expectedResult string
	}{
		{bf, "off"},
		{BoolFlag(true), "on"},
		{BoolFlag(false), "off"},
	}

	for _, testCase := range testCases {
		str := testCase.flag.String()
		if testCase.expectedResult != str {
			t.Fatalf("expected: %v, got: %v", testCase.expectedResult, str)
		}
	}
}

// Test BoolFlag.MarshalJSON()
func TestBoolFlagMarshalJSON(t *testing.T) {
	var bf BoolFlag

	testCases := []struct {

              j++
            ) {
              str = reslist[j];

              // Check for duplicates using Set lookup
              if (!seenTexts[str]) {
                seenTexts[str] = true;
                $liEle = $("<li/>");
                $liEle.text(str); // Use text() instead of html() to prevent XSS
                $liEle.attr({
                  role: "option",

        final MyBean myBean = new MyBean();
        final BeanDesc beanDesc = new BeanDescImpl(MyBean.class);
        final PropertyDesc propDesc = beanDesc.getPropertyDesc("str");
        propDesc.setValue(myBean, Integer.valueOf(1));
        assertThat(myBean.str, is("1"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testSetNullToString() throws Exception {

* Data conversion
* Data validation
* Automatic documentation

## Special types and validation { #special-types-and-validation }

Apart from normal singular types like `str`, `int`, `float`, etc. you can use more complex singular types that inherit from `str`.

To see all the options you have, checkout [Pydantic's Type Overview](https://docs.pydantic.dev/latest/concepts/types/). You will see some examples in the next chapter.

    }

    private static boolean isAny(String str) {
        return "*".equals(str);
    }

    private static boolean matches(String pattern, String str) {
        if (isAny(pattern)) {
            return true;
        } else if (pattern.endsWith("*")) {
            return str.startsWith(pattern.substring(0, pattern.length() - 1));
        } else {

            }
            System.arraycopy(Strings.getUNIBytes(str), 0, dst, dstIndex, str.length() * 2);
            dstIndex += str.length() * 2;
            dst[dstIndex] = (byte) '\0';
            dstIndex++;
            dst[dstIndex++] = (byte) '\0';
        } else {
            final byte[] b = Strings.getOEMBytes(str, this.getConfig());
            System.arraycopy(b, 0, dst, dstIndex, b.length);

from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


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


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int,
    item: Item = Body(
        openapi_examples={
            "normal": {
                "summary": "A normal example",

### `UploadFile` { #uploadfile }

`UploadFile` має такі атрибути:

* `filename`: Рядок `str` з оригінальною назвою файлу, який був завантажений (наприклад, `myimage.jpg`).
* `content_type`: Рядок `str` з типом вмісту (MIME type / media type) (наприклад, `image/jpeg`).

	v := Versioning{
		Status: Enabled,
	}
	buf, err := xml.Marshal(v)
	if err != nil {
		t.Fatalf("Failed to marshal %v: %v", v, err)
	}

	str := string(buf)
	if strings.Contains(str, "ExcludedPrefixes") {
		t.Fatalf("XML shouldn't contain ExcludedPrefixes tag - %s", str)
	}
}

func TestVersioningZero(t *testing.T) {
	var v Versioning
	if v.Enabled() {
		t.Fatalf("Expected to be disabled but got enabled")

from inline_snapshot import snapshot
from pydantic import BaseModel

app = FastAPI()

api_key = APIKeyHeader(name="key")


class User(BaseModel):
    username: str


def get_current_user(oauth_header: str = Security(api_key)):
    user = User(username=oauth_header)
    return user


@app.get("/users/me")
def read_current_user(current_user: User = Depends(get_current_user)):