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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertThrows } from "../assert/mod.ts";import { decode } from "./decode.ts";
Deno.test("decode() handles positive fixint", () => {  for (let i = 0; i <= 0x7f; i++) {    assertEquals(decode(Uint8Array.of(i)), i);  }});
Deno.test("decode() handles fixmap", () => {  const map = { "a": 2, "b": 3 };  const encodedMap = [0b1010_0001, 97, 2, 0b1010_0001, 98, 3];
  assertEquals(decode(Uint8Array.of(0b10000000 | 2, ...encodedMap)), map);});
Deno.test("decode() handles fixarray", () => {  const array = [0, 1, 2, 3, 4, 5, 6];
  assertEquals(    decode(Uint8Array.of(0b10010000 | array.length, ...array)),    array,  );});
Deno.test("decode() handles fixstr", () => {  const str = "hello world!";  const encoded = new TextEncoder().encode(str);
  assertEquals(    decode(Uint8Array.of(0xA0 | encoded.length, ...encoded)),    str,  );});
Deno.test("decode() handles nil, (never used), false, true", () => {  assertEquals(decode(Uint8Array.of(0xc0)), null); // nil  assertThrows(() => decode(Uint8Array.of(0xc1))); // (never used)  assertEquals(decode(Uint8Array.of(0xc2)), false); // false  assertEquals(decode(Uint8Array.of(0xc3)), true); // true});
Deno.test("decode() handles bin 8, bin 16, bin 32", () => {  const arr = Uint8Array.of(0, 1, 2, 3, 4, 5, 6, 7);  assertEquals(decode(Uint8Array.of(0xc4, arr.length, ...arr)), arr);  assertEquals(decode(Uint8Array.of(0xc5, 0, arr.length, ...arr)), arr);  assertEquals(    decode(Uint8Array.of(0xc6, 0, 0, 0, arr.length, ...arr)),    arr,  );});
Deno.test("decode() handles ext 8, ext 16, ext 32", () => {  assertThrows(() => decode(Uint8Array.of(0xc7)));  assertThrows(() => decode(Uint8Array.of(0xc8)));  assertThrows(() => decode(Uint8Array.of(0xc9)));});
Deno.test("decode() handles float 32, float 64", () => {  assertEquals(    decode(Uint8Array.of(0xca, 0x43, 0xd2, 0x58, 0x52)),    420.69000244140625,  );  assertEquals(    decode(      Uint8Array.of(0xcb, 0x40, 0x09, 0x21, 0xFB, 0x54, 0x44, 0x2D, 0x18),    ),    3.14159265358979311599796346854,  );});
Deno.test("decode() handles uint8, uint16, uint32, uint64", () => {  assertEquals(decode(Uint8Array.of(0xcc, 0xff)), 255);  assertEquals(decode(Uint8Array.of(0xcd, 0xff, 0xff)), 65535);  assertEquals(    decode(Uint8Array.of(0xce, 0xff, 0xff, 0xff, 0xff)),    4294967295,  );  assertEquals(    decode(      Uint8Array.of(0xcf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff),    ),    18446744073709551615n,  );});
Deno.test("decode() handles int8, int16, int32, int64", () => {  assertEquals(decode(Uint8Array.of(0xd0, 0x80)), -128);  assertEquals(decode(Uint8Array.of(0xd1, 0x80, 0x00)), -32768);  assertEquals(    decode(Uint8Array.of(0xd2, 0x80, 0x00, 0x00, 0x00)),    -2147483648,  );  assertEquals(    decode(      Uint8Array.of(0xd3, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00),    ),    -9223372036854775808n,  );});
Deno.test("decode() handles fixext 1, fixext 2, fixext 4, fixext 8, fixext 16", () => {  assertThrows(() => decode(Uint8Array.of(0xd4)));  assertThrows(() => decode(Uint8Array.of(0xd5)));  assertThrows(() => decode(Uint8Array.of(0xd6)));  assertThrows(() => decode(Uint8Array.of(0xd7)));  assertThrows(() => decode(Uint8Array.of(0xd8)));});
Deno.test("decode() handles str 8, str 16, str 32", () => {  const str = "hello world!";  const encoded = new TextEncoder().encode(str);
  assertEquals(decode(Uint8Array.of(0xd9, encoded.length, ...encoded)), str);  assertEquals(    decode(Uint8Array.of(0xda, 0, encoded.length, ...encoded)),    str,  );  assertEquals(    decode(Uint8Array.of(0xdb, 0, 0, 0, encoded.length, ...encoded)),    str,  );});
Deno.test("decode() handles array 16, array 32", () => {  const array = [0, 1, 2, 3, 4, 5, 6];
  assertEquals(    decode(Uint8Array.of(0xdc, 0, array.length, ...array)),    array,  );  assertEquals(    decode(Uint8Array.of(0xdd, 0, 0, 0, array.length, ...array)),    array,  );});
Deno.test("decode() handles map 16, map 32", () => {  const map = { "a": 2, "b": 3 };  const encodedMap = [0b1010_0001, 97, 2, 0b1010_0001, 98, 3];
  assertEquals(decode(Uint8Array.of(0xde, 0, 2, ...encodedMap)), map);  assertEquals(decode(Uint8Array.of(0xdf, 0, 0, 0, 2, ...encodedMap)), map);});
Deno.test("decode() handles negative fixint", () => {  for (let i = -32; i <= -1; i++) {    assertEquals(decode(Uint8Array.of(i)), i);  }});