package main

import "testing"

func TestLooksLikeName(t *testing.T) {
	cases := []struct {
		name string
		ok   bool
	}{
		// Latin: the usual case.
		{"Vaike", true},
		{"Jean-Paul", true},
		{"O'Brien", true},
		{"Tarnished 2", true},

		// Cyrillic.
		{"Иван", true},
		{"Мария Петровна", true},

		// Hangul.
		{"지우", true},
		{"김민준", true},

		// CJK: Han, Hiragana, and Katakana count as a single family
		// because Japanese mixes them in one name.
		{"田中", true},    // Han alone (also valid in Chinese)
		{"たろう", true},   // Hiragana alone
		{"タロウ", true},   // Katakana alone
		{"田中たかし", true}, // Han + Hiragana, typical Japanese name

		// Cases that MUST keep failing (regression, see CLAUDE.md):
		// Greek + Han mixed, the garbage a 64-bit pointer decodes into
		// when read as UTF-16.
		{"ᾘ䱷翶", false},

		// Mixing two ACCEPTED families is still mixing: not a valid
		// name in any real language.
		{"Аnna", false}, // Cyrillic А + Latin nna

		// The usual rules: length, leading punctuation, digits-only.
		{"", false},
		{"A", false},
		{"WayTooLongOfANameToBeRealHonestly", false},
		{"-Starts", false},
		{"123", false},
		{"Ok 123", true},
	}

	for _, c := range cases {
		if got := looksLikeName(c.name); got != c.ok {
			t.Errorf("looksLikeName(%q) = %v, wanted %v", c.name, got, c.ok)
		}
	}
}