[components][utest] utest_run 增加 loop 功能，方便持续运行单一一个测试用例；

[components][utest] utest_run 指定测试用例名字的时候，增加通配符 `*` 的支持，及支持仅指定测试用例名字的前部分字节来运行测试用例。该功能会执行匹配成功的所有测试用例。
Signed-off-by: NMurphyZhao <d2014zjt@163.com>

components/utilities/utest/utest.c

@@ -10,6 +10,8 @@
 
 #include <rtthread.h>
 #include <string.h>
+#include <stdlib.h>
+
 #include "utest.h"
 #include <utest_log.h>
 
@@ -47,6 +49,7 @@
 static rt_uint8_t utest_log_lv = UTEST_LOG_ALL;
 static utest_tc_export_t tc_table = RT_NULL;
 static rt_size_t tc_num;
+static rt_uint32_t tc_loop;
 static struct utest local_utest = {UTEST_PASSED, 0, 0};
 
 #if defined(__ICCARM__) || defined(__ICCRX__)         /* for IAR compiler */
@@ -118,18 +121,30 @@ static const char *file_basename(const char *file)
 
 static void utest_run(const char *utest_name)
 {
-    rt_size_t i = 0;
+    rt_size_t i;
+    rt_uint32_t index;
 
     rt_thread_mdelay(1000);
 
+    for (index = 0; index < tc_loop; index ++)
+    {
+        i = 0;
         LOG_I("[==========] [ utest    ] started");
         while(i < tc_num)
         {
-        if (utest_name && rt_strcmp(utest_name, tc_table[i].name))
+            if (utest_name)
+            {
+                int len = strlen(utest_name);
+                if (utest_name[len - 1] == '*')
+                {
+                    len -= 1;
+                }
+                if (rt_memcmp(tc_table[i].name, utest_name, len) != 0)
                 {
                     i++;
                     continue;
                 }
+            }
 
             LOG_I("[----------] [ testcase ] (%s) started", tc_table[i].name);
             if (tc_table[i].init != RT_NULL)
@@ -167,12 +182,13 @@ static void utest_run(const char *utest_name)
                 }
             }
 
-__tc_continue:
+    __tc_continue:
             LOG_I("[----------] [ testcase ] (%s) finished", tc_table[i].name);
 
             i++;
         }
         LOG_I("[==========] [ utest    ] finished");
+    }
 }
 
 static void utest_testcase_run(int argc, char** argv)
@@ -182,20 +198,24 @@ static void utest_testcase_run(int argc, char** argv)
     static char utest_name[UTEST_NAME_MAX_LEN];
     rt_memset(utest_name, 0x0, sizeof(utest_name));
 
+    tc_loop = 1;
+
     if (argc == 1)
     {
         utest_run(RT_NULL);
         return;
     }
-    else if (argc == 2 || argc == 3)
+    else if (argc == 2 || argc == 3 || argc == 4)
     {
         if (rt_strcmp(argv[1], "-thread") == 0)
         {
             rt_thread_t tid = RT_NULL;
-            if (argc == 3)
+            if (argc == 3 || argc == 4)
             {
                 rt_strncpy(utest_name, argv[2], sizeof(utest_name) -1);
                 thr_param = (void*)utest_name;
+
+                if (argc == 4) tc_loop = atoi(argv[3]);
             }
             tid = rt_thread_create("utest",
                                     (void (*)(void *))utest_run, thr_param,
@@ -208,6 +228,7 @@ static void utest_testcase_run(int argc, char** argv)
         else
         {
             rt_strncpy(utest_name, argv[1], sizeof(utest_name) -1);
+            if (argc == 3) tc_loop = atoi(argv[2]);
             utest_run(utest_name);
         }
     }