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#!/bin/sh

test_description='combined and merge diff handle binary files and textconv'
. ./test-lib.sh

test_expect_success 'setup binary merge conflict' '
	echo oneQ1 | q_to_nul >binary &&
	git add binary &&
	git commit -m one &&
	echo twoQ2 | q_to_nul >binary &&
	git commit -a -m two &&
	two=$(git rev-parse --short HEAD:binary) &&
	git checkout -b branch-binary HEAD^ &&
	echo threeQ3 | q_to_nul >binary &&
	git commit -a -m three &&
	three=$(git rev-parse --short HEAD:binary) &&
	test_must_fail git merge main &&
	echo resolvedQhooray | q_to_nul >binary &&
	git commit -a -m resolved &&
	res=$(git rev-parse --short HEAD:binary)
'

cat >expect <<EOF
resolved

diff --git a/binary b/binary
index $three..$res 100644
Binary files a/binary and b/binary differ
resolved

diff --git a/binary b/binary
index $two..$res 100644
Binary files a/binary and b/binary differ
EOF
test_expect_success 'diff -m indicates binary-ness' '
	git show --format=%s -m >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
resolved

diff --combined binary
index $three,$two..$res
Binary files differ
EOF
test_expect_success 'diff -c indicates binary-ness' '
	git show --format=%s -c >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
resolved

diff --cc binary
index $three,$two..$res
Binary files differ
EOF
test_expect_success 'diff --cc indicates binary-ness' '
	git show --format=%s --cc >actual &&
	test_cmp expect actual
'

test_expect_success 'setup non-binary with binary attribute' '
	git checkout main &&
	test_commit one text &&
	test_commit two text &&
	two=$(git rev-parse --short HEAD:text) &&
	git checkout -b branch-text HEAD^ &&
	test_commit three text &&
	three=$(git rev-parse --short HEAD:text) &&
	test_must_fail git merge main &&
	test_commit resolved text &&
	res=$(git rev-parse --short HEAD:text) &&
	echo text -diff >.gitattributes
'

cat >expect <<EOF
resolved

diff --git a/text b/text
index $three..$res 100644
Binary files a/text and b/text differ
resolved

diff --git a/text b/text
index $two..$res 100644
Binary files a/text and b/text differ
EOF
test_expect_success 'diff -m respects binary attribute' '
	git show --format=%s -m >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
resolved

diff --combined text
index $three,$two..$res
Binary files differ
EOF
test_expect_success 'diff -c respects binary attribute' '
	git show --format=%s -c >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
resolved

diff --cc text
index $three,$two..$res
Binary files differ
EOF
test_expect_success 'diff --cc respects binary attribute' '
	git show --format=%s --cc >actual &&
	test_cmp expect actual
'

test_expect_success 'setup textconv attribute' '
	echo "text diff=upcase" >.gitattributes &&
	git config diff.upcase.textconv "tr a-z A-Z <"
'

cat >expect <<EOF
resolved

diff --git a/text b/text
index $three..$res 100644
--- a/text
+++ b/text
@@ -1 +1 @@
-THREE
+RESOLVED
resolved

diff --git a/text b/text
index $two..$res 100644
--- a/text
+++ b/text
@@ -1 +1 @@
-TWO
+RESOLVED
EOF
test_expect_success 'diff -m respects textconv attribute' '
	git show --format=%s -m >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
resolved

diff --combined text
index $three,$two..$res
--- a/text
+++ b/text
@@@ -1,1 -1,1 +1,1 @@@
- THREE
 -TWO
++RESOLVED
EOF
test_expect_success 'diff -c respects textconv attribute' '
	git show --format=%s -c >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
resolved

diff --cc text
index $three,$two..$res
--- a/text
+++ b/text
@@@ -1,1 -1,1 +1,1 @@@
- THREE
 -TWO
++RESOLVED
EOF
test_expect_success 'diff --cc respects textconv attribute' '
	git show --format=%s --cc >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
diff --combined text
index $three,$two..$res
--- a/text
+++ b/text
@@@ -1,1 -1,1 +1,1 @@@
- three
 -two
++resolved
EOF
test_expect_success 'diff-tree plumbing does not respect textconv' '
	git diff-tree HEAD -c -p >full &&
	tail -n +2 full >actual &&
	test_cmp expect actual
'

cat >expect <<EOF
diff --cc text
index $three,$two..0000000
--- a/text
+++ b/text
@@@ -1,1 -1,1 +1,5 @@@
++<<<<<<< HEAD
 +THREE
++=======
+ TWO
++>>>>>>> MAIN
EOF
test_expect_success 'diff --cc respects textconv on worktree file' '
	git reset --hard HEAD^ &&
	test_must_fail git merge main &&
	git diff >actual &&
	test_cmp expect actual
'

test_done
debug log:

solving f23824c2b6 ...
found f23824c2b6 in https://public-inbox.org/git/d141e476b18bd0bdc0b559223f1fe242cfa4ea8c.1605221039.git.gitgitgadget@gmail.com/ ||
	https://public-inbox.org/git/cf6c1d1d83fc7665167229304f5ba110656da310.1605629548.git.gitgitgadget@gmail.com/
found 7f9ad9fa3d in https://80x24.org/mirrors/git.git
preparing index
index prepared:
100755 7f9ad9fa3d1f97b9aeedbb0c1d351be5749837ee	t/t4048-diff-combined-binary.sh

applying [1/2] https://public-inbox.org/git/d141e476b18bd0bdc0b559223f1fe242cfa4ea8c.1605221039.git.gitgitgadget@gmail.com/
diff --git a/t/t4048-diff-combined-binary.sh b/t/t4048-diff-combined-binary.sh
index 7f9ad9fa3d..f23824c2b6 100755

Checking patch t/t4048-diff-combined-binary.sh...
Applied patch t/t4048-diff-combined-binary.sh cleanly.

skipping https://public-inbox.org/git/cf6c1d1d83fc7665167229304f5ba110656da310.1605629548.git.gitgitgadget@gmail.com/ for f23824c2b6
index at:
100755 f23824c2b61efa55d263ccb622c76913b72a8b78	t/t4048-diff-combined-binary.sh

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