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import os
import shutil
import tempfile
import unittest
import param
from .utils import check_defaults
class TestFileSelectorParameters(unittest.TestCase):
def setUp(self):
super().setUp()
tmpdir1 = tempfile.mkdtemp()
fa = os.path.join(tmpdir1, 'a.txt')
fb = os.path.join(tmpdir1, 'b.txt')
glob1 = os.path.join(tmpdir1, '*')
open(fa, 'w').close()
open(fb, 'w').close()
tmpdir2 = tempfile.mkdtemp()
fc = os.path.join(tmpdir2, 'c.txt')
fd = os.path.join(tmpdir2, 'd.txt')
glob2 = os.path.join(tmpdir2, '*')
open(fc, 'w').close()
open(fd, 'w').close()
self.tmpdir1 = tmpdir1
self.tmpdir2 = tmpdir2
self.fa = fa
self.fb = fb
self.fc = fc
self.fd = fd
self.glob1 = glob1
self.glob2 = glob2
class P(param.Parameterized):
a = param.FileSelector(path=glob1)
b = param.FileSelector(default=fa, path=glob1)
self.P = P
def tearDown(self):
shutil.rmtree(self.tmpdir1)
shutil.rmtree(self.tmpdir2)
def _check_defaults(self, p):
assert p.default is None
assert p.allow_None is None
assert p.objects == []
assert p.compute_default_fn is None
assert p.check_on_set is False
assert p.names == {}
assert p.path == ""
def test_defaults_class(self):
class P(param.Parameterized):
s = param.FileSelector()
check_defaults(P.param.s, label='S')
self._check_defaults(P.param.s)
def test_defaults_inst(self):
class P(param.Parameterized):
s = param.FileSelector()
p = P()
check_defaults(p.param.s, label='S')
self._check_defaults(p.param.s)
def test_defaults_unbound(self):
s = param.FileSelector()
check_defaults(s, label=None)
self._check_defaults(s)
def test_default_to_first(self):
p = self.P()
assert p.a == p.param.a.objects[0]
def test_default_is_honored(self):
p = self.P()
assert p.b == self.fa
assert p.param.b.default in [self.fa, self.fb]
def test_allow_default_None(self):
class P(param.Parameterized):
a = param.FileSelector(default=None)
def test_default_not_in_glob(self):
with self.assertRaises(ValueError):
class P(param.Parameterized):
a = param.FileSelector(default='not/in/glob', path=self.glob1)
def test_objects_auto_set(self):
p = self.P()
assert p.param.a.objects == [self.fa, self.fb]
def test_set_object_constructor(self):
p = self.P(a=self.fb)
assert p.a == self.fb
def test_set_object_outside_bounds(self):
p = self.P()
with self.assertRaises(ValueError):
p.a = '/not/in/glob'
def test_set_path_and_update(self):
p = self.P()
p.param.b.path = self.glob2
p.param.b.update()
assert p.param.b.objects == [self.fc, self.fd]
assert p.param.b.default in [self.fc, self.fd]
# Default updated but not the value itself
assert p.b == self.fa
def test_path_autoupdate(self):
p = self.P()
p.param.b.path = self.glob2
assert p.param.b.objects == [self.fc, self.fd]
assert p.param.b.default in [self.fc, self.fd]
# Default updated but not the value itself
assert p.b == self.fa
def test_get_range(self):
p = self.P()
r = p.param.a.get_range()
assert r['a.txt'] == self.fa
assert r['b.txt'] == self.fb
p.param.a.path = self.glob2
p.param.a.update()
r = p.param.a.get_range()
assert r['c.txt'] == self.fc
assert r['d.txt'] == self.fd
def test_update_file_removed(self):
p = self.P()
assert p.param.b.objects == [self.fa, self.fb]
assert p.param.b.default in [self.fa, self.fb]
os.remove(self.fa)
p.param.b.update()
assert p.param.b.objects == [self.fb]
assert p.param.b.default == self.fb
def test_fileselector_glob_parent(tmpdir):
# https://github.com/holoviz/param/issues/139
ncwd = tmpdir / 'folder'
data = tmpdir / 'data'
data.mkdir()
(data / 'foo.txt').write_text('foo', encoding='utf-8')
ncwd.mkdir()
cwd = os.getcwd()
os.chdir(ncwd)
try:
if os.name == 'nt':
default = r'..\data\foo.txt'
else:
default = '../data/foo.txt'
class P(param.Parameterized):
fs = param.FileSelector(default, path='../data/*.txt')
assert len(P.param.fs.objects) == 1
assert P.fs == default
finally:
os.chdir(cwd)
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