### Dependency injection

FastAPI'ın inanılmaz derecede kullanımı kolay, fakat inanılmaz derecede güçlü <abbr title='"components", "resources", "services", "providers" olarak da bilinen'><strong>Dependency Injection </strong></abbr> sistemi var.

* Dependencylerin bile dependencies'i olabiliyor, FastAPI bunun  için **graph of "dependency"** yaratıyor.

### Wstrzykiwanie Zależności

FastAPI zawiera niezwykle łatwy w użyciu, ale niezwykle potężny system <abbr title='Po angielsku: Dependency Injection. Znane również jako "components", "resources", "services", "providers"'><strong>Wstrzykiwania Zależności</strong></abbr>.

* Nawet zależności mogą mieć zależności, tworząc hierarchię lub **"graf" zależności**.
* Wszystko jest **obsługiwane automatycznie** przez framework.

### Dependency Injection { #dependency-injection }

FastAPI includes an extremely easy to use, but extremely powerful <abbr title='also known as "components", "resources", "services", "providers"'><strong>Dependency Injection</strong></abbr> system.

* Even dependencies can have dependencies, creating a hierarchy or **"graph" of dependencies**.
* All **automatically handled** by the framework.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<profiles version="12">
<profile kind="CodeFormatterProfile" name="DBFlute Style" version="12">
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_ellipsis" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_space_after_comma_in_enum_declarations" value="insert"/>
<setting id="org.eclipse.jdt.core.formatter.insert_new_line_in_empty_annotation_declaration" value="insert"/>

	if !s.IsValid(w, r) {
		s.writeErrorResponse(w, errors.New("Invalid request"))
		return
	}

	vars := mux.Vars(r)
	profiles := strings.Split(vars[peerRESTProfiler], ",")
	if len(profiles) == 0 {
		s.writeErrorResponse(w, errors.New("profiler name is missing"))
		return
	}
	globalProfilerMu.Lock()
	defer globalProfilerMu.Unlock()
	if globalProfiler == nil {

import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.internal.util.SMBUtil;

@ExtendWith(MockitoExtension.class)
class SrvCopychunkCopyTest {

所有的這些都是可重複使用的工具和套件，可以輕鬆與你的系統、資料儲存（Data Stores）、關聯式資料庫（RDBMS）以及非關聯式資料庫（NoSQL）等等整合。


### 依賴注入（Dependency Injection）

FastAPI 有一個使用簡單，但是非常強大的<abbr title='也叫做 "components", "resources", "services", "providers"'><strong>依賴注入</strong></abbr>系統。

* 依賴項甚至可以有自己的依賴，從而形成一個層級或**依賴圖**的結構。
* 所有**自動化處理**都由框架完成。
* 依賴項不僅能從請求中提取資料，還能**對 API 的路徑操作進行強化**，並自動生成文檔。
* 即使是依賴項中定義的*路徑操作參數*，也會**自動進行驗證**。
* 支持複雜的用戶身份驗證系統、**資料庫連接**等。

title: FastAPI — How to add basic and cookie authentication - author: Nils de Bruin author_link: https://medium.com/@nilsdebruin link: https://medium.com/data-rebels/fastapi-google-as-an-external-authentication-provider-3a527672cf33 title: FastAPI — Google as an external authentication provider - author: William Hayes author_link: https://medium.com/@williamhayes link: https://medium.com/@williamhayes/fastapi-starlette-debug-vs-prod-5f7561db3a59 title: FastAPI/Starlette debug vs prod - author: Mukul...

     * Creates the environment for LDAP connection.
     *
     * @param initialContextFactory The initial context factory.
     * @param securityAuthentication The security authentication.
     * @param providerUrl The provider URL.
     * @param principal The principal.
     * @param credntials The credentials.
     * @return The environment for LDAP connection.
     */

        SMBSigningDigest dg = mock(SMBSigningDigest.class);
        transport.setDigest(dg);
        assertSame(dg, transport.getDigest());
    }

    @Test
    @DisplayName("Context accessor returns constructor-provided context")
    void contextAccessor() {
        assertSame(ctx, transport.getContext());
    }

    @Test
    @DisplayName("acquire returns same instance")
    void acquireReturnsSameInstance() {