1 files changed, 84 insertions, 0 deletions
diff --git a/t/t4018-diff-funcname.sh b/t/t4018-diff-funcname.sh
new file mode 100755
index 0000000000..5b10e976a3
--- /dev/null
+++ b/t/t4018-diff-funcname.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Johannes E. Schindelin
+#
+
+test_description='Test custom diff function name patterns'
+
+. ./test-lib.sh
+
+LF='
+'
+
+cat > Beer.java << EOF
+public class Beer
+{
+	int special;
+	public static void main(String args[])
+	{
+		String s=" ";
+		for(int x = 99; x > 0; x--)
+		{
+			System.out.print(x + " bottles of beer on the wall "
+				+ x + " bottles of beer\n"
+				+ "Take one down, pass it around, " + (x - 1)
+				+ " bottles of beer on the wall.\n");
+		}
+		System.out.print("Go to the store, buy some more,\n"
+			+ "99 bottles of beer on the wall.\n");
+	}
+}
+EOF
+
+sed 's/beer\\/beer,\\/' < Beer.java > Beer-correct.java
+
+builtin_patterns="bibtex cpp html java objc pascal php python ruby tex"
+for p in $builtin_patterns
+do
+	test_expect_success "builtin $p pattern compiles" '
+		echo "*.java diff=$p" > .gitattributes &&
+		! ( git diff --no-index Beer.java Beer-correct.java 2>&1 |
+			grep "fatal" > /dev/null )
+	'
+done
+
+test_expect_success 'default behaviour' '
+	rm -f .gitattributes &&
+	git diff --no-index Beer.java Beer-correct.java |
+	grep "^@@.*@@ public class Beer"
+'
+
+test_expect_success 'preset java pattern' '
+	echo "*.java diff=java" >.gitattributes &&
+	git diff --no-index Beer.java Beer-correct.java |
+	grep "^@@.*@@ public static void main("
+'
+
+git config diff.java.funcname '!static
+!String
+[^ 	].*s.*'
+
+test_expect_success 'custom pattern' '
+	git diff --no-index Beer.java Beer-correct.java |
+	grep "^@@.*@@ int special;$"
+'
+
+test_expect_success 'last regexp must not be negated' '
+	git config diff.java.funcname "!static" &&
+	git diff --no-index Beer.java Beer-correct.java 2>&1 |
+	grep "fatal: Last expression must not be negated:"
+'
+
+test_expect_success 'pattern which matches to end of line' '
+	git config diff.java.funcname "Beer$" &&
+	git diff --no-index Beer.java Beer-correct.java |
+	grep "^@@.*@@ Beer"
+'
+
+test_expect_success 'alternation in pattern' '
+	git config diff.java.xfuncname "^[ 	]*((public|static).*)$" &&
+	git diff --no-index Beer.java Beer-correct.java |
+	grep "^@@.*@@ public static void main("
+'
+
+test_done