[Copp]Refactor coppmgr tests (sonic-net#3093)

What I did
Refactoring coppmgr mock tests

Why I did it
After migration to bookworm, coppmgr tests started failing due to the use of sudo commands.

Author: dgsudharsan

cfgmgr/coppmgr.cpp

@@ -21,10 +21,11 @@ static set<string> g_copp_init_set;
 
 void CoppMgr::parseInitFile(void)
 {
-    std::ifstream ifs(COPP_INIT_FILE);
+    std::ifstream ifs(m_coppCfgfile);
+
     if (ifs.fail())
     {
-        SWSS_LOG_ERROR("COPP init file %s not found", COPP_INIT_FILE);
+        SWSS_LOG_ERROR("COPP init file %s not found", m_coppCfgfile.c_str());
         return;
     }
     json j = json::parse(ifs);
@@ -293,15 +294,16 @@ bool CoppMgr::isDupEntry(const std::string &key, std::vector<FieldValueTuple> &f
     return true;
 }
 
-CoppMgr::CoppMgr(DBConnector *cfgDb, DBConnector *appDb, DBConnector *stateDb, const vector<string> &tableNames) :
+CoppMgr::CoppMgr(DBConnector *cfgDb, DBConnector *appDb, DBConnector *stateDb, const vector<string> &tableNames, const string copp_init_file) :
         Orch(cfgDb, tableNames),
         m_cfgCoppTrapTable(cfgDb, CFG_COPP_TRAP_TABLE_NAME),
         m_cfgCoppGroupTable(cfgDb, CFG_COPP_GROUP_TABLE_NAME),
         m_cfgFeatureTable(cfgDb, CFG_FEATURE_TABLE_NAME),
         m_appCoppTable(appDb, APP_COPP_TABLE_NAME),
         m_stateCoppTrapTable(stateDb, STATE_COPP_TRAP_TABLE_NAME),
         m_stateCoppGroupTable(stateDb, STATE_COPP_GROUP_TABLE_NAME),
-        m_coppTable(appDb, APP_COPP_TABLE_NAME)
+        m_coppTable(appDb, APP_COPP_TABLE_NAME),
+        m_coppCfgfile(copp_init_file)
 {
     SWSS_LOG_ENTER();
     parseInitFile();

cfgmgr/coppmgr.h

@@ -62,7 +62,7 @@ class CoppMgr : public Orch
 {
 public:
     CoppMgr(DBConnector *cfgDb, DBConnector *appDb, DBConnector *stateDb,
-        const std::vector<std::string> &tableNames);
+        const std::vector<std::string> &tableNames, const std::string copp_init_file = COPP_INIT_FILE);
 
     using Orch::doTask;
 private:
@@ -75,6 +75,7 @@ class CoppMgr : public Orch
     CoppCfg                m_coppGroupInitCfg;
     CoppCfg                m_coppTrapInitCfg;
     CoppCfg                m_featuresCfgTable;
+    std::string            m_coppCfgfile;
 
 
     void doTask(Consumer &consumer);

tests/mock_tests/Makefile.am

@@ -130,7 +130,8 @@ tests_SOURCES = aclorch_ut.cpp \
                 $(top_srcdir)/orchagent/dash/dashvnetorch.cpp \
                 $(top_srcdir)/cfgmgr/buffermgrdyn.cpp \
                 $(top_srcdir)/warmrestart/warmRestartAssist.cpp \
-                $(top_srcdir)/orchagent/dash/pbutils.cpp
+                $(top_srcdir)/orchagent/dash/pbutils.cpp \
+                $(top_srcdir)/cfgmgr/coppmgr.cpp
 
 tests_SOURCES += $(FLEX_CTR_DIR)/flex_counter_manager.cpp $(FLEX_CTR_DIR)/flex_counter_stat_manager.cpp $(FLEX_CTR_DIR)/flow_counter_handler.cpp $(FLEX_CTR_DIR)/flowcounterrouteorch.cpp
 tests_SOURCES += $(DEBUG_CTR_DIR)/debug_counter.cpp $(DEBUG_CTR_DIR)/drop_counter.cpp

tests/mock_tests/copp_ut.cpp

@@ -4,34 +4,14 @@
 #include "warm_restart.h"
 #include "ut_helper.h"
 #include "coppmgr.h"
-#include "coppmgr.cpp"
 #include <fstream>
 #include <streambuf>
+
 using namespace std;
 using namespace swss;
 
-void create_init_file()
-{
-    int status = system("sudo mkdir /etc/sonic/");
-    ASSERT_EQ(status, 0);
-
-    status = system("sudo chmod 777 /etc/sonic/");
-    ASSERT_EQ(status, 0);
-    
-    status = system("sudo cp copp_cfg.json /etc/sonic/");
-    ASSERT_EQ(status, 0);
-}
-
-void cleanup()
-{
-    int status = system("sudo rm -rf /etc/sonic/");
-    ASSERT_EQ(status, 0);
-}
-
 TEST(CoppMgrTest, CoppTest)
 {
-    create_init_file();
-
     const vector<string> cfg_copp_tables = {
                 CFG_COPP_TRAP_TABLE_NAME,
                 CFG_COPP_GROUP_TABLE_NAME,
@@ -65,12 +45,10 @@ TEST(CoppMgrTest, CoppTest)
                     {"trap_ids", "ip2me"}
                 });
 
-    CoppMgr coppmgr(&cfgDb, &appDb, &stateDb, cfg_copp_tables);
+    CoppMgr coppmgr(&cfgDb, &appDb, &stateDb, cfg_copp_tables, "./copp_cfg.json");
 
     string overide_val;
     coppTable.hget("queue1_group1", "cbs",overide_val);
     EXPECT_EQ( overide_val, "6000");
-
-    cleanup();
 }