feat(fishing): FishingModeManager with target zone computation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/android-app/app/src/test/kotlin/org/terst/nav/ui/fishing/FishingModeManagerTest.kt b/android-app/app/src/test/kotlin/org/terst/nav/ui/fishing/FishingModeManagerTest.kt
new file mode 100644
index 0000000..7840b52
--- /dev/null
+++ b/android-app/app/src/test/kotlin/org/terst/nav/ui/fishing/FishingModeManagerTest.kt
@@ -0,0 +1,16 @@
+package org.terst.nav.ui.fishing
+
+import org.junit.Assert.*
+import org.junit.Test
+
+class FishingModeManagerTest {
+    @Test fun `target zone computed from current bearing and temp break`() {
+        val mgr = FishingModeManager()
+        val target = mgr.computeTarget(
+            boatLat = 19.5, boatLon = -156.0, boatCogDeg = 270.0,
+            tempC = 25.0, currentKt = 1.2, currentDirDeg = 180.0
+        )
+        assertNotNull(target)
+        assertTrue(target!!.distanceNm in 0.5..20.0)
+    }
+}