IntSize.ts

/*!
 * Copyright 2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

import { assert } from "chai";
import IntSize from "../src/IntSize";
import * as ion from "../src/Ion";
import { IonTypes } from "../src/Ion";

function intToBinaryIonBytes(value: number | bigint): Uint8Array {
  let writer = ion.makeBinaryWriter();
  writer.writeInt(value);
  writer.close();
  return writer.getBytes();
}

describe("IntSize", () => {
  describe("text", () => {
    it("MAX_SAFE_INTEGER: IntSize.Number", () => {
      let reader = ion.makeReader(Number.MAX_SAFE_INTEGER.toString());
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.Number);
    });

    it("MIN_SAFE_INTEGER: IntSize.Number", () => {
      let reader = ion.makeReader(Number.MIN_SAFE_INTEGER.toString());
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.Number);
    });

    it("> MAX_SAFE_INTEGER: IntSize.BigInt", () => {
      let value = BigInt(Number.MAX_SAFE_INTEGER) + 1n;
      let reader = ion.makeReader(value.toString());
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.BigInt);
    });

    it("< MIN_SAFE_INTEGER: IntSize.BigInt", () => {
      let value = BigInt(Number.MIN_SAFE_INTEGER) - 1n;
      let reader = ion.makeReader(value.toString());
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.BigInt);
    });
  });

  describe("binary", () => {
    it("MAX_SAFE_INTEGER: IntSize.Number", () => {
      let reader = ion.makeReader(intToBinaryIonBytes(Number.MAX_SAFE_INTEGER));
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.Number);
    });

    it("MIN_SAFE_INTEGER: IntSize.Number", () => {
      let reader = ion.makeReader(intToBinaryIonBytes(Number.MIN_SAFE_INTEGER));
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.Number);
    });

    it("> MAX_SAFE_INTEGER: IntSize.BigInt", () => {
      let value = BigInt(Number.MAX_SAFE_INTEGER) + 1n;
      let reader = ion.makeReader(intToBinaryIonBytes(value));
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.BigInt);
    });

    it("< MIN_SAFE_INTEGER: IntSize.BigInt", () => {
      let value = BigInt(Number.MIN_SAFE_INTEGER) - 1n;
      let reader = ion.makeReader(intToBinaryIonBytes(value));
      assert.equal(IonTypes.INT, reader.next());
      assert.equal(reader.intSize(), IntSize.BigInt);
    });
  });
});