test: fix compile warning in bufferlist.cc

test/bufferlist.cc: In member function ‘virtual void
Buffer_constructors_Test::TestBody()’:
test/bufferlist.cc:154:36: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
     ::system("echo ABC > testfile");
                                    ^
test/bufferlist.cc: In member function ‘virtual void
TestRawPipe::SetUp()’:
test/bufferlist.cc:182:36: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
     ::system("echo ABC > testfile");
                                    ^
test/bufferlist.cc: In member function ‘virtual void
BufferList_read_file_Test::TestBody()’:
test/bufferlist.cc:1768:53: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
   ::system("echo ABC > testfile ; chmod 0 testfile");
                                                     ^
test/bufferlist.cc:1770:32: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
   ::system("chmod +r testfile");
                                ^
test/bufferlist.cc: In member function ‘virtual void
BufferList_read_fd_Test::TestBody()’:
test/bufferlist.cc:1781:34: warning: ignoring return value of ‘int
system(const char*)’, declared with attribute warn_unused_result
[-Wunused-result]
   ::system("echo ABC > testfile");

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>

diff --git a/src/test/bufferlist.cc b/src/test/bufferlist.cc
index 3b379afded58bc8a7ce5b24dec4577e7f1e084ab..61ddc0547f31d61ca1f1a1a7f9cd13c4ee9951cb 100644 (file)
--- a/src/test/bufferlist.cc
+++ b/src/test/bufferlist.cc
@@ -151,7 +151,7 @@ TEST(Buffer, constructors) {
 
     unsigned zc_len = 4;
     ::unlink("testfile");
-    ::system("echo ABC > testfile");
+    EXPECT_EQ(0, ::system("echo ABC > testfile"));
     int fd = ::open("testfile", O_RDONLY);
     bufferptr ptr(buffer::create_zero_copy(zc_len, fd, NULL));
     EXPECT_EQ(zc_len, ptr.length());
@@ -179,7 +179,7 @@ protected:
   virtual void SetUp() {
     len = 4;
     ::unlink("testfile");
-    ::system("echo ABC > testfile");
+    EXPECT_EQ(0, ::system("echo ABC > testfile"));
     fd = ::open("testfile", O_RDONLY);
     assert(fd >= 0);
   }
@@ -1765,9 +1765,9 @@ TEST(BufferList, read_file) {
   bufferlist bl;
   ::unlink("testfile");
   EXPECT_EQ(-ENOENT, bl.read_file("UNLIKELY", &error));
-  ::system("echo ABC > testfile ; chmod 0 testfile");
+  EXPECT_EQ(0, ::system("echo ABC > testfile ; chmod 0 testfile"));
   EXPECT_EQ(-EACCES, bl.read_file("testfile", &error));
-  ::system("chmod +r testfile");
+  EXPECT_EQ(0, ::system("chmod +r testfile"));
   EXPECT_EQ(0, bl.read_file("testfile", &error));
   ::unlink("testfile");
   EXPECT_EQ((unsigned)4, bl.length());
@@ -1778,7 +1778,7 @@ TEST(BufferList, read_file) {
 TEST(BufferList, read_fd) {
   unsigned len = 4;
   ::unlink("testfile");
-  ::system("echo ABC > testfile");
+  EXPECT_EQ(0, ::system("echo ABC > testfile"));
   int fd = -1;
   bufferlist bl;
   EXPECT_EQ(-EBADF, bl.read_fd(fd, len));