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from __future__ import unicode_literals
import unittest
from fs import errors
from fs.memoryfs import MemoryFS
from fs.multifs import MultiFS
from fs.test import FSTestCases
class TestMultiFS(FSTestCases, unittest.TestCase):
"""Test OSFS implementation."""
def setUp(self):
fs = MultiFS()
mem_fs = MemoryFS()
fs.add_fs("mem", mem_fs, write=True)
self.fs = fs
self.mem_fs = mem_fs
def make_fs(self):
fs = MultiFS()
mem_fs = MemoryFS()
fs.add_fs("mem", mem_fs, write=True)
return fs
def test_get_fs(self):
self.assertIs(self.fs.get_fs("mem"), self.mem_fs)
def test_which(self):
self.fs.writebytes("foo", b"bar")
self.assertEqual(self.fs.which("foo"), ("mem", self.mem_fs))
self.assertEqual(self.fs.which("bar", "w"), ("mem", self.mem_fs))
self.assertEqual(self.fs.which("baz"), (None, None))
def test_auto_close(self):
"""Test MultiFS auto close is working"""
multi_fs = MultiFS()
m1 = MemoryFS()
m2 = MemoryFS()
multi_fs.add_fs("m1", m1)
multi_fs.add_fs("m2", m2)
self.assertFalse(m1.isclosed())
self.assertFalse(m2.isclosed())
multi_fs.close()
self.assertTrue(m1.isclosed())
self.assertTrue(m2.isclosed())
def test_no_auto_close(self):
"""Test MultiFS auto close can be disabled"""
multi_fs = MultiFS(auto_close=False)
self.assertEqual(repr(multi_fs), "MultiFS(auto_close=False)")
m1 = MemoryFS()
m2 = MemoryFS()
multi_fs.add_fs("m1", m1)
multi_fs.add_fs("m2", m2)
self.assertFalse(m1.isclosed())
self.assertFalse(m2.isclosed())
multi_fs.close()
self.assertFalse(m1.isclosed())
self.assertFalse(m2.isclosed())
def test_opener(self):
"""Test use of FS URLs."""
multi_fs = MultiFS()
with self.assertRaises(TypeError):
multi_fs.add_fs("foo", 5)
multi_fs.add_fs("f1", "mem://")
multi_fs.add_fs("f2", "temp://")
self.assertIsInstance(multi_fs.get_fs("f1"), MemoryFS)
def test_priority(self):
"""Test priority order is working"""
m1 = MemoryFS()
m2 = MemoryFS()
m3 = MemoryFS()
m1.writebytes("name", b"m1")
m2.writebytes("name", b"m2")
m3.writebytes("name", b"m3")
multi_fs = MultiFS(auto_close=False)
multi_fs.add_fs("m1", m1)
multi_fs.add_fs("m2", m2)
multi_fs.add_fs("m3", m3)
self.assertEqual(multi_fs.readbytes("name"), b"m3")
m1 = MemoryFS()
m2 = MemoryFS()
m3 = MemoryFS()
m1.writebytes("name", b"m1")
m2.writebytes("name", b"m2")
m3.writebytes("name", b"m3")
multi_fs = MultiFS(auto_close=False)
multi_fs.add_fs("m1", m1)
multi_fs.add_fs("m2", m2, priority=10)
multi_fs.add_fs("m3", m3)
self.assertEqual(multi_fs.readbytes("name"), b"m2")
m1 = MemoryFS()
m2 = MemoryFS()
m3 = MemoryFS()
m1.writebytes("name", b"m1")
m2.writebytes("name", b"m2")
m3.writebytes("name", b"m3")
multi_fs = MultiFS(auto_close=False)
multi_fs.add_fs("m1", m1)
multi_fs.add_fs("m2", m2, priority=10)
multi_fs.add_fs("m3", m3, priority=10)
self.assertEqual(multi_fs.readbytes("name"), b"m3")
m1 = MemoryFS()
m2 = MemoryFS()
m3 = MemoryFS()
m1.writebytes("name", b"m1")
m2.writebytes("name", b"m2")
m3.writebytes("name", b"m3")
multi_fs = MultiFS(auto_close=False)
multi_fs.add_fs("m1", m1, priority=11)
multi_fs.add_fs("m2", m2, priority=10)
multi_fs.add_fs("m3", m3, priority=10)
self.assertEqual(multi_fs.readbytes("name"), b"m1")
def test_no_writable(self):
fs = MultiFS()
with self.assertRaises(errors.ResourceReadOnly):
fs.writebytes("foo", b"bar")
def test_validate_path(self):
self.fs.write_fs = None
self.fs.validatepath("foo")
def test_listdir_duplicates(self):
m1 = MemoryFS()
m2 = MemoryFS()
m1.touch("foo")
m2.touch("foo")
multi_fs = MultiFS()
multi_fs.add_fs("m1", m1)
multi_fs.add_fs("m2", m2)
self.assertEqual(multi_fs.listdir("/"), ["foo"])
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