From c8bae7493d2f2910b57f13ded012e86bdcfb0532 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 16:47:53 +0200
Subject: Adding upstream version 1:2.39.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 t/t4032-diff-inter-hunk-context.sh | 118 +++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100755 t/t4032-diff-inter-hunk-context.sh

(limited to 't/t4032-diff-inter-hunk-context.sh')

diff --git a/t/t4032-diff-inter-hunk-context.sh b/t/t4032-diff-inter-hunk-context.sh
new file mode 100755
index 0000000..7db92d0
--- /dev/null
+++ b/t/t4032-diff-inter-hunk-context.sh
@@ -0,0 +1,118 @@
+#!/bin/sh
+
+test_description='diff hunk fusing'
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+f() {
+	echo $1
+	i=1
+	while test $i -le $2
+	do
+		echo $i
+		i=$(expr $i + 1)
+	done
+	echo $3
+}
+
+t() {
+	use_config=
+	git config --unset diff.interHunkContext
+
+	case $# in
+	4) hunks=$4; cmd="diff -U$3";;
+	5) hunks=$5; cmd="diff -U$3 --inter-hunk-context=$4";;
+	6) hunks=$5; cmd="diff -U$3"; git config diff.interHunkContext $4; use_config="(diff.interHunkContext=$4) ";;
+	esac
+	label="$use_config$cmd, $1 common $2"
+	file=f$1
+	expected=expected.$file.$3.$hunks
+
+	if ! test -f $file
+	then
+		f A $1 B >$file
+		git add $file
+		git commit -q -m. $file
+		f X $1 Y >$file
+	fi
+
+	test_expect_success "$label: count hunks ($hunks)" "
+		test $(git $cmd $file | grep '^@@ ' | wc -l) = $hunks
+	"
+
+	test -f $expected &&
+	test_expect_success "$label: check output" "
+		git $cmd $file | grep -v '^index ' >actual &&
+		test_cmp $expected actual
+	"
+}
+
+cat <<EOF >expected.f1.0.1 || exit 1
+diff --git a/f1 b/f1
+--- a/f1
++++ b/f1
+@@ -1,3 +1,3 @@
+-A
++X
+ 1
+-B
++Y
+EOF
+
+cat <<EOF >expected.f1.0.2 || exit 1
+diff --git a/f1 b/f1
+--- a/f1
++++ b/f1
+@@ -1 +1 @@
+-A
++X
+@@ -3 +3 @@ A
+-B
++Y
+EOF
+
+# common lines	ctx	intrctx	hunks
+t 1 line	0		2
+t 1 line	0	0	2
+t 1 line	0	1	1
+t 1 line	0	2	1
+t 1 line	1		1
+
+t 2 lines	0		2
+t 2 lines	0	0	2
+t 2 lines	0	1	2
+t 2 lines	0	2	1
+t 2 lines	1		1
+
+t 3 lines	1		2
+t 3 lines	1	0	2
+t 3 lines	1	1	1
+t 3 lines	1	2	1
+
+t 9 lines	3		2
+t 9 lines	3	2	2
+t 9 lines	3	3	1
+
+#					use diff.interHunkContext?
+t 1 line	0	0	2	config
+t 1 line	0	1	1	config
+t 1 line	0	2	1	config
+t 9 lines	3	3	1	config
+t 2 lines	0	0	2	config
+t 2 lines	0	1	2	config
+t 2 lines	0	2	1	config
+t 3 lines	1	0	2	config
+t 3 lines	1	1	1	config
+t 3 lines	1	2	1	config
+t 9 lines	3	2	2	config
+t 9 lines	3	3	1	config
+
+test_expect_success 'diff.interHunkContext invalid' '
+	git config diff.interHunkContext asdf &&
+	test_must_fail git diff &&
+	git config diff.interHunkContext -1 &&
+	test_must_fail git diff
+'
+
+test_done
-- 
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