From: David Schleef <ds@schleef.org>
Date: Thu, 6 Jun 2002 00:38:54 +0000 (+0000)
Subject: test reading 0 samples
X-Git-Tag: r0_7_19~19
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=1303b4758ce6872f5a47498922e4f79dfbbda312;p=comedilib.git

test reading 0 samples
---

diff --git a/testing/insn_read.c b/testing/insn_read.c
index 0d347eb..285cbd4 100644
--- a/testing/insn_read.c
+++ b/testing/insn_read.c
@@ -58,3 +58,39 @@ int test_insn_read(void)
 	return 0;
 }
 
+/*
+ * This function tests reading with n=0.
+ */
+int test_insn_read_0(void)
+{
+	comedi_insn it;
+	lsampl_t data = 0xffffffff;
+	int ret;
+	int type;
+
+	type = comedi_get_subdevice_type(device,subdevice);
+	if(type==COMEDI_SUBD_UNUSED){
+		printf("not applicable\n");
+		return 0;
+	}
+
+	memset(&it,0,sizeof(it));
+	it.subdev = subdevice;
+	it.insn = INSN_READ;
+	it.n = 0;
+	it.chanspec = CR_PACK(0,0,0);
+	it.data = &data;
+
+	ret = comedi_do_insn(device,&it);
+
+	if(ret<0){
+		printf("E: comedi_do_insn: %s\n",strerror(errno));
+	}else if(ret==0){
+		printf("comedi_do_insn returned 0, good\n");
+	}else{
+		printf("E: comedi_do_insn returned %d\n",ret);
+	}
+
+	return 0;
+}
+
diff --git a/testing/main.c b/testing/main.c
index d6f3945..3f838c4 100644
--- a/testing/main.c
+++ b/testing/main.c
@@ -26,6 +26,7 @@ int range;
 int test_info(void);
 int test_mode0_read(void);
 int test_insn_read(void);
+int test_insn_read_0(void);
 int test_insn_read_time(void);
 int test_cmd_no_cmd(void);
 int test_cmd_probe_src_mask(void);
@@ -52,6 +53,7 @@ struct test_struct tests[]={
 	{ "info", test_info, TEST_STD },
 	{ "mode0_read", test_mode0_read, TEST_NEVER },
 	{ "insn_read", test_insn_read, TEST_STD },
+	{ "insn_read_0", test_insn_read_0, TEST_STD },
 	{ "insn_read_time", test_insn_read_time, TEST_STD },
 	{ "cmd_no_cmd", test_cmd_no_cmd, TEST_STD },
 	{ "cmd_probe_src_mask", test_cmd_probe_src_mask, TEST_STD },