Import ossfs tests

This turns up a failure in test_rename_file when calling seek(0) on a
renamed file.

test/integration-test-main.sh

@@ -846,6 +846,12 @@ function test_cache_file_stat() {
     rm_test_file "${BIG_FILE}"
 }
 
+function test_ut_ossfs {
+    echo "Testing ossfs python ut..."
+    export TEST_BUCKET_MOUNT_POINT=$TEST_BUCKET_MOUNT_POINT_1
+    ../../ut_test.py
+}
+
 function add_all_tests {
     if `ps -ef | grep -v grep | grep s3fs | grep -q ensure_diskfree` && ! `uname | grep -q Darwin`; then
         add_tests test_clean_up_cache
@@ -884,6 +890,7 @@ function add_all_tests {
     add_tests test_write_multiple_offsets_backwards
     add_tests test_content_type
     add_tests test_truncate_cache
+    add_tests test_ut_ossfs
     if `ps -ef | grep -v grep | grep s3fs | grep -q use_cache`; then
         add_tests test_cache_file_stat
     fi

test/ut_test.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python2
+
+import os
+import unittest
+import ConfigParser
+import random
+import sys
+import time
+
+class OssfsUnitTest(unittest.TestCase):
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def random_string(self, len):
+        char_set = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g']
+        list = []
+        for i in range(0, len):
+            list.append(random.choice(char_set))
+        return "".join(list)
+
+    def test_read_file(self):
+        filename = "%s" % (self.random_string(10))
+        print filename
+
+        f = open(filename, 'w')
+        data = self.random_string(1000)
+        f.write(data)
+        f.close()
+
+        f = open(filename, 'r')
+        data = f.read(100)
+        self.assertEqual(len(data), 100)
+        data = f.read(100)
+        self.assertEqual(len(data), 100)
+        f.close()
+
+    def test_rename_file(self):
+        filename1 = "%s" % (self.random_string(10))
+        filename2 = "%s" % (self.random_string(10))
+        print filename1, filename2
+
+        f = open(filename1, 'w+')
+        data1 = self.random_string(1000)
+        f.write(data1)
+
+        os.rename(filename1, filename2)
+
+        f.seek(0, 0)
+        data2 = f.read()
+        f.close()
+
+        self.assertEqual(len(data1), len(data2))
+        self.assertEqual(data1, data2)
+
+    def test_rename_file2(self):
+        filename1 = "%s" % (self.random_string(10))
+        filename2 = "%s" % (self.random_string(10))
+        print filename1, filename2
+
+        f = open(filename1, 'w')
+        data1 = self.random_string(1000)
+        f.write(data1)
+        f.close()
+
+        os.rename(filename1, filename2)
+
+        f = open(filename2, 'r')
+        f.seek(0, 0)
+        data2 = f.read()
+        f.close()
+
+        self.assertEqual(len(data1), len(data2))
+        self.assertEqual(data1, data2)
+
+
+if __name__ == '__main__':
+    unittest.main()
+