Add tests

[sonianb]

• Test that user can add post and
• post can be displayed

[mariaalouisaa]

Add:
after(() => { cy.task("resetDb"); });
at the end of the test.js file

[sonianb]

Tried that but still getting this error:

cy.task('resetDb') failed with the following error:

spawnSync ./scripts/populate_db ENOENT

Because this error occurred during a before each hook we are skipping all of the remaining test