1 files changed, 98 insertions, 0 deletions
diff --git a/tests/nvme_test_io.py b/tests/nvme_test_io.py
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+++ b/tests/nvme_test_io.py
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+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (c) 2015-2016 Western Digital Corporation or its affiliates.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA  02110-1301, USA.
+#
+#   Author: Chaitanya Kulkarni <chaitanya.kulkarni@hgst.com>
+#
+""" Inherit TestNVMeIO for nvme read/write operations """
+
+import os
+
+from nvme_test import TestNVMe
+
+
+class TestNVMeIO(TestNVMe):
+
+    """
+    Variable and Methods required to perform nvme read/write.
+
+        - Attributes:
+              - data_size : data size to perform IO.
+              - start_block : starting block of to perform IO.
+              - block_count : Number of blocks to use in IO.
+              - write_file : data file to use in nvme write command.
+              - read_file : data file to use in nvme read command.
+    """
+
+    def setUp(self):
+        """ Pre Section for TestNVMeIO """
+        super().setUp()
+        # common code used in various testcases.
+        self.data_size = 512
+        self.start_block = 0
+        self.block_count = 0
+        self.write_file = "write_file.txt"
+        self.read_file = "read_file.txt"
+
+    def tearDown(self):
+        """ Post Section for TestNVMeIO """
+        super().tearDown()
+
+    def create_data_file(self, pathname, data_size, pattern):
+        """ Creates data file with specific pattern
+            - Args:
+                - pathname : data file path name.
+                - data_size : total size of the data.
+                - pattern : data pattern to create file.
+            - Returns:
+            None
+        """
+        pattern_len = len(pattern)
+        data_file = open(pathname, "w")
+        for i in range(0, data_size):
+            data_file.write(pattern[i % pattern_len])
+        data_file.flush()
+        os.fsync(data_file.fileno())
+        data_file.close()
+
+    def nvme_write(self):
+        """ Wrapper for nvme write operation
+            - Args:
+                - None
+            - Returns:
+                - return code for nvme write command.
+        """
+        write_cmd = "nvme write " + self.ns1 + " --start-block=" + \
+                    str(self.start_block) + " --block-count=" + \
+                    str(self.block_count) + " --data-size=" + \
+                    str(self.data_size) + " --data=" + self.write_file
+        return self.exec_cmd(write_cmd)
+
+    def nvme_read(self):
+        """ Wrapper for nvme read operation
+            - Args:
+                - None
+            - Returns:
+                - return code for nvme read command.
+        """
+        read_cmd = "nvme read " + self.ns1 + " --start-block=" + \
+                   str(self.start_block) + " --block-count=" + \
+                   str(self.block_count) + " --data-size=" + \
+                   str(self.data_size) + " --data=" + self.read_file
+        print(read_cmd)
+        return self.exec_cmd(read_cmd)