fix issue

test/script/fieldBasic.exp

+>> Usage:
+>> 3
+>> 'a,b,c'
+>> output.txt
+>> '1,3,5'
\ No newline at end of file

test/script/fieldBasic.php

+#!/usr/bin/env php
+<?php
+/**
+[case]
+title=basic
+cid=0
+pid=0
+
+[group]
+  1. usage output >>
+  2. basic output >>
+  3. step output >>
+
+[esac]
+*/
+
+$output = [];
+exec('./zd-mac -h', $output);
+print(">> $output[0]\n");
+
+$output = [];
+exec('./zd-mac -y ../test/definition/basic.yaml -c 3 -field basic -o ../test/output/output.txt -f text', $output);
+$count = sprintf("%d", count($output));
+print(">> $count\n");
+print(">> $output[0]\n");
+
+$output = [];
+exec('ls ../test/output/output.txt -f text', $output);
+print(">> $output[0]\n");
+
+$output = [];
+exec('./zd-mac -y ../test/definition/basic.yaml -c 7 -field step -o ../test/output/output.txt -f text', $output);
+print(">> $output[0]\n");
\ No newline at end of file

test/script/fieldFormat.exp

+>> 2, 1.100, char is c
\ No newline at end of file

test/script/fieldFormat.php

+#!/usr/bin/env php
+<?php
+/**
+[case]
+title=defferent data type with format
+cid=0
+pid=0
+
+[group]
+  1. defferent data type with format >>
+
+[esac]
+*/
+
+$output = [];
+exec('./zd-mac -y ../test/definition/format.yaml -c 3 -field int,float,char -o ../test/output/output.txt -f text', $output);
+print(">> $output[1]\n");
\ No newline at end of file

test/script/fieldInherit.exp

+>> {a b}
+>> ='1,2' '3,4'-
\ No newline at end of file

test/script/fieldInherit.php

+#!/usr/bin/env php
+<?php
+/**
+[case]
+title=field
+cid=0
+pid=0
+
+[group]
+  1. inherit from basic field >>
+  2. inherit from reference field >>
+[esac]
+*/
+
+$output = [];
+exec('./zd-mac -d ../test/definition/basic.yaml  -y ../test/definition/inherit.yaml -c 3 -field basic -o ../test/output/output.txt -f text', $output);
+print(">> $output[0]\n");
+
+$output = [];
+exec('./zd-mac -d ../test/definition/refer.yaml  -y ../test/definition/inherit.yaml -c 3 -field refer2 -o ../test/output/output.txt -f text', $output);
+print(">> $output[0]\n");
\ No newline at end of file

test/script/fieldOverwrite.exp

+>> '192.168.0.1-192.168.1.2'
\ No newline at end of file

test/script/fieldRandom.exp

+>> 6
+>> is random
\ No newline at end of file

test/script/fieldRandom.php

+#!/usr/bin/env php
+<?php
+/**
+[case]
+title=random
+cid=0
+pid=0
+
+[group]
+  1. output >>
+
+[esac]
+*/
+
+$output = [];
+exec('./zd-mac -y ../test/definition/basic.yaml -c 7 -field random -o ../test/output/output.txt -f text', $output);
+$line = $output[0];
+print("Got $line\n");
+
+// 1,2,2,2,8,1
+$numbs = explode(",", $line);
+$count = sprintf("%d", count($numbs));
+print(">> $count\n");
+
+$result = 'not random';
+$i = 0;
+for($i = 0; $i < $count; $i++) {
+  if ($numbs[$i] != $i + 1) { // at lease one not equal sequence numb 1,2,3,4,5,6
+    $result = 'is random';
+    break;
+  }
+}
+print(">> $result\n");
\ No newline at end of file

test/script/fieldRefer.exp

+>> '192.168.0.1-192.168.1.2'
\ No newline at end of file

test/script/fieldRefer.php

+#!/usr/bin/env php
+<?php
+/**
+[case]
+title=reference
+cid=0
+pid=0
+
+[group]
+  1. output >>
+
+[esac]
+*/
+
+$output = [];
+exec('./zd-mac -y ../test/definition/refer.yaml -c 7 -field refer -o ../test/output/output.txt -f text', $output);
+print(">> $output[0]\n");
\ No newline at end of file