Tests for parsed majors in production

[rael346]

This ticket is mainly for backwards compatibility. Since we are iterating on a large amount of majors while still supporting the already hand validated majors in the GraduateNU's backend, we need to ensure:

• Changes we make to fix the newer majors doesn't break the old ones
• Have fix for hand validated errors that the scraper can handle

Current tests in scrapers are fairly rudimentary and doesn't address many edge cases that the major catalog is notorious for.

A few guidelines

• Errors that are mainly parser responsibility, i.e. the tokens are correct but the parser parses it incorrectly should be tests in parse.test.ts
• Errors that stems from tokens being wrong (not tokenizing a comment as a XOM, etc) should be in tokenize.test.ts
• Snapshot tests should be reserved for majors that has a distinct quality (Business with their separated concentration pages, etc)

[riddhigupta06]

Run major scraper for a given major and year. Check the errors that arise by using the hand validated majors in graduate's backend.

Document interesting cases and figure out tests we can write.