Đoàn Trần Công Danh wrote:
> In Git project,
In _the_ Git project
> we have multiple occasions that requires checking number
multiple instances that require checking the number
> of lines of text in stdout and/or stderr of a command. One of such
> example is t6400,
One of such examples
> which checks number of files in various states.
that checks the number of files (see 'that' vs. 'which' [1]).
> Some of those commands are Git command,
are git commands,
> and we would like to check their
> exit status. In some of those checks, we pipe the stdout of those
> commands to "wc -l" to check for line count,
for a line count,
> thus loosing the exit status.
losing
> Introduce a helper function to check for number of lines in stdout and
the number of lines
> stderr from those commands.
>
> This helper will create 2 temporary files in process,
the process
> thus it may affect output of some checks.
the output
> Signed-off-by: Đoàn Trần Công Danh <congdanhqx@xxxxxxxxx>
> ---
> t/test-lib-functions.sh | 117 ++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 117 insertions(+)
>
> diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
> index f0448daa74..b3281409de 100644
> --- a/t/test-lib-functions.sh
> +++ b/t/test-lib-functions.sh
> @@ -845,6 +845,123 @@ test_line_count () {
> fi
> }
>
> +# test_line_count_cmd checks exit status,
the exit status
> and the number of lines in
> +# captured stdout and/or stderr of a command.
the captured stdout...
> +#
> +# Usage:
> +#
> +# test_line_count_cmd [--[out|err] <binop> <value>]... [--] [!] cmd [args...]
> +#
> +# Options:
> +# --out <binop> <value>:
> +# --err <binop> <value>:
> +# Run sh's "test <# of lines> <binop> <value>" on # of lines in stdout
> +# (for --out) or stderr (for --err)
> +# !:
> +# Instead of expecting "cmd [args...]" succeed, expect its failure.
> +# Note, if command under testing is "git",
the command under...
> test_must_fail should be used
> +# instead of "!".
> +#
> +# Example:
> +# test_line_count_cmd --out -ge 10 --err = 0 git tag --no-contains v1.0.0
> +# test_line_count_cmd --out -le 10 ! grep some-text a-file
> +# test_line_count_cmd --out = 0 test_must_fail git rev-parse --verify abcd1234
> +#
> +# NOTE:
> +# * if "--out" is specified, a temporary file named test_line_count_cmd_.out
> +# will be created.
> +# * if "--err" is specified, a temporary file named test_line_count_cmd_.err
> +# will be created.
> +# Those temporary files will be created under $TRASH_DIRECTORY/.git/trash
> +# if $TRASH_DIRECTORY/.git directory existed.
if $TRASH_DIRECTORY/.git/ exists
> +# Otherwise, they will be created in $TRASH_DIRECTORY.
> +# Those temporary files will be cleant by test_when_finished
will be cleaned by ...
Cheers.
[1] https://www.merriam-webster.com/words-at-play/when-to-use-that-and-which
--
Felipe Contreras
