Add test case: inject IPv4 based TCP RST packet after recv Sub-ACK

test/gtest_inject_tcp_rst.cpp

@@ -2,6 +2,7 @@
 
 #include "packet_injector_test_frame.h"
 
+#if 1
 TEST(INJECT_IPV4_BASED_TCP_RST, AFTER_RECV_SYN_ACK)
 {
     struct packet_injector_case test = {
@@ -31,6 +32,39 @@ TEST(INJECT_IPV4_BASED_TCP_RST, AFTER_RECV_SYN_ACK)
 
     packet_injector_test_frame_run(&test);
 }
+#endif
+
+#if 1
+TEST(INJECT_IPV4_BASED_TCP_RST, AFTER_RECV_SUB_ACK)
+{
+    struct packet_injector_case test = {
+        // descriptor
+        .finish_clean_work_dir = 1,
+        .descriptor = "Inject IPv4 based TCP RST after receiving SUB-ACK packet.",
+        .work_dir = "/tmp/inject_ipv4_based_tcp_rst_after_recv_sub_ack/", // user defined work directory
+
+        // prefix
+        .input_prefix = "pcap/inject_ipv4_based_tcp_rst_after_recv_sub_ack/test/",
+        .output_prefix = "/tmp/",
+
+        // input pcap
+        .input_pcap = "input.pcap",
+
+        // compare
+        .c2s_expect_pcap = "expect-192.0.2.211:42242-192.0.2.110:80-1.pcap",
+        .c2s_output_pcap = "inject-192.0.2.211:42242-192.0.2.110:80-1.pcap",
+
+        .s2c_expect_pcap = "expect-192.0.2.110:80-192.0.2.211:42242-2.pcap",
+        .s2c_output_pcap = "inject-192.0.2.110:80-192.0.2.211:42242-2.pcap",
+
+        // packet injector command
+        .packet_injector_cmd = "./packet_injector -t tcp-rst -c c2s-packet -n 2",
+        .diff_skip_pattern = "-I frame.time -I frame.time_epoch -I ip.id -I ip.ttl -I ip.checksum -I tcp.checksum -I tcp.window_size",
+    };
+
+    packet_injector_test_frame_run(&test);
+}
+#endif
 
 int main(int argc, char **argv)
 {

test/packet_injector_test_frame.cpp

@@ -175,9 +175,7 @@ void packet_injector_test_frame_run(struct packet_injector_case *test)
     EXPECT_TRUE(replace_file_string(config_file_abs_path, "dumpfile_dir = \"/tmp/dumpfile/\"", temp) == 0);
 
     // run packet injector
-    chdir(test->work_dir);
+    system_cmd("cd %s && %s && cd ..", test->work_dir, test->packet_injector_cmd);
-    system_cmd(test->packet_injector_cmd);
-    chdir("../");
 
     // compare pcap
     if (test->c2s_output_pcap && test->c2s_expect_pcap)