improve test coverage

src/commonMain/kotlin/com/infendro/bytes/bytearray/Conversion.kt

@@ -50,6 +50,42 @@ fun ByteArray.toLong(startIndex: Int = 0, order: ByteOrder = BIG_ENDIAN): Long {
     }
 }
 
+fun ByteArray.copyInto(
+    destination: IntArray,
+    destinationOffset: Int = 0,
+    startIndex: Int = 0,
+    endIndex: Int = size,
+    order: ByteOrder = BIG_ENDIAN,
+) {
+    val length = endIndex - startIndex
+    require(length >= 0 && length % 4 == 0)
+    require(startIndex in 0..(size - length))
+    require(destinationOffset in 0..(destination.size - (length / 4)))
+
+    when (order) {
+        BIG_ENDIAN -> {
+            repeat(length / 4) { i ->
+                val offset = startIndex + (i * 4)
+                destination[destinationOffset + i] =
+                    ((this[offset].toInt() and 0xFF) shl 24) or
+                            ((this[offset + 1].toInt() and 0xFF) shl 16) or
+                            ((this[offset + 2].toInt() and 0xFF) shl 8) or
+                            (this[offset + 3].toInt() and 0xFF)
+            }
+        }
+        LITTLE_ENDIAN -> {
+            repeat(length / 4) { i ->
+                val offset = startIndex + (i * 4)
+                destination[destinationOffset + i] =
+                    (this[offset].toInt() and 0xFF) or
+                            ((this[offset + 1].toInt() and 0xFF) shl 8) or
+                            ((this[offset + 2].toInt() and 0xFF) shl 16) or
+                            ((this[offset + 3].toInt() and 0xFF) shl 24)
+            }
+        }
+    }
+}
+
 fun ByteArray.toIntArray(startIndex: Int = 0, endIndex: Int = size, order: ByteOrder = BIG_ENDIAN): IntArray {
     val length = endIndex - startIndex
     val result = IntArray(length / 4)
@@ -57,6 +93,50 @@ fun ByteArray.toIntArray(startIndex: Int = 0, endIndex: Int = size, order: ByteO
     return result
 }
 
+fun ByteArray.copyInto(
+    destination: LongArray,
+    destinationOffset: Int = 0,
+    startIndex: Int = 0,
+    endIndex: Int = size,
+    order: ByteOrder = BIG_ENDIAN,
+) {
+    val length = endIndex - startIndex
+    require(length >= 0 && length % 8 == 0)
+    require(startIndex in 0..(size - length))
+    require(destinationOffset in 0..(destination.size - (length / 8)))
+
+    when (order) {
+        BIG_ENDIAN -> {
+            repeat(length / 8) { i ->
+                val offset = startIndex + (i * 8)
+                destination[destinationOffset + i] =
+                    ((this[offset].toLong() and 0xFFL) shl 56) or
+                            ((this[offset + 1].toLong() and 0xFFL) shl 48) or
+                            ((this[offset + 2].toLong() and 0xFFL) shl 40) or
+                            ((this[offset + 3].toLong() and 0xFFL) shl 32) or
+                            ((this[offset + 4].toLong() and 0xFFL) shl 24) or
+                            ((this[offset + 5].toLong() and 0xFFL) shl 16) or
+                            ((this[offset + 6].toLong() and 0xFFL) shl 8) or
+                            (this[offset + 7].toLong() and 0xFFL)
+            }
+        }
+        LITTLE_ENDIAN -> {
+            repeat(length / 8) { i ->
+                val offset = startIndex + (i * 8)
+                destination[destinationOffset + i] =
+                    (this[offset].toLong() and 0xFFL) or
+                            ((this[offset + 1].toLong() and 0xFFL) shl 8) or
+                            ((this[offset + 2].toLong() and 0xFFL) shl 16) or
+                            ((this[offset + 3].toLong() and 0xFFL) shl 24) or
+                            ((this[offset + 4].toLong() and 0xFFL) shl 32) or
+                            ((this[offset + 5].toLong() and 0xFFL) shl 40) or
+                            ((this[offset + 6].toLong() and 0xFFL) shl 48) or
+                            ((this[offset + 7].toLong() and 0xFFL) shl 56)
+            }
+        }
+    }
+}
+
 fun ByteArray.toLongArray(startIndex: Int = 0, endIndex: Int = size, order: ByteOrder = BIG_ENDIAN): LongArray {
     val length = endIndex - startIndex
     val result = LongArray(length / 8)

src/commonMain/kotlin/com/infendro/bytes/bytearray/Copy.kt

@@ -1,85 +0,0 @@
-package com.infendro.bytes.bytearray
-
-import com.infendro.bytes.ByteOrder
-import com.infendro.bytes.ByteOrder.BIG_ENDIAN
-import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-
-fun ByteArray.copyInto(
-    destination: IntArray,
-    destinationOffset: Int = 0,
-    startIndex: Int = 0,
-    endIndex: Int = size,
-    order: ByteOrder = BIG_ENDIAN,
-) {
-    val length = endIndex - startIndex
-    require(length >= 0 && length % 4 == 0)
-    require(startIndex in 0..(size - length))
-    require(destinationOffset in 0..(destination.size - (length / 4)))
-
-    when (order) {
-        BIG_ENDIAN -> {
-            repeat(length / 4) { i ->
-                val offset = startIndex + (i * 4)
-                destination[destinationOffset + i] =
-                    ((this[offset].toInt() and 0xFF) shl 24) or
-                            ((this[offset + 1].toInt() and 0xFF) shl 16) or
-                            ((this[offset + 2].toInt() and 0xFF) shl 8) or
-                            (this[offset + 3].toInt() and 0xFF)
-            }
-        }
-        LITTLE_ENDIAN -> {
-            repeat(length / 4) { i ->
-                val offset = startIndex + (i * 4)
-                destination[destinationOffset + i] =
-                    (this[offset].toInt() and 0xFF) or
-                            ((this[offset + 1].toInt() and 0xFF) shl 8) or
-                            ((this[offset + 2].toInt() and 0xFF) shl 16) or
-                            ((this[offset + 3].toInt() and 0xFF) shl 24)
-            }
-        }
-    }
-}
-
-fun ByteArray.copyInto(
-    destination: LongArray,
-    destinationOffset: Int = 0,
-    startIndex: Int = 0,
-    endIndex: Int = size,
-    order: ByteOrder = BIG_ENDIAN,
-) {
-    val length = endIndex - startIndex
-    require(length >= 0 && length % 8 == 0)
-    require(startIndex in 0..(size - length))
-    require(destinationOffset in 0..(destination.size - (length / 8)))
-
-    when (order) {
-        BIG_ENDIAN -> {
-            repeat(length / 8) { i ->
-                val offset = startIndex + (i * 8)
-                destination[destinationOffset + i] =
-                    ((this[offset].toLong() and 0xFFL) shl 56) or
-                            ((this[offset + 1].toLong() and 0xFFL) shl 48) or
-                            ((this[offset + 2].toLong() and 0xFFL) shl 40) or
-                            ((this[offset + 3].toLong() and 0xFFL) shl 32) or
-                            ((this[offset + 4].toLong() and 0xFFL) shl 24) or
-                            ((this[offset + 5].toLong() and 0xFFL) shl 16) or
-                            ((this[offset + 6].toLong() and 0xFFL) shl 8) or
-                            (this[offset + 7].toLong() and 0xFFL)
-            }
-        }
-        LITTLE_ENDIAN -> {
-            repeat(length / 8) { i ->
-                val offset = startIndex + (i * 8)
-                destination[destinationOffset + i] =
-                    (this[offset].toLong() and 0xFFL) or
-                            ((this[offset + 1].toLong() and 0xFFL) shl 8) or
-                            ((this[offset + 2].toLong() and 0xFFL) shl 16) or
-                            ((this[offset + 3].toLong() and 0xFFL) shl 24) or
-                            ((this[offset + 4].toLong() and 0xFFL) shl 32) or
-                            ((this[offset + 5].toLong() and 0xFFL) shl 40) or
-                            ((this[offset + 6].toLong() and 0xFFL) shl 48) or
-                            ((this[offset + 7].toLong() and 0xFFL) shl 56)
-            }
-        }
-    }
-}

src/commonMain/kotlin/com/infendro/bytes/int/Conversion.kt

@@ -2,6 +2,26 @@ package com.infendro.bytes.int
 
 import com.infendro.bytes.ByteOrder
 import com.infendro.bytes.ByteOrder.BIG_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
+
+fun Int.copyInto(destination: ByteArray, destinationOffset: Int = 0, order: ByteOrder = BIG_ENDIAN) {
+    require(destinationOffset in 0..(destination.size - 4))
+
+    when (order) {
+        BIG_ENDIAN -> {
+            destination[destinationOffset] = (this shr 24).toByte()
+            destination[destinationOffset + 1] = (this shr 16).toByte()
+            destination[destinationOffset + 2] = (this shr 8).toByte()
+            destination[destinationOffset + 3] = this.toByte()
+        }
+        LITTLE_ENDIAN -> {
+            destination[destinationOffset] = this.toByte()
+            destination[destinationOffset + 1] = (this shr 8).toByte()
+            destination[destinationOffset + 2] = (this shr 16).toByte()
+            destination[destinationOffset + 3] = (this shr 24).toByte()
+        }
+    }
+}
 
 fun Int.toByteArray(order: ByteOrder = BIG_ENDIAN): ByteArray {
     val result = ByteArray(4)

src/commonMain/kotlin/com/infendro/bytes/int/Copy.kt

@@ -1,24 +0,0 @@
-package com.infendro.bytes.int
-
-import com.infendro.bytes.ByteOrder
-import com.infendro.bytes.ByteOrder.BIG_ENDIAN
-import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-
-fun Int.copyInto(destination: ByteArray, destinationOffset: Int = 0, order: ByteOrder = BIG_ENDIAN) {
-    require(destinationOffset in 0..(destination.size - 4))
-
-    when (order) {
-        BIG_ENDIAN -> {
-            destination[destinationOffset] = (this shr 24).toByte()
-            destination[destinationOffset + 1] = (this shr 16).toByte()
-            destination[destinationOffset + 2] = (this shr 8).toByte()
-            destination[destinationOffset + 3] = this.toByte()
-        }
-        LITTLE_ENDIAN -> {
-            destination[destinationOffset] = this.toByte()
-            destination[destinationOffset + 1] = (this shr 8).toByte()
-            destination[destinationOffset + 2] = (this shr 16).toByte()
-            destination[destinationOffset + 3] = (this shr 24).toByte()
-        }
-    }
-}

src/commonMain/kotlin/com/infendro/bytes/intarray/Conversion.kt

@@ -2,6 +2,43 @@ package com.infendro.bytes.intarray
 
 import com.infendro.bytes.ByteOrder
 import com.infendro.bytes.ByteOrder.BIG_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
+
+fun IntArray.copyInto(
+    destination: ByteArray,
+    destinationOffset: Int = 0,
+    startIndex: Int = 0,
+    endIndex: Int = size,
+    order: ByteOrder = BIG_ENDIAN,
+) {
+    val length = endIndex - startIndex
+    require(length >= 0)
+    require(startIndex in 0..(size - length))
+    require(destinationOffset in 0..(destination.size - (length * 4)))
+
+    when (order) {
+        BIG_ENDIAN -> {
+            repeat(length) { i ->
+                val offset = destinationOffset + (i * 4)
+                val value = this[startIndex + i]
+                destination[offset] = (value shr 24).toByte()
+                destination[offset + 1] = (value shr 16).toByte()
+                destination[offset + 2] = (value shr 8).toByte()
+                destination[offset + 3] = value.toByte()
+            }
+        }
+        LITTLE_ENDIAN -> {
+            repeat(length) { i ->
+                val offset = destinationOffset + (i * 4)
+                val value = this[startIndex + i]
+                destination[offset] = value.toByte()
+                destination[offset + 1] = (value shr 8).toByte()
+                destination[offset + 2] = (value shr 16).toByte()
+                destination[offset + 3] = (value shr 24).toByte()
+            }
+        }
+    }
+}
 
 fun IntArray.toByteArray(startIndex: Int = 0, endIndex: Int = size, order: ByteOrder = BIG_ENDIAN): ByteArray {
     val length = endIndex - startIndex

src/commonMain/kotlin/com/infendro/bytes/intarray/Copy.kt

@@ -1,41 +0,0 @@
-package com.infendro.bytes.intarray
-
-import com.infendro.bytes.ByteOrder
-import com.infendro.bytes.ByteOrder.BIG_ENDIAN
-import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-
-fun IntArray.copyInto(
-    destination: ByteArray,
-    destinationOffset: Int = 0,
-    startIndex: Int = 0,
-    endIndex: Int = size,
-    order: ByteOrder = BIG_ENDIAN,
-) {
-    val length = endIndex - startIndex
-    require(length >= 0)
-    require(startIndex in 0..(size - length))
-    require(destinationOffset in 0..(destination.size - (length * 4)))
-
-    when (order) {
-        BIG_ENDIAN -> {
-            repeat(length) { i ->
-                val offset = destinationOffset + (i * 4)
-                val value = this[startIndex + i]
-                destination[offset] = (value shr 24).toByte()
-                destination[offset + 1] = (value shr 16).toByte()
-                destination[offset + 2] = (value shr 8).toByte()
-                destination[offset + 3] = value.toByte()
-            }
-        }
-        LITTLE_ENDIAN -> {
-            repeat(length) { i ->
-                val offset = destinationOffset + (i * 4)
-                val value = this[startIndex + i]
-                destination[offset] = value.toByte()
-                destination[offset + 1] = (value shr 8).toByte()
-                destination[offset + 2] = (value shr 16).toByte()
-                destination[offset + 3] = (value shr 24).toByte()
-            }
-        }
-    }
-}

src/commonMain/kotlin/com/infendro/bytes/long/Conversion.kt

@@ -2,6 +2,34 @@ package com.infendro.bytes.long
 
 import com.infendro.bytes.ByteOrder
 import com.infendro.bytes.ByteOrder.BIG_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
+
+fun Long.copyInto(destination: ByteArray, destinationOffset: Int = 0, order: ByteOrder = BIG_ENDIAN) {
+    require(destinationOffset in 0..(destination.size - 8))
+
+    when (order) {
+        BIG_ENDIAN -> {
+            destination[destinationOffset] = (this shr 56).toByte()
+            destination[destinationOffset + 1] = (this shr 48).toByte()
+            destination[destinationOffset + 2] = (this shr 40).toByte()
+            destination[destinationOffset + 3] = (this shr 32).toByte()
+            destination[destinationOffset + 4] = (this shr 24).toByte()
+            destination[destinationOffset + 5] = (this shr 16).toByte()
+            destination[destinationOffset + 6] = (this shr 8).toByte()
+            destination[destinationOffset + 7] = this.toByte()
+        }
+        LITTLE_ENDIAN -> {
+            destination[destinationOffset] = this.toByte()
+            destination[destinationOffset + 1] = (this shr 8).toByte()
+            destination[destinationOffset + 2] = (this shr 16).toByte()
+            destination[destinationOffset + 3] = (this shr 24).toByte()
+            destination[destinationOffset + 4] = (this shr 32).toByte()
+            destination[destinationOffset + 5] = (this shr 40).toByte()
+            destination[destinationOffset + 6] = (this shr 48).toByte()
+            destination[destinationOffset + 7] = (this shr 56).toByte()
+        }
+    }
+}
 
 fun Long.toByteArray(order: ByteOrder = BIG_ENDIAN): ByteArray {
     val result = ByteArray(8)

src/commonMain/kotlin/com/infendro/bytes/long/Copy.kt

@@ -1,32 +0,0 @@
-package com.infendro.bytes.long
-
-import com.infendro.bytes.ByteOrder
-import com.infendro.bytes.ByteOrder.BIG_ENDIAN
-import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-
-fun Long.copyInto(destination: ByteArray, destinationOffset: Int = 0, order: ByteOrder = BIG_ENDIAN) {
-    require(destinationOffset in 0..(destination.size - 8))
-
-    when (order) {
-        BIG_ENDIAN -> {
-            destination[destinationOffset] = (this shr 56).toByte()
-            destination[destinationOffset + 1] = (this shr 48).toByte()
-            destination[destinationOffset + 2] = (this shr 40).toByte()
-            destination[destinationOffset + 3] = (this shr 32).toByte()
-            destination[destinationOffset + 4] = (this shr 24).toByte()
-            destination[destinationOffset + 5] = (this shr 16).toByte()
-            destination[destinationOffset + 6] = (this shr 8).toByte()
-            destination[destinationOffset + 7] = this.toByte()
-        }
-        LITTLE_ENDIAN -> {
-            destination[destinationOffset] = this.toByte()
-            destination[destinationOffset + 1] = (this shr 8).toByte()
-            destination[destinationOffset + 2] = (this shr 16).toByte()
-            destination[destinationOffset + 3] = (this shr 24).toByte()
-            destination[destinationOffset + 4] = (this shr 32).toByte()
-            destination[destinationOffset + 5] = (this shr 40).toByte()
-            destination[destinationOffset + 6] = (this shr 48).toByte()
-            destination[destinationOffset + 7] = (this shr 56).toByte()
-        }
-    }
-}

src/commonMain/kotlin/com/infendro/bytes/longarray/Conversion.kt

@@ -2,6 +2,51 @@ package com.infendro.bytes.longarray
 
 import com.infendro.bytes.ByteOrder
 import com.infendro.bytes.ByteOrder.BIG_ENDIAN
+import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
+
+fun LongArray.copyInto(
+    destination: ByteArray,
+    destinationOffset: Int = 0,
+    startIndex: Int = 0,
+    endIndex: Int = size,
+    order: ByteOrder = BIG_ENDIAN,
+) {
+    val length = endIndex - startIndex
+    require(length >= 0)
+    require(startIndex in 0..(size - length))
+    require(destinationOffset in 0..(destination.size - (length * 8)))
+
+    when (order) {
+        BIG_ENDIAN -> {
+            repeat(length) { i ->
+                val offset = destinationOffset + (i * 8)
+                val value = this[startIndex + i]
+                destination[offset] = (value shr 56).toByte()
+                destination[offset + 1] = (value shr 48).toByte()
+                destination[offset + 2] = (value shr 40).toByte()
+                destination[offset + 3] = (value shr 32).toByte()
+                destination[offset + 4] = (value shr 24).toByte()
+                destination[offset + 5] = (value shr 16).toByte()
+                destination[offset + 6] = (value shr 8).toByte()
+                destination[offset + 7] = value.toByte()
+            }
+        }
+        LITTLE_ENDIAN -> {
+            repeat(length) { i ->
+                val offset = destinationOffset + (i * 8)
+                val value = this[startIndex + i]
+                destination[offset] = value.toByte()
+                destination[offset + 1] = (value shr 8).toByte()
+                destination[offset + 2] = (value shr 16).toByte()
+                destination[offset + 3] = (value shr 24).toByte()
+                destination[offset + 4] = (value shr 32).toByte()
+                destination[offset + 5] = (value shr 40).toByte()
+                destination[offset + 6] = (value shr 48).toByte()
+                destination[offset + 7] = (value shr 56).toByte()
+            }
+        }
+    }
+}
 
 fun LongArray.toByteArray(startIndex: Int = 0, endIndex: Int = size, order: ByteOrder = BIG_ENDIAN): ByteArray {
     val length = endIndex - startIndex

src/commonMain/kotlin/com/infendro/bytes/longarray/Copy.kt

@@ -1,49 +0,0 @@
-package com.infendro.bytes.longarray
-
-import com.infendro.bytes.ByteOrder
-import com.infendro.bytes.ByteOrder.BIG_ENDIAN
-import com.infendro.bytes.ByteOrder.LITTLE_ENDIAN
-
-fun LongArray.copyInto(
-    destination: ByteArray,
-    destinationOffset: Int = 0,
-    startIndex: Int = 0,
-    endIndex: Int = size,
-    order: ByteOrder = BIG_ENDIAN,
-) {
-    val length = endIndex - startIndex
-    require(length >= 0)
-    require(startIndex in 0..(size - length))
-    require(destinationOffset in 0..(destination.size - (length * 8)))
-
-    when (order) {
-        BIG_ENDIAN -> {
-            repeat(length) { i ->
-                val offset = destinationOffset + (i * 8)
-                val value = this[startIndex + i]
-                destination[offset] = (value shr 56).toByte()
-                destination[offset + 1] = (value shr 48).toByte()
-                destination[offset + 2] = (value shr 40).toByte()
-                destination[offset + 3] = (value shr 32).toByte()
-                destination[offset + 4] = (value shr 24).toByte()
-                destination[offset + 5] = (value shr 16).toByte()
-                destination[offset + 6] = (value shr 8).toByte()
-                destination[offset + 7] = value.toByte()
-            }
-        }
-        LITTLE_ENDIAN -> {
-            repeat(length) { i ->
-                val offset = destinationOffset + (i * 8)
-                val value = this[startIndex + i]
-                destination[offset] = value.toByte()
-                destination[offset + 1] = (value shr 8).toByte()
-                destination[offset + 2] = (value shr 16).toByte()
-                destination[offset + 3] = (value shr 24).toByte()
-                destination[offset + 4] = (value shr 32).toByte()
-                destination[offset + 5] = (value shr 40).toByte()
-                destination[offset + 6] = (value shr 48).toByte()
-                destination[offset + 7] = (value shr 56).toByte()
-            }
-        }
-    }
-}

src/commonTest/kotlin/com/infendro/bytes/byte/Operator.kt

@@ -0,0 +1,13 @@
+package com.infendro.bytes.byte
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class ByteOperatorTest {
+    @Test
+    fun not() {
+        val expected = (-0x01).toByte()
+        val actual = !0x00.toByte()
+        assertEquals(expected, actual)
+    }
+}

src/commonTest/kotlin/com/infendro/bytes/bytearray/Conversion.kt

@@ -32,6 +32,19 @@ class ByteArrayConversionTest {
         }
     }
 
+    @Test
+    fun copyIntoIntArray() {
+        val expected = intArrayOf(0, 0x01234567, 0x01234567)
+        val actual = IntArray(3).also { array ->
+            val bytes = byteArrayOf(
+                0x01, 0x23, 0x45, 0x67,
+                0x01, 0x23, 0x45, 0x67,
+            )
+            bytes.copyInto(array, 1)
+        }
+        assertContentEquals(expected, actual)
+    }
+
     @Test
     fun toIntArray() {
         val expected = intArrayOf(0x01234567, 0x67452301)
@@ -51,6 +64,19 @@ class ByteArrayConversionTest {
         }
     }
 
+    @Test
+    fun copyIntoLongArray() {
+        val expected = longArrayOf(0, 0x0123456789abcdefL, 0x0123456789abcdefL)
+        val actual = LongArray(3).also { array ->
+            val bytes = byteArrayOf(
+                0x01, 0x23, 0x45, 0x67, -0x77, -0x55, -0x33, -0x11,
+                0x01, 0x23, 0x45, 0x67, -0x77, -0x55, -0x33, -0x11,
+            )
+            bytes.copyInto(array, 1)
+        }
+        assertContentEquals(expected, actual)
+    }
+
     @Test
     fun toLongArray() {
         val expected = longArrayOf(0x0123456789abcdefL, -0x1032547698badcffL)

src/commonTest/kotlin/com/infendro/bytes/bytearray/Operator.kt

@@ -11,6 +11,13 @@ class ByteArrayOperatorTest {
         assertContentEquals(expected, actual)
     }
 
+    @Test
+    fun andByte() {
+        val expected = byteArrayOf(0x0C, 0x00)
+        val actual = byteArrayOf(0x5C, 0x70) and 0x0F
+        assertContentEquals(expected, actual)
+    }
+
     @Test
     fun or() {
         val expected = byteArrayOf(0x7E, 0x7F)
@@ -18,6 +25,13 @@ class ByteArrayOperatorTest {
         assertContentEquals(expected, actual)
     }
 
+    @Test
+    fun orByte() {
+        val expected = byteArrayOf(0x5F, 0x7F)
+        val actual = byteArrayOf(0x5C, 0x70) or 0x0F
+        assertContentEquals(expected, actual)
+    }
+
     @Test
     fun xor() {
         val expected = byteArrayOf(0x66, 0x7F)
@@ -25,6 +39,13 @@ class ByteArrayOperatorTest {
         assertContentEquals(expected, actual)
     }
 
+    @Test
+    fun xorByte() {
+        val expected = byteArrayOf(0x53, 0x7F)
+        val actual = byteArrayOf(0x5C, 0x70) xor 0x0F
+        assertContentEquals(expected, actual)
+    }
+
     @Test
     fun not() {
         val expected = byteArrayOf(-0x01, -0x20)

src/commonTest/kotlin/com/infendro/bytes/int/Operator.kt

@@ -0,0 +1,13 @@
+package com.infendro.bytes.int
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class IntOperatorTest {
+    @Test
+    fun not() {
+        val expected = -0x00000001
+        val actual = !0x00000000
+        assertEquals(expected, actual)
+    }
+}

src/commonTest/kotlin/com/infendro/bytes/long/Operator.kt

@@ -0,0 +1,13 @@
+package com.infendro.bytes.long
+
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class LongOperatorTest {
+    @Test
+    fun not() {
+        val expected = -0x0000000000000001L
+        val actual = !0x0000000000000000L
+        assertEquals(expected, actual)
+    }
+}