Add unit test for float decoding

PR #3369 <#3369>
Genymobile · Aug 28, 2022 · 136ab8c · 136ab8c
1 parent 3848ce8
commit 136ab8c
Showing 1 changed file with 20 additions and 0 deletions.
diff --git a/server/src/test/java/com/genymobile/scrcpy/BinaryTest.java b/server/src/test/java/com/genymobile/scrcpy/BinaryTest.java
@@ -0,0 +1,20 @@
+package com.genymobile.scrcpy;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class BinaryTest {
+
+    @Test
+    public void testU16FixedPointToFloat() {
+        final float delta = 0.0f; // on these values, there MUST be no rounding error
+        Assert.assertEquals(0.0f, Binary.u16FixedPointToFloat((short) 0), delta);
+        Assert.assertEquals(0.03125f, Binary.u16FixedPointToFloat((short) 0x800), delta);
+        Assert.assertEquals(0.0625f, Binary.u16FixedPointToFloat((short) 0x1000), delta);
+        Assert.assertEquals(0.125f, Binary.u16FixedPointToFloat((short) 0x2000), delta);
+        Assert.assertEquals(0.25f, Binary.u16FixedPointToFloat((short) 0x4000), delta);
+        Assert.assertEquals(0.5f, Binary.u16FixedPointToFloat((short) 0x8000), delta);
+        Assert.assertEquals(0.75f, Binary.u16FixedPointToFloat((short) 0xc000), delta);
+        Assert.assertEquals(1.0f, Binary.u16FixedPointToFloat((short) 0xffff), delta);
+    }
+}