=== normalize() variants ===
INPUT:  http://example.com/public/%2e%2e/admin
OUTPUT: http://example.com/admin
---
INPUT:  http://example.com/public/%2E%2E/admin
OUTPUT: http://example.com/admin
---
INPUT:  http://example.com/public/%252e%252e/admin
OUTPUT: http://example.com/public/%25252e%25252e/admin
---
INPUT:  http://example.com/public/..%2fadmin
OUTPUT: http://example.com/admin
---
INPUT:  http://example.com/public/%2e.%2fadmin
OUTPUT: http://example.com/admin
---
INPUT:  http://example.com/public/%2e%2e%2fadmin
OUTPUT: http://example.com/admin
---
INPUT:  http://example.com/public/%c0%ae%c0%ae%c0%afadmin
OUTPUT: http://example.com/public/%25C0%25AE%25C0%25AE%25C0%25AFadmin
---
INPUT:  http://example.com/public/%2e%2e%5cadmin
OUTPUT: http://example.com/public/..%255Cadmin
---
INPUT:  http://example.com/a%2Fb
OUTPUT: http://example.com/a/b
---
INPUT:  http://example.com/a/b/%2e%2e/%2e%2e/c
OUTPUT: http://example.com/c
---
INPUT:  http://example.com/foo/%2e%2e%2fbar
OUTPUT: http://example.com/bar
---
INPUT:  http://example.com/public/%2e%2e%2f%2e%2e%2fadmin
OUTPUT: http://example.com/admin
---
INPUT:  http://example.com/public/%2e%2e%2f%2e%2e%2fetc%2fpasswd
OUTPUT: http://example.com/etc/passwd
---

=== equal() variants ===
equal('http://example.com/public/%2e%2e/admin', 'http://example.com/admin') => true
equal('http://example.com/public/%2E%2E/admin', 'http://example.com/admin') => true
equal('http://example.com/public/%252e%252e/admin', 'http://example.com/admin') => true
equal('http://example.com/public/..%2fadmin', 'http://example.com/admin') => true
equal('http://example.com/a%2Fb', 'http://example.com/a/b') => true

=== resolve() variants ===
resolve('http://example.com/public/', '%2e%2e%2fadmin') => http://example.com/admin
resolve('http://example.com/public/', '..%2fadmin') => http://example.com/admin
resolve('http://example.com/public/', '%2e%2e/admin') => http://example.com/admin