Make core-buffer folder with all common stuff used in the buffer

core-buffer/test/test_UdpRecvModule.cpp

@@ -0,0 +1,91 @@
+#include "gtest/gtest.h"
+#include "UdpRecvModule.hpp"
+#include "jungfrau.hpp"
+#include "mock/udp.hpp"
+
+using namespace std;
+
+TEST(UdpRecvModule, basic_interaction)
+{
+    uint16_t udp_port(12000);
+
+    RingBuffer<UdpFrameMetadata> ring_buffer(10);
+    UdpRecvModule udp_recv_module(ring_buffer);
+
+    udp_recv_module.start_recv(udp_port, JUNGFRAU_DATA_BYTES_PER_FRAME);
+
+    EXPECT_THROW(
+            udp_recv_module.start_recv(udp_port, JUNGFRAU_BYTES_PER_PACKET),
+            runtime_error);
+
+    // Stop should never throw an exception.
+    udp_recv_module.stop_recv();
+    EXPECT_NO_THROW(udp_recv_module.stop_recv());
+}
+
+TEST(UdpRecvModule, simple_recv)
+{
+    uint16_t udp_port(MOCK_UDP_PORT);
+    size_t n_msg(128);
+
+    RingBuffer<UdpFrameMetadata> ring_buffer(10);
+    UdpRecvModule udp_recv_module(ring_buffer);
+
+    udp_recv_module.start_recv(udp_port, JUNGFRAU_DATA_BYTES_PER_FRAME);
+
+    this_thread::sleep_for(chrono::milliseconds(100));
+
+    // The first slot should be already reserved in the ring buffer.
+    ASSERT_FALSE(ring_buffer.is_empty());
+
+    auto send_socket_fd = socket(AF_INET,SOCK_DGRAM,0);
+    ASSERT_TRUE(send_socket_fd >= 0);
+
+    auto server_address = get_server_address(udp_port);
+
+    jungfrau_packet send_udp_buffer;
+    send_udp_buffer.bunchid = 100;
+    send_udp_buffer.debug = 1000;
+
+    send_udp_buffer.framenum = 1;
+    for (size_t i=0; i<n_msg; i++) {
+        send_udp_buffer.packetnum = i;
+
+        ::sendto(
+                send_socket_fd,
+                &send_udp_buffer,
+                JUNGFRAU_BYTES_PER_PACKET,
+                0,
+                (sockaddr*) &server_address,
+                sizeof(server_address));
+    }
+
+    ASSERT_FALSE(ring_buffer.is_empty());
+    auto result = ring_buffer.read();
+    // The slot should be reserved, but not yet committed.
+    // Only with next frame packet commit.
+    ASSERT_TRUE(result.first == nullptr);
+
+    // When packet from new frame is received, the previous frame should be
+    // committed to the ring buffer.
+    send_udp_buffer.framenum = 2;
+    for (size_t i=0; i<128; i++){
+        send_udp_buffer.packetnum = i;
+
+        ::sendto(
+                send_socket_fd,
+                &send_udp_buffer,
+                JUNGFRAU_BYTES_PER_PACKET,
+                0,
+                (sockaddr*) &server_address,
+                sizeof(server_address));
+    }
+
+    this_thread::sleep_for(chrono::milliseconds(100));
+
+    ASSERT_FALSE(ring_buffer.is_empty());
+    auto result2 = ring_buffer.read();
+    ASSERT_TRUE(result2.first != nullptr);
+
+    ::close(send_socket_fd);
+}