feat(test, e2e) test suit for cypress (#42138)

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

cypress/integration/learn/challenges/backend.js

@@ -1,41 +0,0 @@
-/* global cy */
-
-const locations = {
-  index:
-    'learn/apis-and-microservices/managing-packages-with-npm/' +
-    'how-to-use-package-json-the-core-of-any-node-js-project-or-npm-package'
-};
-
-const selectors = {
-  defaultOutput: '.output-text',
-  input: 'input[name="solution"]'
-};
-
-const unhandledErrorMessage = 'Something is not quite right';
-const runningOutput = '// running tests';
-const finishedOutput = '// tests completed';
-
-describe('Backend challenge', function () {
-  it('renders', () => {
-    cy.visit(locations.index);
-
-    cy.title().should(
-      'eq',
-      'Managing Packages with Npm - How to Use package.json, the Core of Any' +
-        ' Node.js Project or npm Package | Learn | freeCodeCamp.org'
-    );
-  });
-
-  it('does not generate unhandled errors on submission', () => {
-    cy.visit(locations.index);
-    cy.get(selectors.input)
-      .type('https://example.com')
-      .type('{enter}')
-      .then(() => {
-        cy.get(selectors.defaultOutput)
-          .contains(runningOutput)
-          .contains(finishedOutput);
-        cy.contains(unhandledErrorMessage).should('not.exist');
-      });
-  });
-});