Add unit test for SimpleBitmap

Author: jobe-m

korge-gradle-plugin/src/test/kotlin/korlibs/korge/gradle/texpacker/SimpleBitmapTest.kt

@@ -0,0 +1,58 @@
+package korlibs.korge.gradle.texpacker
+
+import java.awt.*
+import org.junit.Assert
+import org.junit.Test
+
+class SimpleBitmapTest {
+    @Test
+    fun testConstructionAndPixelAccess() {
+        val bmp = SimpleBitmap(2, 2)
+        bmp[0, 0] = SimpleRGBA(0x11223344)
+        bmp[1, 0] = SimpleRGBA(0x55667788)
+        bmp[0, 1] = SimpleRGBA(0x19AABBCC)
+        bmp[1, 1] = SimpleRGBA(0x1DEEFF00)
+        Assert.assertEquals(0x11223344, bmp[0, 0].data)
+        Assert.assertEquals(0x55667788, bmp[1, 0].data)
+        Assert.assertEquals(0x19AABBCC, bmp[0, 1].data)
+        Assert.assertEquals(0x1DEEFF00, bmp[1, 1].data)
+    }
+
+    @Test
+    fun testSlice() {
+        val bmp = SimpleBitmap(4, 4)
+        for (y in 0 until 4) for (x in 0 until 4) bmp[x, y] = SimpleRGBA(x + y * 4)
+        val slice = bmp.slice(Rectangle(1, 1, 2, 2))
+        Assert.assertEquals(2, slice.width)
+        Assert.assertEquals(2, slice.height)
+        Assert.assertEquals(5, slice[0, 0].data)
+        Assert.assertEquals(6, slice[1, 0].data)
+        Assert.assertEquals(9, slice[0, 1].data)
+        Assert.assertEquals(10, slice[1, 1].data)
+    }
+
+    @Test
+    fun testHashCodeConsistency() {
+        val bmp1 = SimpleBitmap(2, 2)
+        val bmp2 = SimpleBitmap(2, 2)
+        for (i in 0..3) {
+            bmp1.data[i] = i * 10
+            bmp2.data[i] = i * 10
+        }
+        Assert.assertEquals(bmp1.hashCode(), bmp2.hashCode())
+        bmp2.data[3] = 999
+        Assert.assertNotEquals(bmp1.hashCode(), bmp2.hashCode())
+    }
+
+    @Test
+    fun testGetRectAndPutRect() {
+        val bmp = SimpleBitmap(3, 3)
+        for (i in bmp.data.indices) bmp.data[i] = i
+        val rect = bmp.getRect(1, 1, 2, 2)
+        Assert.assertArrayEquals(intArrayOf(4, 5, 7, 8), rect)
+        val bmp2 = SimpleBitmap(2, 2)
+        bmp2.putRect(0, 0, 2, 2, rect)
+        Assert.assertArrayEquals(rect, bmp2.data)
+    }
+}
+