From 62cc93086498d57ef7298eddb40cc382dfc10c6d Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Wed, 20 May 2026 22:18:38 +0000
Subject: Fix Long overflow in TackDetector: var lastTackMs = Long.MIN_VALUE
 caused subtraction overflow, filtering every tack

---
 .../org/terst/nav/track/TackDetectorGpxTest.kt     | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 android-app/app/src/test/kotlin/org/terst/nav/track/TackDetectorGpxTest.kt

(limited to 'android-app/app/src/test/kotlin/org/terst')

diff --git a/android-app/app/src/test/kotlin/org/terst/nav/track/TackDetectorGpxTest.kt b/android-app/app/src/test/kotlin/org/terst/nav/track/TackDetectorGpxTest.kt
new file mode 100644
index 0000000..83ca259
--- /dev/null
+++ b/android-app/app/src/test/kotlin/org/terst/nav/track/TackDetectorGpxTest.kt
@@ -0,0 +1,25 @@
+package org.terst.nav.track
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class TackDetectorGpxTest {
+
+    @Test
+    fun `detects 6 tacks in April 22 test file`() {
+        val stream = javaClass.classLoader!!
+            .getResourceAsStream("nav_20260422_190543.gpx")
+            ?: error("GPX test file not found in test resources")
+        val points = GpxParser.parse(stream)
+        assertTrue("Expected >100 points, got ${points.size}", points.size > 100)
+
+        val tacks = TackDetector.detectTacks(points)
+        assertEquals(
+            "Expected 6 tacks in test track; got ${tacks.size}: ${
+                tacks.map { "%.0f→%.0f".format(it.cogBefore, it.cogAfter) }
+            }",
+            6, tacks.size
+        )
+    }
+}
-- 
cgit v1.2.3