package text

import "testing"

func TestTrimEnclosureFoldsPairedMarksInAnyScript(t *testing.T) {
	cases := []struct{ in, want string }{
		{"《咏梅》", "咏梅"},             // CJK book-title marks: the case measured in a live draft wave
		{"「名前」", "名前"},             // CJK corner brackets
		{"«Название»", "Название"}, // guillemets
		{"“Title”", "Title"},       // curly quotes
		{`"Title"`, "Title"},       // ASCII quotes (category Po — not covered by Ps/Pe)
		{"(термин)", "термин"},
		{"《《двойное》》", "двойное"}, // repeats until the ends stop pairing
		{"咏梅", "咏梅"},               // nothing to trim
		{"O'Brien", "O'Brien"},     // an apostrophe inside a word is not an enclosure
		{"咏梅》", "咏梅》"},             // one-sided: left visibly wrong rather than silently repaired
		{"「」", "「」"},               // an empty pair is never trimmed to nothing
		{"", ""},
	}
	for _, c := range cases {
		if got := TrimEnclosure(c.in); got != c.want {
			t.Errorf("TrimEnclosure(%q) = %q, want %q", c.in, got, c.want)
		}
	}
}

// TestNormVersionUnmovedByEnclosureTrim is the axis pin: the trim lives outside the normalization
// artifact, so shipping it moves no snapshot and re-bills no book. If someone folds it into
// NormalizeSourceKey, this literal must be updated deliberately — which is a --resnapshot decision.
func TestNormVersionUnmovedByEnclosureTrim(t *testing.T) {
	if NormalizeSourceKey("《咏梅》") == NormalizeSourceKey("咏梅") {
		t.Fatal("the normalizer must NOT trim enclosures: that would re-verdict every match the bank ever made")
	}
	const want = "memnorm-v3-nfkc+apos+stripignorable+trad+kana+lower/nfc+dash+apos+stripignorable+lower+yofold+u15.0.0+xtextv0.40.0"
	if got := NormVersion(); len(got) < len(want) || got[:len(want)] != want {
		t.Fatalf("the normalization artifact version moved: %q", got)
	}
}