1 files changed, 114 insertions, 0 deletions
diff --git a/third_party/git/t/t4018-diff-funcname.sh b/third_party/git/t/t4018-diff-funcname.sh
new file mode 100755
index 000000000000..02255a08bf17
--- /dev/null
+++ b/third_party/git/t/t4018-diff-funcname.sh
@@ -0,0 +1,114 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Johannes E. Schindelin
+#
+
+test_description='Test custom diff function name patterns'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	# a non-trivial custom pattern
+	git config diff.custom1.funcname "!static
+!String
+[^ 	].*s.*" &&
+
+	# a custom pattern which matches to end of line
+	git config diff.custom2.funcname "......Beer\$" &&
+
+	# alternation in pattern
+	git config diff.custom3.funcname "Beer$" &&
+	git config diff.custom3.xfuncname "^[ 	]*((public|static).*)$" &&
+
+	# for regexp compilation tests
+	echo A >A.java &&
+	echo B >B.java
+'
+
+diffpatterns="
+	ada
+	bibtex
+	cpp
+	csharp
+	css
+	dts
+	elixir
+	fortran
+	fountain
+	golang
+	html
+	java
+	matlab
+	objc
+	pascal
+	perl
+	php
+	python
+	ruby
+	rust
+	tex
+	custom1
+	custom2
+	custom3
+"
+
+for p in $diffpatterns
+do
+	test_expect_success "builtin $p pattern compiles" '
+		echo "*.java diff=$p" >.gitattributes &&
+		test_expect_code 1 git diff --no-index \
+			A.java B.java 2>msg &&
+		test_i18ngrep ! fatal msg &&
+		test_i18ngrep ! error msg
+	'
+	test_expect_success "builtin $p wordRegex pattern compiles" '
+		echo "*.java diff=$p" >.gitattributes &&
+		test_expect_code 1 git diff --no-index --word-diff \
+			A.java B.java 2>msg &&
+		test_i18ngrep ! fatal msg &&
+		test_i18ngrep ! error msg
+	'
+done
+
+test_expect_success 'last regexp must not be negated' '
+	echo "*.java diff=java" >.gitattributes &&
+	test_config diff.java.funcname "!static" &&
+	test_expect_code 128 git diff --no-index A.java B.java 2>msg &&
+	test_i18ngrep ": Last expression must not be negated:" msg
+'
+
+test_expect_success 'setup hunk header tests' '
+	for i in $diffpatterns
+	do
+		echo "$i-* diff=$i"
+	done > .gitattributes &&
+
+	# add all test files to the index
+	(
+		cd "$TEST_DIRECTORY"/t4018 &&
+		git --git-dir="$TRASH_DIRECTORY/.git" add .
+	) &&
+
+	# place modified files in the worktree
+	for i in $(git ls-files)
+	do
+		sed -e "s/ChangeMe/IWasChanged/" <"$TEST_DIRECTORY/t4018/$i" >"$i" || return 1
+	done
+'
+
+# check each individual file
+for i in $(git ls-files)
+do
+	if grep broken "$i" >/dev/null 2>&1
+	then
+		result=failure
+	else
+		result=success
+	fi
+	test_expect_$result "hunk header: $i" "
+		git diff -U1 $i >actual &&
+		grep '@@ .* @@.*RIGHT' actual
+	"
+done
+
+test_done