Re: [PATCHv2 2/3] git-p4 tests: work with python3 as well as python2

> Update the git-p4 tests so that they work with both
> Python2 and Python3.
>
> We have to be explicit about the difference between
> Unicode text strings (Python3 default) and raw binary
> strings which will be exchanged with Perforce.
>
> Additionally, print always takes braces in Python3.

>
> Signed-off-by: Luke Diamand <luke@diamand.org>
> ---
>  t/lib-git-p4.sh            | 5 +++--
>  t/t9802-git-p4-filetype.sh | 6 +++---
>  2 files changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/t/lib-git-p4.sh b/t/lib-git-p4.sh
> index 724bc43..7393ee2 100644
> --- a/t/lib-git-p4.sh
> +++ b/t/lib-git-p4.sh
> @@ -198,9 +198,10 @@ marshal_dump() {
>  	cat >"$TRASH_DIRECTORY/marshal-dump.py" <<-EOF &&
>  	import marshal
>  	import sys
> +	instream = getattr(sys.stdin, 'buffer', sys.stdin)
>  	for i in range($line):
> -	    d = marshal.load(sys.stdin)
> -	print d['$what']
> +	    d = marshal.load(instream)
> +	print(d[b'$what'].decode('utf-8'))
>  	EOF
>  	"$PYTHON_PATH" "$TRASH_DIRECTORY/marshal-dump.py"
>  }
> diff --git a/t/t9802-git-p4-filetype.sh b/t/t9802-git-p4-filetype.sh
> index 66d3fc9..eb9a8ed 100755
> --- a/t/t9802-git-p4-filetype.sh
> +++ b/t/t9802-git-p4-filetype.sh
> @@ -223,12 +223,12 @@ build_gendouble() {
>  	import sys
>  	import struct
>  
> -	s = struct.pack(">LL18s",
> +	s = struct.pack(b">LL18s",
>  			0x00051607,  # AppleDouble
>  			0x00020000,  # version 2
> -			""           # pad to 26 bytes
> +			b""          # pad to 26 bytes
>  	)
> -	sys.stdout.write(s)
> +	getattr(sys.stdout, 'buffer', sys.stdout).write(s)
>  	EOF
>  }