mocha & power-assert cannot output the descriptive assertion messages #119
Description
I am trying to use official demo with power-assert. After Mocha run the unit test, it output func.apply(thisObj, args) insted of the descriptive assertion messages.
spec.js
const assert = require('power-assert'); describe('Array', function(){ let ary; beforeEach(() => { ary = [1,2,3]; }); describe('#indexOf()', () => { it('should return index when the value is present', () => { const zero = 0, two = 2; assert(ary.indexOf(zero) === two); }); it('should return -1 when the value is not present', () => { const minusOne = -1, two = 2; assert.ok(ary.indexOf(two) === minusOne, 'THIS IS AN ASSERTION MESSAGE'); }); }); }); describe('various types', () => { let types; class Person { constructor(name, age) { this.name = name; this.age = age; } } beforeEach(() => { types = [ 'string', 98.6, true, false, null, undefined, ['nested', 'array'], {object: true}, NaN, Infinity, /^not/, new Person('alice', 3) ]; }); it('demo', () => { const index = types.length -1, bob = new Person('bob', 5); assert(types[index].name === bob.name); }); });ouput
Array #indexOf() 1) should return index when the value is present 2) should return -1 when the value is not present various types 3) demo 0 passing (15ms) 3 failing 1) Array #indexOf() should return index when the value is present: AssertionError [ERR_ASSERTION]: The expression evaluated to a falsy value: func.apply(thisObj, args) + expected - actual -false +true at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20) at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17) at decoratedAssert (node_modules/empower-core/lib/decorate.js:51:30) at powerAssert (node_modules/empower-core/index.js:63:32) at Context.it (test/index.spec.js:11:7) 2) Array #indexOf() should return -1 when the value is not present: AssertionError [ERR_ASSERTION]: THIS IS AN ASSERTION MESSAGE + expected - actual -false +true at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20) at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17) at Function.decoratedAssert [as ok] (node_modules/empower-core/lib/decorate.js:51:30) at Context.it (test/index.spec.js:15:14) 3) various types demo: AssertionError [ERR_ASSERTION]: The expression evaluated to a falsy value: func.apply(thisObj, args) + expected - actual -false +true at Decorator._callFunc (node_modules/empower-core/lib/decorator.js:110:20) at Decorator.concreteAssert (node_modules/empower-core/lib/decorator.js:103:17) at decoratedAssert (node_modules/empower-core/lib/decorate.js:51:30) at powerAssert (node_modules/empower-core/index.js:63:32) at Context.it (test/index.spec.js:41:5) Mocha v6.1.4
power-assert v1.6.1
Node v10.15.2