diff --git a/app/src/main/java/kr/co/vividnext/sodalive/v2/live/action/LiveCreationResult.kt b/app/src/main/java/kr/co/vividnext/sodalive/v2/live/action/LiveCreationResult.kt
new file mode 100644
index 00000000..cf60c436
--- /dev/null
+++ b/app/src/main/java/kr/co/vividnext/sodalive/v2/live/action/LiveCreationResult.kt
@@ -0,0 +1,22 @@
+package kr.co.vividnext.sodalive.v2.live.action
+
+sealed interface LiveCreationResult {
+    data object Ignored : LiveCreationResult
+
+    data object Created : LiveCreationResult
+
+    data object RefreshOnly : LiveCreationResult
+
+    data class Enter(val roomId: Long) : LiveCreationResult
+}
+
+fun resolveLiveCreationResult(
+    isSuccessful: Boolean,
+    roomId: Long?,
+    channelName: String?
+): LiveCreationResult = when {
+    !isSuccessful -> LiveCreationResult.Ignored
+    channelName == null -> LiveCreationResult.Created
+    roomId != null && roomId > 0L -> LiveCreationResult.Enter(roomId)
+    else -> LiveCreationResult.RefreshOnly
+}
diff --git a/app/src/test/java/kr/co/vividnext/sodalive/v2/live/action/LiveActionCoordinatorUiGateTest.kt b/app/src/test/java/kr/co/vividnext/sodalive/v2/live/action/LiveActionCoordinatorUiGateTest.kt
new file mode 100644
index 00000000..93008234
--- /dev/null
+++ b/app/src/test/java/kr/co/vividnext/sodalive/v2/live/action/LiveActionCoordinatorUiGateTest.kt
@@ -0,0 +1,153 @@
+package kr.co.vividnext.sodalive.v2.live.action
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class LiveActionCoordinatorUiGateTest {
+
+    @Test
+    fun `ShowDetail은 adult guard와 오디오 중단보다 unavailable을 먼저 실행한다`() {
+        val events = mutableListOf<String>()
+
+        runLiveEntryDecisionFlow(
+            decision = LiveEntryDecision.ShowDetail,
+            onShowDetail = { events += "unavailable" },
+            ensureAdultAccess = { allowed ->
+                events += "adult"
+                allowed()
+            },
+            onAllowedEntry = { events += "entry" }
+        )
+
+        assertEquals(listOf("unavailable"), events)
+    }
+
+    @Test
+    fun `입장 가능 결정은 adult guard 이후에만 오디오 중단과 입장 처리를 실행한다`() {
+        val events = mutableListOf<String>()
+
+        runLiveEntryDecisionFlow(
+            decision = LiveEntryDecision.Enter,
+            onShowDetail = { events += "unavailable" },
+            ensureAdultAccess = { allowed ->
+                events += "adult"
+                allowed()
+            },
+            onAllowedEntry = {
+                events += "audio"
+                events += "entry"
+            }
+        )
+
+        assertEquals(listOf("adult", "audio", "entry"), events)
+    }
+
+    @Test
+    fun `adult guard가 거부되면 오디오 중단과 입장 처리를 실행하지 않는다`() {
+        val events = mutableListOf<String>()
+
+        runLiveEntryDecisionFlow(
+            decision = LiveEntryDecision.Enter,
+            onShowDetail = { events += "unavailable" },
+            ensureAdultAccess = { events += "adult" },
+            onAllowedEntry = {
+                events += "audio"
+                events += "entry"
+            }
+        )
+
+        assertEquals(listOf("adult"), events)
+    }
+
+    @Test
+    fun `UI 결과 predicate는 Activity stateSaved 호출 화면 predicate를 모두 결합한다`() {
+        assertFalse(
+            canHandleLiveActionUiResult(
+                isActivityFinishing = true,
+                isActivityDestroyed = false,
+                isStateSaved = false,
+                canHandleResult = { true }
+            )
+        )
+        assertFalse(
+            canHandleLiveActionUiResult(
+                isActivityFinishing = false,
+                isActivityDestroyed = true,
+                isStateSaved = false,
+                canHandleResult = { true }
+            )
+        )
+        assertFalse(
+            canHandleLiveActionUiResult(
+                isActivityFinishing = false,
+                isActivityDestroyed = false,
+                isStateSaved = true,
+                canHandleResult = { true }
+            )
+        )
+        assertFalse(
+            canHandleLiveActionUiResult(
+                isActivityFinishing = false,
+                isActivityDestroyed = false,
+                isStateSaved = false,
+                canHandleResult = { false }
+            )
+        )
+        assertTrue(
+            canHandleLiveActionUiResult(
+                isActivityFinishing = false,
+                isActivityDestroyed = false,
+                isStateSaved = false,
+                canHandleResult = { true }
+            )
+        )
+    }
+
+    @Test
+    fun `UI side effect는 lifecycle predicate가 실패하면 실행하지 않는다`() {
+        var sideEffectCount = 0
+
+        val executed = runLiveActionUiSideEffect(canHandleResult = { false }) {
+            sideEffectCount += 1
+        }
+
+        assertFalse(executed)
+        assertEquals(0, sideEffectCount)
+    }
+
+    @Test
+    fun `UI side effect는 lifecycle predicate가 통과하면 한 번 실행한다`() {
+        var sideEffectCount = 0
+
+        val executed = runLiveActionUiSideEffect(canHandleResult = { true }) {
+            sideEffectCount += 1
+        }
+
+        assertTrue(executed)
+        assertEquals(1, sideEffectCount)
+    }
+
+    @Test
+    fun `상세 표시는 lifecycle stateSaved 기존 tag fragment를 모두 검사한다`() {
+        assertFalse(
+            canShowLiveRoomDetail(
+                canHandleUiResult = { false },
+                existingDetailFragment = null
+            )
+        )
+        assertFalse(
+            canShowLiveRoomDetail(
+                canHandleUiResult = { true },
+                existingDetailFragment = Any()
+            )
+        )
+        assertTrue(
+            canShowLiveRoomDetail(
+                canHandleUiResult = { true },
+                existingDetailFragment = null
+            )
+        )
+    }
+}
diff --git a/app/src/test/java/kr/co/vividnext/sodalive/v2/live/action/LiveActionsTest.kt b/app/src/test/java/kr/co/vividnext/sodalive/v2/live/action/LiveActionsTest.kt
new file mode 100644
index 00000000..13f3a020
--- /dev/null
+++ b/app/src/test/java/kr/co/vividnext/sodalive/v2/live/action/LiveActionsTest.kt
@@ -0,0 +1,45 @@
+package kr.co.vividnext.sodalive.v2.live.action
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class LiveActionsTest {
+
+    @Test
+    fun `취소 또는 실패한 생성 결과는 무시한다`() {
+        assertEquals(
+            LiveCreationResult.Ignored,
+            resolveLiveCreationResult(isSuccessful = false, roomId = 1L, channelName = "channel")
+        )
+    }
+
+    @Test
+    fun `channel과 유효한 room ID가 있는 생성 결과는 즉시 입장한다`() {
+        assertEquals(
+            LiveCreationResult.Enter(roomId = 1L),
+            resolveLiveCreationResult(isSuccessful = true, roomId = 1L, channelName = "channel")
+        )
+    }
+
+    @Test
+    fun `channel이 없으면 생성 완료만 알린다`() {
+        assertEquals(
+            LiveCreationResult.Created,
+            resolveLiveCreationResult(isSuccessful = true, roomId = 1L, channelName = null)
+        )
+    }
+
+    @Test
+    fun `channel은 있지만 room ID가 유효하지 않은 성공 결과도 Home refresh 대상이다`() {
+        listOf<Long?>(null, 0L, -1L).forEach { roomId ->
+            assertEquals(
+                LiveCreationResult.RefreshOnly,
+                resolveLiveCreationResult(
+                    isSuccessful = true,
+                    roomId = roomId,
+                    channelName = "channel"
+                )
+            )
+        }
+    }
+}