dynatrace-cordova-outsystems-plugin/node_modules/json-stringify-safe/test/stringify_test.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

var Sinon = require("sinon")
var stringify = require("..")
function jsonify(obj) { return JSON.stringify(obj, null, 2) }

describe("Stringify", function() {
  it("must stringify circular objects", function() {
    var obj = {name: "Alice"}
    obj.self = obj
    var json = stringify(obj, null, 2)
    json.must.eql(jsonify({name: "Alice", self: "[Circular ~]"}))
  })

  it("must stringify circular objects with intermediaries", function() {
    var obj = {name: "Alice"}
    obj.identity = {self: obj}
    var json = stringify(obj, null, 2)
    json.must.eql(jsonify({name: "Alice", identity: {self: "[Circular ~]"}}))
  })

  it("must stringify circular objects deeper", function() {
    var obj = {name: "Alice", child: {name: "Bob"}}
    obj.child.self = obj.child

    stringify(obj, null, 2).must.eql(jsonify({
      name: "Alice",
      child: {name: "Bob", self: "[Circular ~.child]"}
    }))
  })

  it("must stringify circular objects deeper with intermediaries", function() {
    var obj = {name: "Alice", child: {name: "Bob"}}
    obj.child.identity = {self: obj.child}

    stringify(obj, null, 2).must.eql(jsonify({
      name: "Alice",
      child: {name: "Bob", identity: {self: "[Circular ~.child]"}}
    }))
  })

  it("must stringify circular objects in an array", function() {
    var obj = {name: "Alice"}
    obj.self = [obj, obj]

    stringify(obj, null, 2).must.eql(jsonify({
      name: "Alice", self: ["[Circular ~]", "[Circular ~]"]
    }))
  })

  it("must stringify circular objects deeper in an array", function() {
    var obj = {name: "Alice", children: [{name: "Bob"}, {name: "Eve"}]}
    obj.children[0].self = obj.children[0]
    obj.children[1].self = obj.children[1]

    stringify(obj, null, 2).must.eql(jsonify({
      name: "Alice",
      children: [
        {name: "Bob", self: "[Circular ~.children.0]"},
        {name: "Eve", self: "[Circular ~.children.1]"}
      ]
    }))
  })

  it("must stringify circular arrays", function() {
    var obj = []
    obj.push(obj)
    obj.push(obj)
    var json = stringify(obj, null, 2)
    json.must.eql(jsonify(["[Circular ~]", "[Circular ~]"]))
  })

  it("must stringify circular arrays with intermediaries", function() {
    var obj = []
    obj.push({name: "Alice", self: obj})
    obj.push({name: "Bob", self: obj})

    stringify(obj, null, 2).must.eql(jsonify([
      {name: "Alice", self: "[Circular ~]"},
      {name: "Bob", self: "[Circular ~]"}
    ]))
  })

  it("must stringify repeated objects in objects", function() {
    var obj = {}
    var alice = {name: "Alice"}
    obj.alice1 = alice
    obj.alice2 = alice

    stringify(obj, null, 2).must.eql(jsonify({
      alice1: {name: "Alice"},
      alice2: {name: "Alice"}
    }))
  })

  it("must stringify repeated objects in arrays", function() {
    var alice = {name: "Alice"}
    var obj = [alice, alice]
    var json = stringify(obj, null, 2)
    json.must.eql(jsonify([{name: "Alice"}, {name: "Alice"}]))
  })

  it("must call given decycler and use its output", function() {
    var obj = {}
    obj.a = obj
    obj.b = obj

    var decycle = Sinon.spy(function() { return decycle.callCount })
    var json = stringify(obj, null, 2, decycle)
    json.must.eql(jsonify({a: 1, b: 2}, null, 2))

    decycle.callCount.must.equal(2)
    decycle.thisValues[0].must.equal(obj)
    decycle.args[0][0].must.equal("a")
    decycle.args[0][1].must.equal(obj)
    decycle.thisValues[1].must.equal(obj)
    decycle.args[1][0].must.equal("b")
    decycle.args[1][1].must.equal(obj)
  })

  it("must call replacer and use its output", function() {
    var obj = {name: "Alice", child: {name: "Bob"}}

    var replacer = Sinon.spy(bangString)
    var json = stringify(obj, replacer, 2)
    json.must.eql(jsonify({name: "Alice!", child: {name: "Bob!"}}))

    replacer.callCount.must.equal(4)
    replacer.args[0][0].must.equal("")
    replacer.args[0][1].must.equal(obj)
    replacer.thisValues[1].must.equal(obj)
    replacer.args[1][0].must.equal("name")
    replacer.args[1][1].must.equal("Alice")
    replacer.thisValues[2].must.equal(obj)
    replacer.args[2][0].must.equal("child")
    replacer.args[2][1].must.equal(obj.child)
    replacer.thisValues[3].must.equal(obj.child)
    replacer.args[3][0].must.equal("name")
    replacer.args[3][1].must.equal("Bob")
  })

  it("must call replacer after describing circular references", function() {
    var obj = {name: "Alice"}
    obj.self = obj

    var replacer = Sinon.spy(bangString)
    var json = stringify(obj, replacer, 2)
    json.must.eql(jsonify({name: "Alice!", self: "[Circular ~]!"}))

    replacer.callCount.must.equal(3)
    replacer.args[0][0].must.equal("")
    replacer.args[0][1].must.equal(obj)
    replacer.thisValues[1].must.equal(obj)
    replacer.args[1][0].must.equal("name")
    replacer.args[1][1].must.equal("Alice")
    replacer.thisValues[2].must.equal(obj)
    replacer.args[2][0].must.equal("self")
    replacer.args[2][1].must.equal("[Circular ~]")
  })

  it("must call given decycler and use its output for nested objects",
    function() {
    var obj = {}
    obj.a = obj
    obj.b = {self: obj}

    var decycle = Sinon.spy(function() { return decycle.callCount })
    var json = stringify(obj, null, 2, decycle)
    json.must.eql(jsonify({a: 1, b: {self: 2}}))

    decycle.callCount.must.equal(2)
    decycle.args[0][0].must.equal("a")
    decycle.args[0][1].must.equal(obj)
    decycle.args[1][0].must.equal("self")
    decycle.args[1][1].must.equal(obj)
  })

  it("must use decycler's output when it returned null", function() {
    var obj = {a: "b"}
    obj.self = obj
    obj.selves = [obj, obj]

    function decycle() { return null }
    stringify(obj, null, 2, decycle).must.eql(jsonify({
      a: "b",
      self: null,
      selves: [null, null]
    }))
  })

  it("must use decycler's output when it returned undefined", function() {
    var obj = {a: "b"}
    obj.self = obj
    obj.selves = [obj, obj]

    function decycle() {}
    stringify(obj, null, 2, decycle).must.eql(jsonify({
      a: "b",
      selves: [null, null]
    }))
  })

  it("must throw given a decycler that returns a cycle", function() {
    var obj = {}
    obj.self = obj
    var err
    function identity(key, value) { return value }
    try { stringify(obj, null, 2, identity) } catch (ex) { err = ex }
    err.must.be.an.instanceof(TypeError)
  })

  describe(".getSerialize", function() {
    it("must stringify circular objects", function() {
      var obj = {a: "b"}
      obj.circularRef = obj
      obj.list = [obj, obj]

      var json = JSON.stringify(obj, stringify.getSerialize(), 2)
      json.must.eql(jsonify({
        "a": "b",
        "circularRef": "[Circular ~]",
        "list": ["[Circular ~]", "[Circular ~]"]
      }))
    })

    // This is the behavior as of Mar 3, 2015.
    // The serializer function keeps state inside the returned function and
    // so far I'm not sure how to not do that. JSON.stringify's replacer is not
    // called _after_ serialization.
    xit("must return a function that could be called twice", function() {
      var obj = {name: "Alice"}
      obj.self = obj

      var json
      var serializer = stringify.getSerialize()

      json = JSON.stringify(obj, serializer, 2)
      json.must.eql(jsonify({name: "Alice", self: "[Circular ~]"}))

      json = JSON.stringify(obj, serializer, 2)
      json.must.eql(jsonify({name: "Alice", self: "[Circular ~]"}))
    })
  })
})

function bangString(key, value) {
  return typeof value == "string" ? value + "!" : value
}