add unit tests for file-like object methods and update changelog and docs

2 files changed, 25 insertions, 3 deletions

diff --git a/tests/test_file.py b/tests/test_file.py
index a6ff69e9..7fab6985 100755
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -70,9 +70,9 @@ class BufferedFileTest (unittest.TestCase):
 
     def test_2_readline(self):
         f = LoopbackFile('r+U')
-        f.write(b'First line.\nSecond line.\r\nThird line.\n' + 
+        f.write(b'First line.\nSecond line.\r\nThird line.\n' +
                 b'Fourth line.\nFinal line non-terminated.')
-        
+
         self.assertEqual(f.readline(), 'First line.\n')
         # universal newline mode should convert this linefeed:
         self.assertEqual(f.readline(), 'Second line.\n')
@@ -165,7 +165,28 @@ class BufferedFileTest (unittest.TestCase):
             f.write(buffer(b'Too small.'))
             f.close()
 
+    def test_9_readable(self):
+        f = LoopbackFile('r')
+        self.assertTrue(f.readable())
+        self.assertFalse(f.writable())
+        self.assertFalse(f.seekable())
+        f.close()
+
+    def test_A_writable(self):
+        f = LoopbackFile('w')
+        self.assertTrue(f.writable())
+        self.assertFalse(f.readable())
+        self.assertFalse(f.seekable())
+        f.close()
+
+    def test_B_readinto(self):
+        data = bytearray(5)
+        f = LoopbackFile('r+')
+        f._write(b"hello")
+        f.readinto(data)
+        self.assertEqual(data, b'hello')
+        f.close()
+
 if __name__ == '__main__':
     from unittest import main
     main()
-
diff --git a/tests/test_sftp.py b/tests/test_sftp.py
index cb8f7f84..b1829b4c 100755
--- a/tests/test_sftp.py
+++ b/tests/test_sftp.py
@@ -429,6 +429,7 @@ class SFTPTest (unittest.TestCase):
                     line_number += 1
                     pos_list.append(loc)
                     loc = f.tell()
+                self.assertTrue(f.seekable())
                 f.seek(pos_list[6], f.SEEK_SET)
                 self.assertEqual(f.readline(), 'Nouzilly, France.\n')
                 f.seek(pos_list[17], f.SEEK_SET)