test: add talk config contract fixtures

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

@@ -0,0 +1,76 @@
+package ai.openclaw.app.voice
+
+import java.io.File
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.JsonPrimitive
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertNull
+import org.junit.Test
+
+@Serializable
+private data class TalkConfigContractFixture(
+  @SerialName("selectionCases") val selectionCases: List<SelectionCase>,
+) {
+  @Serializable
+  data class SelectionCase(
+    val id: String,
+    val defaultProvider: String,
+    val payloadValid: Boolean,
+    val expectedSelection: ExpectedSelection? = null,
+    val talk: JsonObject,
+  )
+
+  @Serializable
+  data class ExpectedSelection(
+    val provider: String,
+    val normalizedPayload: Boolean,
+    val voiceId: String? = null,
+  )
+}
+
+class TalkModeConfigContractTest {
+  private val json = Json { ignoreUnknownKeys = true }
+
+  @Test
+  fun selectionFixtures() {
+    for (fixture in loadFixtures().selectionCases) {
+      val selection = TalkModeManager.selectTalkProviderConfig(fixture.talk)
+      val expected = fixture.expectedSelection
+      if (expected == null) {
+        assertNull(fixture.id, selection)
+        continue
+      }
+      assertNotNull(fixture.id, selection)
+      assertEquals(fixture.id, expected.provider, selection?.provider)
+      assertEquals(fixture.id, expected.normalizedPayload, selection?.normalizedPayload)
+      assertEquals(
+        fixture.id,
+        expected.voiceId,
+        (selection?.config?.get("voiceId") as? JsonPrimitive)?.content,
+      )
+      assertEquals(fixture.id, true, fixture.payloadValid)
+    }
+  }
+
+  private fun loadFixtures(): TalkConfigContractFixture {
+    val fixturePath = findFixtureFile()
+    return json.decodeFromString(File(fixturePath).readText())
+  }
+
+  private fun findFixtureFile(): String {
+    val startDir = System.getProperty("user.dir") ?: error("user.dir unavailable")
+    var current = File(startDir).absoluteFile
+    while (true) {
+      val candidate = File(current, "test-fixtures/talk-config-contract.json")
+      if (candidate.exists()) {
+        return candidate.absolutePath
+      }
+      current = current.parentFile ?: break
+    }
+    error("talk-config-contract.json not found from $startDir")
+  }
+}