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Add several testcases for --dirstat and friends 

Currently, t4013 is the only selftest that exercises the --dirstat machinery,
but it only does a superficial verification of --dirstat's output.

This patch adds a new selftest - t4047-diff-dirstat.sh - which prepares a
commit containing:
 - unchanged files, changed files and files with rearranged lines
 - copied files, moved files, and unmoved files

It then verifies the correct dirstat output for that commit in the following
dirstat modes:
 - --dirstat
 - -X
 - --dirstat=0
 - -X0
 - --cumulative
 - --dirstat-by-file
 - (plus combinations of the above)

Each of the above tests are also run with:
 - no rename detection
 - rename detection (-M)
 - expensive copy detection (-C -C)

Improved-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Johan Herland 14 years ago committed by Junio C Hamano
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      t/t4047-diff-dirstat.sh

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t/t4047-diff-dirstat.sh
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#!/bin/sh

test_description='diff --dirstat tests'
. ./test-lib.sh

# set up two commits where the second commit has these files
# (10 lines in each file):
#
# unchanged/text (unchanged from 1st commit)
# changed/text (changed 1st line)
# rearranged/text (swapped 1st and 2nd line)
# dst/copy/unchanged/text (copied from src/copy/unchanged/text, unchanged)
# dst/copy/changed/text (copied from src/copy/changed/text, changed)
# dst/copy/rearranged/text (copied from src/copy/rearranged/text, rearranged)
# dst/move/unchanged/text (moved from src/move/unchanged/text, unchanged)
# dst/move/changed/text (moved from src/move/changed/text, changed)
# dst/move/rearranged/text (moved from src/move/rearranged/text, rearranged)

test_expect_success 'setup' '
mkdir unchanged &&
mkdir changed &&
mkdir rearranged &&
mkdir src &&
mkdir src/copy &&
mkdir src/copy/unchanged &&
mkdir src/copy/changed &&
mkdir src/copy/rearranged &&
mkdir src/move &&
mkdir src/move/unchanged &&
mkdir src/move/changed &&
mkdir src/move/rearranged &&
cat <<EOF >unchanged/text &&
unchanged line #0
unchanged line #1
unchanged line #2
unchanged line #3
unchanged line #4
unchanged line #5
unchanged line #6
unchanged line #7
unchanged line #8
unchanged line #9
EOF
cat <<EOF >changed/text &&
changed line #0
changed line #1
changed line #2
changed line #3
changed line #4
changed line #5
changed line #6
changed line #7
changed line #8
changed line #9
EOF
cat <<EOF >rearranged/text &&
rearranged line #0
rearranged line #1
rearranged line #2
rearranged line #3
rearranged line #4
rearranged line #5
rearranged line #6
rearranged line #7
rearranged line #8
rearranged line #9
EOF
cat <<EOF >src/copy/unchanged/text &&
copy unchanged line #0
copy unchanged line #1
copy unchanged line #2
copy unchanged line #3
copy unchanged line #4
copy unchanged line #5
copy unchanged line #6
copy unchanged line #7
copy unchanged line #8
copy unchanged line #9
EOF
cat <<EOF >src/copy/changed/text &&
copy changed line #0
copy changed line #1
copy changed line #2
copy changed line #3
copy changed line #4
copy changed line #5
copy changed line #6
copy changed line #7
copy changed line #8
copy changed line #9
EOF
cat <<EOF >src/copy/rearranged/text &&
copy rearranged line #0
copy rearranged line #1
copy rearranged line #2
copy rearranged line #3
copy rearranged line #4
copy rearranged line #5
copy rearranged line #6
copy rearranged line #7
copy rearranged line #8
copy rearranged line #9
EOF
cat <<EOF >src/move/unchanged/text &&
move unchanged line #0
move unchanged line #1
move unchanged line #2
move unchanged line #3
move unchanged line #4
move unchanged line #5
move unchanged line #6
move unchanged line #7
move unchanged line #8
move unchanged line #9
EOF
cat <<EOF >src/move/changed/text &&
move changed line #0
move changed line #1
move changed line #2
move changed line #3
move changed line #4
move changed line #5
move changed line #6
move changed line #7
move changed line #8
move changed line #9
EOF
cat <<EOF >src/move/rearranged/text &&
move rearranged line #0
move rearranged line #1
move rearranged line #2
move rearranged line #3
move rearranged line #4
move rearranged line #5
move rearranged line #6
move rearranged line #7
move rearranged line #8
move rearranged line #9
EOF
git add . &&
git commit -m "initial" &&
mkdir dst &&
mkdir dst/copy &&
mkdir dst/copy/unchanged &&
mkdir dst/copy/changed &&
mkdir dst/copy/rearranged &&
mkdir dst/move &&
mkdir dst/move/unchanged &&
mkdir dst/move/changed &&
mkdir dst/move/rearranged &&
cat <<EOF >changed/text &&
CHANGED XXXXXXX line #0
changed line #1
changed line #2
changed line #3
changed line #4
changed line #5
changed line #6
changed line #7
changed line #8
changed line #9
EOF
cat <<EOF >rearranged/text &&
rearranged line #1
rearranged line #0
rearranged line #2
rearranged line #3
rearranged line #4
rearranged line #5
rearranged line #6
rearranged line #7
rearranged line #8
rearranged line #9
EOF
cat <<EOF >dst/copy/unchanged/text &&
copy unchanged line #0
copy unchanged line #1
copy unchanged line #2
copy unchanged line #3
copy unchanged line #4
copy unchanged line #5
copy unchanged line #6
copy unchanged line #7
copy unchanged line #8
copy unchanged line #9
EOF
cat <<EOF >dst/copy/changed/text &&
copy XXXCHANGED line #0
copy changed line #1
copy changed line #2
copy changed line #3
copy changed line #4
copy changed line #5
copy changed line #6
copy changed line #7
copy changed line #8
copy changed line #9
EOF
cat <<EOF >dst/copy/rearranged/text &&
copy rearranged line #1
copy rearranged line #0
copy rearranged line #2
copy rearranged line #3
copy rearranged line #4
copy rearranged line #5
copy rearranged line #6
copy rearranged line #7
copy rearranged line #8
copy rearranged line #9
EOF
cat <<EOF >dst/move/unchanged/text &&
move unchanged line #0
move unchanged line #1
move unchanged line #2
move unchanged line #3
move unchanged line #4
move unchanged line #5
move unchanged line #6
move unchanged line #7
move unchanged line #8
move unchanged line #9
EOF
cat <<EOF >dst/move/changed/text &&
move XXXCHANGED line #0
move changed line #1
move changed line #2
move changed line #3
move changed line #4
move changed line #5
move changed line #6
move changed line #7
move changed line #8
move changed line #9
EOF
cat <<EOF >dst/move/rearranged/text &&
move rearranged line #1
move rearranged line #0
move rearranged line #2
move rearranged line #3
move rearranged line #4
move rearranged line #5
move rearranged line #6
move rearranged line #7
move rearranged line #8
move rearranged line #9
EOF
git add . &&
git rm -r src/move/unchanged &&
git rm -r src/move/changed &&
git rm -r src/move/rearranged &&
git commit -m "changes"
'

cat <<EOF >expect_diff_stat
changed/text | 2 +-
dst/copy/changed/text | 10 ++++++++++
dst/copy/rearranged/text | 10 ++++++++++
dst/copy/unchanged/text | 10 ++++++++++
dst/move/changed/text | 10 ++++++++++
dst/move/rearranged/text | 10 ++++++++++
dst/move/unchanged/text | 10 ++++++++++
rearranged/text | 2 +-
src/move/changed/text | 10 ----------
src/move/rearranged/text | 10 ----------
src/move/unchanged/text | 10 ----------
11 files changed, 62 insertions(+), 32 deletions(-)
EOF

cat <<EOF >expect_diff_stat_M
changed/text | 2 +-
dst/copy/changed/text | 10 ++++++++++
dst/copy/rearranged/text | 10 ++++++++++
dst/copy/unchanged/text | 10 ++++++++++
{src => dst}/move/changed/text | 2 +-
{src => dst}/move/rearranged/text | 2 +-
{src => dst}/move/unchanged/text | 0
rearranged/text | 2 +-
8 files changed, 34 insertions(+), 4 deletions(-)
EOF

cat <<EOF >expect_diff_stat_CC
changed/text | 2 +-
{src => dst}/copy/changed/text | 2 +-
{src => dst}/copy/rearranged/text | 2 +-
{src => dst}/copy/unchanged/text | 0
{src => dst}/move/changed/text | 2 +-
{src => dst}/move/rearranged/text | 2 +-
{src => dst}/move/unchanged/text | 0
rearranged/text | 2 +-
8 files changed, 6 insertions(+), 6 deletions(-)
EOF

test_expect_success 'sanity check setup (--stat)' '
git diff --stat HEAD^..HEAD >actual_diff_stat &&
test_cmp expect_diff_stat actual_diff_stat &&
git diff --stat -M HEAD^..HEAD >actual_diff_stat_M &&
test_cmp expect_diff_stat_M actual_diff_stat_M &&
git diff --stat -C -C HEAD^..HEAD >actual_diff_stat_CC &&
test_cmp expect_diff_stat_CC actual_diff_stat_CC
'

# changed/text and rearranged/text falls below default 3% threshold
cat <<EOF >expect_diff_dirstat
10.8% dst/copy/changed/
10.8% dst/copy/rearranged/
10.8% dst/copy/unchanged/
10.8% dst/move/changed/
10.8% dst/move/rearranged/
10.8% dst/move/unchanged/
10.8% src/move/changed/
10.8% src/move/rearranged/
10.8% src/move/unchanged/
EOF

# rearranged/text falls below default 3% threshold
cat <<EOF >expect_diff_dirstat_M
5.8% changed/
29.3% dst/copy/changed/
29.3% dst/copy/rearranged/
29.3% dst/copy/unchanged/
5.8% dst/move/changed/
EOF

# rearranged/text falls below default 3% threshold
cat <<EOF >expect_diff_dirstat_CC
32.6% changed/
32.6% dst/copy/changed/
32.6% dst/move/changed/
EOF

test_expect_success 'various ways to misspell --dirstat' '
test_must_fail git show --dirstat10 &&
test_must_fail git show -X=20
'

test_expect_success 'vanilla --dirstat' '
git diff --dirstat HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff --dirstat -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff --dirstat -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

test_expect_success 'vanilla -X' '
git diff -X HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff -X -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff -X -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

# rearranged/text falls below 0% threshold (1 / (240 * 9 + 48 + 1) ~= 0.045 %)
cat <<EOF >expect_diff_dirstat
2.1% changed/
10.8% dst/copy/changed/
10.8% dst/copy/rearranged/
10.8% dst/copy/unchanged/
10.8% dst/move/changed/
10.8% dst/move/rearranged/
10.8% dst/move/unchanged/
10.8% src/move/changed/
10.8% src/move/rearranged/
10.8% src/move/unchanged/
EOF

cat <<EOF >expect_diff_dirstat_M
5.8% changed/
29.3% dst/copy/changed/
29.3% dst/copy/rearranged/
29.3% dst/copy/unchanged/
5.8% dst/move/changed/
0.1% dst/move/rearranged/
0.1% rearranged/
EOF

cat <<EOF >expect_diff_dirstat_CC
32.6% changed/
32.6% dst/copy/changed/
0.6% dst/copy/rearranged/
32.6% dst/move/changed/
0.6% dst/move/rearranged/
0.6% rearranged/
EOF

test_expect_success '--dirstat=0' '
git diff --dirstat=0 HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff --dirstat=0 -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff --dirstat=0 -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

test_expect_success '-X0' '
git diff -X0 HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff -X0 -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff -X0 -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

# rearranged/text falls below 0% threshold (1 / (240 * 9 + 48 + 1) ~= 0.045 %)
cat <<EOF >expect_diff_dirstat
2.1% changed/
10.8% dst/copy/changed/
10.8% dst/copy/rearranged/
10.8% dst/copy/unchanged/
32.5% dst/copy/
10.8% dst/move/changed/
10.8% dst/move/rearranged/
10.8% dst/move/unchanged/
32.5% dst/move/
65.1% dst/
10.8% src/move/changed/
10.8% src/move/rearranged/
10.8% src/move/unchanged/
32.5% src/move/
EOF

cat <<EOF >expect_diff_dirstat_M
5.8% changed/
29.3% dst/copy/changed/
29.3% dst/copy/rearranged/
29.3% dst/copy/unchanged/
88.0% dst/copy/
5.8% dst/move/changed/
0.1% dst/move/rearranged/
5.9% dst/move/
94.0% dst/
0.1% rearranged/
EOF

cat <<EOF >expect_diff_dirstat_CC
32.6% changed/
32.6% dst/copy/changed/
0.6% dst/copy/rearranged/
33.3% dst/copy/
32.6% dst/move/changed/
0.6% dst/move/rearranged/
33.3% dst/move/
66.6% dst/
0.6% rearranged/
EOF

test_expect_success '--dirstat=0 --cumulative' '
git diff --dirstat=0 --cumulative HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff --dirstat=0 --cumulative -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff --dirstat=0 --cumulative -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

cat <<EOF >expect_diff_dirstat
9.0% changed/
9.0% dst/copy/changed/
9.0% dst/copy/rearranged/
9.0% dst/copy/unchanged/
9.0% dst/move/changed/
9.0% dst/move/rearranged/
9.0% dst/move/unchanged/
9.0% rearranged/
9.0% src/move/changed/
9.0% src/move/rearranged/
9.0% src/move/unchanged/
EOF

cat <<EOF >expect_diff_dirstat_M
14.2% changed/
14.2% dst/copy/changed/
14.2% dst/copy/rearranged/
14.2% dst/copy/unchanged/
14.2% dst/move/changed/
14.2% dst/move/rearranged/
14.2% rearranged/
EOF

cat <<EOF >expect_diff_dirstat_CC
16.6% changed/
16.6% dst/copy/changed/
16.6% dst/copy/rearranged/
16.6% dst/move/changed/
16.6% dst/move/rearranged/
16.6% rearranged/
EOF

test_expect_success '--dirstat-by-file' '
git diff --dirstat-by-file HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff --dirstat-by-file -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff --dirstat-by-file -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

cat <<EOF >expect_diff_dirstat
27.2% dst/copy/
27.2% dst/move/
27.2% src/move/
EOF

cat <<EOF >expect_diff_dirstat_M
14.2% changed/
14.2% dst/copy/changed/
14.2% dst/copy/rearranged/
14.2% dst/copy/unchanged/
14.2% dst/move/changed/
14.2% dst/move/rearranged/
14.2% rearranged/
EOF

cat <<EOF >expect_diff_dirstat_CC
16.6% changed/
16.6% dst/copy/changed/
16.6% dst/copy/rearranged/
16.6% dst/move/changed/
16.6% dst/move/rearranged/
16.6% rearranged/
EOF

test_expect_success '--dirstat-by-file=10' '
git diff --dirstat-by-file=10 HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff --dirstat-by-file=10 -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff --dirstat-by-file=10 -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

cat <<EOF >expect_diff_dirstat
9.0% changed/
9.0% dst/copy/changed/
9.0% dst/copy/rearranged/
9.0% dst/copy/unchanged/
27.2% dst/copy/
9.0% dst/move/changed/
9.0% dst/move/rearranged/
9.0% dst/move/unchanged/
27.2% dst/move/
54.5% dst/
9.0% rearranged/
9.0% src/move/changed/
9.0% src/move/rearranged/
9.0% src/move/unchanged/
27.2% src/move/
EOF

cat <<EOF >expect_diff_dirstat_M
14.2% changed/
14.2% dst/copy/changed/
14.2% dst/copy/rearranged/
14.2% dst/copy/unchanged/
42.8% dst/copy/
14.2% dst/move/changed/
14.2% dst/move/rearranged/
28.5% dst/move/
71.4% dst/
14.2% rearranged/
EOF

cat <<EOF >expect_diff_dirstat_CC
16.6% changed/
16.6% dst/copy/changed/
16.6% dst/copy/rearranged/
33.3% dst/copy/
16.6% dst/move/changed/
16.6% dst/move/rearranged/
33.3% dst/move/
66.6% dst/
16.6% rearranged/
EOF

test_expect_success '--dirstat-by-file --cumulative' '
git diff --dirstat-by-file --cumulative HEAD^..HEAD >actual_diff_dirstat &&
test_cmp expect_diff_dirstat actual_diff_dirstat &&
git diff --dirstat-by-file --cumulative -M HEAD^..HEAD >actual_diff_dirstat_M &&
test_cmp expect_diff_dirstat_M actual_diff_dirstat_M &&
git diff --dirstat-by-file --cumulative -C -C HEAD^..HEAD >actual_diff_dirstat_CC &&
test_cmp expect_diff_dirstat_CC actual_diff_dirstat_CC
'

test_done
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