github.com/hirochachacha/plua@v0.0.0-20170217012138-c82f520cc725/stdlib/utf8/testdata/codes.lua (about)

     1  f, t, k = utf8.codes("あい")
     2  
     3  k, v = f(t, k)
     4  assert(k == 1 and v == 12354)
     5  
     6  k, v = f(t, k)
     7  assert(k == 4 and v == 12356)
     8  
     9  assert(f(t, k) == nil)
    10  
    11  assert(not pcall(f, "\xff", 0))
    12  assert(not pcall(f, "a\xff", 1))