Error: Unable to access 'nativeElement' property from undefined object when trying to read HTML element in Angular with Jasmine testing

There is a failure in the below case, while the same scenario passes in another location.

  it('login labels', () => {
    const terms = fixture.nativeElement as HTMLElement;
    expect(terms.querySelector('#LoginUsernameLabel')?.textContent).toContain("User ID");
  });

HTML

<div class="col-12 row align-items-center hb-login-container" id="Login">
  <section class="col-10 offset-1 col-sm-8 offset-sm-2 col-md-6 offset-md-3 col-lg-4 offset-lg-4 hb-login-box"
    id="HBLoginBoxSection">
    <h1 class="mb-4" id="HBLoginHeading">Login</h1>
    <form [formGroup]="loginForm" (ngSubmit)="onSubmit()" class="col-12 p-0 hb-login-form" id="HBLoginForm">
      <div class="form-group">
        <label for="LoginUsername" class="hb-form-label" id="LoginUsernameLabel" [ngClass]="{
            'hb-field-error':
              !!f.username.invalid &&
              (!!f.username.dirty || !!f.username.touched)
          }">User ID</label>

An error is occurring: 

TypeError: Cannot read properties of undefined (reading 'nativeElement')

This test case should pass.

angulartypescriptkarma-jasmine

Answer №1

Perhaps the issue lies in the configuration of your test environment. Without more details on how your tests are set up, it's difficult to pinpoint the exact cause of the problem.

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