diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index e8f0d7d..e75b5e3 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -16,7 +16,6 @@
             <option value="$PROJECT_DIR$/jcenter" />
           </set>
         </option>
-        <option name="resolveModulePerSourceSet" value="false" />
       </GradleProjectSettings>
     </option>
   </component>
diff --git a/furufuru/build.gradle b/furufuru/build.gradle
index d52586d..de6fb8c 100644
--- a/furufuru/build.gradle
+++ b/furufuru/build.gradle
@@ -147,7 +147,7 @@ dependencies {
     testImplementation "android.arch.core:core-testing:1.1.1"
 
     // mockk
-    ext.mockk = "1.12.3"
+    ext.mockk = "1.12.7"
     testImplementation "io.mockk:mockk:${mockk}"
     testImplementation "io.mockk:mockk-agent-jvm:${mockk}"
 
diff --git a/furufuru/src/test/java/dev/iaiabot/furufuru/feature/ExampleUnitTest.kt b/furufuru/src/test/java/dev/iaiabot/furufuru/feature/ExampleUnitTest.kt
index 483e6bd..7fac8e5 100644
--- a/furufuru/src/test/java/dev/iaiabot/furufuru/feature/ExampleUnitTest.kt
+++ b/furufuru/src/test/java/dev/iaiabot/furufuru/feature/ExampleUnitTest.kt
@@ -1,16 +1,33 @@
 package dev.iaiabot.furufuru.feature
 
+import dev.iaiabot.furufuru.usecase.MyExtension
 import org.junit.Assert.assertEquals
-import org.junit.Test
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.extension.ExtendWith
 
 /**
  * Example local unit test, which will execute on the development machine (host).
  *
  * See [testing documentation](http://d.android.com/tools/testing).
  */
+
+@ExtendWith(MyExtension::class)
 class ExampleUnitTest {
     @Test
     fun addition_isCorrect() {
+        println("test1")
+        assertEquals(4, 2 + 2)
+    }
+
+    @Test
+    fun hoge() {
+        println("test2")
+        assertEquals(4, 2 + 2)
+    }
+
+    @Test
+    fun fuga() {
+        println("test3")
         assertEquals(4, 2 + 2)
     }
 }
diff --git a/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/GetScreenShotUseCaseImplTest.kt b/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/GetScreenShotUseCaseImplTest.kt
index 9ae8238..490f418 100644
--- a/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/GetScreenShotUseCaseImplTest.kt
+++ b/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/GetScreenShotUseCaseImplTest.kt
@@ -1,14 +1,20 @@
 package dev.iaiabot.furufuru.usecase
 
 import com.google.common.truth.Truth.assertThat
+import dev.iaiabot.furufuru.feature.ui.issue.IssueBodyTemplate
 import dev.iaiabot.furufuru.repository.ScreenshotRepository
 import dev.iaiabot.furufuru.testtool.initMockOnGroup
 import io.mockk.coEvery
+import io.mockk.junit5.MockKExtension
+import io.mockk.mockkObject
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.runBlocking
+import org.junit.jupiter.api.TestInstance
+import org.junit.jupiter.api.extension.*
 import org.spekframework.spek2.Spek
 import org.spekframework.spek2.style.specification.describe
 
+@ExtendWith(MyExtension::class)
 internal object GetScreenShotUseCaseImplTest : Spek({
     lateinit var usecase: GetScreenShotUseCase
     val screenshotRepository = initMockOnGroup<ScreenshotRepository>()
@@ -16,6 +22,7 @@ internal object GetScreenShotUseCaseImplTest : Spek({
     describe("#getScreenShot()") {
         context("スクリーンショットがある場合") {
             beforeGroup {
+                mockkObject(IssueBodyTemplate)
                 coEvery { screenshotRepository.observe() } returns flow { emit("SCREEN_SHOT") }
                 usecase = GetScreenShotUseCaseImpl(
                     screenshotRepository,
@@ -31,3 +38,18 @@ internal object GetScreenShotUseCaseImplTest : Spek({
         }
     }
 })
+
+open class MyExtension: Extension, BeforeEachCallback, BeforeAllCallback, AfterAllCallback {
+
+    override fun beforeEach(context: ExtensionContext?) {
+        println("furufuru before each")
+    }
+
+    override fun beforeAll(context: ExtensionContext?) {
+        println("furufuru before all")
+    }
+
+    override fun afterAll(context: ExtensionContext?) {
+        println("furufuru after all")
+    }
+}
diff --git a/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/PostIssueUseCaseImplTest.kt b/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/PostIssueUseCaseImplTest.kt
index 05f3b2c..2b34c5f 100644
--- a/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/PostIssueUseCaseImplTest.kt
+++ b/furufuru/src/test/java/dev/iaiabot/furufuru/usecase/PostIssueUseCaseImplTest.kt
@@ -10,13 +10,16 @@ import dev.iaiabot.furufuru.usecase.user.SaveUsernameUseCase
 import dev.iaiabot.furufuru.util.GithubSettings
 import io.mockk.coEvery
 import io.mockk.every
+import io.mockk.junit5.MockKExtension
 import io.mockk.mockk
 import io.mockk.mockkObject
 import kotlinx.coroutines.runBlocking
 import org.junit.Assert.fail
+import org.junit.jupiter.api.extension.ExtendWith
 import org.spekframework.spek2.Spek
 import org.spekframework.spek2.style.specification.describe
 
+@ExtendWith(MockKExtension::class)
 internal object PostIssueUseCaseImplTest : Spek({
     lateinit var usecase: PostIssueUseCase
     val issueRepository = initMockOnGroup<IssueRepository>()
@@ -34,7 +37,6 @@ internal object PostIssueUseCaseImplTest : Spek({
                 every { imageUrl } returns "image"
             }
             every { githubSettings.furufuruBranch } returns "furufuru-branch"
-            mockkObject(IssueBodyTemplate)
             every { IssueBodyTemplate.createBody(any(), any(), any(), any()) } returns "ISSUE_BODY"
             coEvery { issueRepository.post(any()) } returns Unit
             coEvery { saveUsernameUseCase(any()) } returns Unit
diff --git a/furufuru/src/test/resources/junit-platform.properties b/furufuru/src/test/resources/junit-platform.properties
new file mode 100644
index 0000000..b3823ff
--- /dev/null
+++ b/furufuru/src/test/resources/junit-platform.properties
@@ -0,0 +1,2 @@
+junit.jupiter.testinstance.lifecycle.default=per_class
+junit.extensions.autodetection.enabled=true