struct {
	Version int `json:"version" msg:"v"`
	// map of remote arn to their resync status for a bucket
	TargetsMap map[string]TargetReplicationResyncStatus `json:"resyncMap,omitempty" msg:"brs"`
	ID         int                                      `json:"id" msg:"id"`
	LastUpdate time.Time                                `json:"lastUpdate" msg:"lu"`

    assertEquals(expected, getResponse(methodName).getResult());
  }

  /**
   * Causes this thread to call the named method, and asserts that the call returns the expected int
   * value.
   */
  public void callAndAssertReturns(int expected, String methodName, Object... arguments)
      throws Exception {
    checkNotNull(methodName);
    checkNotNull(arguments);
    sendRequest(methodName, arguments);

                    "price": 35.4,
                    "tax": 3.2,
                }
            ]
        }
    }


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item):
    results = {"item_id": item_id, "item": item}

class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None


app = FastAPI()


@app.put("/items/{item_id}")
async def update_item(item_id: int, item: Item):

    //                                                                          Definition
    //                                                                          ==========
    protected static final int HTTP_BAD_REQUEST = 400;
    protected static final int HTTP_UNAUTHORIZED = 401;

    // ===================================================================================

  @Override
  protected abstract Set<E> delegate();

  @Override
  public boolean equals(@Nullable Object object) {
    return object == this || delegate().equals(object);
  }

  @Override
  public int hashCode() {
    return delegate().hashCode();
  }

  /**
   * A sensible definition of {@link #removeAll} in terms of {@link #iterator} and {@link #remove}.

        }

        @ParameterizedTest
        @MethodSource("provideParameters")
        @DisplayName("should accept various parameter combinations")
        void testConstructorSucceeds(String systemName, int accessMask) {
            // Arrange
            SamrPolicyHandle ph = createMockPolicyHandle();

            // Act & Assert - constructor should not throw