* «/// note | Technical Details»: «/// note | Détails techniques»
* «/// note»: «/// note | Remarque»
* «/// tip»: «/// tip | Astuce»
* «/// warning»: «/// warning | Attention»
* «/// check»: «/// check | vérifier»
* «/// info»: «/// info»

* «the docs»: «les documents»
* «the documentation»: «la documentation»

* «framework»: «framework» (do not translate to «cadre»)
* «performance»: «performance»

* «type hints»: «annotations de type»

package lock

import (
	"os"
	"syscall"
)

// lockedOpenFile is an internal function.
func lockedOpenFile(path string, flag int, perm os.FileMode, rlockType int) (*LockedFile, error) {
	var lockType int16
	switch flag {
	case syscall.O_RDONLY:
		lockType = syscall.F_RDLCK
	case syscall.O_WRONLY:
		fallthrough
	case syscall.O_RDWR:
		fallthrough

			t.Errorf("Test %d, Expected `%v`, got `%v`", i+1, tt.expectedError, err)
		}
	}
}

func TestValidateParity(t *testing.T) {
	tests := []struct {
		rrsParity     int
		ssParity      int
		success       bool
		setDriveCount int
	}{
		{2, 4, true, 16},
		{3, 3, true, 16},
		{0, 0, true, 16},
		{1, 4, true, 16},
		{0, 4, true, 16},
		{7, 6, false, 16},
		{9, 0, false, 16},

     * @see org.apache.maven.plugin.logging.Log#info(java.lang.CharSequence)
     */
    @Override
    public void info(CharSequence content) {
        print("info", content);
    }

    /**
     * @see org.apache.maven.plugin.logging.Log#info(java.lang.CharSequence, java.lang.Throwable)
     */
    @Override
    public void info(CharSequence content, Throwable error) {
        print("info", content, error);
    }

    /**

	if err := d.calcError(); err != nil {
		return info, err
	}
	return d.disk.NSScanner(ctx, cache, updates, scanMode, weSleep)
}

func (d *naughtyDisk) DiskInfo(ctx context.Context, opts DiskInfoOptions) (info DiskInfo, err error) {
	if err := d.calcError(); err != nil {
		return info, err
	}
	return d.disk.DiskInfo(ctx, opts)
}

# Form Models { #form-models }

You can use **Pydantic models** to declare **form fields** in FastAPI.

/// info

To use forms, first install <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install python-multipart
```

    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/items/{item_id}": {
                    "get": {
                        "responses": {
                            "200": {

def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/": {
                "post": {
                    "responses": {
                        "200": {

def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/": {
                "get": {
                    "responses": {
                        "200": {

    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/items/": {
                    "get": {
                        "summary": "Read Items",