implement tests

also fix MD5

src/commonTest/kotlin/com/infendro/hash/keccak/sha3/SHA3-512.kt

@@ -0,0 +1,42 @@
+package com.infendro.hash.keccak.sha3
+
+import kotlin.test.Test
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+
+class `SHA3-512 Test` {
+    val function = `SHA3-512`
+
+    @Test
+    fun `bytes and block`() {
+        assertEquals(64, function.bytes)
+        assertEquals(512, function.bits)
+        assertEquals(72, function.block)
+    }
+
+    @Test
+    fun `empty bytearray`() {
+        val expected = ubyteArrayOf(
+            0xa6U, 0x9fU, 0x73U, 0xccU,
+            0xa2U, 0x3aU, 0x9aU, 0xc5U,
+            0xc8U, 0xb5U, 0x67U, 0xdcU,
+            0x18U, 0x5aU, 0x75U, 0x6eU,
+            0x97U, 0xc9U, 0x82U, 0x16U,
+            0x4fU, 0xe2U, 0x58U, 0x59U,
+            0xe0U, 0xd1U, 0xdcU, 0xc1U,
+            0x47U, 0x5cU, 0x80U, 0xa6U,
+            0x15U, 0xb2U, 0x12U, 0x3aU,
+            0xf1U, 0xf5U, 0xf9U, 0x4cU,
+            0x11U, 0xe3U, 0xe9U, 0x40U,
+            0x2cU, 0x3aU, 0xc5U, 0x58U,
+            0xf5U, 0x00U, 0x19U, 0x9dU,
+            0x95U, 0xb6U, 0xd3U, 0xe3U,
+            0x01U, 0x75U, 0x85U, 0x86U,
+            0x28U, 0x1dU, 0xcdU, 0x26U,
+        )
+        val actual = function.hash(
+            ubyteArrayOf()
+        )
+        assertContentEquals(expected, actual)
+    }
+}