test(android): cover talk.speak playback helpers

apps/android/app/src/test/java/ai/openclaw/app/voice/TalkAudioPlayerTest.kt

@@ -0,0 +1,44 @@
+package ai.openclaw.app.voice
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class TalkAudioPlayerTest {
+  @Test
+  fun resolvesPcmPlaybackFromOutputFormat() {
+    val mode =
+      TalkAudioPlayer.resolvePlaybackMode(
+        outputFormat = "pcm_24000",
+        mimeType = null,
+        fileExtension = null,
+      )
+
+    assertEquals(TalkPlaybackMode.Pcm(sampleRate = 24_000), mode)
+  }
+
+  @Test
+  fun resolvesCompressedPlaybackFromMimeType() {
+    val mode =
+      TalkAudioPlayer.resolvePlaybackMode(
+        outputFormat = null,
+        mimeType = "audio/mpeg",
+        fileExtension = null,
+      )
+
+    assertEquals(TalkPlaybackMode.Compressed(fileExtension = ".mp3"), mode)
+  }
+
+  @Test
+  fun preservesProvidedExtensionForCompressedPlayback() {
+    val mode =
+      TalkAudioPlayer.resolvePlaybackMode(
+        outputFormat = null,
+        mimeType = "audio/webm",
+        fileExtension = "webm",
+      )
+
+    assertTrue(mode is TalkPlaybackMode.Compressed)
+    assertEquals(".webm", (mode as TalkPlaybackMode.Compressed).fileExtension)
+  }
+}

apps/android/app/src/test/java/ai/openclaw/app/voice/TalkSpeakClientTest.kt

@@ -0,0 +1,106 @@
+package ai.openclaw.app.voice
+
+import ai.openclaw.app.gateway.GatewayConnectErrorDetails
+import ai.openclaw.app.gateway.GatewaySession
+import kotlinx.coroutines.test.runTest
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class TalkSpeakClientTest {
+  @Test
+  fun buildsRequestFromDirective() {
+    val request =
+      TalkSpeakRequest.from(
+        text = "Hello from talk mode.",
+        directive =
+          TalkDirective(
+            voiceId = "voice-123",
+            modelId = "model-abc",
+            speed = 1.1,
+            rateWpm = 190,
+            stability = 0.5,
+            similarity = 0.7,
+            style = 0.2,
+            speakerBoost = true,
+            seed = 42,
+            normalize = "auto",
+            language = "en",
+            outputFormat = "pcm_24000",
+            latencyTier = 3,
+            once = true,
+          ),
+      )
+
+    assertEquals("Hello from talk mode.", request.text)
+    assertEquals("voice-123", request.voiceId)
+    assertEquals("model-abc", request.modelId)
+    assertEquals(1.1, request.speed)
+    assertEquals(190, request.rateWpm)
+    assertEquals(0.5, request.stability)
+    assertEquals(0.7, request.similarity)
+    assertEquals(0.2, request.style)
+    assertEquals(true, request.speakerBoost)
+    assertEquals(42L, request.seed)
+    assertEquals("auto", request.normalize)
+    assertEquals("en", request.language)
+    assertEquals("pcm_24000", request.outputFormat)
+    assertEquals(3, request.latencyTier)
+  }
+
+  @Test
+  fun fallsBackOnlyForUnavailableReasons() = runTest {
+    val client =
+      TalkSpeakClient(
+        requestDetailed = { _, _, _ ->
+          GatewaySession.RpcResult(
+            ok = false,
+            payloadJson = null,
+            error =
+              GatewaySession.ErrorShape(
+                code = "UNAVAILABLE",
+                message = "talk unavailable",
+                details =
+                  GatewayConnectErrorDetails(
+                    code = null,
+                    canRetryWithDeviceToken = false,
+                    recommendedNextStep = null,
+                    reason = "talk_unconfigured",
+                  ),
+              ),
+          )
+        },
+      )
+
+    val result = client.synthesize(text = "Hello", directive = null)
+    assertTrue(result is TalkSpeakResult.FallbackToLocal)
+  }
+
+  @Test
+  fun doesNotFallBackForSynthesisFailure() = runTest {
+    val client =
+      TalkSpeakClient(
+        requestDetailed = { _, _, _ ->
+          GatewaySession.RpcResult(
+            ok = false,
+            payloadJson = null,
+            error =
+              GatewaySession.ErrorShape(
+                code = "UNAVAILABLE",
+                message = "provider failed",
+                details =
+                  GatewayConnectErrorDetails(
+                    code = null,
+                    canRetryWithDeviceToken = false,
+                    recommendedNextStep = null,
+                    reason = "synthesis_failed",
+                  ),
+              ),
+          )
+        },
+      )
+
+    val result = client.synthesize(text = "Hello", directive = null)
+    assertTrue(result is TalkSpeakResult.Failure)
+  }
+}