A function to test if all svg objects are visible

A function to test if all svg objects are visible

By : safeerazhar
Date : November 25 2020, 09:00 AM
To fix this issue Im making a simple memory game within svg and javascript. The basic outline of the game is to match the correct shapes. There is a total of 20 rect. I am now trying to create a function that checks when all the rects opacity are 0, create an alert box and stop my timer. Im wondering how to do this, this is my code so far. in advance. , I assume the images are in some kind of Container like this:
code :
<div id="testContainer">
 <img src="">
 <img src="">
 <img src="">
 <img src="">
var counter = 0
var children = document.getElementById("testContainer").children;
for (var i = 0; i < children.length; i++) {
   if(children[i].style.opacity === 0)
if(counter === 20){
   // stop timer
   counter = 0;
<rect class="shapeToFlip" x="20" y="2" rx="20" ry="20" width="600" height="480"     style="fill:rgb(197, 213, 209)"/>
var allShapes = document.getElementsByClassName("shapeToFlip");

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How to test function depending on other objects in jasmine unit test

How to test function depending on other objects in jasmine unit test

By : Luiggi
Date : March 29 2020, 07:55 AM
this one helps. Your method getParticipants is doing a lot of things.. actually 3 things, so I rather will try to make it focus in one only thing: build the Myappp.Collections.UsersCollection. And move all the previous needed calculations to another methods.
And then you'll can focus in the very tricky one: to mock the new call.
code :
Myapp.Models.Event = 
    getParticipants: function(){
      var usersArray   = this.get("participations").getUsers();
      var participants = new Myapp.Collections.UsersCollection(usersArray);

      return participants;

Myapp.Collections.ParticipationsCollection = 
    getUsers: function(){
      var users = 
          return participation.get("user");

      return users;
Myapp.Models.Event = 
    getParticipants: function(){
      var usersArray   = this.getUsersArray();
      var participants = new Myapp.Collections.UsersCollection( usersArray );

      return participants;

    getUsersArray: function(){
      return this.get("participations").getUsers();
describe("Event", function() {
    testModel = new Myapp.Models.Event();

  it("getParticipants returns proper Collection", function() {
    var usersCollectionSpy = sinon.spy( Myapp.Collections, "UsersCollection" );

    var getUsersArrayMock = sinon.stub(testModel, "getUsersArray");
    getUsersArrayMock.returns( "usersArray" );


    expect( usersCollectionSpy.calledWith( "usersArray" ) ).toBeTruthy();
    expect( usersCollectionSpy.calledWithNew() ).toBeTruthy();
Is there a function to test if objects match other objects?

Is there a function to test if objects match other objects?

By : user2939860
Date : March 29 2020, 07:55 AM
it helps some times I have an object like this but more complex: , Probably you can use deepEqual() or modify it to your needs
code :
var deepTest = function (x, y) {
  if ((typeof x == "object" && x != null) && (typeof y == "object" && y != null)) {
    if (Object.keys(x).length != Object.keys(y).length)
      return false;

    for (var prop in x) {
      if (y.hasOwnProperty(prop))
        if (! deepEqual(x[prop], y[prop]))
          return false;
        return false;

    return true;
  else if(x && (typeof y != "undefined")) return true; else return false;

Why does the function t return a t.test for objects with class set to "test"?

Why does the function t return a t.test for objects with class set to "test"?

By : James Vickers
Date : March 29 2020, 07:55 AM
will be helpful for those in need If you run t(a), where a is your object of class test, then UseMethod("t") is called. This will check what the class of the first argument that you provided to t() is. The class is test and R will now look for a function t.test(). Since t.test() exists, t.test(a) is run. This is called "method dispatch".
Only if t.test() did not exist, R would resort to calling t.default(). You can actually even see this happen, by detaching the stats package before running t(a):
code :
a <- structure(1:4, class = "test")
##      [,1] [,2] [,3] [,4]
## [1,]    1    2    3    4
## attr(,"class")
## [1] "test"
info <- info[grep(name, row.names(info)), ]
info <- info[!row.names(info) %in% S3MethodsStopList, 
S3MethodsStopList <- tools:::.make_S3_methods_stop_list(NULL)
grep("^t\\.", tools:::.make_S3_methods_stop_list(NULL), value = TRUE)
##                 Hmisc6             calibrator                 mosaic               mratios1 
##       "t.test.cluster"                "t.fun"               "t.test"        "t.test.ration" 
##               mratios2               mratios3                 stats6 
## "t.test.ratio.default" "t.test.ratio.formula" 
How can I test a function that uses complex objects from an external API?

How can I test a function that uses complex objects from an external API?

By : user3181455
Date : March 29 2020, 07:55 AM
will help you Looks like the function accepts an object, calls a function on that object to generate a different object, calls a function on that object to generate an array, then calls a function on each object in the array.
Since it only knows about what is passed to it, you can pass appropriate mock data and use mock functions to confirm that it is working properly:
code :
const someFunction = (complexObj1) => {
  const someObj = complexObj1.generateAnObject();
  const objList = someObj.generateListOfObjects();

  for (const obj of objList) {

test('someFunction', () => {
  const objList = [
    { performAction: jest.fn() },
    { performAction: jest.fn() }
  const obj = {
    generateAnObject: () => ({
      generateListOfObjects: () => objList
  expect(objList[0].performAction).toHaveBeenCalled();  // Success!
  expect(objList[1].performAction).toHaveBeenCalled();  // Success!
Android espresso test - test if a view inside a recyclerview item is visible

Android espresso test - test if a view inside a recyclerview item is visible

By : AmirZia
Date : September 30 2020, 02:00 PM
it fixes the issue The code to check that the item with id 'star' is visible in the first element (position 0) of the 'rv_list' RecyclerView should be:
code :
    .atPositionOnView(0, R.id.star))
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