feat: Context에 회원가입 기능 연동

tomcat/src/main/java/org/apache/coyote/context/HelloWorldContext.java

@@ -8,6 +8,7 @@
 import org.apache.coyote.context.exception.InvalidRootContextPathException;
 import org.apache.coyote.handler.LoginHandler;
 import org.apache.coyote.handler.LoginPageHandler;
+import org.apache.coyote.handler.RegisterHandler;
 import org.apache.coyote.handler.RegisterPageHandler;
 import org.apache.coyote.handler.ResourceHandler;
 import org.apache.coyote.handler.WelcomeHandler;
@@ -50,6 +51,7 @@ private void initHandlers() {
         handlers.add(new LoginHandler("/login", rootContextPath));
         handlers.add(new LoginPageHandler("/login", rootContextPath, "login.html", staticResourcePath));
         handlers.add(new RegisterPageHandler("/register", rootContextPath, "register.html", staticResourcePath));
+        handlers.add(new RegisterHandler("/register", rootContextPath));
     }
 
     @Override

tomcat/src/main/java/org/apache/coyote/handler/RegisterHandler.java

@@ -0,0 +1,64 @@
+package org.apache.coyote.handler;
+
+import java.io.IOException;
+import nextstep.jwp.db.InMemoryUserRepository;
+import nextstep.jwp.model.User;
+import org.apache.coyote.Handler;
+import org.apache.coyote.http.request.Request;
+import org.apache.coyote.http.response.ContentType;
+import org.apache.coyote.http.response.HttpStatusCode;
+import org.apache.coyote.http.response.Response;
+import org.apache.coyote.http.util.HeaderDto;
+import org.apache.coyote.http.util.HttpConsts;
+import org.apache.coyote.http.util.HttpMethod;
+
+public class RegisterHandler implements Handler {
+
+    private static final String ACCOUNT_KEY = "account";
+    private static final String PASSWORD_KEY = "password";
+    private static final String EMAIL_KEY = "email";
+
+    private final String path;
+    private final String rootContextPath;
+
+    public RegisterHandler(final String path, final String rootContextPath) {
+        this.path = path;
+        this.rootContextPath = rootContextPath;
+    }
+
+    @Override
+    public boolean supports(final Request request) {
+        return isPostMethod(request) && isRegisterRequest(request);
+    }
+
+    private boolean isPostMethod(final Request request) {
+        return request.matchesByMethod(HttpMethod.POST);
+    }
+
+    private boolean isRegisterRequest(final Request request) {
+        return request.matchesByPath(path, rootContextPath) && request.hasQueryParameters();
+    }
+
+    @Override
+    public Response service(final Request request) throws IOException {
+        final String account = request.findQueryParameterValue(ACCOUNT_KEY);
+        final String password = request.findQueryParameterValue(PASSWORD_KEY);
+        final String email = request.findQueryParameterValue(EMAIL_KEY);
+
+        if (account == null || password == null || email == null) {
+            return Response.of(request, HttpStatusCode.BAD_REQUEST, ContentType.JSON, HttpConsts.BLANK);
+        }
+
+        final User user = new User(account, password, email);
+
+        InMemoryUserRepository.save(user);
+
+        return Response.of(
+                request,
+                HttpStatusCode.FOUND,
+                ContentType.JSON,
+                HttpConsts.BLANK,
+                new HeaderDto("Location", "/login")
+        );
+    }
+}

tomcat/src/test/java/org/apache/coyote/handler/RegisterHandlerTest.java

@@ -0,0 +1,92 @@
+package org.apache.coyote.handler;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.IOException;
+import org.apache.coyote.http.SessionManager;
+import org.apache.coyote.http.request.HttpRequestBody;
+import org.apache.coyote.http.request.HttpRequestHeaders;
+import org.apache.coyote.http.request.QueryParameters;
+import org.apache.coyote.http.request.Request;
+import org.apache.coyote.http.request.Url;
+import org.apache.coyote.http.response.Response;
+import org.apache.coyote.http.util.HttpMethod;
+import org.apache.coyote.http.util.HttpVersion;
+import org.junit.jupiter.api.DisplayNameGeneration;
+import org.junit.jupiter.api.DisplayNameGenerator;
+import org.junit.jupiter.api.Test;
+
+@DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+class RegisterHandlerTest {
+
+    @Test
+    void 생성자는_경로와_rootContextPath를_전달하면_RegisterHandler를_초기화한다() {
+        final RegisterHandler actual = new RegisterHandler("/register", "/");
+
+        assertThat(actual).isNotNull();
+    }
+
+    @Test
+    void supports_메서드는_지원하는_요청인_경우_true를_반환한다() {
+        final RegisterHandler handler = new RegisterHandler("/register", "/");
+        final HttpRequestHeaders headers = HttpRequestHeaders.from("Content-Type: application/json");
+        final HttpMethod method = HttpMethod.findMethod("post");
+        final Url url = Url.from("/register");
+        final HttpVersion version = HttpVersion.findVersion("HTTP/1.1");
+        final Request request = new Request(
+                headers,
+                method,
+                version,
+                url,
+                HttpRequestBody.EMPTY,
+                QueryParameters.fromBodyContent("account=asdf&password=asdf&[email protected]")
+        );
+
+        final boolean actual = handler.supports(request);
+
+        assertThat(actual).isTrue();
+    }
+
+    @Test
+    void supports_메서드는_지원하지_않는_요청인_경우_false를_반환한다() {
+        final RegisterHandler handler = new RegisterHandler("/register", "/");
+        final HttpRequestHeaders headers = HttpRequestHeaders.from("Content-Type: text/html;charset=utf-8");
+        final HttpMethod method = HttpMethod.findMethod("get");
+        final Url url = Url.from("/index.html");
+        final HttpVersion version = HttpVersion.findVersion("HTTP/1.1");
+        final Request request = new Request(
+                headers,
+                method,
+                version,
+                url,
+                HttpRequestBody.EMPTY,
+                QueryParameters.EMPTY
+        );
+
+        final boolean actual = handler.supports(request);
+
+        assertThat(actual).isFalse();
+    }
+
+    @Test
+    void service_메서드는_요청을_처리하고_Response를_반환한다() throws IOException {
+        final RegisterHandler handler = new RegisterHandler("/register", "/");
+        final HttpRequestHeaders headers = HttpRequestHeaders.from("Content-Type: application/json");
+        final HttpMethod method = HttpMethod.findMethod("post");
+        final Url url = Url.from("/register");
+        final HttpVersion version = HttpVersion.findVersion("HTTP/1.1");
+        final Request request = new Request(
+                headers,
+                method,
+                version,
+                url,
+                HttpRequestBody.EMPTY,
+                QueryParameters.fromBodyContent("account=asdf&password=asdf&[email protected]")
+        );
+        request.initSessionManager(new SessionManager());
+
+        final Response actual = handler.service(request);
+
+        assertThat(actual.convertResponseMessage()).contains("302 Found");
+    }
+}