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git/t/t4204-patch-id.sh
Junio C Hamano 5c63920190 t4204: do not let $name variable clobbered
test_patch_id_file_order shell function uses $name variable to hold
one filename, and calls another shell function calc_patch_id as a
downstream of one pipeline.  The called function, however, also uses
the same $name variable.  With a shell implementation that runs the
callee in the current shell environment, the caller's $name would
be clobbered by the callee's use of the same variable.

This hasn't been an issue with dash and bash.  ksh93 reveals the
breakage in the test script.

Fix it by using a distinct variable name in the callee.

Reported-by: Armin Kunaschik <megabreit@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-24 15:49:02 -07:00

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#!/bin/sh
test_description='git patch-id'
. ./test-lib.sh
test_expect_success 'setup' '
as="a a a a a a a a" && # eight a
test_write_lines $as >foo &&
test_write_lines $as >bar &&
git add foo bar &&
git commit -a -m initial &&
test_write_lines $as b >foo &&
test_write_lines $as b >bar &&
git commit -a -m first &&
git checkout -b same master &&
git commit --amend -m same-msg &&
git checkout -b notsame master &&
echo c >foo &&
echo c >bar &&
git commit --amend -a -m notsame-msg &&
test_write_lines bar foo >bar-then-foo &&
test_write_lines foo bar >foo-then-bar
'
test_expect_success 'patch-id output is well-formed' '
git log -p -1 | git patch-id >output &&
grep "^[a-f0-9]\{40\} $(git rev-parse HEAD)$" output
'
#calculate patch id. Make sure output is not empty.
calc_patch_id () {
patch_name="$1"
shift
git patch-id "$@" |
sed "s/ .*//" >patch-id_"$patch_name" &&
test_line_count -gt 0 patch-id_"$patch_name"
}
get_top_diff () {
git log -p -1 "$@" -O bar-then-foo --
}
get_patch_id () {
get_top_diff "$1" | calc_patch_id "$@"
}
test_expect_success 'patch-id detects equality' '
get_patch_id master &&
get_patch_id same &&
test_cmp patch-id_master patch-id_same
'
test_expect_success 'patch-id detects inequality' '
get_patch_id master &&
get_patch_id notsame &&
! test_cmp patch-id_master patch-id_notsame
'
test_expect_success 'patch-id supports git-format-patch output' '
get_patch_id master &&
git checkout same &&
git format-patch -1 --stdout | calc_patch_id same &&
test_cmp patch-id_master patch-id_same &&
set $(git format-patch -1 --stdout | git patch-id) &&
test "$2" = $(git rev-parse HEAD)
'
test_expect_success 'whitespace is irrelevant in footer' '
get_patch_id master &&
git checkout same &&
git format-patch -1 --stdout | sed "s/ \$//" | calc_patch_id same &&
test_cmp patch-id_master patch-id_same
'
cmp_patch_id () {
if
test "$1" = "relevant"
then
! test_cmp patch-id_"$2" patch-id_"$3"
else
test_cmp patch-id_"$2" patch-id_"$3"
fi
}
test_patch_id_file_order () {
relevant="$1"
shift
name="order-${1}-$relevant"
shift
get_top_diff "master" | calc_patch_id "$name" "$@" &&
git checkout same &&
git format-patch -1 --stdout -O foo-then-bar |
calc_patch_id "ordered-$name" "$@" &&
cmp_patch_id $relevant "$name" "ordered-$name"
}
# combined test for options: add more tests here to make them
# run with all options
test_patch_id () {
test_patch_id_file_order "$@"
}
# small tests with detailed diagnostic for basic options.
test_expect_success 'file order is irrelevant with --stable' '
test_patch_id_file_order irrelevant --stable --stable
'
test_expect_success 'file order is relevant with --unstable' '
test_patch_id_file_order relevant --unstable --unstable
'
#Now test various option combinations.
test_expect_success 'default is unstable' '
test_patch_id relevant default
'
test_expect_success 'patchid.stable = true is stable' '
test_config patchid.stable true &&
test_patch_id irrelevant patchid.stable=true
'
test_expect_success 'patchid.stable = false is unstable' '
test_config patchid.stable false &&
test_patch_id relevant patchid.stable=false
'
test_expect_success '--unstable overrides patchid.stable = true' '
test_config patchid.stable true &&
test_patch_id relevant patchid.stable=true--unstable --unstable
'
test_expect_success '--stable overrides patchid.stable = false' '
test_config patchid.stable false &&
test_patch_id irrelevant patchid.stable=false--stable --stable
'
test_expect_success 'patch-id supports git-format-patch MIME output' '
get_patch_id master &&
git checkout same &&
git format-patch -1 --attach --stdout | calc_patch_id same &&
test_cmp patch-id_master patch-id_same
'
cat >nonl <<\EOF
diff --git i/a w/a
index e69de29..2e65efe 100644
--- i/a
+++ w/a
@@ -0,0 +1 @@
+a
\ No newline at end of file
diff --git i/b w/b
index e69de29..6178079 100644
--- i/b
+++ w/b
@@ -0,0 +1 @@
+b
EOF
cat >withnl <<\EOF
diff --git i/a w/a
index e69de29..7898192 100644
--- i/a
+++ w/a
@@ -0,0 +1 @@
+a
diff --git i/b w/b
index e69de29..6178079 100644
--- i/b
+++ w/b
@@ -0,0 +1 @@
+b
EOF
test_expect_success 'patch-id handles no-nl-at-eof markers' '
cat nonl | calc_patch_id nonl &&
cat withnl | calc_patch_id withnl &&
test_cmp patch-id_nonl patch-id_withnl
'
test_done