}
		defer z.Close()

		for _, f := range z.File {
			// Make file a directory
			f.Name += "/"

			t.Run(f.Name, func(t *testing.T) {
				t.Logf("CompressedSize64: %d, Flags: %#x", f.CompressedSize64, f.Flags)

				rd, err := f.Open()
				if err != nil {
					t.Fatal(err)
				}
				defer rd.Close()

				n, got := io.Copy(io.Discard, rd)
				if n != 0 || got != ErrFormat {