add class_hid_keyboard_init and test code

add define _TINY_USB_SOURCE_FILE_ to hide internal API from application

tests/project.yml

@@ -48,6 +48,7 @@
     - MCU=MCU_LPC43XX
     - CORE_M4
     - __CODE_RED
+    - _TINY_USB_SOURCE_FILE_
   :test_preprocess:
     - *common_defines
     - _TEST_

tests/test/host/test_hid_host_keyboard.c

@@ -90,7 +90,7 @@ void tearDown(void)
 }
 
 //--------------------------------------------------------------------+
-// keyboard_install, keyboard_no_instances
+// keyboard_install, keyboard_no_instances, keybaord_init
 //--------------------------------------------------------------------+
 void test_keyboard_no_instances_invalid_para(void)
 {
@@ -107,6 +107,16 @@ void test_keyboard_install_ok(void)
   TEST_ASSERT_EQUAL(1, tusbh_hid_keyboard_no_instances(device_hdl));
 }
 
+void test_keyboard_init(void)
+{
+  class_hid_keyboard_info_t keyboard_info_zero[TUSB_CFG_HOST_DEVICE_MAX];
+  memset(&keyboard_info_zero, 0, sizeof(class_hid_keyboard_info_t)*TUSB_CFG_HOST_DEVICE_MAX);
+
+  class_hid_keyboard_init();
+
+  TEST_ASSERT_EQUAL_MEMORY(keyboard_info_zero, keyboard_info_pool, sizeof(class_hid_keyboard_info_t)*TUSB_CFG_HOST_DEVICE_MAX);
+}
+
 //--------------------------------------------------------------------+
 // keyboard_get
 //--------------------------------------------------------------------+