implement tests

also fix MD5

src/commonTest/kotlin/com/infendro/hash/sha2/SHA-384.kt

@@ -0,0 +1,38 @@
+package com.infendro.hash.sha2
+
+import kotlin.test.Test
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+
+class `SHA-384 Test` {
+    val function = `SHA-384`
+
+    @Test
+    fun `bytes and block`() {
+        assertEquals(48, function.bytes)
+        assertEquals(384, function.bits)
+        assertEquals(128, function.block)
+    }
+
+    @Test
+    fun `empty bytearray`() {
+        val expected = ubyteArrayOf(
+            0x38U, 0xb0U, 0x60U, 0xa7U,
+            0x51U, 0xacU, 0x96U, 0x38U,
+            0x4cU, 0xd9U, 0x32U, 0x7eU,
+            0xb1U, 0xb1U, 0xe3U, 0x6aU,
+            0x21U, 0xfdU, 0xb7U, 0x11U,
+            0x14U, 0xbeU, 0x07U, 0x43U,
+            0x4cU, 0x0cU, 0xc7U, 0xbfU,
+            0x63U, 0xf6U, 0xe1U, 0xdaU,
+            0x27U, 0x4eU, 0xdeU, 0xbfU,
+            0xe7U, 0x6fU, 0x65U, 0xfbU,
+            0xd5U, 0x1aU, 0xd2U, 0xf1U,
+            0x48U, 0x98U, 0xb9U, 0x5bU,
+        )
+        val actual = function.hash(
+            ubyteArrayOf()
+        )
+        assertContentEquals(expected, actual)
+    }
+}