simple-squiggle

A restricted subset of Squiggle
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union_types.test.js (543B)

      1 var assert = require('assert');
      2 var typed = require('../typed-function');
      3 
      4 describe('union types', function () {
      5 
      6   it('should create a typed function with union types', function() {
      7     var fn = typed({
      8       'number | boolean': function (arg) {
      9         return typeof arg;
     10       }
     11     });
     12 
     13     assert.equal(fn(true), 'boolean');
     14     assert.equal(fn(2), 'number');
     15     assert.throws(function () {fn('string')}, /TypeError: Unexpected type of argument in function unnamed \(expected: number or boolean, actual: string, index: 0\)/);
     16   });
     17 
     18 });