#!/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