package main

import "testing"

func TestParseRange(t *testing.T) {
	cases := []struct {
		hdr               string
		size, off, length int64
		partial, ok       bool
	}{
		{"", 100, 0, 100, false, true},
		{"bytes=0-9", 100, 0, 10, true, true},
		{"bytes=90-", 100, 90, 10, true, true},
		{"bytes=-5", 100, 95, 5, true, true},
		{"bytes=-500", 100, 0, 100, true, true},
		{"bytes=50-1000", 100, 50, 50, true, true},
		{"bytes=100-", 100, 0, 0, false, false},
		{"bytes=9-3", 100, 0, 0, false, false},
		{"bytes=0-1,5-6", 100, 0, 100, false, true}, // multi-range: whole file
	}
	for _, c := range cases {
		off, length, partial, ok := parseRange(c.hdr, c.size)
		if ok != c.ok || (ok && (off != c.off || length != c.length || partial != c.partial)) {
			t.Errorf("%q/%d: got %d,%d,%v,%v want %d,%d,%v,%v", c.hdr, c.size, off, length, partial, ok, c.off, c.length, c.partial, c.ok)
		}
	}
}

func TestCleanName(t *testing.T) {
	for in, want := range map[string]string{
		"song.mp3": "song.mp3", "a/b/c.txt": "c.txt", `..\..\x.png`: "x.png", "..": "", "": "", "  photo.jpg ": "photo.jpg",
	} {
		if got := cleanName(in); got != want {
			t.Errorf("cleanName(%q) = %q, want %q", in, got, want)
		}
	}
}