[PATCH] tests/qtest: check the return value

[zhujun2]

These variables "ret" are never referenced in the code, that
add check logic for the "ret"

Signed-off-by: zhujun2 <zhuj...@cmss.chinamobile.com>
---
 tests/qtest/test-filter-mirror.c     | 1 +
 tests/qtest/test-filter-redirector.c | 2 ++
 tests/qtest/virtio-net-test.c        | 1 +
 3 files changed, 4 insertions(+)

diff --git a/tests/qtest/test-filter-mirror.c b/tests/qtest/test-filter-mirror.c
index adeada3eb8..f3865f7519 100644
--- a/tests/qtest/test-filter-mirror.c
+++ b/tests/qtest/test-filter-mirror.c
@@ -61,6 +61,7 @@ static void test_mirror(void)
     g_assert_cmpint(len, ==, sizeof(send_buf));
     recv_buf = g_malloc(len);
     ret = recv(recv_sock[0], recv_buf, len, 0);
+    g_assert_cmpint(ret, ==, len);
     g_assert_cmpstr(recv_buf, ==, send_buf);
 
     g_free(recv_buf);
diff --git a/tests/qtest/test-filter-redirector.c 
b/tests/qtest/test-filter-redirector.c
index e72e3b7873..a77d5fd8ec 100644
--- a/tests/qtest/test-filter-redirector.c
+++ b/tests/qtest/test-filter-redirector.c
@@ -118,6 +118,7 @@ static void test_redirector_tx(void)
     g_assert_cmpint(len, ==, sizeof(send_buf));
     recv_buf = g_malloc(len);
     ret = recv(recv_sock, recv_buf, len, 0);
+    g_assert_cmpint(ret, ==, len);
     g_assert_cmpstr(recv_buf, ==, send_buf);
 
     g_free(recv_buf);
@@ -185,6 +186,7 @@ static void test_redirector_rx(void)
     g_assert_cmpint(len, ==, sizeof(send_buf));
     recv_buf = g_malloc(len);
     ret = recv(backend_sock[0], recv_buf, len, 0);
+    g_assert_cmpint(ret, ==, len);
     g_assert_cmpstr(recv_buf, ==, send_buf);
 
     close(send_sock);
diff --git a/tests/qtest/virtio-net-test.c b/tests/qtest/virtio-net-test.c
index fab5dd8b05..b470d8c6e2 100644
--- a/tests/qtest/virtio-net-test.c
+++ b/tests/qtest/virtio-net-test.c
@@ -92,6 +92,7 @@ static void tx_test(QVirtioDevice *dev,
 
     ret = recv(socket, buffer, len, 0);
     g_assert_cmpstr(buffer, ==, "TEST");
+    g_assert_cmpint(ret, ==, len);
 }
 
 static void rx_stop_cont_test(QVirtioDevice *dev,
-- 
2.17.1