From 91731b656ab61760d9dd28dc441366cf1f6a256c Mon Sep 17 00:00:00 2001
From: helge <helgewurst@web.de>
Date: 周四, 04 11月 2021 21:25:20 +0800
Subject: [PATCH] add extern C

---
 libscpi/test/test_parser.c |   37 ++++++++++++++++++++++++++++++++++---
 1 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/libscpi/test/test_parser.c b/libscpi/test/test_parser.c
index 9026285..fc33a74 100644
--- a/libscpi/test/test_parser.c
+++ b/libscpi/test/test_parser.c
@@ -1,6 +1,29 @@
-/*
- * File:   test_parser.c
- * Author: Jan Breuer
+/*-
+ * BSD 2-Clause License
+ *
+ * Copyright (c) 2012-2018, Jan Breuer
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include <stdio.h>
@@ -242,6 +265,14 @@
     TEST_INPUT("\r\n", "MA,IN,0,VER\r\n");
     output_buffer_clear();
 
+    /* Test empty command at the beggining */
+    TEST_INPUT(";*IDN?\r\n", "MA,IN,0,VER\r\n");
+    output_buffer_clear();
+
+    TEST_INPUT(";", "");
+    TEST_INPUT("*IDN?\r\n", "MA,IN,0,VER\r\n");
+    output_buffer_clear();
+
     /* Test input "timeout" - input with length == 0 */
     TEST_INPUT("*IDN?", "");
     TEST_INPUT("", "MA,IN,0,VER\r\n");

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