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from __future__ import unicode_literals
import six
import unittest
from fs import walk
from fs.errors import FSError
from fs.memoryfs import MemoryFS
from fs.wrap import read_only
class TestWalker(unittest.TestCase):
def setUp(self):
self.walker = walk.Walker()
def test_repr(self):
repr(self.walker)
def test_create(self):
with self.assertRaises(ValueError):
walk.Walker(ignore_errors=True, on_error=lambda path, error: True)
walk.Walker(ignore_errors=True)
class TestWalk(unittest.TestCase):
def setUp(self):
self.fs = MemoryFS()
self.fs.makedir("foo1")
self.fs.makedir("foo2")
self.fs.makedir("foo3")
self.fs.create("foo1/top1.txt")
self.fs.create("foo1/top2.txt")
self.fs.makedir("foo1/bar1")
self.fs.makedir("foo2/bar2")
self.fs.makedir("foo2/bar2/bar3")
self.fs.create("foo2/bar2/bar3/test.txt")
self.fs.create("foo2/top3.bin")
def test_invalid(self):
with self.assertRaises(ValueError):
self.fs.walk(search="random")
def test_repr(self):
repr(self.fs.walk)
def test_walk(self):
_walk = []
for step in self.fs.walk():
self.assertIsInstance(step, walk.Step)
path, dirs, files = step
_walk.append(
(path, [info.name for info in dirs], [info.name for info in files])
)
expected = [
("/", ["foo1", "foo2", "foo3"], []),
("/foo1", ["bar1"], ["top1.txt", "top2.txt"]),
("/foo2", ["bar2"], ["top3.bin"]),
("/foo3", [], []),
("/foo1/bar1", [], []),
("/foo2/bar2", ["bar3"], []),
("/foo2/bar2/bar3", [], ["test.txt"]),
]
self.assertEqual(_walk, expected)
def test_walk_filter_dirs(self):
_walk = []
for step in self.fs.walk(filter_dirs=["foo*"]):
self.assertIsInstance(step, walk.Step)
path, dirs, files = step
_walk.append(
(path, [info.name for info in dirs], [info.name for info in files])
)
expected = [
("/", ["foo1", "foo2", "foo3"], []),
("/foo1", [], ["top1.txt", "top2.txt"]),
("/foo2", [], ["top3.bin"]),
("/foo3", [], []),
]
self.assertEqual(_walk, expected)
def test_walk_depth(self):
_walk = []
for step in self.fs.walk(search="depth"):
self.assertIsInstance(step, walk.Step)
path, dirs, files = step
_walk.append(
(path, [info.name for info in dirs], [info.name for info in files])
)
expected = [
("/foo1/bar1", [], []),
("/foo1", ["bar1"], ["top1.txt", "top2.txt"]),
("/foo2/bar2/bar3", [], ["test.txt"]),
("/foo2/bar2", ["bar3"], []),
("/foo2", ["bar2"], ["top3.bin"]),
("/foo3", [], []),
("/", ["foo1", "foo2", "foo3"], []),
]
self.assertEqual(_walk, expected)
def test_walk_directory(self):
_walk = []
for step in self.fs.walk("foo2"):
self.assertIsInstance(step, walk.Step)
path, dirs, files = step
_walk.append(
(path, [info.name for info in dirs], [info.name for info in files])
)
expected = [
("/foo2", ["bar2"], ["top3.bin"]),
("/foo2/bar2", ["bar3"], []),
("/foo2/bar2/bar3", [], ["test.txt"]),
]
self.assertEqual(_walk, expected)
def test_walk_levels_1(self):
results = list(self.fs.walk(max_depth=1))
self.assertEqual(len(results), 1)
dirs = sorted(info.name for info in results[0].dirs)
self.assertEqual(dirs, ["foo1", "foo2", "foo3"])
files = sorted(info.name for info in results[0].files)
self.assertEqual(files, [])
def test_walk_levels_1_depth(self):
results = list(self.fs.walk(max_depth=1, search="depth"))
self.assertEqual(len(results), 1)
dirs = sorted(info.name for info in results[0].dirs)
self.assertEqual(dirs, ["foo1", "foo2", "foo3"])
files = sorted(info.name for info in results[0].files)
self.assertEqual(files, [])
def test_walk_levels_2(self):
_walk = []
for step in self.fs.walk(max_depth=2):
self.assertIsInstance(step, walk.Step)
path, dirs, files = step
_walk.append(
(
path,
sorted(info.name for info in dirs),
sorted(info.name for info in files),
)
)
expected = [
("/", ["foo1", "foo2", "foo3"], []),
("/foo1", ["bar1"], ["top1.txt", "top2.txt"]),
("/foo2", ["bar2"], ["top3.bin"]),
("/foo3", [], []),
]
self.assertEqual(_walk, expected)
def test_walk_files(self):
files = list(self.fs.walk.files())
self.assertEqual(
files,
[
"/foo1/top1.txt",
"/foo1/top2.txt",
"/foo2/top3.bin",
"/foo2/bar2/bar3/test.txt",
],
)
files = list(self.fs.walk.files(search="depth"))
self.assertEqual(
files,
[
"/foo1/top1.txt",
"/foo1/top2.txt",
"/foo2/bar2/bar3/test.txt",
"/foo2/top3.bin",
],
)
def test_walk_dirs(self):
dirs = list(self.fs.walk.dirs())
self.assertEqual(
dirs,
["/foo1", "/foo2", "/foo3", "/foo1/bar1", "/foo2/bar2", "/foo2/bar2/bar3"],
)
dirs = list(self.fs.walk.dirs(search="depth"))
self.assertEqual(
dirs,
["/foo1/bar1", "/foo1", "/foo2/bar2/bar3", "/foo2/bar2", "/foo2", "/foo3"],
)
dirs = list(self.fs.walk.dirs(search="depth", exclude_dirs=["foo2"]))
self.assertEqual(dirs, ["/foo1/bar1", "/foo1", "/foo3"])
def test_walk_files_filter(self):
files = list(self.fs.walk.files(filter=["*.txt"]))
self.assertEqual(
files, ["/foo1/top1.txt", "/foo1/top2.txt", "/foo2/bar2/bar3/test.txt"]
)
files = list(self.fs.walk.files(search="depth", filter=["*.txt"]))
self.assertEqual(
files, ["/foo1/top1.txt", "/foo1/top2.txt", "/foo2/bar2/bar3/test.txt"]
)
files = list(self.fs.walk.files(filter=["*.bin"]))
self.assertEqual(files, ["/foo2/top3.bin"])
files = list(self.fs.walk.files(filter=["*.nope"]))
self.assertEqual(files, [])
def test_walk_files_exclude(self):
# Test exclude argument works
files = list(self.fs.walk.files(exclude=["*.txt"]))
self.assertEqual(files, ["/foo2/top3.bin"])
# Test exclude doesn't break filter
files = list(self.fs.walk.files(filter=["*.bin"], exclude=["*.txt"]))
self.assertEqual(files, ["/foo2/top3.bin"])
# Test excluding everything
files = list(self.fs.walk.files(exclude=["*"]))
self.assertEqual(files, [])
def test_walk_info(self):
walk = []
for path, info in self.fs.walk.info():
walk.append((path, info.is_dir, info.name))
expected = [
("/foo1", True, "foo1"),
("/foo2", True, "foo2"),
("/foo3", True, "foo3"),
("/foo1/top1.txt", False, "top1.txt"),
("/foo1/top2.txt", False, "top2.txt"),
("/foo1/bar1", True, "bar1"),
("/foo2/bar2", True, "bar2"),
("/foo2/top3.bin", False, "top3.bin"),
("/foo2/bar2/bar3", True, "bar3"),
("/foo2/bar2/bar3/test.txt", False, "test.txt"),
]
self.assertEqual(walk, expected)
def test_broken(self):
original_scandir = self.fs.scandir
def broken_scandir(path, namespaces=None):
if path == "/foo2":
raise FSError("can't read dir")
return original_scandir(path, namespaces=namespaces)
self.fs.scandir = broken_scandir
files = list(self.fs.walk.files(search="depth", ignore_errors=True))
self.assertEqual(files, ["/foo1/top1.txt", "/foo1/top2.txt"])
with self.assertRaises(FSError):
list(self.fs.walk.files(on_error=lambda path, error: False))
def test_on_error_invalid(self):
with self.assertRaises(TypeError):
walk.Walker(on_error="nope")
def test_subdir_uses_same_walker(self):
class CustomWalker(walk.Walker):
@classmethod
def bind(cls, fs):
return walk.BoundWalker(fs, walker_class=CustomWalker)
class CustomizedMemoryFS(MemoryFS):
walker_class = CustomWalker
base_fs = CustomizedMemoryFS()
base_fs.writetext("a", "a")
base_fs.makedirs("b")
base_fs.writetext("b/c", "c")
base_fs.writetext("b/d", "d")
base_walker = base_fs.walk
self.assertEqual(base_walker.walker_class, CustomWalker)
six.assertCountEqual(self, ["/a", "/b/c", "/b/d"], base_walker.files())
sub_fs = base_fs.opendir("b")
sub_walker = sub_fs.walk
self.assertEqual(sub_walker.walker_class, CustomWalker)
six.assertCountEqual(self, ["/c", "/d"], sub_walker.files())
def test_readonly_wrapper_uses_same_walker(self):
class CustomWalker(walk.Walker):
@classmethod
def bind(cls, fs):
return walk.BoundWalker(fs, walker_class=CustomWalker)
class CustomizedMemoryFS(MemoryFS):
walker_class = CustomWalker
base_fs = CustomizedMemoryFS()
base_walker = base_fs.walk
self.assertEqual(base_walker.walker_class, CustomWalker)
readonly_fs = read_only(CustomizedMemoryFS())
readonly_walker = readonly_fs.walk
self.assertEqual(readonly_walker.walker_class, CustomWalker)
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