*** Test in-uri schemes

CFG: {x.prefix: http://example.org}
URI: http://example.org/foo
     ('x', 'x')
URI: http://example.org/foo/bar
     ('x', 'x')
URI: http://example.org/bar
     ('x', 'x')
URI: https://example.org/foo
     abort
URI: https://example.org/foo/bar
     abort
URI: https://example.org/bar
     abort
CFG: {x.prefix: https://example.org}
URI: http://example.org/foo
     abort
URI: http://example.org/foo/bar
     abort
URI: http://example.org/bar
     abort
URI: https://example.org/foo
     ('x', 'x')
URI: https://example.org/foo/bar
     ('x', 'x')
URI: https://example.org/bar
     ('x', 'x')
CFG: {x.prefix: http://example.org, x.schemes: https}
URI: http://example.org/foo
     ('x', 'x')
URI: http://example.org/foo/bar
     ('x', 'x')
URI: http://example.org/bar
     ('x', 'x')
URI: https://example.org/foo
     abort
URI: https://example.org/foo/bar
     abort
URI: https://example.org/bar
     abort
CFG: {x.prefix: https://example.org, x.schemes: http}
URI: http://example.org/foo
     abort
URI: http://example.org/foo/bar
     abort
URI: http://example.org/bar
     abort
URI: https://example.org/foo
     ('x', 'x')
URI: https://example.org/foo/bar
     ('x', 'x')
URI: https://example.org/bar
     ('x', 'x')

*** Test separately configured schemes

CFG: {x.prefix: example.org, x.schemes: http}
URI: http://example.org/foo
     ('x', 'x')
URI: http://example.org/foo/bar
     ('x', 'x')
URI: http://example.org/bar
     ('x', 'x')
URI: https://example.org/foo
     abort
URI: https://example.org/foo/bar
     abort
URI: https://example.org/bar
     abort
CFG: {x.prefix: example.org, x.schemes: https}
URI: http://example.org/foo
     abort
URI: http://example.org/foo/bar
     abort
URI: http://example.org/bar
     abort
URI: https://example.org/foo
     ('x', 'x')
URI: https://example.org/foo/bar
     ('x', 'x')
URI: https://example.org/bar
     ('x', 'x')
CFG: {x.prefix: example.org, x.schemes: http https}
URI: http://example.org/foo
     ('x', 'x')
URI: http://example.org/foo/bar
     ('x', 'x')
URI: http://example.org/bar
     ('x', 'x')
URI: https://example.org/foo
     ('x', 'x')
URI: https://example.org/foo/bar
     ('x', 'x')
URI: https://example.org/bar
     ('x', 'x')

*** Test prefix matching

CFG: {x.prefix: http://example.org/foo, y.prefix: http://example.org/bar}
URI: http://example.org/foo
     ('x', 'x')
URI: http://example.org/foo/bar
     ('x', 'x')
URI: http://example.org/bar
     ('y', 'y')
URI: https://example.org/foo
     abort
URI: https://example.org/foo/bar
     abort
URI: https://example.org/bar
     abort
CFG: {x.prefix: http://example.org/foo, y.prefix: http://example.org/foo/bar}
URI: http://example.org/foo
     ('x', 'x')
URI: http://example.org/foo/bar
     ('y', 'y')
URI: http://example.org/bar
     abort
URI: https://example.org/foo
     abort
URI: https://example.org/foo/bar
     abort
URI: https://example.org/bar
     abort
CFG: {x.prefix: *, y.prefix: https://example.org/bar}
URI: http://example.org/foo
     abort
URI: http://example.org/foo/bar
     abort
URI: http://example.org/bar
     abort
URI: https://example.org/foo
     ('x', 'x')
URI: https://example.org/foo/bar
     ('x', 'x')
URI: https://example.org/bar
     ('y', 'y')