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node_modules/pretty-error/test/PrettyError.coffee

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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()