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import { assertEquals, encode } from "./deps.ts";import { chacha20 } from "./mod.ts";
interface TestVector {  key: Uint8Array;  nonce: Uint8Array;  counter: number;  plaintext: Uint8Array;  ciphertext: Uint8Array;}
function loadTestVectors(): TestVector[] {  return JSON.parse(    new TextDecoder().decode(Deno.readFileSync(`./test_vectors.json`))  ).map(    (testVector: { [key: string]: any; }): TestVector => ({      key: encode(testVector.key, "hex"),      nonce: encode(testVector.nonce, "hex"),      counter: testVector.counter,      plaintext: encode(testVector.plaintext, "hex"),      ciphertext: encode(testVector.ciphertext, "hex")    })  );}
// See https://tools.ietf.org/html/rfc8439const testVectors: TestVector[] = loadTestVectors();
testVectors.forEach(  (    { key, nonce, counter, plaintext, ciphertext: expected }: TestVector,    i: number  ): void => {    Deno.test({      name: `chacha20 encryption [${i}]`,      fn(): void {        const ciphertext: Uint8Array = new Uint8Array(plaintext.byteLength);
        chacha20(ciphertext, key, nonce, counter, plaintext);
        assertEquals(ciphertext, expected);      }    });  });
testVectors.forEach(  (    { key, nonce, counter, plaintext: expected, ciphertext }: TestVector,    i: number  ): void => {    Deno.test({      name: `chacha20 decryption [${i}]`,      fn(): void {        const plaintext: Uint8Array = new Uint8Array(ciphertext.byteLength);
        chacha20(plaintext, key, nonce, counter, ciphertext);
        assertEquals(plaintext, expected);      }    });  });