The Test is selected at runtime using +UVM_TESTNAME=my_test.
class my_test extends uvm_test;
`uvm_component_utils(my_test)
my_env env;
function new(string name, uvm_component parent);
super.new(name, parent);
endfunction
function void build_phase(uvm_phase phase);
super.build_phase(phase);
env = my_env::type_id::create("env", this);
endfunction
task run_phase(uvm_phase phase);
my_sequence seq;
seq = my_sequence::type_id::create("seq");
phase.raise_objection(this);
seq.start(env.agent.sqr);
phase.drop_objection(this);
endtask
endclass