PrettyError.coffee
2.61 KB
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chai = require 'chai'
PrettyError = require '../src/PrettyError'
defaultStyle = require '../src/defaultStyle'
chai.should()
isFormatted = (exc) ->
exc.stack.indexOf(' \u001b[0m\u001b[97m\u001b[41m') is 0
error = (what) ->
if typeof what is 'string'
return error -> throw Error what
else if what instanceof Function
try
do what
catch e
return e
throw Error "bad argument for error"
describe "PrettyError", ->
describe "constructor()", ->
it "should work", ->
new PrettyError
describe "getObject", ->
it "should return a string", ->
p = new PrettyError
p.getObject(error "hello").should.be.an 'object'
describe "style", ->
it "should, by default, return the contents in `default-style`", ->
p = new PrettyError
p.style.should.eql defaultStyle()
it "should return different contents after appending some styles", ->
p = new PrettyError
p.appendStyle 'some selector': 'display': 'block'
p.style.should.not.eql defaultStyle()
describe "render()", ->
it "should work", ->
p = new PrettyError
p.skipNodeFiles()
p.appendStyle 'pretty-error': marginLeft: 4
e = error -> "a".should.equal "b"
console.log p.render e, no
e2 = error -> Array.split(Object)
console.log p.render e2, no
e3 = "Plain error message"
console.log p.render e3, no
e4 =
message: "Custom error message"
kind: "Custom Error"
console.log p.render e4, no
e5 =
message: "Error with custom stack"
stack: ['line one', 'line two']
wrapper: 'UnhandledRejection'
console.log p.render e5, no
e6 = error -> PrettyError.someNonExistingFuncion()
console.log p.render e6, no
it.skip "should render without colors if pe._useColors is false", ->
p = new PrettyError
p.withoutColors()
p.skipNodeFiles()
p.appendStyle 'pretty-error': marginLeft: 4
e = error -> "a".should.equal "b"
console.log p.render e, no
describe "start()", ->
prepareStackTrace = null
beforeEach ->
{prepareStackTrace} = Error
Error.prepareStackTrace = null
afterEach ->
Error.prepareStackTrace = prepareStackTrace
it "throws unformatted error when not started", ->
try
throw new Error "foo bar"
catch exc
isFormatted(exc).should.be.eql false
it "throws formatted the error", ->
PrettyError.start()
try
throw new Error "foo bar"
catch exc
isFormatted(exc).should.be.eql true
exc.stack.split(/\n/g).length.should.be.above 2
PrettyError.stop()