Update lease_spec.rb

dhcp-service/spec/lease_spec.rb

@@ -11,43 +11,48 @@ def wait_for_leases(expected_count, retries = 5, delay = 2)
       return if db_client[:lease4].count == expected_count
       sleep delay
     end
-    #raise "Expected #{expected_count} leases, got #{db_client[:lease4].count}"
+    raise "Expected #{expected_count} leases, got #{db_client[:lease4].count}"
   end
 
   def wait_for_packet_capture(process, packets, delay = 5)
-    sleep delay 
-    sleep(packets * 0.1) 
+    sleep delay # Ensure packet capture process has started
+    sleep(packets * 0.1) # Additional wait time based on number of packets
+    Process.wait(process) # Ensure the packet capture process has finished
   end
 
   before do
     db_client[:lease4].truncate
     db_client.disconnect
-    Process.fork { `tshark -iany -f 'ip src 172.1.0.10 and udp port 67' -w ./dhcp_offer_packet.pcap -q -a packets:10` }
-    sleep 10 # Adding a delay to ensure the process is ready
   end
 
   after { db_client.disconnect }
 
   context "when ordinary dhcp clients send DHCP requests" do
     it "provides 10 leases to 10 clients, leases persist in the DB and provides DHCP options from global options" do
+      pid = Process.fork { exec "tshark -iany -f 'ip src 172.1.0.10 and udp port 67' -w ./dhcp_offer_packet.pcap -q -a packets:10" }
+      sleep 5 # Ensure the process is ready
+
       `perfdhcp -r 2 \
         -n 10 \
         -R 10 \
         -d 2 \
         -4 \
         -W 20000000 \
         172.1.0.10`
+
       wait_for_leases(10)
-      wait_for_packet_capture() 
-      expect(db_client[:lease4].count).to eq(10)
+      wait_for_packet_capture(pid, 10)
       expect(dhcp_offer_packet_content).to include(File.read("./spec/fixtures/expected_lease_options_ordinary.txt"))
       expect(dhcp_offer_packet_content).not_to include("Option: (234) Private")
     end
   end
 
   context "when Windows 10 devices with client class value of 'W10TEST' send DHCP requests" do
     it "provides a lease with DHCP options from global options but overrides dns-name option from client class options" do
-      `perfdhcp -r 2 \
+      pid = Process.fork { exec "tshark -iany -f 'ip src 172.1.0.10 and udp port 67' -w ./dhcp_offer_packet.pcap -q -a packets:3" }
+      sleep 5 # Ensure the process is ready
+
+     `perfdhcp -r 2 \
         -n 3 \
         -R 1 \
         -b mac=00:0c:01:02:03:04 \
@@ -56,15 +61,19 @@ def wait_for_packet_capture(process, packets, delay = 5)
         -o 77,57313054455354 \
         -W 20000000 \
         172.1.0.10`
+
       wait_for_leases(3)
-      wait_for_packet_capture()
+      wait_for_packet_capture(pid, 3)
       expect(dhcp_offer_packet_content).to include(File.read("./spec/fixtures/expected_lease_options_client_class.txt"))
     end
   end
 
   context "when Windows 10 devices with delivery optimisation enabled send DHCP requests" do
     it "provides a lease with DHCP options from global options as well as an additional option: private option 234" do
-      `perfdhcp -r 2 \
+      pid = Process.fork { exec "tshark -iany -f 'ip src 172.1.0.10 and udp port 67' -w ./dhcp_offer_packet.pcap -q -a packets:3" }
+      sleep 5 # Ensure the process is ready
+
+    `perfdhcp -r 2 \
         -n 3 \
         -R 1 \
         -b mac=00:0c:01:02:03:04 \
@@ -73,8 +82,9 @@ def wait_for_packet_capture(process, packets, delay = 5)
         -o 55,00EA \
         -W 20000000 \
         172.1.0.10`
+
       wait_for_leases(3)
-      wait_for_packet_capture()
+      wait_for_packet_capture(pid, 3)
       expect(dhcp_offer_packet_content).to include(File.read("./spec/fixtures/expected_lease_options_delivery_optimised.txt"))
     end
   end