feat: add streaming cloud ASR, polish routing, and settings card layout

Unify Bailian/Volcengine/OpenAI realtime streaming, ABE polish routing with fun styles, and a shared card-page Settings hierarchy; bump to 1.1 (build 32).
2026-07-28 20:25:17 +08:00
parent 956331a2af
commit d656bac8c3
58 changed files with 4153 additions and 1396 deletions
@@ -0,0 +1,318 @@
+// ChunkedUtterancePipelineTests.swift
+// OSGKeyboardExtTests
+//
+// Hostless Shared-pipeline tests (no OSGKeyboard.app TEST_HOST).
+// Durations are seconds — at sampleRate 1000, 0.01s == 10 samples.
+
+import XCTest
+import os
+@testable import OSGKeyboardShared
+
+private struct StubChunkASR: ASRService, @unchecked Sendable {
+    let labels: @Sendable ([Float]) -> String
+
+    func transcribe(
+        stream: AsyncStream<AudioBufferSnapshot>,
+        locale: Locale
+    ) -> AsyncStream<ASREvent> {
+        AsyncStream { $0.finish() }
+    }
+
+    func cancel() {}
+
+    func transcribeChunk(samples: [Float], locale: Locale) async -> ASRChunkResult {
+        _ = locale
+        return .success(labels(samples))
+    }
+}
+
+final class ChunkedUtterancePipelineTests: XCTestCase {
+
+    /// 50-sample chunks @ 1 kHz; overlap / min-final expressed in seconds.
+    private func config(
+        maxChunkSeconds: TimeInterval = 0.05,
+        overlapSeconds: TimeInterval = 0,
+        minFinalSeconds: TimeInterval = 0.05
+    ) -> FlowUtteranceChunkConfig {
+        FlowUtteranceChunkConfig(
+            maxChunkDurationSeconds: maxChunkSeconds,
+            overlapDurationSeconds: overlapSeconds,
+            pauseExtensionMaxSeconds: 0,
+            pauseRMSThreshold: 1.0,
+            minFinalChunkDurationSeconds: minFinalSeconds,
+            sampleRate: 1_000
+        )
+    }
+
+    func testPipelineStitchesQueuedChunks() async {
+        let asr = StubChunkASR { samples in
+            samples.isEmpty ? "" : "seg\(samples.count)"
+        }
+        let pipeline = ChunkedUtterancePipeline(
+            asr: asr,
+            locale: Locale(identifier: "zh-Hans"),
+            config: config(overlapSeconds: 0)
+        )
+
+        let (stream, continuation) = AsyncStream<AudioBufferSnapshot>.makeStream()
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.finish()
+
+        let partialsLock = OSAllocatedUnfairLock(initialState: [String]())
+        let outcome = await pipeline.transcribe(stream: stream) { partial in
+            partialsLock.withLock { $0.append(partial) }
+        }
+        let partials = partialsLock.withLock { $0 }
+
+        guard case .success(let success) = outcome else {
+            return XCTFail("expected success, got \(outcome)")
+        }
+        XCTAssertTrue(success.text.contains("seg"))
+        XCTAssertFalse(partials.isEmpty)
+    }
+
+    func testPipelineDeliversPartialSuccessWhenOneChunkFails() async {
+        let pipeline = ChunkedUtterancePipeline(
+            asr: FailingSecondChunkASR(),
+            locale: Locale(identifier: "zh-Hans"),
+            config: config(overlapSeconds: 0)
+        )
+
+        let (stream, continuation) = AsyncStream<AudioBufferSnapshot>.makeStream()
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.finish()
+
+        let outcome = await pipeline.transcribe(stream: stream) { _ in }
+
+        guard case .success(let success) = outcome else {
+            return XCTFail("expected partial success, got \(outcome)")
+        }
+        XCTAssertFalse(success.text.isEmpty)
+        XCTAssertEqual(success.chunkWarnings.count, 1)
+    }
+
+    func testPipelineRetranscribesShortFinalChunkWithPriorOverlap() async {
+        // overlap = 10 samples, minFinal = 50 samples @ 1 kHz
+        let cfg = config(overlapSeconds: 0.01, minFinalSeconds: 0.05)
+        XCTAssertEqual(cfg.overlapSamples, 10)
+        XCTAssertEqual(cfg.minFinalChunkSamples, 50)
+
+        let asr = ShortFinalMergeStubASR()
+        let pipeline = ChunkedUtterancePipeline(
+            asr: asr,
+            locale: Locale(identifier: "zh-Hans"),
+            config: cfg
+        )
+
+        let (stream, continuation) = AsyncStream<AudioBufferSnapshot>.makeStream()
+        // 80 → emit 50 head; leftover 30. +20 → 50 exactly mid-chunk, then
+        // empty last marker OR short tail via exact boundary — use 80+15 so
+        // final leftover after mid split stays < minFinal.
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 15), sampleRate: 1_000))
+        continuation.finish()
+
+        let outcome = await pipeline.transcribe(stream: stream) { _ in }
+        guard case .success(let success) = outcome else {
+            return XCTFail("expected success, got \(outcome)")
+        }
+        XCTAssertTrue(success.text.contains("merged"), "got \(success.text)")
+    }
+
+    func testPipelineRetriesEmptyFinalChunkWithOverlap() async {
+        // Final chunk must be ≥ minFinal so emptyRetry runs (not preMerge).
+        let cfg = config(overlapSeconds: 0.01, minFinalSeconds: 0.01)
+        XCTAssertEqual(cfg.minFinalChunkSamples, 10)
+
+        let asr = EmptyFinalRetryStubASR()
+        let pipeline = ChunkedUtterancePipeline(
+            asr: asr,
+            locale: Locale(identifier: "zh-Hans"),
+            config: cfg
+        )
+
+        let (stream, continuation) = AsyncStream<AudioBufferSnapshot>.makeStream()
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.yield(AudioBufferSnapshot(samples: [Float](repeating: 0.1, count: 80), sampleRate: 1_000))
+        continuation.finish()
+
+        let outcome = await pipeline.transcribe(stream: stream) { _ in }
+        guard case .success(let success) = outcome else {
+            return XCTFail("expected success, got \(outcome)")
+        }
+        XCTAssertTrue(success.text.contains("recovered-tail"), "got \(success.text)")
+    }
+
+    /// Deterministic AC327 regression: short final → preMerge → empty must keep "head".
+    ///
+    /// Layout @ 1 kHz:
+    /// - maxChunk = 100, overlap = 20, minFinal = 80
+    /// - yield 100 → chunk0 ASR "head"
+    /// - yield 30 → final (30 < 80) → preMerge samples = 20+30
+    func testPipelineKeepsPriorTextWhenPreMergeReturnsEmpty() async {
+        let cfg = config(
+            maxChunkSeconds: 0.1,
+            overlapSeconds: 0.02,
+            minFinalSeconds: 0.08
+        )
+        XCTAssertEqual(cfg.maxChunkSamples, 100)
+        XCTAssertEqual(cfg.overlapSamples, 20)
+        XCTAssertEqual(cfg.minFinalChunkSamples, 80)
+
+        let asr = RecordingEmptyPreMergeASR()
+        let pipeline = ChunkedUtterancePipeline(
+            asr: asr,
+            locale: Locale(identifier: "zh-Hans"),
+            config: cfg
+        )
+
+        let (stream, continuation) = AsyncStream<AudioBufferSnapshot>.makeStream()
+        continuation.yield(
+            AudioBufferSnapshot(samples: [Float](repeating: 0.2, count: 100), sampleRate: 1_000)
+        )
+        continuation.yield(
+            AudioBufferSnapshot(samples: [Float](repeating: 0.2, count: 30), sampleRate: 1_000)
+        )
+        continuation.finish()
+
+        let outcome = await pipeline.transcribe(stream: stream) { _ in }
+        let sampleCounts = asr.sampleCountsSnapshot()
+
+        guard case .success(let success) = outcome else {
+            return XCTFail("expected success keeping prior text, got \(outcome); calls=\(sampleCounts)")
+        }
+        XCTAssertEqual(
+            sampleCounts.count,
+            2,
+            "expected head chunk + one preMerge call, got \(sampleCounts)"
+        )
+        XCTAssertEqual(sampleCounts[0], 100)
+        XCTAssertEqual(
+            sampleCounts[1],
+            50,
+            "preMerge should be overlap(20)+tail(30), got \(sampleCounts[1])"
+        )
+        XCTAssertTrue(
+            success.text.contains("head"),
+            "empty preMerge must not wipe prior segment, got \(success.text)"
+        )
+        XCTAssertFalse(success.text.isEmpty)
+    }
+}
+
+private struct FailingSecondChunkASR: ASRService, @unchecked Sendable {
+    private let callIndex = OSAllocatedUnfairLock(initialState: 0)
+
+    func transcribe(
+        stream: AsyncStream<AudioBufferSnapshot>,
+        locale: Locale
+    ) -> AsyncStream<ASREvent> {
+        AsyncStream { $0.finish() }
+    }
+
+    func cancel() {}
+
+    func transcribeChunk(samples: [Float], locale: Locale) async -> ASRChunkResult {
+        _ = locale
+        let current = callIndex.withLock { state in
+            let value = state
+            state += 1
+            return value
+        }
+        if current == 1 {
+            return .failure("simulated chunk error")
+        }
+        return .success("seg\(samples.count)")
+    }
+}
+
+private struct ShortFinalMergeStubASR: ASRService, @unchecked Sendable {
+    private let callIndex = OSAllocatedUnfairLock(initialState: 0)
+
+    func transcribe(
+        stream: AsyncStream<AudioBufferSnapshot>,
+        locale: Locale
+    ) -> AsyncStream<ASREvent> {
+        AsyncStream { $0.finish() }
+    }
+
+    func cancel() {}
+
+    func transcribeChunk(samples: [Float], locale: Locale) async -> ASRChunkResult {
+        _ = locale
+        let current = callIndex.withLock { state in
+            let value = state
+            state += 1
+            return value
+        }
+        if current == 0 {
+            return .success("head")
+        }
+        // preMerge feeds overlap+tail (> first-pass short chunk size)
+        if samples.count > 15 {
+            return .success("merged-tail")
+        }
+        return .success("short")
+    }
+}
+
+private struct EmptyFinalRetryStubASR: ASRService, @unchecked Sendable {
+    private let callIndex = OSAllocatedUnfairLock(initialState: 0)
+
+    func transcribe(
+        stream: AsyncStream<AudioBufferSnapshot>,
+        locale: Locale
+    ) -> AsyncStream<ASREvent> {
+        AsyncStream { $0.finish() }
+    }
+
+    func cancel() {}
+
+    func transcribeChunk(samples: [Float], locale: Locale) async -> ASRChunkResult {
+        _ = locale
+        let current = callIndex.withLock { state in
+            let value = state
+            state += 1
+            return value
+        }
+        if current == 0 {
+            return .success("head")
+        }
+        if current == 1 {
+            return .success("")
+        }
+        return .success("recovered-tail")
+    }
+}
+
+/// Records sample counts; first call → "head", later calls → empty (preMerge wipe trap).
+private final class RecordingEmptyPreMergeASR: ASRService, @unchecked Sendable {
+    private let lock = OSAllocatedUnfairLock(initialState: [Int]())
+
+    func sampleCountsSnapshot() -> [Int] {
+        lock.withLock { $0 }
+    }
+
+    func transcribe(
+        stream: AsyncStream<AudioBufferSnapshot>,
+        locale: Locale
+    ) -> AsyncStream<ASREvent> {
+        AsyncStream { $0.finish() }
+    }
+
+    func cancel() {}
+
+    func transcribeChunk(samples: [Float], locale: Locale) async -> ASRChunkResult {
+        _ = locale
+        let callIndex = lock.withLock { state -> Int in
+            state.append(samples.count)
+            return state.count - 1
+        }
+        if callIndex == 0 {
+            return .success("head")
+        }
+        return .success("")
+    }
+}