import { calc, tokenize } from './solution';
import { expect } from "chai";

var tests: [string, number][] = [
  ['1+1', 2],
  ['1 - 1', 0],
  ['1* 1', 1],
  ['1 /1', 1],
  ['-123', -123],
  ['123', 123],
  ['2 /2+3 * 4.75- -6', 21.25],
  ['12* 123', 1476],
  ['2 / (2 + 3) * 4.33 - -6', 7.732],
  ['(2 + (2 + 2) / 4) * 3', 9],
  ['(1 - 2) + -(-(-(-4)))', 3],
  ['((2.33 / (2.9+3.5)*4) - -6)', 7.45625]
];

describe("calc", function () {
  it("should evaluate correctly", () => {
    tests.forEach(function (m) {
      var x = calc(m[0]);
      var y = m[1];
      expect(x).to.equal(y, 'Expected: "' + m[0] + '" to be ' + y + ' but got ' + x);
    });
  });
});

describe("tokenize", function () {
  it("should tokenize correctly", () => {
    expect(tokenize('1 + 1')).to.deep.equal([{
      type: 'number',
      value: '1'
    }, {
      type: 'operator',
      value: '+'
    }, {
      type: 'number',
      value: '1'
    }]);
    expect(tokenize('1 - 1')).to.deep.equal([{
      type: 'number',
      value: '1'
    }, {
      type: 'operator',
      value: '-'
    }, {
      type: 'number',
      value: '1'
    }]);
    expect(tokenize('1 * 1')).to.deep.equal([{
      type: 'number',
      value: '1'
    }, {
      type: 'operator',
      value: '*'
    }, {
      type: 'number',
      value: '1'
    }]);
    expect(tokenize('1 / 1')).to.deep.equal([{
      type: 'number',
      value: '1'
    }, {
      type: 'operator',
      value: '/'
    }, {
      type: 'number',
      value: '1'
    }]);
    expect(tokenize('-3.1415')).to.deep.equal([{
      type: 'operator',
      value: '-'
    }, {
      type: 'number',
      value: '3'
    }, {
      type: 'decimal',
      value: '.'
    }, {
      type: 'number',
      value: '1415'
    }]);
    expect(tokenize('3.1415')).to.deep.equal([{
      type: 'number',
      value: '3'
    }, {
      type: 'decimal',
      value: '.'
    }, {
      type: 'number',
      value: '1415'
    }]);
    expect(tokenize('(3 + 5) / 3')).to.deep.equal([{
      type: 'parenthesis',
      value: '('
    }, {
      type: 'number',
      value: '3'
    }, {
      type: 'operator',
      value: '+'
    }, {
      type: 'number',
      value: '5'
    }, {
      type: 'parenthesis',
      value: ')'
    }, {
      type: 'operator',
      value: '/'
    }, {
      type: 'number',
      value: '3'
    }]);
  });
});