From: Eric Wong <e@80x24.org>
To: Brian Henderson <henderson.bj@gmail.com>
Cc: git@vger.kernel.org, peff@peff.net
Subject: Re: [PATCH 1/3] diff-highlight: add some tests.
Date: Wed, 10 Aug 2016 08:56:35 +0000 [thread overview]
Message-ID: <20160810085635.GA1672@starla> (raw)
In-Reply-To: <20160730151149.15980-2-henderson.bj@gmail.com>
Brian Henderson <henderson.bj@gmail.com> wrote:
Hi Brian,
A few minor portability/style nits below, but contrib/ probably
(still?) has laxer rules than the rest of git...
I think we still require Signed-off-by lines in contrib,
though...
> +++ b/contrib/diff-highlight/t/Makefile
> @@ -0,0 +1,19 @@
> +-include ../../../config.mak.autogen
> +-include ../../../config.mak
> +
> +T = $(wildcard t[0-9][0-9][0-9][0-9]-*.sh)
> +
> +all: test
> +test: $(T)
> +
> +.PHONY: help clean all test $(T)
> +
> +help:
> + @echo 'Run "$(MAKE) test" to launch test scripts'
> + @echo 'Run "$(MAKE) clean" to remove trash folders'
> +
> +$(T):
> + @echo "*** $@ ***"; sh $@ $(GIT_TEST_OPTS)
Probably:
@echo "*** $@ ***"; '$(SHELL_PATH_SQ)' $@ $(GIT_TEST_OPTS)
like we do in t/Makefile in case we need to override 'sh'.
> +
> +clean:
> + $(RM) -r 'trash directory'.*
> diff --git a/contrib/diff-highlight/t/t9400-diff-highlight.sh b/contrib/diff-highlight/t/t9400-diff-highlight.sh
> new file mode 100644
> index 0000000..ca7605f
> --- /dev/null
> +++ b/contrib/diff-highlight/t/t9400-diff-highlight.sh
> @@ -0,0 +1,63 @@
> +#!/bin/sh
> +#
> +# Copyright (C) 2016
IANAL, but I think your name (or who you represent) needs to be
in the copyright.
> +
> +test_description='Test diff-highlight'
> +
> +. ./test-diff-highlight.sh
> +. $TEST_DIRECTORY/test-lib.sh
TEST_DIRECTORY ought to be quoted since it could contain
shell-unfriendly chars (we intentionally name 'trash directory'
this way to trigger errors).
> +
> +# PERL is required, but assumed to be present, although not necessarily modern
> +# some tests require 5.8
> +
> +test_expect_success 'diff-highlight highlightes the beginning of a line' '
You can declare a prereq for PERL::
test_expect_success PERL 'name' 'true'
And spelling: "highlights" (there's other instances of this, too)
> + dh_test \
> + "aaa\nbbb\nccc\n" \
> + "aaa\n0bb\nccc\n" \
> +"
We use tabs for shell indentation.
<snip>
> diff --git a/contrib/diff-highlight/t/test-diff-highlight.sh b/contrib/diff-highlight/t/test-diff-highlight.sh
> new file mode 100644
> index 0000000..9b26271
> --- /dev/null
> +++ b/contrib/diff-highlight/t/test-diff-highlight.sh
> @@ -0,0 +1,69 @@
> +#!/bin/sh
> +#
> +# Copyright (C) 2016
> +
> +CURR_DIR=$(pwd)
> +TEST_OUTPUT_DIRECTORY=$(pwd)
> +TEST_DIRECTORY="$CURR_DIR"/../../../t
> +cmd=diff-highlight
> +CMD="$CURR_DIR"/../$cmd
Same comments as above on quoting pathnames and empty copyright.
> +
> +CW="\033[7m"
> +CR="\033[27m"
> +
> +export TEST_OUTPUT_DIRECTORY TEST_DIRECTORY CW CR
> +
> +dh_test() {
> + dh_diff_test "$@"
> + dh_commit_test "$@"
> +}
> +
> +dh_diff_test() {
> + local a="$1" b="$2"
"local" is not a portable construct. It's common for
Debian/Ubuntu systems to use dash as /bin/sh instead of bash;
(dash is faster, and mostly sticks to POSIX)
The "devscripts" package in Debian/Ubuntu-based systems has a
handy "checkbashisms" tool for checking portability of shell
scripts.
> +
> + printf "$a" > file
> + git add file
> +
> + printf "$b" > file
> +
> + git diff file > diff.raw
Commands should be '&&'-chained here since any of them could fail
("git add"/printf/etc could run out of space or fail on disk errors)
Also, our redirect style is: command >file
without a space between '>' and destination.
See Documentation/CodingGuidelines for more details.
Unfortunately, the reasoning is not explained for '>NOSPACE'
and I'm not sure exactly why, either...
> + if test "$#" = 3
Better to use -eq for numeric comparisons: test $# -eq 3
Quoting $# doesn't seem necessary unless your shell is
hopelessly buggy :)
> + then
> + # remove last newline
> + head -n5 diff.raw | head -c -1 > diff.act
"head -c" isn't portable, fortunately Jeff hoisted it out for
use as test_copy_bytes in commit 48860819e8026
https://public-inbox.org/git/20160630090753.GA17463@sigill.intra.peff.net/
> + printf "$3" >> diff.act
> + else
> + cat diff.raw > diff.act
> + fi
> +
> + < diff.raw $CMD > diff.exp
$CMD probably needs to be quoted. However, by the time I got
here I had to ask myself: What is $CMD again?
A: Oh, look up at the top!
*shrug* My attention span is tiny and my fonts are gigantic.
Perhaps using:
DIFF_HIGHLIGHT="$CURR_DIR"/../diff-highlight
Would be more-readable?
> +
> + diff diff.exp diff.act
Maybe use test_cmp to avoid depending external diff.
(or "git diff -b --no-index" in your later test)
Same comments for the rest of the series, I think.
Typically, we expect a reroll in a few days, and I guess there's
no rush (so you can squash your comment patch in addressing
Junio's concern into 3/3).
Thanks.
next prev parent reply other threads:[~2016-08-10 20:18 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-30 15:11 [PATCH 0/3] diff-highlight: add support for git log --graph output Brian Henderson
2016-07-30 15:11 ` [PATCH 1/3] diff-highlight: add some tests Brian Henderson
2016-08-10 8:56 ` Eric Wong [this message]
2016-08-15 16:20 ` Brian Henderson
2016-08-15 16:25 ` Junio C Hamano
2016-08-17 15:31 ` [PATCH v2 0/3] diff-highlight: add support for git log --graph output Brian Henderson
2016-08-19 21:19 ` Eric Wong
2016-08-19 21:23 ` Jeff King
2016-08-17 15:31 ` [PATCH v2 1/3] diff-highlight: add some tests Brian Henderson
2016-08-17 19:09 ` Junio C Hamano
2016-08-19 14:42 ` Brian Henderson
2016-08-19 14:51 ` Jeff King
2016-08-19 15:13 ` Brian Henderson
2016-08-19 17:08 ` [PATCH v3 0/3] diff-highlight: add support for git log --graph output Brian Henderson
2016-08-19 17:08 ` [PATCH v3 1/3] diff-highlight: add some tests Brian Henderson
2016-08-19 18:10 ` Junio C Hamano
2016-08-19 19:30 ` Brian Henderson
2016-08-19 20:56 ` Eric Wong
2016-08-19 20:18 ` [PATCH] " Brian Henderson
2016-08-19 20:44 ` Junio C Hamano
2016-08-19 21:04 ` Jeff King
2016-08-19 22:31 ` Junio C Hamano
2016-08-22 15:55 ` Brian Henderson
2016-08-23 4:12 ` Jeff King
2016-08-29 17:33 ` [PATCH v4 0/3] diff-highlight: add support for --graph option Brian Henderson
2016-08-29 17:33 ` [PATCH v4 1/3] diff-highlight: add some tests Brian Henderson
2016-08-29 17:33 ` [PATCH v4 2/3] diff-highlight: add failing test for handling --graph output Brian Henderson
2016-08-29 17:33 ` [PATCH v4 3/3] diff-highlight: add support for " Brian Henderson
2016-08-29 21:37 ` [PATCH v4 0/3] diff-highlight: add support for --graph option Junio C Hamano
2016-08-30 14:07 ` Brian Henderson
2016-08-30 14:07 ` [PATCH v4 1/3] diff-highlight: add some tests Brian Henderson
2016-08-30 14:07 ` [PATCH v4 2/3] diff-highlight: add failing test for handling --graph output Brian Henderson
2016-08-30 14:07 ` [PATCH v4 3/3] diff-highlight: add support for " Brian Henderson
2016-08-31 5:02 ` [PATCH v4 0/3] diff-highlight: add support for --graph option Jeff King
2016-08-31 5:02 ` [PATCH 1/3] diff-highlight: ignore test cruft Jeff King
2016-08-31 5:03 ` [PATCH 2/3] diff-highlight: add multi-byte tests Jeff King
2016-08-31 5:05 ` [PATCH 3/3] diff-highlight: avoid highlighting combined diffs Jeff King
2016-08-30 8:11 ` [PATCH v4 0/3] diff-highlight: add support for --graph option Jeff King
2016-08-19 21:05 ` [PATCH] diff-highlight: add some tests Junio C Hamano
2016-08-19 17:08 ` [PATCH v3 2/3] diff-highlight: add failing test for handling --graph output Brian Henderson
2016-08-19 18:25 ` Junio C Hamano
2016-08-19 17:08 ` [PATCH v3 3/3] diff-highlight: add support for " Brian Henderson
2016-08-19 18:27 ` Junio C Hamano
2016-08-17 15:31 ` [PATCH v2 2/3] diff-highlight: add failing test for handling " Brian Henderson
2016-08-17 19:18 ` Junio C Hamano
2016-08-17 15:31 ` [PATCH v2 3/3] diff-highlight: add support for " Brian Henderson
2016-08-19 14:37 ` Jeff King
2016-08-15 16:40 ` [PATCH 1/3] diff-highlight: add some tests Lars Schneider
2016-08-16 20:48 ` Junio C Hamano
2016-08-24 9:38 ` Lars Schneider
2016-07-30 15:11 ` [PATCH 2/3] diff-highlight: add failing test for handling --graph output Brian Henderson
2016-07-30 15:11 ` [PATCH 3/3] diff-highlight: add support for " Brian Henderson
2016-08-01 17:16 ` Junio C Hamano
2016-08-04 15:02 ` [PATCH] diff-highlight: Add comment for our assumption about " Brian Henderson
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