testing: add open_memstream test tool

Test tool application for open_memstream for CI testing. Performs basic
write/seek operations.

Signed-off-by: Michal Lenc <michallenc@seznam.cz>

testing/open_memstream/Kconfig

@@ -0,0 +1,13 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+config TESTING_OPEN_MEMSTREAM
+	tristate "open_memstream test tool"
+	default n
+	---help---
+		Performs a basic operations with open_memstream call.
+
+if TESTING_OPEN_MEMSTREAM
+endif

testing/open_memstream/Make.defs

@@ -0,0 +1,23 @@
+############################################################################
+# apps/testing/open_memstream/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+ifneq ($(CONFIG_TESTING_OPEN_MEMSTREAM),)
+CONFIGURED_APPS += $(APPDIR)/testing/open_memstream
+endif

testing/open_memstream/Makefile

@@ -0,0 +1,32 @@
+############################################################################
+# apps/testing/open_memstream/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(APPDIR)/Make.defs
+
+# SMART filesystem test tool
+
+PROGNAME = open_memstream_test
+PRIORITY = SCHED_PRIORITY_DEFAULT
+STACKSIZE = 4096
+MODULE = $(CONFIG_TESTING_FMEMOPEN_TEST)
+
+MAINSRC = open_memstream.c
+
+include $(APPDIR)/Application.mk

testing/open_memstream/open_memstream.c

@@ -0,0 +1,219 @@
+/****************************************************************************
+ * apps/testing/open_memstream/open_memstream.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private data
+ ****************************************************************************/
+
+static char correctbuf[] = "abcdefghijklmnopqrstuvwxyz";
+static char correctbuf_seek[] = "123defghijklmnopqrstuvw456";
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: open_memstream_write_test
+ ****************************************************************************/
+
+static int open_memstream_write_test(void)
+{
+  FILE *stream;
+  char *buf;
+  size_t len;
+  ssize_t size;
+  int i;
+
+  size = strlen(correctbuf);
+  stream = open_memstream(&buf, &len);
+  if (stream == NULL)
+    {
+      printf("open_memstream_write_test: open_memstream failed %d\n",
+             -errno);
+      return -1;
+    }
+
+  fprintf(stream, "%s", correctbuf);
+  fflush(stream);
+
+  /* Check whether values are updated after flush. */
+
+  if (len != size)
+    {
+      printf("open_memstream_write_test: len (%zu) != size (%zu)\n", len,
+              size);
+      fclose(stream);
+      free(buf);
+      return -1;
+    }
+
+  for (i = 0; i < len; i++)
+    {
+      if (buf[i] != correctbuf[i])
+        {
+          printf("open_memstream_write_test: error %d got %c, expected %c\n",
+                  i, buf[i], correctbuf[i]);
+          fclose(stream);
+          free(buf);
+          return -1;
+        }
+    }
+
+  fclose (stream);
+  if (len != size)
+    {
+      printf("open_memstream_write_test: len (%zu) != size (%zu)\n", len,
+              size);
+      free(buf);
+      return -1;
+    }
+
+  for (i = 0; i < len; i++)
+    {
+      if (buf[i] != correctbuf[i])
+        {
+          printf("open_memstream_write_test: error %d got %c, expected %c\n",
+                  i, buf[i], correctbuf[i]);
+          free(buf);
+          return -1;
+        }
+    }
+
+  free(buf);
+  printf("open_memstream_write_test: successful\n");
+  return 0;
+}
+
+/****************************************************************************
+ * Name: open_memstream_seek_test
+ ****************************************************************************/
+
+static int open_memstream_seek_test(void)
+{
+  FILE *stream;
+  char *buf;
+  size_t len;
+  off_t end_pos;
+  ssize_t size;
+  int i;
+
+  size = strlen(correctbuf);
+
+  stream = open_memstream(&buf, &len);
+  if (stream == NULL)
+    {
+      printf("open_memstream_seek_test: open_memstream failed %d\n", -errno);
+      return -1;
+    }
+
+  fprintf(stream, "%s", correctbuf);
+  fflush(stream);
+  end_pos = ftello(stream);
+  fseeko(stream, 0, SEEK_SET);
+  fprintf(stream, "123");
+  fseeko(stream, end_pos, SEEK_SET);
+
+  fseeko(stream, -3, SEEK_END);
+  fprintf(stream, "456");
+  fseeko(stream, end_pos, SEEK_SET);
+
+  fclose(stream);
+
+  if (len != size)
+    {
+      printf("open_memstream_seek_test: len (%zu) != size (%zu)\n", len,
+              size);
+      free(buf);
+      return -1;
+    }
+
+  for (i = 0; i < len; i++)
+    {
+      if (buf[i] != correctbuf_seek[i])
+        {
+          printf("open_memstream_seek_test: error %d got %c, expected %c\n",
+                  i, buf[i], correctbuf_seek[i]);
+          free(buf);
+          return -1;
+        }
+    }
+
+  free(buf);
+  printf("open_memstream_seek_test: successful\n");
+  return 0;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int main(int argc, FAR char *argv[])
+{
+  int ret;
+  int tests_ok;
+  int tests_err;
+
+  tests_ok = tests_err = 0;
+
+  /* Run tests. They should return 0 on success, -1 otherwise. */
+
+  ret = open_memstream_write_test();
+  if (ret < 0)
+    {
+      tests_err += 1;
+    }
+  else
+    {
+      tests_ok += 1;
+    }
+
+  ret = open_memstream_seek_test();
+  if (ret < 0)
+    {
+      tests_err += 1;
+    }
+  else
+    {
+      tests_ok += 1;
+    }
+
+  printf("open_memstream tests: SUCCESSFUL: %d; FAILED: %d\n", tests_ok,
+          tests_err);
+
+  return 0;
+}