Auto commit Thu Mar 19 05:01:02 PM CDT 2026

app/src/test/java/com/mindmachine/mvp/TimelineParametersTest.kt

@@ -0,0 +1,34 @@
+package com.mindmachine.mvp
+
+import com.mindmachine.mvp.session.TimelineEditorState
+import com.mindmachine.mvp.session.TimelineParameters
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class TimelineParametersTest {
+
+    @Test
+    fun `log scale normalize-denormalize roundtrip is stable`() {
+        val curves = listOf(
+            TimelineEditorState.ActiveCurve.VISUAL_RIGHT,
+            TimelineEditorState.ActiveCurve.AUDIO_LEFT,
+            TimelineEditorState.ActiveCurve.AUDIO_RIGHT,
+        )
+
+        for (c in curves) {
+            val n = 0.37f
+            val v = TimelineParameters.denormalize(c, n)
+            val n2 = TimelineParameters.normalize(c, v)
+            assertTrue("Expected normalized roundtrip close for $c but got $n2", kotlin.math.abs(n - n2) < 1e-3f)
+        }
+    }
+
+    @Test
+    fun `brightness percent helper stays in range`() {
+        assertEquals(0, TimelineParameters.brightnessPercentFromNormalized(0f))
+        assertEquals(100, TimelineParameters.brightnessPercentFromNormalized(1f))
+        val mid = TimelineParameters.brightnessPercentFromNormalized(0.5f)
+        assertTrue(mid in 1..99)
+    }
+}