feat: implement Haptika PPG and Watch V1

2026-07-31 16:19:42 +02:00
parent 6b7d4e0728
commit b9930b7378
249 changed files with 46475 additions and 122 deletions
@@ -0,0 +1,52 @@
+import XCTest
+@testable import HaptikaSignal
+
+final class PPGCoherencePolicyTests: XCTestCase {
+  func testSessionDurationLimitsRemainPurposeSpecific() {
+    XCTAssertEqual(PPGCoherencePolicy.maximumDurationSeconds(isCoherence: false), 120)
+    XCTAssertEqual(PPGCoherencePolicy.maximumDurationSeconds(isCoherence: true), 300)
+    XCTAssertEqual(PPGCoherencePolicy.coherenceBufferDurationSeconds, 75)
+  }
+
+  func testLiveTrackerPublishesEveryNewBeatOnlyOnce() {
+    var tracker = PPGLiveBeatTracker()
+    let first = tracker.ingest([
+      interval(end: 1, duration: 800), interval(end: 1.8, duration: 800),
+    ])
+    XCTAssertEqual(first.map(\.sequence), [1, 2])
+    let overlapping = tracker.ingest([
+      interval(end: 1.82, duration: 800), interval(end: 2.6, duration: 780),
+    ])
+    XCTAssertEqual(overlapping.map(\.sequence), [3])
+    XCTAssertEqual(overlapping.first?.timestampSeconds, 2.6)
+  }
+
+  func testTrackerDoesNotMoveBackwardAndResetsCleanly() {
+    var tracker = PPGLiveBeatTracker()
+    _ = tracker.ingest([interval(end: 10, duration: 700)])
+    XCTAssertTrue(tracker.ingest([interval(end: 9.9, duration: 700)]).isEmpty)
+    tracker.reset()
+    XCTAssertEqual(tracker.ingest([interval(end: 1, duration: 700)]).first?.sequence, 1)
+  }
+
+  func testTrackerRejectsInvalidAndRejectedIntervals() {
+    var tracker = PPGLiveBeatTracker()
+    let rejected = PulseInterval(
+      sourceIndex: 0, startSeconds: 0, endSeconds: 1,
+      durationMilliseconds: 800, rejectionReason: .localOutlier, qualityScore: 1
+    )
+    XCTAssertTrue(tracker.ingest([
+      rejected, interval(end: .nan, duration: 800), interval(end: 2, duration: 2_500),
+    ]).isEmpty)
+  }
+
+  private func interval(end: Double, duration: Double) -> PulseInterval {
+    PulseInterval(
+      sourceIndex: 0,
+      startSeconds: end - duration / 1_000,
+      endSeconds: end,
+      durationMilliseconds: duration,
+      qualityScore: 0.9
+    )
+  }
+}