for _, tt := range pathEscapeTests {
		actual := PathEscape(tt.in)
		if tt.out != actual {
			t.Errorf("PathEscape(%q) = %q, want %q", tt.in, actual, tt.out)
		}

		// for bonus points, verify that escape:unescape is an identity.
		roundtrip, err := PathUnescape(actual)
		if roundtrip != tt.in || err != nil {
			t.Errorf("PathUnescape(%q) = %q, %s; want %q, %s", actual, roundtrip, err, tt.in, "[no error]")