test for TeacherService

.idea/workspace.xml

@@ -2,20 +2,8 @@
 <project version="4">
   <component name="ChangeListManager">
     <list default="true" id="93915b5b-eeab-4656-8b9a-933619ebc5f0" name="Changes" comment="">
-      <change afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/constant/Constant.java" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/dto/ErrorDto.java" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/dto/StudentDto.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/.gitignore" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/pom.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/controller/StudentController.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/controller/StudentController.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/controller/StudentTeacherResponseVO.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/responseobject/StudentTeacherResponseVO.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/dto/TeacherDto.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/dto/TeacherDto.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/feign/FeignFallBack.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/feign/FeignFallBack.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/feign/FeignService.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/feign/FeignService.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/model/Student.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/model/Student.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/service/StudentService.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/service/StudentService.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/teacher-service/.idea/.gitignore" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/teacher-service/teacher-service/.gitignore" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/student-service/student-service/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/mapper/StudentMapper.java" beforeDir="false" afterPath="$PROJECT_DIR$/student-service/student-service/src/main/java/com/example/student/mapper/StudentMapper.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -30,13 +18,13 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "RunOnceActivity.OpenProjectViewOnStart": "true",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "last_opened_file_path": "/Users/aqadeer/Desktop/java-training-project-complete"
+  <component name="PropertiesComponent">{
+  &quot;keyToString&quot;: {
+    &quot;RunOnceActivity.OpenProjectViewOnStart&quot;: &quot;true&quot;,
+    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
+    &quot;last_opened_file_path&quot;: &quot;/Users/aqadeer/Desktop/java-training-project-complete&quot;
   }
-}]]></component>
+}</component>
   <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
   <component name="TaskManager">
     <task active="true" id="Default" summary="Default task">

student-service/student-service/.idea/workspace.xml

@@ -5,10 +5,19 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="bd185af2-024c-4245-af2c-5893b8b011d9" name="Changes" comment="">
+      <change afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/.idea/uiDesigner.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/exception/ControllerAdvisor.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/exception/ResourceNotFoundCustomException.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/test/java/com/example/teacher/controller/TeacherControllerTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/test/java/com/example/teacher/service/TeacherServiceTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/../../.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/TeacherServiceApplication.java" beforeDir="false" afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/TeacherServiceApplication.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/example/student/feign/FeignService.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/example/student/feign/FeignService.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/com/example/student/mapper/StudentMapper.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/com/example/student/mapper/StudentMapper.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../teacher-service/teacher-service/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/pom.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/controller/TeacherController.java" beforeDir="false" afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/controller/TeacherController.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/service/TeacherService.java" beforeDir="false" afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/src/main/java/com/example/teacher/service/TeacherService.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/../../teacher-service/teacher-service/target/generated-sources/annotations/com/example/teacher/mapper/TeacherMapperImpl.java" beforeDir="false" afterPath="$PROJECT_DIR$/../../teacher-service/teacher-service/target/generated-sources/annotations/com/example/teacher/mapper/TeacherMapperImpl.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -26,6 +35,17 @@
   <component name="Git.Settings">
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/../.." />
   </component>
+  <component name="HighlightingSettingsPerFile">
+    <setting file="file://$PROJECT_DIR$/pom.xml" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/constant/Constant.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/controller/StudentController.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/dto/TeacherDto.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/feign/FeignFallBack.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/feign/FeignService.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/mapper/StudentMapper.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/java/com/example/student/service/StudentService.java" root0="FORCE_HIGHLIGHTING" />
+    <setting file="file://$PROJECT_DIR$/src/main/resources/application.properties" root0="FORCE_HIGHLIGHTING" />
+  </component>
   <component name="MarkdownSettingsMigration">
     <option name="stateVersion" value="1" />
   </component>

student-service/student-service/src/main/java/com/example/student/feign/FeignService.java

@@ -14,8 +14,8 @@ import static com.example.student.constant.Constant.FEIGN_URL;
 public interface FeignService {
 
     @GetMapping("/name/{teacherName}")
-    public ResponseEntity<TeacherDto> findTeacherByName(@PathVariable String teacherName);
+    ResponseEntity<TeacherDto> findTeacherByName(@PathVariable String teacherName);
 
     @GetMapping("/age/{age}")
-    public ResponseEntity<List<TeacherDto>> findTeacherByAge(@PathVariable int age);
+    ResponseEntity<List<TeacherDto>> findTeacherByAge(@PathVariable int age);
 }

student-service/student-service/src/main/java/com/example/student/mapper/StudentMapper.java

@@ -5,7 +5,6 @@ import com.example.student.model.Student;
 import org.mapstruct.Mapper;
 
 import java.util.List;
-import java.util.Optional;
 
 @Mapper(componentModel = "spring")
 public interface StudentMapper {

teacher-service/teacher-service/.idea/uiDesigner.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>
\ No newline at end of file

teacher-service/teacher-service/pom.xml

@@ -55,6 +55,20 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-validation</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.13.2</version>
+			<scope>test</scope>
+		</dependency>
+		<!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
+		<dependency>
+			<groupId>org.mockito</groupId>
+			<artifactId>mockito-core</artifactId>
+			<version>4.6.1</version>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 
 	<build>

teacher-service/teacher-service/src/main/java/com/example/teacher/controller/TeacherController.java

@@ -2,6 +2,7 @@ package com.example.teacher.controller;
 
 
 import com.example.teacher.dto.TeacherDto;
+import com.example.teacher.exception.ResourceNotFoundCustomException;
 import com.example.teacher.model.Teacher;
 import com.example.teacher.service.TeacherService;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -32,7 +33,7 @@ public class TeacherController {
 
     // GET methods
     @GetMapping("/id-array")
-    public ResponseEntity<List<Teacher>> findTeacherById(@RequestParam int[] id) throws InterruptedException {
+    public ResponseEntity<List<Teacher>> findTeacherById(@RequestParam int[] id) throws InterruptedException, ResourceNotFoundCustomException {
         List<Teacher> teacherList = new ArrayList<>();
         for (int x: id) {
             Optional<Teacher> myTeacher = teacherService.findTeacherById(x);

teacher-service/teacher-service/src/main/java/com/example/teacher/exception/ControllerAdvisor.java

+package com.example.teacher.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+public class ControllerAdvisor {
+
+    @ExceptionHandler(ResourceNotFoundCustomException.class)
+    @ResponseStatus(HttpStatus.NOT_FOUND)
+    public String handleResourceNotFoundCustomException() {
+        return "Teacher does not exist";
+    }
+}

teacher-service/teacher-service/src/main/java/com/example/teacher/exception/ResourceNotFoundCustomException.java

+package com.example.teacher.exception;
+
+public class ResourceNotFoundCustomException extends Exception{
+    public ResourceNotFoundCustomException(String message) {
+        super(message);
+    }
+}

teacher-service/teacher-service/src/main/java/com/example/teacher/service/TeacherService.java

@@ -2,6 +2,7 @@ package com.example.teacher.service;
 
 import com.example.teacher.dto.ErrorDto;
 import com.example.teacher.dto.TeacherDto;
+import com.example.teacher.exception.ResourceNotFoundCustomException;
 import com.example.teacher.mapper.TeacherMapper;
 import com.example.teacher.model.Teacher;
 import com.example.teacher.repository.TeacherRepository;
@@ -42,14 +43,18 @@ public class TeacherService {
     }
 
     // GET Teacher By ID Synchronously
-    public Optional<Teacher> findTeacherById(int id) throws InterruptedException {
+    public Optional<Teacher> findTeacherById(int id) throws InterruptedException, ResourceNotFoundCustomException {
         Thread.sleep(500);
         log.info("GET Teacher of id " + id + " by Thread " + Thread.currentThread().getName());
         Optional<Teacher> myTeacher = teacherRepository.findById(id);
+//        return Optional.of(myTeacher.filter(Teacher::isActive).orElseThrow(() -> new ResourceNotFoundCustomException("Teacher does not exist")));
         if (myTeacher.isPresent() && myTeacher.get().isActive()){
             return myTeacher;
         }
-        return Optional.empty();
+        else {
+            throw new ResourceNotFoundCustomException("Teacher does not exist");
+        }
+//        return Optional.empty();
     }
 
     // GET Teacher By ID Asynchronously

teacher-service/teacher-service/src/test/java/com/example/teacher/controller/TeacherControllerTest.java

+package com.example.teacher.controller;
+
+
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@WebMvcTest(TeacherController.class)
+public class TeacherControllerTest {
+}

teacher-service/teacher-service/src/test/java/com/example/teacher/service/TeacherServiceTest.java

+package com.example.teacher.service;
+
+import com.example.teacher.dto.TeacherDto;
+import com.example.teacher.exception.ResourceNotFoundCustomException;
+import com.example.teacher.mapper.TeacherMapper;
+import com.example.teacher.model.Teacher;
+import com.example.teacher.repository.TeacherRepository;
+import org.assertj.core.api.DateAssert;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Optional;
+
+//@RunWith(MockitoJUnitRunner.class)
+public class TeacherServiceTest {
+
+    @Mock
+    private TeacherRepository teacherRepository;
+
+    @Mock
+    private TeacherMapper teacherMapper;
+
+    @InjectMocks
+    private TeacherService teacherService;
+
+    private Teacher myTeacher;
+    private List<Teacher> teacherList;
+    private TeacherDto myTeacherDto;
+    private Date date;
+
+    AutoCloseable openMocks;
+
+    @Before
+    public void setup() {
+        // initializes a mock object for those fields that have @Mock on them.
+        openMocks = MockitoAnnotations.openMocks(this);
+    }
+
+    @Before
+    public void createTeacher() throws ParseException {
+        // create a dummy object
+        date = new SimpleDateFormat("yyyy:MM:dd").parse("11:11:2011");
+        myTeacher = new Teacher(0, "Teacher", 25, "maths", date, true);
+        myTeacherDto = new TeacherDto(0, "Teacher", 25, "maths", date, null);
+        teacherList = new ArrayList<>();
+        teacherList.add(myTeacher);
+    }
+
+    @Test
+    public void getAllTeachersTest() {
+        // run this instead of calling the actual repository method
+        Mockito.when(teacherRepository.findAll()).thenReturn(teacherList);
+        List<Teacher> mockTeacherList = teacherService.findAllTeachers();
+
+        // assert statements checks if the results are as we expected.
+        Assert.assertEquals(mockTeacherList.get(0), teacherList.get(0));
+    }
+
+    @Test
+    public void findTeacherByIdTest() throws InterruptedException, ResourceNotFoundCustomException {
+        Mockito.when(teacherRepository.findById(0)).thenReturn(Optional.of(myTeacher));
+        Optional<Teacher> returnedTeacher = teacherService.findTeacherById(0);
+        Assert.assertEquals(returnedTeacher.get(), myTeacher);
+    }
+
+    @Test
+
+    public void findTeacherByWrongIdTest() throws InterruptedException {
+        Mockito.when(teacherRepository.findById(0)).thenReturn(Optional.empty());
+        try {
+            Optional<Teacher> returnedTeacher = teacherService.findTeacherById(0);
+        }
+        catch (ResourceNotFoundCustomException e) {
+            Assert.assertEquals(e.getMessage(), "Teacher does not exist");
+        }
+    }
+
+    @Test
+    public void findTeacherByWrongIdTest1() throws InterruptedException {
+        Mockito.when(teacherRepository.findById(0)).thenReturn(Optional.empty());
+        Exception exception = Assert.assertThrows(ResourceNotFoundCustomException.class, () -> teacherService.findTeacherById(0));
+        Assert.assertEquals(exception.getMessage(), "Teacher does not exist");
+    }
+
+    @Test(expected = ResourceNotFoundCustomException.class)
+    public void findTeacherByWrongIdTest2() throws InterruptedException, ResourceNotFoundCustomException {
+        Mockito.when(teacherRepository.findById(0)).thenReturn(Optional.empty());
+        Optional<Teacher> returnedTeacher = teacherService.findTeacherById(0);
+    }
+
+    @Test
+    public void findTeacherByNameTest() throws ParseException {
+        Mockito.when(teacherRepository.findTeacherByName("Teacher")).thenReturn(myTeacher);
+        Mockito.when(teacherMapper.entityToDto(myTeacher)).thenReturn(myTeacherDto);
+        TeacherDto returnedTeacher = teacherService.findTeacherByName("Teacher");
+        Assert.assertEquals(returnedTeacher.getName(), myTeacherDto.getName());
+        Assert.assertEquals(returnedTeacher.getAge(), myTeacherDto.getAge());
+//        // assertEquals will check the reference of the object instead of its attributes.
+//        Assert.assertEquals(returnedTeacher, myTeacherDto);
+        Assert.assertEquals(returnedTeacher.getDateOfJoining(), date);
+    }
+
+    @Test
+    public void findTeacherByAgeTest() {
+        Mockito.when(teacherRepository.findTeacherByAge(25)).thenReturn(teacherList);
+        List<Teacher> returnedTeacherList = teacherService.findTeacherByAge(25);
+        Assert.assertEquals(returnedTeacherList, teacherList);
+    }
+
+    @Test
+    public void deleteTeacherByIdTest() {
+        Teacher myDeletedTeacher = new Teacher(0, "Teacher", 25, "maths", new Date(), false);
+        Mockito.when(teacherRepository.findTeacherById(0)).thenReturn(myTeacher);
+        boolean isDeleted = teacherService.deleteTeacherById(0);
+        Assert.assertTrue(isDeleted);
+    }
+
+    @Test
+    public void deleteTeacherByWrongIdTest() {
+        Teacher myDeletedTeacher = new Teacher(0, "Teacher", 25, "maths", new Date(), false);
+        Mockito.when(teacherRepository.findTeacherById(0)).thenReturn(null);
+        boolean isDeleted = teacherService.deleteTeacherById(0);
+        Assert.assertFalse(isDeleted);
+    }
+
+    @AfterEach
+    public void tearDown() throws Exception {
+        openMocks.close();
+    }
+}
\ No newline at end of file

teacher-service/teacher-service/target/generated-sources/annotations/com/example/teacher/mapper/TeacherMapperImpl.java

@@ -7,7 +7,7 @@ import org.springframework.stereotype.Component;
 
 @Generated(
     value = "org.mapstruct.ap.MappingProcessor",
-    date = "2022-07-14T16:43:13+0500",
+    date = "2022-08-03T10:51:27+0500",
     comments = "version: 1.4.2.Final, compiler: javac, environment: Java 18.0.1.1 (Oracle Corporation)"
 )
 @Component