n, got := io.Copy(io.Discard, rd)
				if n != 0 || got != ErrFormat {
					t.Fatalf("Error mismatch, got: %d, %v, want: %v", n, got, ErrFormat)
				}
			})
		}
	}
}

func TestInsecurePaths(t *testing.T) {
	t.Setenv("GODEBUG", "zipinsecurepath=0")
	for _, path := range []string{
		"../foo",
		"/foo",
		"a/b/../../../c",
		`a\b`,
	} {
		var buf bytes.Buffer