Want to validate the part of a string shouldn't be null - cypress

Question

I have this following element which contain a string for Practitioner, its value is 1- zzz. How to validate after - it shouldn't be null. Even if there is a string or empty. It shouldn't print null. Also want to select the value under Practitioner (currently hard coded the position of the element as 2)
<div class="styles__container___BfTYi">
<div class="styles__subHeader___18Yg1">Practitioner</div>
<div class="styles__data___1senX">1- zzz</div>
</div>
I have the following code to retrieve the text,
cy.get(pageSelector.practitionerValidator).eq(2).then(function($getText) {
let practitionerName = $getText.text();
var validateLastName = practitionerName.split(' ');
cy.log(validateLastName[1]);
expect(validateLastName[1]).to.not.equal('null');
})

Answer 1

You can directly check that the entire string is not null like this:
cy.get('.styles__data___1senX').then(($ele) => {
expect($ele.text()).to.not.be.null
})
Or if you want to check that your inner text is not empty you can do:
cy.get('.styles__data___1senX').then(($ele) => {
expect($ele.text()).to.not.be.empty
})
You can find the selector from the text Practitioner like this:
cy.contains('Practitioner')
.parent()
.within(() => {
cy.get('div[class*="styles__data__"]').then(($ele) => {
expect($ele.text()).to.not.be.null
})
})

Answer 2

Appreciate the level of detail you gave.
I will be going off this assumption.
the Practitioner string will be random can spaces or no spaces after the - (ie 34- sdfwe, 3- , 1- )
I would use a regex to check the format of the string to check the string starts with a digit followed by a dash and a space with either a string, spaces, or nothing. /\d+\-\s(\w+|\s+)?/
Your code would look a bit like this.
cy.get(pageSelector.practitionerValidator)
.eq(2)
.invoke('text') // get text
.should('match', /\d+\-\s(\w+|\s+)?/) // use regex assertion