NullInjectorError: No provider for TreeHelperPipe - jasmine

I need some help please.
I don't understand why this test does not work.
I use a #pipe.
import { inject } from '#angular/core/testing';
import { TreeHelperPipe } from 'app/shared/components/material-tree/tree-helper.pipe';
describe('Tree helper', () => {
let pipe: TreeHelperPipe;
beforeEach(() => {
pipe = new TreeHelperPipe();
});
describe('truncateString', () => {
it(
`should have string truncate and replace some part by dots`,
inject([TreeHelperPipe], (_TreeHelperPipe: any) => {
const item =
'http://namespace-example.fr/service/technique/version/ged-sharepoint/1.1';
const expectedItem =
'http://namespace-example.fr/s...e/technique/version/ged-sharepoint/1.1';
expect(() => {
_TreeHelperPipe.transform(item, 60, '...').toBe(expectedItem);
});
})
);
});
});
Error: StaticInjectorError[TreeHelperPipe]: NullInjectorError: No
provider for TreeHelperPipe!
What's wrong with my test ?
Thanks for your help.

In this line:
inject([TreeHelperPipe], (_TreeHelperPipe: any) => {
You're trying to inject a Pipe, but you didn't create any module before that. That's why Angular doesn't find the pipe you're trying to inject.
That said, here you do not need a module and you can just create an instance as you've done here:
pipe = new TreeHelperPipe();
Then make your assertions by calling pipe.transform(your, arguments, here) (and do not forget to remove the line with inject).

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Basically cypress works in promise chain and you're returning the promise chainerid from your custom command. You have to chain it to use in next statement. Use something like below.
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I'm not, as far as I can see, using commands inside the promise as the warning suggests.
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