package com.infendro.mac

import com.infendro.hash.sha2.`SHA-256`
import kotlin.test.Test
import kotlin.test.assertContentEquals
import kotlin.test.assertEquals

class `HMAC Test` {
    val hmac = HMAC(`SHA-256`)

    @Test
    fun bytes() {
        assertEquals(32, hmac.bytes)
        assertEquals(256, hmac.bits)
    }

    @Test
    fun example() {
        val expected = byteArrayOf(
            -0x09, -0x44, -0x7d, -0x0c, +0x30, +0x53, -0x7c, +0x24,
            -0x4f, +0x32, -0x68, -0x1a, -0x56, +0x6f, -0x4f, +0x43,
            -0x11, +0x4d, +0x59, -0x5f, +0x49, +0x46, +0x17, +0x59,
            -0x69, +0x47, -0x63, -0x44, +0x2d, +0x1a, +0x3c, -0x28,
        )
        val actual = hmac.hash(
            "key".encodeToByteArray(),
            "The quick brown fox jumps over the lazy dog".encodeToByteArray(),
        )
        assertContentEquals(expected, actual)
    }
}