Add test case for FUSE bug

1 files changed, 59 insertions, 0 deletions

diff --git a/mkdata b/mkdata
new file mode 100755
index 00000000..0e115338
--- /dev/null
+++ b/mkdata
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+# Copyright 2014  Lars Wirzenius
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+#
+# =*= License: GPL-3+ =*=
+
+
+'''Create files of specified size, filled with junk.'''
+
+
+import os
+
+import cliapp
+
+
+class MakeData(cliapp.Application):
+
+    def add_settings(self):
+        self.settings.bytesize(
+            ['size'],
+            'how large a file to generate',
+            default=0)
+
+    def process_args(self, filenames):
+        for filename in filenames:
+            self.create_file(filename, self.settings['size'])
+
+    def create_file(self, filename, size):
+        self.create_parent_directory(filename)
+        with open(filename, 'w') as f:
+            self.write_data(f, size)
+
+    def create_parent_directory(self, filename):
+        dirname = os.path.dirname(filename)
+        if not os.path.exists(dirname):
+            os.makedirs(dirname)
+
+    def write_data(self, f, size):
+        chunk = 'x' * 2**20
+        written = 0
+        while written < size:
+            n = min(len(chunk), size - written)
+            f.write(chunk[:n])
+            written += n
+
+
+MakeData().run()