1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117
  
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      #!/bin/sh
test_description='diff hunk fusing'
. ./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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