deno/cli/js/tests/url_search_params_test.ts

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { unitTest, assert, assertEquals } from "./test_util.ts";

unitTest(function urlSearchParamsInitString(): void {
  const init = "c=4&a=2&b=3&%C3%A1=1";
  const searchParams = new URLSearchParams(init);
  assert(
    init === searchParams.toString(),
    "The init query string does not match"
  );
});

unitTest(function urlSearchParamsInitIterable(): void {
  const init = [
    ["a", "54"],
    ["b", "true"],
  ];
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.toString(), "a=54&b=true");
});

unitTest(function urlSearchParamsInitRecord(): void {
  const init = { a: "54", b: "true" };
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.toString(), "a=54&b=true");
});

unitTest(function urlSearchParamsInit(): void {
  const params1 = new URLSearchParams("a=b");
  assertEquals(params1.toString(), "a=b");
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  const params2 = new URLSearchParams(params1 as any);
  assertEquals(params2.toString(), "a=b");
});

unitTest(function urlSearchParamsAppendSuccess(): void {
  const searchParams = new URLSearchParams();
  searchParams.append("a", "true");
  assertEquals(searchParams.toString(), "a=true");
});

unitTest(function urlSearchParamsDeleteSuccess(): void {
  const init = "a=54&b=true";
  const searchParams = new URLSearchParams(init);
  searchParams.delete("b");
  assertEquals(searchParams.toString(), "a=54");
});

unitTest(function urlSearchParamsGetAllSuccess(): void {
  const init = "a=54&b=true&a=true";
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.getAll("a"), ["54", "true"]);
  assertEquals(searchParams.getAll("b"), ["true"]);
  assertEquals(searchParams.getAll("c"), []);
});

unitTest(function urlSearchParamsGetSuccess(): void {
  const init = "a=54&b=true&a=true";
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.get("a"), "54");
  assertEquals(searchParams.get("b"), "true");
  assertEquals(searchParams.get("c"), null);
});

unitTest(function urlSearchParamsHasSuccess(): void {
  const init = "a=54&b=true&a=true";
  const searchParams = new URLSearchParams(init);
  assert(searchParams.has("a"));
  assert(searchParams.has("b"));
  assert(!searchParams.has("c"));
});

unitTest(function urlSearchParamsSetReplaceFirstAndRemoveOthers(): void {
  const init = "a=54&b=true&a=true";
  const searchParams = new URLSearchParams(init);
  searchParams.set("a", "false");
  assertEquals(searchParams.toString(), "a=false&b=true");
});

unitTest(function urlSearchParamsSetAppendNew(): void {
  const init = "a=54&b=true&a=true";
  const searchParams = new URLSearchParams(init);
  searchParams.set("c", "foo");
  assertEquals(searchParams.toString(), "a=54&b=true&a=true&c=foo");
});

unitTest(function urlSearchParamsSortSuccess(): void {
  const init = "c=4&a=2&b=3&a=1";
  const searchParams = new URLSearchParams(init);
  searchParams.sort();
  assertEquals(searchParams.toString(), "a=2&a=1&b=3&c=4");
});

unitTest(function urlSearchParamsForEachSuccess(): void {
  const init = [
    ["a", "54"],
    ["b", "true"],
  ];
  const searchParams = new URLSearchParams(init);
  let callNum = 0;
  searchParams.forEach((value, key, parent): void => {
    assertEquals(searchParams, parent);
    assertEquals(value, init[callNum][1]);
    assertEquals(key, init[callNum][0]);
    callNum++;
  });
  assertEquals(callNum, init.length);
});

unitTest(function urlSearchParamsMissingName(): void {
  const init = "=4";
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.get(""), "4");
  assertEquals(searchParams.toString(), "=4");
});

unitTest(function urlSearchParamsMissingValue(): void {
  const init = "4=";
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.get("4"), "");
  assertEquals(searchParams.toString(), "4=");
});

unitTest(function urlSearchParamsMissingEqualSign(): void {
  const init = "4";
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.get("4"), "");
  assertEquals(searchParams.toString(), "4=");
});

unitTest(function urlSearchParamsMissingPair(): void {
  const init = "c=4&&a=54&";
  const searchParams = new URLSearchParams(init);
  assertEquals(searchParams.toString(), "c=4&a=54");
});

// If pair does not contain exactly two items, then throw a TypeError.
// ref https://url.spec.whatwg.org/#interface-urlsearchparams
unitTest(function urlSearchParamsShouldThrowTypeError(): void {
  let hasThrown = 0;

  try {
    new URLSearchParams([["1"]]);
    hasThrown = 1;
  } catch (err) {
    if (err instanceof TypeError) {
      hasThrown = 2;
    } else {
      hasThrown = 3;
    }
  }

  assertEquals(hasThrown, 2);

  try {
    new URLSearchParams([["1", "2", "3"]]);
    hasThrown = 1;
  } catch (err) {
    if (err instanceof TypeError) {
      hasThrown = 2;
    } else {
      hasThrown = 3;
    }
  }

  assertEquals(hasThrown, 2);
});

unitTest(function urlSearchParamsAppendArgumentsCheck(): void {
  const methodRequireOneParam = ["delete", "getAll", "get", "has", "forEach"];

  const methodRequireTwoParams = ["append", "set"];

  methodRequireOneParam
    .concat(methodRequireTwoParams)
    .forEach((method: string): void => {
      const searchParams = new URLSearchParams();
      let hasThrown = 0;
      try {
        // @ts-ignore
        searchParams[method]();
        hasThrown = 1;
      } catch (err) {
        if (err instanceof TypeError) {
          hasThrown = 2;
        } else {
          hasThrown = 3;
        }
      }
      assertEquals(hasThrown, 2);
    });

  methodRequireTwoParams.forEach((method: string): void => {
    const searchParams = new URLSearchParams();
    let hasThrown = 0;
    try {
      // @ts-ignore
      searchParams[method]("foo");
      hasThrown = 1;
    } catch (err) {
      if (err instanceof TypeError) {
        hasThrown = 2;
      } else {
        hasThrown = 3;
      }
    }
    assertEquals(hasThrown, 2);
  });
});

// ref: https://github.com/web-platform-tests/wpt/blob/master/url/urlsearchparams-delete.any.js
unitTest(function urlSearchParamsDeletingAppendedMultiple(): void {
  const params = new URLSearchParams();
  params.append("first", (1 as unknown) as string);
  assert(params.has("first"));
  assertEquals(params.get("first"), "1");
  params.delete("first");
  assertEquals(params.has("first"), false);
  params.append("first", (1 as unknown) as string);
  params.append("first", (10 as unknown) as string);
  params.delete("first");
  assertEquals(params.has("first"), false);
});

// ref: https://github.com/web-platform-tests/wpt/blob/master/url/urlsearchparams-constructor.any.js#L176-L182
unitTest(function urlSearchParamsCustomSymbolIterator(): void {
  const params = new URLSearchParams();
  params[Symbol.iterator] = function* (): IterableIterator<[string, string]> {
    yield ["a", "b"];
  };
  const params1 = new URLSearchParams((params as unknown) as string[][]);
  assertEquals(params1.get("a"), "b");
});

unitTest(
  function urlSearchParamsCustomSymbolIteratorWithNonStringParams(): void {
    const params = {};
    // @ts-ignore
    params[Symbol.iterator] = function* (): IterableIterator<[number, number]> {
      yield [1, 2];
    };
    const params1 = new URLSearchParams((params as unknown) as string[][]);
    assertEquals(params1.get("1"), "2");
  }
);