package game

import "testing"

// ParseDice must keep the exact semantics of the C roll_em parse loop,
// including its junk-tolerant edges: the bestiary placeholder "%%%x0" and
// the flytrap reset "000x0" both mean a single 0x0 attack.
func TestParseDice(t *testing.T) {
	cases := []struct {
		in   string
		want string
		len  int
	}{
		{"1x4", "1x4", 1},
		{"1x2/1x5/1x5", "1x2/1x5/1x5", 3},
		{"2x12/2x4", "2x12/2x4", 2},
		{"0x0", "0x0", 1},
		{"000x0", "0x0", 1},
		{"%%%x0", "0x0", 1},
		{"", "", 0},
		{"3", "", 0}, // no 'x': C parses nothing
	}
	for _, c := range cases {
		got := ParseDice(c.in)
		if len(got) != c.len || got.String() != c.want {
			t.Errorf("ParseDice(%q) = %v (len %d), want %q (len %d)",
				c.in, got, len(got), c.want, c.len)
		}
	}
}

// The bestiary and weapon tables must parse to at least one attack each so
// every creature and weapon actually swings.
func TestTablesHaveDice(t *testing.T) {
	for i, m := range monsterTable {
		if len(m.Stats.Dmg) == 0 {
			t.Errorf("monster %c (%s) has no attacks", 'A'+i, m.Name)
		}
	}
	for w, iw := range initWeaps {
		if len(iw.dam) == 0 || len(iw.hrl) == 0 {
			t.Errorf("weapon %v has empty dice", WeaponKind(w))
		}
	}
}