diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepository.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepository.kt
index 37a476b1..59965760 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepository.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepository.kt
@@ -163,6 +163,8 @@ class ExposedPostRepository(
     override suspend fun findById(id: PostId): Post? = query {
         Posts
             .leftJoin(PostsMedia)
+            .leftJoin(PostsEmojis)
+            .leftJoin(PostsVisibleActors)
             .selectAll()
             .where {
                 Posts.id eq id.id
@@ -174,6 +176,9 @@ class ExposedPostRepository(
     override suspend fun findAllById(ids: List<PostId>): List<Post> {
         return query {
             Posts
+                .leftJoin(PostsMedia)
+                .leftJoin(PostsEmojis)
+                .leftJoin(PostsVisibleActors)
                 .selectAll()
                 .where {
                     Posts.id inList ids.map { it.id }
@@ -182,21 +187,48 @@ class ExposedPostRepository(
         }
     }
 
-    override suspend fun findByActorId(id: ActorId, page: Page?): PaginationList<Post, PostId> = PaginationList(
-        query {
-            Posts
+    override suspend fun findByActorId(id: ActorId, page: Page?): PaginationList<Post, PostId> {
+        val postList = query {
+            val query = Posts
+                .leftJoin(PostsMedia)
+                .leftJoin(PostsEmojis)
+                .leftJoin(PostsVisibleActors)
                 .selectAll()
                 .where {
-                    actorId eq actorId
+                    actorId eq id.id
                 }
-                .let(postQueryMapper::map)
-        },
-        null,
-        null
-    )
+
+            page(page, query)
+
+            page?.limit?.let { query.limit(it) }
+
+            query.let(postQueryMapper::map)
+        }
+
+        val posts = if (page?.minId != null) {
+            postList.reversed()
+        } else {
+            postList
+        }
+
+        return PaginationList(
+            posts,
+            null,
+            null
+        )
+    }
 
     override suspend fun delete(post: Post) {
         query {
+            PostsMedia.deleteWhere {
+                postId eq post.id.id
+            }
+            PostsEmojis.deleteWhere {
+                postId eq post.id.id
+            }
+            PostsVisibleActors.deleteWhere {
+                postId eq post.id.id
+            }
             Posts.deleteWhere {
                 id eq post.id.id
             }
@@ -213,20 +245,15 @@ class ExposedPostRepository(
     ): PaginationList<Post, PostId> {
         val postList = query {
             val query = Posts
+                .leftJoin(PostsMedia)
+                .leftJoin(PostsEmojis)
+                .leftJoin(PostsVisibleActors)
                 .selectAll()
                 .where {
                     Posts.actorId eq actorId.id and (visibility inList visibilityList.map { it.name })
                 }
 
-            if (of?.minId != null) {
-                query.orderBy(Posts.createdAt, SortOrder.ASC)
-                of.minId?.let { query.andWhere { Posts.id greater it } }
-                of.maxId?.let { query.andWhere { Posts.id less it } }
-            } else {
-                query.orderBy(Posts.createdAt, SortOrder.DESC)
-                of?.sinceId?.let { query.andWhere { Posts.id greater it } }
-                of?.maxId?.let { query.andWhere { Posts.id less it } }
-            }
+            page(of, query)
 
             of?.limit?.let { query.limit(it) }
 
@@ -246,6 +273,21 @@ class ExposedPostRepository(
         )
     }
 
+    private fun page(
+        page: Page?,
+        query: Query
+    ) {
+        if (page?.minId != null) {
+            query.orderBy(createdAt, SortOrder.ASC)
+            page.minId?.let { query.andWhere { id greater it } }
+            page.maxId?.let { query.andWhere { id less it } }
+        } else {
+            query.orderBy(createdAt, SortOrder.DESC)
+            page?.sinceId?.let { query.andWhere { id greater it } }
+            page?.maxId?.let { query.andWhere { id less it } }
+        }
+    }
+
     companion object {
         private val logger = LoggerFactory.getLogger(ExposedPostRepository::class.java)
     }
diff --git a/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/domain/model/post/TestPostFactory.kt b/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/domain/model/post/TestPostFactory.kt
index 388aaca0..8dea9878 100644
--- a/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/domain/model/post/TestPostFactory.kt
+++ b/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/domain/model/post/TestPostFactory.kt
@@ -1,6 +1,7 @@
 package dev.usbharu.hideout.core.domain.model.post
 
 import dev.usbharu.hideout.core.domain.model.actor.ActorId
+import dev.usbharu.hideout.core.domain.model.emoji.CustomEmojiId
 import dev.usbharu.hideout.core.domain.model.instance.InstanceId
 import dev.usbharu.hideout.core.domain.model.media.MediaId
 import dev.usbharu.hideout.core.infrastructure.other.TwitterSnowflakeIdGenerateService
@@ -29,13 +30,14 @@ object TestPostFactory {
         visibleActors: List<Long> = emptyList(),
         hide: Boolean = false,
         moveTo: Long? = null,
+        emojiIds: List<Long> = emptyList(),
     ): Post {
         return Post(
             PostId(id),
             ActorId(actorId),
             instanceId = InstanceId(instanceId),
             overview = overview?.let { PostOverview(it) },
-            content = PostContent(content, content, emptyList()),
+            content = PostContent(content, content, emojiIds.map { CustomEmojiId(it) }),
             createdAt = createdAt,
             visibility = visibility,
             url = url,
diff --git a/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepositoryTest.kt b/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepositoryTest.kt
new file mode 100644
index 00000000..50f28889
--- /dev/null
+++ b/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedPostRepositoryTest.kt
@@ -0,0 +1,527 @@
+package dev.usbharu.hideout.core.infrastructure.exposedrepository
+
+import com.ninja_squad.dbsetup_kotlin.dbSetup
+import dev.usbharu.hideout.core.domain.model.actor.ActorId
+import dev.usbharu.hideout.core.domain.model.emoji.CustomEmojiId
+import dev.usbharu.hideout.core.domain.model.instance.InstanceId
+import dev.usbharu.hideout.core.domain.model.media.MediaId
+import dev.usbharu.hideout.core.domain.model.post.*
+import dev.usbharu.hideout.core.domain.shared.domainevent.DomainEventPublisher
+import dev.usbharu.hideout.core.infrastructure.exposed.PostQueryMapper
+import dev.usbharu.hideout.core.infrastructure.exposed.PostResultRowMapper
+import kotlinx.coroutines.test.runTest
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.db.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.extension.ExtendWith
+import org.mockito.InjectMocks
+import org.mockito.Mock
+import org.mockito.Spy
+import org.mockito.junit.jupiter.MockitoExtension
+import utils.*
+import java.net.URI
+import java.sql.Timestamp
+import java.time.Instant
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import kotlin.test.assertNull
+
+@ExtendWith(MockitoExtension::class)
+class ExposedPostRepositoryTest : AbstractRepositoryTest(Posts) {
+
+    @InjectMocks
+    lateinit var repository: ExposedPostRepository
+
+    @Mock
+    lateinit var domainEventPublisher: DomainEventPublisher
+
+    @Spy
+    val postQueryMapper = PostQueryMapper(PostResultRowMapper())
+
+    @Test
+    fun save_idが同じレコードがない場合はinsert() = runTest {
+        dbSetup(to = dataSource) {
+            execute(disableReferenceIntegrityConstraints)
+            insertInto("public.actors") {
+                columns(Actors.columns)
+                values(
+                    1,
+                    "b",
+                    "test-hideout-dev.usbharu.dev",
+                    "b",
+                    "",
+                    "https://test-hideout-dev.usbharu.dev/users/b/inbox",
+                    "https://test-hideout-dev.usbharu.dev/users/b/outbox",
+                    "https://test-hideout-dev.usbharu.dev/users/b",
+                    "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyuMjzmQBsSxzK6NkOpZh\nWuohaUbzCY7AafXt+3+tiL6LulYNg/YRIqKc7Q/vTJE6CHrqo7RA/OqYrSMxF/LC\nf8aX5aHwJE1A2gSgCcs1IL5GJaYRlp4NcuazpBC9NO4xIrvH//jcVnZGXGWsCbls\nHXZGZdurWOF0Bl3mYN8CdupVumrGuOPs+wbI/Gh+OHw611TcXMyAwFwU2UjvPEgk\nEACW9OvJaq1K40jVCAa3b1nXt53vlXXZEUlL78L0C9xuFbJG0K/GKMBN44GyftJO\nhA95Rf1Nhd0vKDLBiRocGcARmBo9PaSCR5651gJEk5/wfLUnNAf0xj3R8LBoOhnT\nCQIDAQAB\n-----END PUBLIC KEY-----",
+                    "-----BEGIN PRIVATE KEY-----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\nZPFif8bVfcZqeimxrFaV6YI=\n-----END PRIVATE KEY-----",
+                    "2024-09-09 17:12:03.941339",
+                    "https://test-hideout-dev.usbharu.dev/users/b#main-key",
+                    "https://test-hideout-dev.usbharu.dev/users/b/following",
+                    "https://test-hideout-dev.usbharu.dev/users/b/followers",
+                    1,
+                    false,
+                    0,
+                    0,
+                    0,
+                    null,
+                    "2024-09-09 17:12:03.941339",
+                    false,
+                    null,
+                    "",
+                    false,
+                    null,
+                    null
+                )
+                values(
+                    2,
+                    "a",
+                    "test-hideout-dev.usbharu.dev",
+                    "a",
+                    "",
+                    "https://test-hideout-dev.usbharu.dev/users/a/inbox",
+                    "https://test-hideout-dev.usbharu.dev/users/a/outbox",
+                    "https://test-hideout-dev.usbharu.dev/users/a",
+                    "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyuMjzmQBsSxzK6NkOpZh\nWuohaUbzCY7AafXt+3+tiL6LulYNg/YRIqKc7Q/vTJE6CHrqo7RA/OqYrSMxF/LC\nf8aX5aHwJE1A2gSgCcs1IL5GJaYRlp4NcuazpBC9NO4xIrvH//jcVnZGXGWsCbls\nHXZGZdurWOF0Bl3mYN8CdupVumrGuOPs+wbI/Gh+OHw611TcXMyAwFwU2UjvPEgk\nEACW9OvJaq1K40jVCAa3b1nXt53vlXXZEUlL78L0C9xuFbJG0K/GKMBN44GyftJO\nhA95Rf1Nhd0vKDLBiRocGcARmBo9PaSCR5651gJEk5/wfLUnNAf0xj3R8LBoOhnT\nCQIDAQAB\n-----END PUBLIC KEY-----",
+                    "-----BEGIN PRIVATE KEY-----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\nZPFif8bVfcZqeimxrFaV6YI=\n-----END PRIVATE KEY-----",
+                    "2024-09-09 17:12:03.941339",
+                    "https://test-hideout-dev.usbharu.dev/users/a#main-key",
+                    "https://test-hideout-dev.usbharu.dev/users/a/following",
+                    "https://test-hideout-dev.usbharu.dev/users/a/followers",
+                    1,
+                    false,
+                    0,
+                    0,
+                    0,
+                    null,
+                    "2024-09-09 17:12:03.941339",
+                    false,
+                    null,
+                    "",
+                    false,
+                    null,
+                    null
+                )
+            }
+            insertInto(Instance.tableName) {
+                columns(Instance.columns)
+                values(
+                    1,
+                    "system",
+                    "",
+                    "https://example.com",
+                    "",
+                    null,
+                    "",
+                    "",
+                    false,
+                    false,
+                    "",
+                    "2024-09-10 16:59:50.160202"
+                )
+            }
+            insertInto("public.media") {
+                columns(Media.columns)
+                values(
+                    3,
+                    "pnc__picked_media_256f8e6d-68cd-4a76-bb38-57e35f6ca8c6.jpg",
+                    "http://localhost:8081/files/18330354358862827520.jpeg",
+                    null,
+                    "http://localhost:8081/files/thumbn3ail-1833054358862827520.jpeg",
+                    "Image",
+                    null,
+                    "image/jpeg",
+                    null,
+                    1
+                )
+                values(
+                    2,
+                    "pnc__picked_media_256f8e6d-68cd-4a76-bb38-57e35f6ca8c6.jpg",
+                    "http://localhost:8081/files/18330545358862827520.jpeg",
+                    "http://localhost:8081/files/183305453584862827520.jpeg",
+                    null,
+                    "Image",
+                    "U\$JuAZWBxut7~qoLoft6j]t7Rjj[RjayWBay",
+                    "image/jpeg",
+                    null,
+                    1
+                )
+            }
+            insertInto(CustomEmojis.tableName) {
+                columns(CustomEmojis.columns)
+                values(
+                    4,
+                    "emoji",
+                    "example.com",
+                    1,
+                    "https://example.com",
+                    null,
+                    "2024-09-09 17:12:03.941339"
+                )
+                values(
+                    5,
+                    "emoji2",
+                    "example.com",
+                    1,
+                    "https://example.com/2",
+                    "test",
+                    "2024-09-09 17:12:03.941339"
+                )
+            }
+            execute(enableReferenceIntegrityConstraints)
+        }.launch()
+
+        val post = TestPostFactory.create(
+            id = 1,
+            createdAt = Instant.parse("2021-01-01T00:00:00Z"),
+            mediaIds = listOf(2, 3),
+            emojiIds = listOf(4, 5),
+            visibility = Visibility.DIRECT,
+            visibleActors = listOf(1, 2)
+        )
+        repository.save(post)
+
+        assertThat(assertTable)
+            .row(0)
+            .isEqualTo(Posts.id, post.id.id)
+            .isEqualTo(Posts.actorId, post.actorId.id)
+            .isEqualTo(Posts.instanceId, post.instanceId.instanceId)
+            .isEqualTo(Posts.overview, post.overview?.overview)
+            .isEqualTo(Posts.content, post.content.content)
+            .isEqualTo(Posts.text, post.text)
+            .value(Posts.createdAt).isEqualTo(Timestamp.from(post.createdAt))
+            .isEqualTo(Posts.visibility, post.visibility.name)
+            .value(Posts.url).isEqualTo(post.url.toString())
+            .value(Posts.repostId).isEqualTo(post.repostId?.id)
+            .value(Posts.replyId).isEqualTo(post.replyId?.id)
+            .isEqualTo(Posts.sensitive, post.sensitive)
+            .value(Posts.apId).isEqualTo(post.apId.toString())
+            .isEqualTo(Posts.deleted, post.deleted)
+            .isEqualTo(Posts.hide, post.hide)
+            .value(Posts.moveTo).isEqualTo(post.moveTo?.id)
+
+        assertThat(getTable(PostsMedia.tableName))
+            .row(0)
+            .value(PostsMedia.postId).isEqualTo(post.id.id)
+            .value(PostsMedia.mediaId).isEqualTo(2)
+            .row(1)
+            .value(PostsMedia.postId).isEqualTo(post.id.id)
+            .value(PostsMedia.mediaId).isEqualTo(3)
+
+        assertThat(getTable(PostsEmojis.tableName))
+            .row(0)
+            .value(PostsEmojis.postId).isEqualTo(post.id.id)
+            .value(PostsEmojis.emojiId).isEqualTo(4)
+            .row(1)
+            .value(PostsEmojis.postId).isEqualTo(post.id.id)
+            .value(PostsEmojis.emojiId).isEqualTo(5)
+
+        assertThat(getTable(PostsVisibleActors.tableName))
+            .row(0)
+            .value(PostsVisibleActors.postId).isEqualTo(post.id.id)
+            .value(PostsVisibleActors.actorId).isEqualTo(1)
+            .row(1)
+            .value(PostsVisibleActors.postId).isEqualTo(post.id.id)
+            .value(PostsVisibleActors.actorId).isEqualTo(2)
+    }
+
+    @Test
+    fun save_idが同じレコードがある場合はupdate() = runTest {
+        dbSetup(to = dataSource) {
+            execute(disableReferenceIntegrityConstraints)
+            insertInto(Instance.tableName) {
+                columns(Instance.columns)
+                values(
+                    1,
+                    "system",
+                    "",
+                    "https://example.com",
+                    "",
+                    null,
+                    "",
+                    "",
+                    false,
+                    false,
+                    "",
+                    "2024-09-10 16:59:50.160202"
+                )
+            }
+            insertInto("public.posts") {
+                columns(Posts.columns)
+                values(
+                    1,
+                    1832779978794602496,
+                    1832779642545639424,
+                    null,
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    2,
+                    2,
+                    false,
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    false,
+                    false,
+                    null
+                )
+            }
+        }.launch()
+
+        val post = TestPostFactory.create(
+            id = 1,
+            instanceId = 1,
+            overview = "aaaaaaaa",
+            createdAt = Instant.parse("2021-01-01T00:00:00Z"),
+            replyId = 2,
+            repostId = 2,
+            moveTo = 2
+        )
+
+        repository.save(post)
+
+        assertThat(assertTable)
+            .row(0)
+            .isEqualTo(Posts.id, post.id.id)
+            .isEqualTo(Posts.actorId, post.actorId.id)
+            .isEqualTo(Posts.instanceId, post.instanceId.instanceId)
+            .isEqualTo(Posts.overview, post.overview?.overview)
+            .isEqualTo(Posts.content, post.content.content)
+            .isEqualTo(Posts.text, post.text)
+            .value(Posts.createdAt).isEqualTo(Timestamp.from(post.createdAt))
+            .isEqualTo(Posts.visibility, post.visibility.name)
+            .value(Posts.url).isEqualTo(post.url.toString())
+            .value(Posts.repostId).isEqualTo(post.repostId?.id)
+            .value(Posts.replyId).isEqualTo(post.replyId?.id)
+            .isEqualTo(Posts.sensitive, post.sensitive)
+            .value(Posts.apId).isEqualTo(post.apId.toString())
+            .isEqualTo(Posts.deleted, post.deleted)
+            .isEqualTo(Posts.hide, post.hide)
+            .value(Posts.moveTo).isEqualTo(post.moveTo?.id)
+    }
+
+    @Test
+    fun findById_指定したIdがある場合は返す() = runTest {
+        dbSetup(to = dataSource) {
+            execute(disableReferenceIntegrityConstraints)
+            insertInto("public.posts") {
+                columns(Posts.columns)
+                values(
+                    1,
+                    1832779978794602496,
+                    1832779642545639424,
+                    "",
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    null,
+                    null,
+                    false,
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    false,
+                    false,
+                    null
+                )
+            }
+            insertInto(PostsMedia.tableName) {
+                columns(PostsMedia.columns)
+                values(1, 2)
+            }
+            insertInto(PostsEmojis.tableName) {
+                columns(PostsEmojis.columns)
+                values(1, 3)
+            }
+            insertInto(PostsVisibleActors.tableName) {
+                columns(PostsVisibleActors.columns)
+                values(1, 4)
+            }
+        }.launch()
+
+        val actual = repository.findById(PostId(1))
+
+        val expect = Post(
+            id = PostId(1),
+            actorId = ActorId(1832779978794602496),
+            instanceId = InstanceId(1832779642545639424),
+            overview = PostOverview(""),
+            content = PostContent("test", "<p>test</p>", listOf(CustomEmojiId(3))),
+            createdAt = Instant.parse("2020-01-01T00:00:00Z"),
+            visibility = Visibility.PUBLIC,
+            url = URI.create("http://localhost:8081/users/a/posts/1832779994749734912"),
+            repostId = null,
+            replyId = null,
+            sensitive = false,
+            apId = URI.create("http://localhost:8081/users/a/posts/1832779994749734912"),
+            deleted = false,
+            mediaIds = listOf(MediaId(2)),
+            visibleActors = setOf(ActorId(4)),
+            hide = false, moveTo = null
+        )
+
+        assertNotNull(actual)
+        assertEquals(expect, actual)
+        assertEquals(expect.id, actual.id)
+        assertEquals(expect.actorId, actual.actorId)
+        assertEquals(expect.instanceId, actual.instanceId)
+        assertEquals(expect.overview, actual.overview)
+        assertEquals(expect.content, actual.content)
+        assertEquals(expect.createdAt, actual.createdAt)
+        assertEquals(expect.visibility, actual.visibility)
+        assertEquals(expect.url, actual.url)
+        assertEquals(expect.repostId, actual.repostId)
+        assertEquals(expect.replyId, actual.replyId)
+        assertEquals(expect.sensitive, actual.sensitive)
+        assertEquals(expect.apId, actual.apId)
+        assertEquals(expect.deleted, actual.deleted)
+        assertEquals(expect.mediaIds, actual.mediaIds)
+        assertEquals(expect.visibleActors, actual.visibleActors)
+        assertEquals(expect.hide, actual.hide)
+
+    }
+
+    @Test
+    fun findById_指定したIdで存在しないとnull() = runTest {
+        assertNull(repository.findById(PostId(1)))
+    }
+
+    @Test
+    fun findAllById_指定されたIdすべて返す() = runTest {
+        dbSetup(to = dataSource) {
+            execute(disableReferenceIntegrityConstraints)
+            insertInto("public.posts") {
+                columns(Posts.columns)
+                values(
+                    1,
+                    1832779978794602496,
+                    1832779642545639424,
+                    null,
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    2,
+                    2,
+                    false,
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    false,
+                    false,
+                    null
+                )
+                values(
+                    2,
+                    1832779978794602496,
+                    1832779642545639424,
+                    null,
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/18327739994749734912",
+                    null,
+                    null,
+                    false,
+                    "http://localhost:8081/users/a/posts/18327793994749734912",
+                    false,
+                    false,
+                    null
+                )
+                values(
+                    3,
+                    1832779978794602496,
+                    1832779642545639424,
+                    "",
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/183277399947494734912",
+                    null,
+                    null,
+                    false,
+                    "http://localhost:8081/users/a/posts/183277939947493734912",
+                    false,
+                    false,
+                    2
+                )
+            }
+        }.launch()
+
+        val findAllById = repository.findAllById(listOf(PostId(1), PostId(3)))
+
+        assertThat(findAllById)
+            .hasSize(2)
+    }
+
+    @Test
+    fun findByActorId_指定されたActorIdすべて返す() = runTest {
+        dbSetup(to = dataSource) {
+            execute(disableReferenceIntegrityConstraints)
+            insertInto("public.posts") {
+                columns(Posts.columns)
+                values(
+                    1,
+                    1,
+                    1832779642545639424,
+                    null,
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    2,
+                    2,
+                    false,
+                    "http://localhost:8081/users/a/posts/1832779994749734912",
+                    false,
+                    false,
+                    null
+                )
+                values(
+                    2,
+                    2,
+                    1832779642545639424,
+                    null,
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/18327739994749734912",
+                    null,
+                    null,
+                    false,
+                    "http://localhost:8081/users/a/posts/18327793994749734912",
+                    false,
+                    false,
+                    null
+                )
+                values(
+                    3,
+                    1,
+                    1832779642545639424,
+                    "",
+                    "<p>test</p>",
+                    "test",
+                    Timestamp.from(Instant.parse("2020-01-01T00:00:00Z")),
+                    "PUBLIC",
+                    "http://localhost:8081/users/a/posts/183277399947494734912",
+                    null,
+                    null,
+                    false,
+                    "http://localhost:8081/users/a/posts/183277939947493734912",
+                    false,
+                    false,
+                    2
+                )
+            }
+        }.launch()
+
+        val findAllById = repository.findByActorId(ActorId(1))
+
+        assertThat(findAllById)
+            .hasSize(2)
+    }
+}
\ No newline at end of file