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feat: Add AAP session tests for AirPods Pro 2 USB-C
Add AirPodsPro2UsbcAapSessionTest with real captured bytes from a live device session (model A3048, Pixel 8, 2026-04-02). Covers handshake, device info, battery states, private keys, all Pro 2 USB-C settings (including ADAPTIVE ANC, VolumeSwipe, ConversationalAwareness), ear detection across 6 transitions, and unhandled messages. Also document ChargingState observations across models and EndCallMuteMic subtype variations in code comments.
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package eu.darken.capod.pods.core.apple.aap.devices.airpods
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import eu.darken.capod.pods.core.apple.PodModel
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import eu.darken.capod.pods.core.apple.aap.AapPodState
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import eu.darken.capod.pods.core.apple.aap.protocol.AapSetting
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import eu.darken.capod.pods.core.apple.aap.protocol.BaseAapSessionTest
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import io.kotest.matchers.collections.shouldContainExactly
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import io.kotest.matchers.nulls.shouldBeNull
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import io.kotest.matchers.shouldBe
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import org.junit.jupiter.api.Nested
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import org.junit.jupiter.api.Test
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/**
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* Tests the full AAP decode pipeline using real captured data from AirPods Pro 2 (USB-C).
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* Each test uses exact bytes observed on a live device via L2CAP SEQPACKET reads.
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*
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* Device: AirPods Pro 2 USB-C (model A3048, product ID 0x2420)
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* Phone: Pixel 8 (Android 17 Beta)
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* Captured: 2026-04-02
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*/
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class AirPodsPro2UsbcAapSessionTest : BaseAapSessionTest() {
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override val podModel = PodModel.AIRPODS_PRO2_USBC
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// ── Handshake ────────────────────────────────────────────
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@Test
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fun `handshake response - 18 bytes`() {
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val msg = aapMessage("01 00 04 00 00 00 01 00 03 00 00 00 00 00 00 00 00 00")
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msg.commandType shouldBe 0x0000
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msg.raw.size shouldBe 18
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msg.payload.size shouldBe 12
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}
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// ── Device Info ──────────────────────────────────────────
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@Test
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fun `device info - 232 bytes`() {
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val msg = aapMessage(
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"04 00 04 00 1D 00 02 DF 00 04 00",
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"41 69 72 50 6F 64 73 20 50 72 6F 00", // "AirPods Pro"
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"41 33 30 34 38 00", // "A3048"
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"41 70 70 6C 65 20 49 6E 63 2E 00", // "Apple Inc."
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"57 35 4A 37 4B 56 30 4E 30 34 00", // serial
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"38 31 2E 32 36 37 35 30 30 30 30 37 35 30 30 30 30 30 30 2E 36 30 38 32 00", // firmware
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"38 31 2E 32 36 37 35 30 30 30 30 37 35 30 30 30 30 30 30 2E 36 30 38 32 00",
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"31 2E 30 2E 30 00",
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"63 6F 6D 2E 61 70 70 6C 65 2E 61 63 63 65 73 73 6F 72 79 2E 75 70 64 61 74 65 72 2E 61 70 70 2E 37 31 00",
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"48 33 4B 4C 37 48 52 39 32 36 4A 59 00", // left serial
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"48 33 4B 4C 32 41 59 4C 32 36 4B 30 00", // right serial
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"38 34 35 34 34 38 30 00",
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"1F 3F B4 B7 E9 81 48 11 94 6B C2 6F 3C 5F 5A 34 0B AB 7E 42 AA BD F1 49 E3 A8 98 E7 81 D6 04 F5 68 1F",
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"31 36 39 37 34 38 30 32 31 31 00 31 36 39 37 34 38 30 32 31 31 00",
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)
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val info = profile.decodeDeviceInfo(msg)!!
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info.name shouldBe "AirPods Pro"
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info.modelNumber shouldBe "A3048"
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info.manufacturer shouldBe "Apple Inc."
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}
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// ── Battery ──────────────────────────────────────────────
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@Nested
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inner class BatterySessionTests {
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@Test
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fun `in case - pods CHARGING, case NOT_CHARGING`() {
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val r = profile.decodeBattery(aapMessage("04 00 04 00 04 00 03 02 01 64 01 01 04 01 64 01 01 08 01 52 02 01"))!!
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r[AapPodState.BatteryType.RIGHT]!!.let { it.percent shouldBe 1.0f; it.charging shouldBe AapPodState.ChargingState.CHARGING }
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r[AapPodState.BatteryType.LEFT]!!.let { it.percent shouldBe 1.0f; it.charging shouldBe AapPodState.ChargingState.CHARGING }
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r[AapPodState.BatteryType.CASE]!!.let { it.percent shouldBe 0.82f; it.charging shouldBe AapPodState.ChargingState.NOT_CHARGING }
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}
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@Test
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fun `out of case - pods NOT_CHARGING, case DISCONNECTED`() {
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val r = profile.decodeBattery(aapMessage("04 00 04 00 04 00 03 02 01 64 02 01 04 01 64 02 01 08 01 00 04 01"))!!
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r[AapPodState.BatteryType.RIGHT]!!.let { it.percent shouldBe 1.0f; it.charging shouldBe AapPodState.ChargingState.NOT_CHARGING }
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r[AapPodState.BatteryType.LEFT]!!.let { it.percent shouldBe 1.0f; it.charging shouldBe AapPodState.ChargingState.NOT_CHARGING }
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r[AapPodState.BatteryType.CASE]!!.charging shouldBe AapPodState.ChargingState.DISCONNECTED
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}
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@Test
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fun `back in case - pods CHARGING`() {
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val r = profile.decodeBattery(aapMessage("04 00 04 00 04 00 03 04 01 64 01 01 02 01 64 01 01 08 01 51 02 01"))!!
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r[AapPodState.BatteryType.LEFT]!!.let { it.percent shouldBe 1.0f; it.charging shouldBe AapPodState.ChargingState.CHARGING }
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r[AapPodState.BatteryType.RIGHT]!!.let { it.percent shouldBe 1.0f; it.charging shouldBe AapPodState.ChargingState.CHARGING }
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r[AapPodState.BatteryType.CASE]!!.let { it.percent shouldBe 0.81f; it.charging shouldBe AapPodState.ChargingState.NOT_CHARGING }
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}
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}
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// ── Private Keys ─────────────────────────────────────────
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@Test
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fun `private key response - 47 bytes with IRK and ENC`() {
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val result = profile.decodePrivateKeyResponse(
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aapMessage(
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"04 00 04 00 31 00 02 " +
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"01 00 10 00 A0 94 D4 BB 03 29 03 27 99 39 14 8D C4 64 60 95 " +
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"04 00 10 00 80 45 5C F4 F7 74 39 B8 4F AF 74 C8 4E 02 17 B7"
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)
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)!!
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result.irk!!.size shouldBe 16
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result.irk!![0] shouldBe 0xA0.toByte()
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result.encKey!!.size shouldBe 16
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result.encKey!![0] shouldBe 0x80.toByte()
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}
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// ── Settings Push ────────────────────────────────────────
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@Nested
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inner class SettingsSessionTests {
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@Test
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fun `ANC mode ON`() {
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val anc = decodeSetting<AapSetting.AncMode>("04 00 04 00 09 00 0D 02 00 00 00")
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anc.current shouldBe AapSetting.AncMode.Value.ON
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anc.supported shouldContainExactly listOf(
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AapSetting.AncMode.Value.ON,
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AapSetting.AncMode.Value.TRANSPARENCY,
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AapSetting.AncMode.Value.ADAPTIVE
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)
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}
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@Test fun `press hold duration DEFAULT`() {
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decodeSetting<AapSetting.PressHoldDuration>("04 00 04 00 09 00 18 00 00 00 00").value shouldBe AapSetting.PressHoldDuration.Value.DEFAULT
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}
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@Test fun `press speed DEFAULT`() {
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decodeSetting<AapSetting.PressSpeed>("04 00 04 00 09 00 17 00 00 00 00").value shouldBe AapSetting.PressSpeed.Value.DEFAULT
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}
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@Test fun `volume swipe ON`() {
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decodeSetting<AapSetting.VolumeSwipe>("04 00 04 00 09 00 25 01 00 00 00").enabled shouldBe true
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}
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@Test fun `volume swipe length DEFAULT`() {
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decodeSetting<AapSetting.VolumeSwipeLength>("04 00 04 00 09 00 23 00 00 00 00").value shouldBe AapSetting.VolumeSwipeLength.Value.DEFAULT
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}
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@Test fun `tone volume 80`() {
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decodeSetting<AapSetting.ToneVolume>("04 00 04 00 09 00 1F 50 50 00 00").level shouldBe 0x50
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}
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@Test fun `end call mute mic - subtype 0x00`() {
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decodeSetting<AapSetting.EndCallMuteMic>("04 00 04 00 09 00 24 00 03 00 00").let {
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it.muteMic shouldBe AapSetting.EndCallMuteMic.MuteMicMode.DOUBLE_PRESS
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it.endCall shouldBe AapSetting.EndCallMuteMic.EndCallMode.SINGLE_PRESS
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}
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}
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@Test fun `conversational awareness OFF`() {
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decodeSetting<AapSetting.ConversationalAwareness>("04 00 04 00 09 00 28 02 00 00 00").enabled shouldBe false
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}
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@Test fun `personalized volume OFF`() {
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decodeSetting<AapSetting.PersonalizedVolume>("04 00 04 00 09 00 26 02 00 00 00").enabled shouldBe false
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}
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@Test fun `adaptive audio noise 50`() {
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decodeSetting<AapSetting.AdaptiveAudioNoise>("04 00 04 00 09 00 2E 32 00 00 00").level shouldBe 0x32
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}
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@Test fun `NC one airpod OFF`() {
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decodeSetting<AapSetting.NcWithOneAirPod>("04 00 04 00 09 00 1B 02 00 00 00").enabled shouldBe false
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}
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}
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// ── ANC Mode Switching (verified audible) ────────────────
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@Nested
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inner class AncModeSwitchingTests {
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@Test fun `device echoes TRANSPARENCY`() {
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decodeSetting<AapSetting.AncMode>("04 00 04 00 09 00 0D 03 00 00 00").current shouldBe AapSetting.AncMode.Value.TRANSPARENCY
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}
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@Test fun `device echoes OFF`() {
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decodeSetting<AapSetting.AncMode>("04 00 04 00 09 00 0D 01 00 00 00").current shouldBe AapSetting.AncMode.Value.OFF
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}
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}
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// ── Primary Pod (0x08) — real captures ─────────────────────
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@Nested
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inner class PrimaryPodSessionTests {
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@Test fun `primary pod RIGHT`() {
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decodeSetting<AapSetting.PrimaryPod>("04 00 04 00 08 00 02 00 01 00").pod shouldBe AapSetting.PrimaryPod.Pod.RIGHT
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}
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}
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// ── Ear Detection (0x06) — real captures ──────────────────
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@Nested
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inner class EarDetectionSessionTests {
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@Test fun `both pods in case`() {
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val ed = decodeSetting<AapSetting.EarDetection>("04 00 04 00 06 00 02 02")
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ed.primaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_CASE
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ed.secondaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_CASE
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ed.isEitherPodInEar shouldBe false
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}
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@Test fun `pod taken from case`() {
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val ed = decodeSetting<AapSetting.EarDetection>("04 00 04 00 06 00 01 02")
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ed.primaryPod shouldBe AapSetting.EarDetection.PodPlacement.NOT_IN_EAR
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ed.secondaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_CASE
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ed.isEitherPodInEar shouldBe false
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}
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@Test fun `one pod in ear, other in case`() {
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val ed = decodeSetting<AapSetting.EarDetection>("04 00 04 00 06 00 00 02")
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ed.primaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_EAR
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ed.secondaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_CASE
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ed.isEitherPodInEar shouldBe true
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}
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@Test fun `one pod in ear, other not in ear`() {
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val ed = decodeSetting<AapSetting.EarDetection>("04 00 04 00 06 00 00 01")
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ed.primaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_EAR
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ed.secondaryPod shouldBe AapSetting.EarDetection.PodPlacement.NOT_IN_EAR
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ed.isEitherPodInEar shouldBe true
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}
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@Test fun `both pods in ear`() {
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val ed = decodeSetting<AapSetting.EarDetection>("04 00 04 00 06 00 00 00")
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ed.primaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_EAR
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ed.secondaryPod shouldBe AapSetting.EarDetection.PodPlacement.IN_EAR
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ed.isEitherPodInEar shouldBe true
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}
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@Test fun `both pods not in ear (on desk)`() {
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val ed = decodeSetting<AapSetting.EarDetection>("04 00 04 00 06 00 01 01")
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ed.primaryPod shouldBe AapSetting.EarDetection.PodPlacement.NOT_IN_EAR
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ed.secondaryPod shouldBe AapSetting.EarDetection.PodPlacement.NOT_IN_EAR
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ed.isEitherPodInEar shouldBe false
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}
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}
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// ── Unhandled Messages ───────────────────────────────────
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@Nested
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inner class UnhandledMessageTests {
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@Test fun `cmd 0x002B init exchange`() {
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profile.decodeSetting(aapMessage("04 00 04 00 2B 00 01 22 00 F3 2F 47 00 00 00 00 00 52 FD 1C 00 00 00 00 00 7C D1 56 70 3F 18 05 00 00 E1 EE 3E 00 00 00 00 00 39 1B 4C 60 45 94 09 00 00")).shouldBeNull()
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}
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@Test
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fun `unknown settings IDs return null`() {
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val unknownIds = listOf(0x29, 0x2C, 0x2F, 0x33, 0x35, 0x3E)
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for (id in unknownIds) {
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profile.decodeSetting(settingsMessage(id, 0x02)).shouldBeNull()
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}
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}
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}
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}
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