serenity/Libraries/LibJS/Tests/builtins/BigInt/BigInt.js

load("test-common.js");

try {
  assert(BigInt.length === 1);
  assert(BigInt.name === "BigInt");

  assert(BigInt(0) === 0n);
  assert(BigInt(1) === 1n);
  assert(BigInt(+1) === 1n);
  assert(BigInt(-1) === -1n);
  assert(BigInt("") === 0n);
  assert(BigInt("0") === 0n);
  assert(BigInt("1") === 1n);
  assert(BigInt("+1") === 1n);
  assert(BigInt("-1") === -1n);
  assert(BigInt("-1") === -1n);
  assert(BigInt([]) === 0n);
  assert(BigInt("42") === 42n);
  assert(BigInt("  \n  00100  \n  ") === 100n);
  assert(BigInt(123n) === 123n);
  assert(
    BigInt("3323214327642987348732109829832143298746432437532197321") ===
      3323214327642987348732109829832143298746432437532197321n
  );

  assertThrowsError(
    () => {
      new BigInt();
    },
    {
      error: TypeError,
      message: "BigInt is not a constructor",
    }
  );

  [null, undefined, Symbol()].forEach(value => {
    assertThrowsError(
      () => {
        BigInt(value);
      },
      {
        error: TypeError,
        message:
          typeof value === "symbol"
            ? "Cannot convert symbol to BigInt"
            : `Cannot convert ${value} to BigInt`,
      }
    );
  });

  ["foo", "123n", "1+1", {}, function () {}].forEach(value => {
    assertThrowsError(
      () => {
        BigInt(value);
      },
      {
        error: SyntaxError,
        message: `Invalid value for BigInt: ${value}`,
      }
    );
  });

  [1.23, Infinity, -Infinity, NaN].forEach(value => {
    assertThrowsError(
      () => {
        BigInt(value);
      },
      {
        error: RangeError,
        message: "BigInt argument must be an integer",
      }
    );
  });

  console.log("PASS");
} catch (e) {
  console.log("FAIL: " + e);
}