tests/extmod/vfs_posix.py: Add more tests for VfsPosix class.

Signed-off-by: Damien George <damien@micropython.org>

tests/extmod/vfs_posix.py

@@ -8,11 +8,11 @@ except (ImportError, AttributeError):
     print("SKIP")
     raise SystemExit
 
-# We need a file for testing that doesn't already exist.
+# We need a directory for testing that doesn't already exist.
 # Skip the test if it does exist.
-temp_file = "micropy_test_file.txt"
+temp_dir = "micropy_test_dir"
 try:
-    uos.stat(temp_file)
+    uos.stat(temp_dir)
     print("SKIP")
     raise SystemExit
 except OSError:
@@ -31,18 +31,58 @@ print(type(uos.stat("/")))
 # listdir and ilistdir
 print(type(uos.listdir("/")))
 
+# mkdir
+uos.mkdir(temp_dir)
+
 # file create
-f = open(temp_file, "w")
+f = open(temp_dir + "/test", "w")
 f.write("hello")
 f.close()
 
 # close on a closed file should succeed
 f.close()
 
+# construct a file object using the type constructor, with a raw fileno
+f = type(f)(2)
+print(f)
+
 # file read
-f = open(temp_file, "r")
+f = open(temp_dir + "/test", "r")
 print(f.read())
 f.close()
 
+# rename
+uos.rename(temp_dir + "/test", temp_dir + "/test2")
+print(uos.listdir(temp_dir))
+
+# construct new VfsPosix with path argument
+vfs = uos.VfsPosix(temp_dir)
+print(list(i[0] for i in vfs.ilistdir(".")))
+
+# stat, statvfs
+print(type(vfs.stat(".")))
+print(type(vfs.statvfs(".")))
+
+# check types of ilistdir with str/bytes arguments
+print(type(list(vfs.ilistdir("."))[0][0]))
+print(type(list(vfs.ilistdir(b"."))[0][0]))
+
 # remove
-uos.remove(temp_file)
+uos.remove(temp_dir + "/test2")
+print(uos.listdir(temp_dir))
+
+# remove with error
+try:
+    uos.remove(temp_dir + "/test2")
+except OSError:
+    print("remove OSError")
+
+# rmdir
+uos.rmdir(temp_dir)
+print(temp_dir in uos.listdir())
+
+# rmdir with error
+try:
+    uos.rmdir(temp_dir)
+except OSError:
+    print("rmdir OSError")

tests/extmod/vfs_posix.py.exp

@@ -2,4 +2,15 @@
 True
 <class 'tuple'>
 <class 'list'>
+<io.TextIOWrapper 2>
 hello
+['test2']
+['test2']
+<class 'tuple'>
+<class 'tuple'>
+<class 'str'>
+<class 'bytes'>
+[]
+remove OSError
+False
+rmdir OSError