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From: Junio C Hamano <gitster@pobox.com>
To: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Cc: git@vger.kernel.org, Stefan Beller <sbeller@google.com>,
	Brandon Williams <bmwill@google.com>, Jeff King <peff@peff.net>,
	Johannes Sixt <j6t@kdbg.org>
Subject: Re: [PATCH v4 6/7] trace.c: print env vars in trace_run_command()
Date: Tue, 16 Jan 2018 14:13:28 -0800	[thread overview]
Message-ID: <xmqqmv1dtptj.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20180113064949.6043-7-pclouds@gmail.com> (=?utf-8?B?Ik5ndXk=?= =?utf-8?B?4buFbiBUaMOhaSBOZ+G7jWM=?= Duy"'s message of "Sat, 13 Jan 2018 13:49:48 +0700")

Nguyễn Thái Ngọc Duy  <pclouds@gmail.com> writes:

> +test_trace() {
> +	local expected="$1"

Style: "test_trace () {" is how we start a shell function.
Portability: we do not use "local".

> +	shift
> +	GIT_TRACE=1 test-run-command "$@" run-command true 2>&1 >/dev/null | \
> +		sed 's/.* run_command: //' >actual &&
> +	echo "$expected true" >expected &&
> +	test_cmp expected actual

Consistency: everybody else in the test script contrasts "actual" vs
"expect" (they happen to be of the same length ;-); don't say
expectED just to be different.

> +}
> +
> +test_expect_success 'GIT_TRACE with environment variables' '
> +	test_trace "abc=1 def=2" env abc=1 env def=2 &&
> +	test_trace "abc=2" env abc env abc=1 env abc=2 &&
> +	test_trace "abc=2" env abc env abc=2 &&
> +	abc=1 test_trace "def=1" env abc=1 env def=1 &&

Portability: "VAR=VAL shell_function args..." does not work
everywhere, unlike "VAR=VAL command args..." that exports the set of
environment variables for just a single shot invocation of the
command.

Running this script with dash fails, even though bash does behave as
you expect.

> +	abc=1 test_trace "def=1" env abc env abc=1 env def=1 &&
> +	test_trace "def=1" env non-exist env def=1 &&
> +	test_trace "abc=2" env abc=1 env abc env abc=2 &&
> +	abc=1 def=2 test_trace "unset abc def;" env abc env def &&
> +	abc=1 def=2 test_trace "unset def; abc=3" env abc env def env abc=3 &&
> +	abc=1 test_trace "unset abc;" env abc=2 env abc
> +'

Taking them together, here is what I'll be queuing on top to make
today's push-out to pass the tests.

Thanks.

diff --git a/t/t0061-run-command.sh b/t/t0061-run-command.sh
index e6208316c3..24c92b6cd7 100755
--- a/t/t0061-run-command.sh
+++ b/t/t0061-run-command.sh
@@ -141,26 +141,41 @@ test_expect_success 'run_command outputs ' '
 	test_cmp expect actual
 '
 
-test_trace() {
-	local expected="$1"
+test_trace () {
+	expect="$1"
 	shift
 	GIT_TRACE=1 test-run-command "$@" run-command true 2>&1 >/dev/null | \
 		sed 's/.* run_command: //' >actual &&
-	echo "$expected true" >expected &&
-	test_cmp expected actual
+	echo "$expect true" >expect &&
+	test_cmp expect actual
 }
 
 test_expect_success 'GIT_TRACE with environment variables' '
 	test_trace "abc=1 def=2" env abc=1 env def=2 &&
 	test_trace "abc=2" env abc env abc=1 env abc=2 &&
 	test_trace "abc=2" env abc env abc=2 &&
-	abc=1 test_trace "def=1" env abc=1 env def=1 &&
-	abc=1 test_trace "def=1" env abc env abc=1 env def=1 &&
+	(
+		abc=1 && export abc &&
+		test_trace "def=1" env abc=1 env def=1
+	) &&
+	(
+		abc=1 && export abc &&
+		test_trace "def=1" env abc env abc=1 env def=1
+	) &&
 	test_trace "def=1" env non-exist env def=1 &&
 	test_trace "abc=2" env abc=1 env abc env abc=2 &&
-	abc=1 def=2 test_trace "unset abc def;" env abc env def &&
-	abc=1 def=2 test_trace "unset def; abc=3" env abc env def env abc=3 &&
-	abc=1 test_trace "unset abc;" env abc=2 env abc
+	(
+		abc=1 def=2 && export abc def &&
+		test_trace "unset abc def;" env abc env def
+	) &&
+	(
+		abc=1 def=2 && export abc def &&
+		test_trace "unset def; abc=3" env abc env def env abc=3
+	) &&
+	(
+		abc=1 && export abc &&
+		test_trace "unset abc;" env abc=2 env abc
+	)
 '
 
 test_done
-- 
2.16.0-rc2-179-g03f5267cd7


  parent reply	other threads:[~2018-01-16 22:13 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-10 10:48 [PATCH] run-command.c: print env vars when GIT_TRACE is set Nguyễn Thái Ngọc Duy
2018-01-10 18:09 ` Brandon Williams
2018-01-10 19:14   ` Stefan Beller
2018-01-10 19:26     ` Brandon Williams
2018-01-10 19:35       ` Stefan Beller
2018-01-11  9:47 ` [PATCH v2] " Nguyễn Thái Ngọc Duy
2018-01-11 11:25   ` Duy Nguyen
2018-01-11 17:53   ` Brandon Williams
2018-01-11 18:20     ` Stefan Beller
2018-01-11 19:27   ` Junio C Hamano
2018-01-12  9:23     ` Duy Nguyen
2018-01-12  9:56   ` [PATCH v3 0/4] " Nguyễn Thái Ngọc Duy
2018-01-12  9:56     ` [PATCH v3 1/4] trace.c: introduce trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-12 13:05       ` Jeff King
2018-01-12 13:11         ` Jeff King
2018-01-12  9:56     ` [PATCH v3 2/4] trace.c: print program 'git' when child_process.git_cmd is set Nguyễn Thái Ngọc Duy
2018-01-12 13:05       ` Jeff King
2018-01-12  9:56     ` [PATCH v3 3/4] trace.c: print env vars in trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-12 13:13       ` Jeff King
2018-01-12  9:56     ` [PATCH v3 4/4] trace.c: be smart about what env to print " Nguyễn Thái Ngọc Duy
2018-01-12 13:33       ` Jeff King
2018-01-12 18:24         ` Junio C Hamano
2018-01-12 18:45           ` Jeff King
2018-01-12 19:19             ` Junio C Hamano
2018-01-12 19:23               ` Jeff King
2018-01-12 20:28                 ` Brandon Williams
2018-01-12 22:54         ` Junio C Hamano
2018-01-13  4:54           ` Duy Nguyen
2018-01-13  6:47             ` Duy Nguyen
2018-01-12 13:36     ` [PATCH v3 0/4] run-command.c: print env vars when GIT_TRACE is set Jeff King
2018-01-12 13:38       ` [PATCH 5/4] sq_quote_argv: drop maxlen parameter Jeff King
2018-01-12 23:20         ` Junio C Hamano
2018-01-12 13:39       ` [PATCH 6/4] trace: avoid unnecessary quoting Jeff King
2018-01-12 18:06       ` [PATCH v3 0/4] run-command.c: print env vars when GIT_TRACE is set Stefan Beller
2018-01-12 17:19     ` Stefan Beller
2018-01-13  6:54       ` Duy Nguyen
2018-01-13  6:49     ` [PATCH v4 0/7] Trace env variables in run_command() Nguyễn Thái Ngọc Duy
2018-01-13  6:49       ` [PATCH v4 1/7] sq_quote_argv: drop maxlen parameter Nguyễn Thái Ngọc Duy
2018-01-13  6:49       ` [PATCH v4 2/7] trace: avoid unnecessary quoting Nguyễn Thái Ngọc Duy
2018-01-13  6:49       ` [PATCH v4 3/7] trace.c: move strbuf_release() out of print_trace_line() Nguyễn Thái Ngọc Duy
2018-01-13  7:14         ` Jeff King
2018-01-13  6:49       ` [PATCH v4 4/7] trace.c: introduce trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-13  6:49       ` [PATCH v4 5/7] trace.c: print program 'git' when child_process.git_cmd is set Nguyễn Thái Ngọc Duy
2018-01-13  6:49       ` [PATCH v4 6/7] trace.c: print env vars in trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-13  7:25         ` Jeff King
2018-01-16 22:13         ` Junio C Hamano [this message]
2018-01-16 22:20           ` Stefan Beller
2018-01-17  1:32             ` Junio C Hamano
2018-01-13  6:49       ` [PATCH v4 7/7] trace.c: print new cwd " Nguyễn Thái Ngọc Duy
2018-01-13  7:26       ` [PATCH v4 0/7] Trace env variables in run_command() Jeff King
2018-01-15 10:59       ` [PATCH v5 " Nguyễn Thái Ngọc Duy
2018-01-15 10:59         ` [PATCH v5 1/7] sq_quote_argv: drop maxlen parameter Nguyễn Thái Ngọc Duy
2018-01-15 10:59         ` [PATCH v5 2/7] trace: avoid unnecessary quoting Nguyễn Thái Ngọc Duy
2018-01-15 10:59         ` [PATCH v5 3/7] trace.c: move strbuf_release() out of print_trace_line() Nguyễn Thái Ngọc Duy
2018-01-16 18:24           ` Brandon Williams
2018-01-15 10:59         ` [PATCH v5 4/7] trace.c: introduce trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-17 22:21           ` Jeff King
2018-01-17 22:41             ` Junio C Hamano
2018-01-15 10:59         ` [PATCH v5 5/7] trace.c: print program 'git' when child_process.git_cmd is set Nguyễn Thái Ngọc Duy
2018-01-15 10:59         ` [PATCH v5 6/7] trace.c: print env vars in trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-16 18:32           ` Brandon Williams
2018-01-15 10:59         ` [PATCH v5 7/7] trace.c: print new cwd " Nguyễn Thái Ngọc Duy
2018-01-18  9:45         ` [PATCH v6 0/7] Trace env variables in run_command() Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 1/7] sq_quote_argv: drop maxlen parameter Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 2/7] trace: avoid unnecessary quoting Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 3/7] trace.c: move strbuf_release() out of print_trace_line() Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 4/7] run-command.c: introduce trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 5/7] run-command.c: print program 'git' when tracing git_cmd mode Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 6/7] run-command.c: print env vars in trace_run_command() Nguyễn Thái Ngọc Duy
2018-01-18  9:45           ` [PATCH v6 7/7] run-command.c: print new cwd " Nguyễn Thái Ngọc Duy
2018-01-19 21:39           ` [PATCH v6 0/7] Trace env variables in run_command() Jeff King
2018-01-11 10:07 ` [PATCH] run-command.c: print env vars when GIT_TRACE is set Jeff King
2018-01-11 11:13   ` Duy Nguyen
2018-01-11 18:21   ` Johannes Sixt

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