git/t/t8014-blame-ignore-fuzzy.sh
Eric Sunshine 0c51d6b4ae t6000-t9999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00

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#!/bin/sh
test_description='git blame ignore fuzzy heuristic'
. ./test-lib.sh
pick_author='s/^[0-9a-f^]* *(\([^ ]*\) .*/\1/'
# Each test is composed of 4 variables:
# titleN - the test name
# aN - the initial content
# bN - the final content
# expectedN - the line numbers from aN that we expect git blame
# on bN to identify, or "Final" if bN itself should
# be identified as the origin of that line.
# We start at test 2 because setup will show as test 1
title2="Regression test for partially overlapping search ranges"
cat <<EOF >a2
1
2
3
abcdef
5
6
7
ijkl
9
10
11
pqrs
13
14
15
wxyz
17
18
19
EOF
cat <<EOF >b2
abcde
ijk
pqr
wxy
EOF
cat <<EOF >expected2
4
8
12
16
EOF
title3="Combine 3 lines into 2"
cat <<EOF >a3
if ((maxgrow==0) ||
( single_line_field && (field->dcols < maxgrow)) ||
(!single_line_field && (field->drows < maxgrow)))
EOF
cat <<EOF >b3
if ((maxgrow == 0) || (single_line_field && (field->dcols < maxgrow)) ||
(!single_line_field && (field->drows < maxgrow))) {
EOF
cat <<EOF >expected3
2
3
EOF
title4="Add curly brackets"
cat <<EOF >a4
if (rows) *rows = field->rows;
if (cols) *cols = field->cols;
if (frow) *frow = field->frow;
if (fcol) *fcol = field->fcol;
EOF
cat <<EOF >b4
if (rows) {
*rows = field->rows;
}
if (cols) {
*cols = field->cols;
}
if (frow) {
*frow = field->frow;
}
if (fcol) {
*fcol = field->fcol;
}
EOF
cat <<EOF >expected4
1
1
Final
2
2
Final
3
3
Final
4
4
Final
EOF
title5="Combine many lines and change case"
cat <<EOF >a5
for(row=0,pBuffer=field->buf;
row<height;
row++,pBuffer+=width )
{
if ((len = (int)( After_End_Of_Data( pBuffer, width ) - pBuffer )) > 0)
{
wmove( win, row, 0 );
waddnstr( win, pBuffer, len );
EOF
cat <<EOF >b5
for (Row = 0, PBuffer = field->buf; Row < Height; Row++, PBuffer += Width) {
if ((Len = (int)(afterEndOfData(PBuffer, Width) - PBuffer)) > 0) {
wmove(win, Row, 0);
waddnstr(win, PBuffer, Len);
EOF
cat <<EOF >expected5
1
5
7
8
EOF
title6="Rename and combine lines"
cat <<EOF >a6
bool need_visual_update = ((form != (FORM *)0) &&
(form->status & _POSTED) &&
(form->current==field));
if (need_visual_update)
Synchronize_Buffer(form);
if (single_line_field)
{
growth = field->cols * amount;
if (field->maxgrow)
growth = Minimum(field->maxgrow - field->dcols,growth);
field->dcols += growth;
if (field->dcols == field->maxgrow)
EOF
cat <<EOF >b6
bool NeedVisualUpdate = ((Form != (FORM *)0) && (Form->status & _POSTED) &&
(Form->current == field));
if (NeedVisualUpdate) {
synchronizeBuffer(Form);
}
if (SingleLineField) {
Growth = field->cols * amount;
if (field->maxgrow) {
Growth = Minimum(field->maxgrow - field->dcols, Growth);
}
field->dcols += Growth;
if (field->dcols == field->maxgrow) {
EOF
cat <<EOF >expected6
1
3
4
5
6
Final
7
8
10
11
12
Final
13
14
EOF
# Both lines match identically so position must be used to tie-break.
title7="Same line twice"
cat <<EOF >a7
abc
abc
EOF
cat <<EOF >b7
abcd
abcd
EOF
cat <<EOF >expected7
1
2
EOF
title8="Enforce line order"
cat <<EOF >a8
abcdef
ghijkl
ab
EOF
cat <<EOF >b8
ghijk
abcd
EOF
cat <<EOF >expected8
2
3
EOF
title9="Expand lines and rename variables"
cat <<EOF >a9
int myFunction(int ArgumentOne, Thing *ArgTwo, Blah XuglyBug) {
Squiggle FabulousResult = squargle(ArgumentOne, *ArgTwo,
XuglyBug) + EwwwGlobalWithAReallyLongNameYepTooLong;
return FabulousResult * 42;
}
EOF
cat <<EOF >b9
int myFunction(int argument_one, Thing *arg_asdfgh,
Blah xugly_bug) {
Squiggle fabulous_result = squargle(argument_one,
*arg_asdfgh, xugly_bug)
+ g_ewww_global_with_a_really_long_name_yep_too_long;
return fabulous_result * 42;
}
EOF
cat <<EOF >expected9
1
1
2
3
3
4
5
EOF
title10="Two close matches versus one less close match"
cat <<EOF >a10
abcdef
abcdef
ghijkl
EOF
cat <<EOF >b10
gh
abcdefx
EOF
cat <<EOF >expected10
Final
2
EOF
# The first line of b matches best with the last line of a, but the overall
# match is better if we match it with the first line of a.
title11="Piggy in the middle"
cat <<EOF >a11
abcdefg
ijklmn
abcdefgh
EOF
cat <<EOF >b11
abcdefghx
ijklm
EOF
cat <<EOF >expected11
1
2
EOF
title12="No trailing newline"
printf "abc\ndef" >a12
printf "abx\nstu" >b12
cat <<EOF >expected12
1
Final
EOF
title13="Reorder includes"
cat <<EOF >a13
#include "c.h"
#include "b.h"
#include "a.h"
#include "e.h"
#include "d.h"
EOF
cat <<EOF >b13
#include "a.h"
#include "b.h"
#include "c.h"
#include "d.h"
#include "e.h"
EOF
cat <<EOF >expected13
3
2
1
5
4
EOF
last_test=13
test_expect_success setup '
for i in $(test_seq 2 $last_test)
do
# Append each line in a separate commit to make it easy to
# check which original line the blame output relates to.
line_count=0 &&
while IFS= read line
do
line_count=$((line_count+1)) &&
echo "$line" >>"$i" &&
git add "$i" &&
test_tick &&
GIT_AUTHOR_NAME="$line_count" git commit -m "$line_count" || return 1
done <"a$i"
done &&
for i in $(test_seq 2 $last_test)
do
# Overwrite the files with the final content.
cp b$i $i &&
git add $i || return 1
done &&
test_tick &&
# Commit the final content all at once so it can all be
# referred to with the same commit ID.
GIT_AUTHOR_NAME=Final git commit -m Final &&
IGNOREME=$(git rev-parse HEAD)
'
for i in $(test_seq 2 $last_test); do
eval title="\$title$i"
test_expect_success "$title" \
"git blame -M9 --ignore-rev $IGNOREME $i >output &&
sed -e \"$pick_author\" output >actual &&
test_cmp expected$i actual"
done
# This invoked a null pointer dereference when the chunk callback was called
# with a zero length parent chunk and there were no more suspects.
test_expect_success 'Diff chunks with no suspects' '
test_write_lines xy1 A B C xy1 >file &&
git add file &&
test_tick &&
GIT_AUTHOR_NAME=1 git commit -m 1 &&
test_write_lines xy2 A B xy2 C xy2 >file &&
git add file &&
test_tick &&
GIT_AUTHOR_NAME=2 git commit -m 2 &&
REV_2=$(git rev-parse HEAD) &&
test_write_lines xy3 A >file &&
git add file &&
test_tick &&
GIT_AUTHOR_NAME=3 git commit -m 3 &&
REV_3=$(git rev-parse HEAD) &&
test_write_lines 1 1 >expected &&
git blame --ignore-rev $REV_2 --ignore-rev $REV_3 file >output &&
sed -e "$pick_author" output >actual &&
test_cmp expected actual
'
test_expect_success 'position matching' '
test_write_lines abc def >file2 &&
git add file2 &&
test_tick &&
GIT_AUTHOR_NAME=1 git commit -m 1 &&
test_write_lines abc def abc def >file2 &&
git add file2 &&
test_tick &&
GIT_AUTHOR_NAME=2 git commit -m 2 &&
test_write_lines abcx defx abcx defx >file2 &&
git add file2 &&
test_tick &&
GIT_AUTHOR_NAME=3 git commit -m 3 &&
REV_3=$(git rev-parse HEAD) &&
test_write_lines abcy defy abcx defx >file2 &&
git add file2 &&
test_tick &&
GIT_AUTHOR_NAME=4 git commit -m 4 &&
REV_4=$(git rev-parse HEAD) &&
test_write_lines 1 1 2 2 >expected &&
git blame --ignore-rev $REV_3 --ignore-rev $REV_4 file2 >output &&
sed -e "$pick_author" output >actual &&
test_cmp expected actual
'
# This fails if each blame entry is processed independently instead of
# processing each diff change in full.
test_expect_success 'preserve order' '
test_write_lines bcde >file3 &&
git add file3 &&
test_tick &&
GIT_AUTHOR_NAME=1 git commit -m 1 &&
test_write_lines bcde fghij >file3 &&
git add file3 &&
test_tick &&
GIT_AUTHOR_NAME=2 git commit -m 2 &&
test_write_lines bcde fghij abcd >file3 &&
git add file3 &&
test_tick &&
GIT_AUTHOR_NAME=3 git commit -m 3 &&
test_write_lines abcdx fghijx bcdex >file3 &&
git add file3 &&
test_tick &&
GIT_AUTHOR_NAME=4 git commit -m 4 &&
REV_4=$(git rev-parse HEAD) &&
test_write_lines abcdx fghijy bcdex >file3 &&
git add file3 &&
test_tick &&
GIT_AUTHOR_NAME=5 git commit -m 5 &&
REV_5=$(git rev-parse HEAD) &&
test_write_lines 1 2 3 >expected &&
git blame --ignore-rev $REV_4 --ignore-rev $REV_5 file3 >output &&
sed -e "$pick_author" output >actual &&
test_cmp expected actual
'
test_done