How to write Unit Test in cakephp 4.x.x

Need Help
1

Hello, Can someone please give me an example, how am I supposed to write a unit test for a Controller’s method? I am familiar with the examples in the documentation, but that does not help me.
I need an example for a specific controller’s method. What are the steps? Thanks in advance.

2

The documentation on Controller Integration Testing is pretty thorough on this topic. What does your test look like so far, and what’s not working about it?

1 Like
3

Hello, Thanks for your response. I know how to do integration tests, but this is not the point. I want to do Unit Tests. Let me give you an example of what I am trying to do and the test fails.
I have this link: $this->get(“localhost/myProject/Controller/action”);
In the response body this generates:

Signing document

When I try to assert: $this->assertResponseContains(‘Signing document’); It fails.
What am I doing wrong?

4

Is “localhost/myProject/Controller/action” the actual URL you’re trying to get? Because that looks very wrong. You should be doing $this->assertResponseOk(); first, to make sure the request succeeded. Then (string)$this->_response->getBody() will get you the actual body contents for debugging purposes.

5

I feel your pain.

The advice from @Zuluru should get you on the road. But when the initial $this->assertResponseOk() fails, I have found to pretty inconvenient to discover what DID happen.

Lately I have been using a DebugTrait in my tests that includes this knocked-together bit:

    public function writeFile($name = 'debug')
    {
        $file_name = "$name.html";
        $file = new File(WWW_ROOT . $file_name);
        $result = $file->write($this->_getBodyAsString(), 'w', true);
        debug($result ? "http://dev.ampfg4.com/$file_name" : "failed to write $file_name");
        $file->close();
    }

Then when I have a test that is giving me trouble I can use the trait method like this:

        $this->get("orders/delete/$order->id/$hash");
        $this->writeFile();

Then in the test results pane (I use PHPStorm for dev and testing) I see this:

Screen Shot 2022-03-10 at 10.33.51 AM
Screen Shot 2022-03-10 at 10.33.51 AM748×362 19.7 KB

In my IDE, this is a live link and I can see the page that the test generated.

If there was a 500 error or some other anomalous result, I can see what was returned.

Notes:

  • The page is just dumped into webroot.
  • The File class is deprecated but works fine.
  • Make $name dynamic if you are using a dataProvider for your test and need to see multiple resulting pages.