another xargs test

grade-lab-util

@@ -84,7 +84,7 @@ def test_find_recursive():
             './%s/%s/%s' % (dirs[0], dirs[1], needle),
             './%s/%s' % (dirs[2], needle))
 
-@test(19, "xargs")
+@test(10, "xargs")
 def test_xargs():
     r.run_qemu(shell_script([
         'sh < xargstest.sh',
@@ -93,6 +93,11 @@ def test_xargs():
     matches = re.findall("hello", r.qemu.output)
     assert_equal(len(matches), 3, "Number of appearances of 'hello'")
 
+@test(9, "xargs, multi-line echo")
+def test_xargs_multiline():
+    r.run_qemu(shell_script(['(echo 1 ; echo 2) | xargs echo']))
+    r.match('^1$', '^2$')
+
 @test(1, "time")
 def test_time():
     check_time()