// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals } from "../../../testing/asserts.ts";
import { generate, validate } from "../../v5.ts";

const NAMESPACE = "1b671a64-40d5-491e-99b0-da01ff1f3341";

Deno.test({
  name: "[UUID] test_uuid_v5",
  fn(): void {
    const u = generate({ value: "", namespace: NAMESPACE });
    assertEquals(typeof u, "string", "returns a string");
    assert(u !== "", "return string is not empty");
  },
});

Deno.test({
  name: "[UUID] test_uuid_v5_format",
  fn(): void {
    for (let i = 0; i < 10000; i++) {
      const u = generate({ value: String(i), namespace: NAMESPACE }) as string;
      assert(validate(u), `${u} is not a valid uuid v5`);
    }
  },
});

Deno.test({
  name: "[UUID] test_uuid_v5_option",
  fn(): void {
    const v5Options = {
      value: "Hello, World",
      namespace: NAMESPACE,
    };
    const u = generate(v5Options);
    assertEquals(u, "4b4f2adc-5b27-57b5-8e3a-c4c4bcf94f05");
  },
});

Deno.test({
  name: "[UUID] test_uuid_v5_buf_offset",
  fn(): void {
    const buf = [
      75,
      79,
      42,
      220,
      91,
      39,
      87,
      181,
      142,
      58,
      196,
      196,
      188,
      249,
      79,
      5,
    ];
    const origin = JSON.parse(JSON.stringify(buf));
    generate({ value: "Hello, World", namespace: NAMESPACE }, buf);
    assertEquals(origin, buf);

    generate({ value: "Hello, World", namespace: NAMESPACE }, buf, 3);
    assertEquals(origin.slice(0, 3), buf.slice(0, 3));
    assertEquals(origin, buf.slice(3));
  },
});