From 437a7e9ddd9734ab462836558975a09631494ff8 Mon Sep 17 00:00:00 2001
From: jinyoungchoi95 <jinyoungchoi95@gmail.com>
Date: Tue, 12 Oct 2021 16:56:32 +0900
Subject: [PATCH] =?UTF-8?q?[#52]=20test:=20UserService=20findByUsername=20?=
 =?UTF-8?q?=ED=85=8C=EC=8A=A4=ED=8A=B8=20=EC=B6=94=EA=B0=80?=
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---
 .../user/service/UserServiceTest.java         | 33 +++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/src/test/java/com/study/realworld/user/service/UserServiceTest.java b/src/test/java/com/study/realworld/user/service/UserServiceTest.java
index 20fee42b..51ceaf80 100644
--- a/src/test/java/com/study/realworld/user/service/UserServiceTest.java
+++ b/src/test/java/com/study/realworld/user/service/UserServiceTest.java
@@ -181,8 +181,7 @@ void findByIdSuccessTest() {
         User result = userService.findById(userId);
 
         // then
-        assertThat(result).isNotNull();
-        assertThat(result.email()).isEqualTo(user.email());
+        assertThat(result).isEqualTo(user);
     }
 
     @Test
@@ -212,6 +211,36 @@ void findByNoUserIdFailTest() {
             .withMessageMatching(ErrorCode.USER_NOT_FOUND.getMessage());
     }
 
+    @Test
+    @DisplayName("username를 가지고 유저를 조회할 때 해당 유저가 존재하면 해당 유저를 반환한다.")
+    void findByUsernameSuccessTest() {
+
+        // setup & given
+        Username username = Username.of("uesrname");
+        User user = User.Builder().email(Email.of("test@test.com")).profile(username, null, null).build();
+        when(userRepository.findByProfileUsername(username)).thenReturn(ofNullable(user));
+
+        // when
+        User result = userService.findByUsername(username);
+
+        // then
+        assertThat(result).isEqualTo(user);
+    }
+
+    @Test
+    @DisplayName("없는 유저의 username를 가지고 유저를 조회할 때 Exception이 반환되어야 한다.")
+    void findByNoUserUsesrnameFailTest() {
+
+        // setup & given
+        Username username = Username.of("username");
+        when(userRepository.findByProfileUsername(username)).thenReturn(empty());
+
+        // when & then
+        assertThatExceptionOfType(BusinessException.class)
+            .isThrownBy(() -> userService.findByUsername(username))
+            .withMessageMatching(ErrorCode.USER_NOT_FOUND.getMessage());
+    }
+
     @Test
     @DisplayName("없는 유저의 id를 가지고 update 요청 시 exception이 발생되어야 한다.")
     void updateFailByNotFoundUserTest() {