OVM Test Example for testbench :

`ifndef __MEM_TEST_LIB
`define __MEM_TEST_LIB

class mem_base_test extends ovm_test;

    `ovm_component_utils(mem_base_test)

    mem_tb mem_tb_inst0;
    ovm_table_printer printer;

    function new (string name="mem_base_test", ovm_component parent=null);
        super.new (name, parent);
    endfunction : new 

    virtual function void build();
        super.build();
        //set_config_string("*.m_sequencer", "default_sequence", "simple_seq");
        // Enable transaction recording for everything
         set_config_int("*", "recording_detail", OVM_FULL);
        mem_tb_inst0 = mem_tb::type_id::create("mem_tb", this);
        // Create a specific depth printer for printing the created topology
        // set_config_string("mem_tb_inst0.m_env0.m_sequencer", "default_sequence", "simple_seq");
        printer = new();
        printer.knobs.depth = 3;
    endfunction : build

    task run ();
        mem_tb_inst0.m_env0.m_sequencer.default_sequence = "simple_seq";
        $display("SEQUENCER : Puneet \n");
        mem_tb_inst0.m_env0.m_sequencer.print();
        #10000;
        ovm_report_info(get_type_name(),"Calling global_stop_request() to end the run phase", OVM_LOW);
        global_stop_request();
    endtask : run 

    function void end_of_elaboration();
        // Set verbosity for the bus monitor 
        mem_tb_inst0.m_env0.m_monitor.set_report_verbosity_level(OVM_FULL);
        ovm_report_info(get_type_name(), $psprintf("Printing the test topology :\n%s", this.sprint(printer)), OVM_LOW);
    endfunction : end_of_elaboration



endclass : mem_base_test


class mem_read_write_test extends mem_base_test;

    `ovm_component_utils(mem_read_write_test)

    function new (string name="mem_read_write_test", ovm_component parent=null);
        super.new (name, parent);
    endfunction : new 

    virtual function void build ();
        set_config_string("mem_tb_inst0.m_env0.m_sequencer", "default_sequence", "ovm_random_sequence");
        super.build();
        ovm_report_info(get_type_name(),"INSIDE mem_read_write_test BUILD METHOD", OVM_LOW);
     endfunction : build

    task run ();
        ovm_report_info(get_type_name(),"INSIDE mem_read_write_test RUN METHOD", OVM_LOW);
        #2000;
        ovm_report_info(get_type_name(),"Calling global_stop_request() to end the run phase", OVM_LOW);
        global_stop_request();
    endtask : run 

endclass : mem_read_write_test

class mem_bitwalk_test extends mem_base_test;

    `ovm_component_utils(mem_bitwalk_test)

    function new (string name="mem_bitwalk_test", ovm_component parent=null);
        super.new (name, parent);
    endfunction : new 

    virtual function void build ();
        set_config_string("mem_tb_inst0.m_env0.m_sequencer", "default_sequence", "mem_bit_walk_seq");
        super.build();
    endfunction : build

    task run ();
        #2000;
        ovm_report_info(get_type_name(),"Calling global_stop_request() to end the run phase", OVM_LOW);
        global_stop_request();
    endtask : run

endclass : mem_bitwalk_test


// Boundry Value Check
class mem_boundry_val_test extends mem_base_test;

    `ovm_component_utils(mem_boundry_val_test)

    function new(string name = "mem_boundry_val_test", ovm_component parent=null);
        super.new(name,parent);
    endfunction : new

    virtual function void build();
        // Create the tb
        super.build();
        // Set the default sequence for the master and slave
        //set_config_string("*.m_sequencer", "default_sequence", "mem_boundry_val_seq");
        set_config_string("mem_tb_inst0.m_env0.m_sequencer", "default_sequence", "mem_boundry_val_seq");
    endfunction : build
    
    task run ();
        mem_tb_inst0.m_env0.m_sequencer.default_sequence = "mem_boundry_val_seq";
        $display("SEQUENCER : Puneet \n");
        mem_tb_inst0.m_env0.m_sequencer.print();
        ovm_report_info(get_type_name(),"STARTING mem_boundry_val_test : Puneet ", OVM_LOW);
        #2000;
        ovm_report_info(get_type_name(),"Calling global_stop_request() to end the run phase", OVM_LOW);
        global_stop_request();
    endtask : run

endclass : mem_boundry_val_test

`endif //__MEM_TEST_LIB

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