package parse

import (
	"strings"
	"testing"
)

func TestIsGibberish(t *testing.T) {
	tests := []struct {
		name string
		text string
		want bool
	}{
		{"empty", "", true},
		{"too short", "hello", true},
		{"exactly 50 letters", strings.Repeat("a", 50), false},
		{"49 letters", strings.Repeat("a", 49), true},
		{"all punctuation", strings.Repeat(".", 100), true},
		{"1% alpha", strings.Repeat(".", 99) + "a", true},
		{"2% alpha exactly", strings.Repeat(".", 49) + "a" + strings.Repeat(".", 49) + "a", false},
		{"normal text", "The quick brown fox jumps over the lazy dog. " + strings.Repeat("word ", 10), false},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := isGibberish(tt.text); got != tt.want {
				t.Errorf("isGibberish(%q…) = %v, want %v", tt.text[:min(len(tt.text), 20)], got, tt.want)
			}
		})
	}
}

func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}