#34 test: IdToken 디코딩 관련 테스트 코드 수정 (#35)

- idToken을 디코딩하여 페이로드를 가져오는 테스트는 외부 oauth 서버와 협업으로 인해서 테스트를 삭제하였습니다.
- nonce 검증 테스트는 validatePayload 메소드로 범위를 줄여서 테스트 코드를 작성하였습니다.
- DecodedIdTokenPayload 클래스의 exp 타입이 명세서와 달라 Integer로 수정하였습니다.

src/main/java/codesquad/fineants/domain/oauth/client/DecodedIdTokenPayload.java

@@ -19,7 +19,7 @@ public class DecodedIdTokenPayload {
 	private String aud;
 	private String sub;
 	private Integer iat;
-	private Long exp;
+	private Integer exp;
 	private String nonce;
 	private Integer auth_time;
 	private String picture;

src/test/java/codesquad/fineants/domain/oauth/client/OauthClientTest.java

@@ -3,13 +3,19 @@
 import static org.assertj.core.api.Assertions.*;
 
 import java.time.LocalDateTime;
+import java.time.ZoneOffset;
+import java.util.HashMap;
+import java.util.Map;
 
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.ActiveProfiles;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
 import codesquad.fineants.domain.oauth.repository.OauthClientRepository;
 import codesquad.fineants.spring.api.errors.exception.BadRequestException;
 
@@ -19,20 +25,7 @@ class OauthClientTest {
 
 	@Autowired
 	private OauthClientRepository oauthClientRepository;
-
-	@DisplayName("IdToken을 디코딩하여 페이로드를 가져온다")
-	@Test
-	void decodeIdToken() {
-		// given
-		OauthClient oauthClient = oauthClientRepository.findOneBy("kakao");
-		String idToken = "eyJraWQiOiI5ZjI1MmRhZGQ1ZjIzM2Y5M2QyZmE1MjhkMTJmZWEiLCJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJhdWQiOiJkZmIxZTI1YTJiOTdkMDNiMGIyMjVkNDg3NGEzNDgyMyIsInN1YiI6IjMxNjA5OTI1NjMiLCJhdXRoX3RpbWUiOjE2OTk4NjY2MjIsImlzcyI6Imh0dHBzOi8va2F1dGgua2FrYW8uY29tIiwiZXhwIjoxNjk5ODg4MjIyLCJpYXQiOjE2OTk4NjY2MjIsIm5vbmNlIjoiZjQ2ZTI5NzczNzhlZDZjZGYyZjAzYjU5NjIxMDFmN2QiLCJwaWN0dXJlIjoiaHR0cDovL2sua2FrYW9jZG4ubmV0L2RuL2RwazlsMS9idHFtR2hBMmxLTC9PejB3RHVKbjFZVjJESW45MmY2RFZLL2ltZ18xMTB4MTEwLmpwZyIsImVtYWlsIjoiZmluZWFudHMuY29AZ21haWwuY29tIn0.KYRaqSup_joMxGSYoWSa5bEvQRbCR3q_kUydXaDs_otD1fmJFWW3h8UsrKaHyaDT6mMIobeuTAXlhjiY7rxqhr3K3cqj3urZThIJ-h4-5VrANC6aulzyhJB93kcIJUxa2UzI0fe_TyC4pbbGvRnFDci0Iv5CuVZoL0-oLgu5LQFpM1xmNmF_SABKuIU0rV60E_Qs7PsbnodZ_emv4PLEtk1yUD1r5oAr9swtSjLG_uh1d2GXUvcIStIJN871Kp-jolqM1Ce4bp0zULd00x0nGKbPBHmS_J11NYJbjujeg771307w65KCYIPMMqM_1BbEFQghH3jDRdzwP_5_RRKhAg";
-		String nonce = "f46e2977378ed6cdf2f03b5962101f7d";
-		// when
-		DecodedIdTokenPayload payload = oauthClient.decodeIdToken(idToken, nonce, LocalDateTime.now());
-		// then
-		assertThat(payload.getEmail()).isEqualTo("fineants.co@gmail.com");
-	}
-
+
 	@DisplayName("IdToken을 디코딩할때 유효하지 않은 토큰으로 디코딩할 수 없다")
 	@Test
 	void decodeIdTokenWithInvalidIdToken() {
@@ -48,19 +41,39 @@ void decodeIdTokenWithInvalidIdToken() {
 			.hasMessage("유효하지 않은 ID Token입니다");
 	}
 
-	@DisplayName("IdToken을 디코딩할때 유효하지 않은 nonce로 디코딩할 수 없다")
+	@DisplayName("Payload를 검증할 때 유효하지 않은 nonce을 검증한다")
 	@Test
-	void decodeIdTokenWithInvalidNonce() {
+	void validatePayloadWithInvalidNonce() throws JsonProcessingException {
 		// given
 		OauthClient oauthClient = oauthClientRepository.findOneBy("kakao");
-		String idToken = "eyJraWQiOiI5ZjI1MmRhZGQ1ZjIzM2Y5M2QyZmE1MjhkMTJmZWEiLCJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJhdWQiOiJkZmIxZTI1YTJiOTdkMDNiMGIyMjVkNDg3NGEzNDgyMyIsInN1YiI6IjMxNjA5OTI1NjMiLCJhdXRoX3RpbWUiOjE2OTk4NjY2MjIsImlzcyI6Imh0dHBzOi8va2F1dGgua2FrYW8uY29tIiwiZXhwIjoxNjk5ODg4MjIyLCJpYXQiOjE2OTk4NjY2MjIsIm5vbmNlIjoiZjQ2ZTI5NzczNzhlZDZjZGYyZjAzYjU5NjIxMDFmN2QiLCJwaWN0dXJlIjoiaHR0cDovL2sua2FrYW9jZG4ubmV0L2RuL2RwazlsMS9idHFtR2hBMmxLTC9PejB3RHVKbjFZVjJESW45MmY2RFZLL2ltZ18xMTB4MTEwLmpwZyIsImVtYWlsIjoiZmluZWFudHMuY29AZ21haWwuY29tIn0.KYRaqSup_joMxGSYoWSa5bEvQRbCR3q_kUydXaDs_otD1fmJFWW3h8UsrKaHyaDT6mMIobeuTAXlhjiY7rxqhr3K3cqj3urZThIJ-h4-5VrANC6aulzyhJB93kcIJUxa2UzI0fe_TyC4pbbGvRnFDci0Iv5CuVZoL0-oLgu5LQFpM1xmNmF_SABKuIU0rV60E_Qs7PsbnodZ_emv4PLEtk1yUD1r5oAr9swtSjLG_uh1d2GXUvcIStIJN871Kp-jolqM1Ce4bp0zULd00x0nGKbPBHmS_J11NYJbjujeg771307w65KCYIPMMqM_1BbEFQghH3jDRdzwP_5_RRKhAg";
 		String nonce = "1234";
+		long exp = LocalDateTime.now().plusMinutes(5L).toEpochSecond(ZoneOffset.UTC);
+		DecodedIdTokenPayload payload = createDecodedIdTokenPayload(exp);
+
 		// when
-		Throwable throwable = catchThrowable(() -> oauthClient.decodeIdToken(idToken, nonce, LocalDateTime.now()));
+		Throwable throwable = catchThrowable(() -> oauthClient.validatePayload(payload, LocalDateTime.now(), nonce));
+
 		// then
 		assertThat(throwable)
 			.isInstanceOf(BadRequestException.class)
 			.hasMessage("nonce 값 f46e2977378ed6cdf2f03b5962101f7d과 일치하지 않습니다. nonce=1234");
 	}
 
+	private static DecodedIdTokenPayload createDecodedIdTokenPayload(long second) throws JsonProcessingException {
+		Map<String, Object> payloadMap = new HashMap<>();
+		payloadMap.put("iss", "https://kauth.kakao.com");
+		payloadMap.put("aud", "dfb1e25a2b97d03b0b225d4874a34823");
+		payloadMap.put("sub", "3160992563");
+		payloadMap.put("auth_time", second);
+		payloadMap.put("iat", second);
+		payloadMap.put("exp", second);
+		payloadMap.put("nonce", "f46e2977378ed6cdf2f03b5962101f7d");
+		payloadMap.put("picture", "http://k.kakaocdn.net/dn/dpk9l1/btqmGhA2lKL/Oz0wDuJn1YV2DIn92f6DVK/img_110x110.jpg");
+		payloadMap.put("email", "fineants.co@gmail.com");
+
+		ObjectMapper objectMapper = new ObjectMapper();
+		DecodedIdTokenPayload payload = objectMapper.readValue(objectMapper.writeValueAsString(payloadMap),
+			DecodedIdTokenPayload.class);
+		return payload;
+	}
 }