// as we only guarantee a lookback buffer size of one, any subsequent calls to back()
// before calling next() may panic
func (s *scanner) back() {
	if s.ipos <= 0 {
		panic("back buffer exhausted")
	}
	s.ipos--
	s.pos--

		t.Fatalf("failed to query data, got error %v", err)
	}

	AssertEqual(t, result.Roles, data.Roles)
	AssertEqual(t, result.JobInfo.Location, data.JobInfo.Location)
}

// Test for: panic when serializer field with any type is nil
func TestSerializerWithAnyType(t *testing.T) {
	type ProductWithAny struct {
		gorm.Model
		Name string
		Data any `gorm:"serializer:json"`
	}

    * Mas ele fornece a você as ferramentas para construir aplicações _web_ simples, com roteamento baseado em caminhos, etc.
    * Se você quer fazer comparações com o Starlette, compare com Sanic, Flask, Django, etc. _Frameworks Web_ (ou _microframeworks_).
* **FastAPI**:

func TestDontLoopForever(t *testing.T) {
	s := NewScanner(strings.NewReader("abc"))
	s.Split(loopAtEOFSplit)
	// Expect a panic
	defer func() {
		err := recover()
		if err == nil {
			t.Fatal("should have panicked")
		}
		if msg, ok := err.(string); !ok || !strings.Contains(msg, "empty tokens") {
			panic(err)
		}
	}()
	for count := 0; s.Scan(); count++ {
		if count > 1000 {
			t.Fatal("looping")
		}
	}

			if err := tx.First(&User{}, "name = ?", user.Name).Error; err != nil {
				t.Fatalf("Should find saved record")
			}

			panic("force panic")
		})
	})

	if err := DB.First(&User{}, "name = ?", "transaction-block-3").Error; err == nil {
		t.Fatalf("Should not find record after panic rollback")
	}
}

func TestTransactionRaiseErrorOnRollbackAfterCommit(t *testing.T) {
	tx := DB.Begin()

		if debugPrint {
			fmt.Println("Mux", m.ID, "Handler took", time.Since(start).Round(time.Millisecond))
		}
		if r := recover(); r != nil {
			gridLogIf(ctx, fmt.Errorf("grid handler (%v) panic: %v", msg.Handler, r))
			err := RemoteErr(fmt.Sprintf("handler panic: %v", r))
			handlerErr = &err
		}
		if debugPrint {
			fmt.Println("muxServer: Mux", m.ID, "Returned with", handlerErr)
		}
	}()

    * But it provides you the tools to build simple web applications, with routing based on paths, etc.
    * If you are comparing Starlette, compare it against Sanic, Flask, Django, etc. Web frameworks (or microframeworks).
* **FastAPI**:
    * The same way that Starlette uses Uvicorn and cannot be faster than it, **FastAPI** uses Starlette, so it cannot be faster than it.

	if _, dup := decompressors.LoadOrStore(method, dcomp); dup {
		panic("decompressor already registered")
	}
}

// RegisterCompressor registers custom compressors for a specified method ID.
// The common methods [Store] and [Deflate] are built in.
func RegisterCompressor(method uint16, comp Compressor) {
	if _, dup := compressors.LoadOrStore(method, comp); dup {
		panic("compressor already registered")
	}
}

使用 Python 类型以获得出色的编辑器支持。

拥有强大的依赖注入系统，并设法尽量减少代码重复。

///

### [Sanic](https://sanic.readthedocs.io/en/latest/) { #sanic }

它是最早的一批基于 `asyncio` 的极速 Python 框架之一，且做得与 Flask 很相似。

/// note | 技术细节

它使用了 [`uvloop`](https://github.com/MagicStack/uvloop) 来替代 Python 默认的 `asyncio` 循环。这正是它如此之快的原因。

它显然启发了 Uvicorn 和 Starlette；在公开的基准测试中，它们目前比 Sanic 更快。

///

/// check | 启发 **FastAPI**：

找到实现疯狂性能的路径。

	return NewParser(ctxt, architecture, nil)
}

// tryParse executes parse func in panicOnError=true context.
// parse is expected to call any parsing methods that may panic.
// Returns error gathered from recover; nil if no parse errors occurred.
//
// For unexpected panics, calls t.Fatal.
func tryParse(t *testing.T, parse func()) (err error) {
	panicOnError = true
	defer func() {
		panicOnError = false

		e := recover()