git-commit-vandalism/t/t4022-diff-rewrite.sh
Ævar Arnfjörð Bjarmason 1c720357ce tests: stop using top-level "README" and "COPYING" files
In 459b8d22e5 (tests: do not borrow from COPYING and README from the
real source, 2015-02-15) tests that used "lib-diff.sh" (called
"diff-lib.sh" then) were made to stop relying on the top-level COPYING
file, but we still had other tests that referenced it.

Let's move them over to use the "COPYING_test_data" utility function
introduced in the preceding commit, and in the case of the one test
that needed the "README" file use a ROT 13 version of that "COPYING"
test data. That test added in afd222967c (Extend testing git-mv for
renaming of subdirectories, 2006-07-26) just needs more test data that's not the same as the "COPYING" test data, so a ROT 13 version will do.

This change removes the last references to ../{README,COPYING} in the
test suite.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-15 09:36:48 -07:00

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#!/bin/sh
test_description='rewrite diff'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-diff-data.sh
test_expect_success setup '
COPYING_test_data >test.data &&
cp test.data test &&
git add test &&
tr \
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" \
"nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM" \
<test.data >test &&
echo "to be deleted" >test2 &&
blob=$(git hash-object test2) &&
blob=$(git rev-parse --short $blob) &&
git add test2
'
test_expect_success 'detect rewrite' '
actual=$(git diff-files -B --summary test) &&
verbose expr "$actual" : " rewrite test ([0-9]*%)$"
'
cat >expect <<EOF
diff --git a/test2 b/test2
deleted file mode 100644
index $blob..0000000
--- a/test2
+++ /dev/null
@@ -1 +0,0 @@
-to be deleted
EOF
test_expect_success 'show deletion diff without -D' '
rm test2 &&
git diff -- test2 >actual &&
test_cmp expect actual
'
cat >expect <<EOF
diff --git a/test2 b/test2
deleted file mode 100644
index $blob..0000000
EOF
test_expect_success 'suppress deletion diff with -D' '
git diff -D -- test2 >actual &&
test_cmp expect actual
'
test_expect_success 'show deletion diff with -B' '
git diff -B -- test >actual &&
grep "Linus Torvalds" actual
'
test_expect_success 'suppress deletion diff with -B -D' '
git diff -B -D -- test >actual &&
grep -v "Linus Torvalds" actual
'
test_expect_success 'prepare a file that ends with an incomplete line' '
test_seq 1 99 >seq &&
printf 100 >>seq &&
git add seq &&
git commit seq -m seq
'
test_expect_success 'rewrite the middle 90% of sequence file and terminate with newline' '
test_seq 1 5 >seq &&
test_seq 9331 9420 >>seq &&
test_seq 96 100 >>seq
'
test_expect_success 'confirm that sequence file is considered a rewrite' '
git diff -B seq >res &&
grep "dissimilarity index" res
'
test_expect_success 'no newline at eof is on its own line without -B' '
git diff seq >res &&
grep "^\\\\ " res &&
! grep "^..*\\\\ " res
'
test_expect_success 'no newline at eof is on its own line with -B' '
git diff -B seq >res &&
grep "^\\\\ " res &&
! grep "^..*\\\\ " res
'
test_done