def test_generated_file_function(self):
"""
Test GeneratedFile behavior with functions.
"""
dest = self.tmppath("dest")
data = {
"num_calls": 0,
}
def content():
data["num_calls"] += 1
return b"content"
f = GeneratedFile(content)
self.assertEqual(data["num_calls"], 0)
f.copy(dest)
self.assertEqual(data["num_calls"], 1)
self.assertEqual(b"content", open(dest, "rb").read())
self.assertEqual(b"content", f.open().read())
self.assertEqual(b"content", f.read())
self.assertEqual(len(b"content"), f.size())
self.assertEqual(data["num_calls"], 1)
f.content = b"modified"
f.copy(dest)
self.assertEqual(data["num_calls"], 1)
self.assertEqual(b"modified", open(dest, "rb").read())
self.assertEqual(b"modified", f.open().read())
self.assertEqual(b"modified", f.read())
self.assertEqual(len(b"modified"), f.size())
f.content = content
self.assertEqual(data["num_calls"], 1)
self.assertEqual(b"content", f.read())
self.assertEqual(data["num_calls"], 2)
def test_generated_file_function(self):
'''
Test GeneratedFile behavior with functions.
'''
dest = self.tmppath('dest')
data = {
'num_calls': 0,
}
def content():
data['num_calls'] += 1
return b'content'
f = GeneratedFile(content)
self.assertEqual(data['num_calls'], 0)
f.copy(dest)
self.assertEqual(data['num_calls'], 1)
self.assertEqual(b'content', open(dest, 'rb').read())
self.assertEqual(b'content', f.open().read())
self.assertEqual(b'content', f.read())
self.assertEqual(len(b'content'), f.size())
self.assertEqual(data['num_calls'], 1)
f.content = b'modified'
f.copy(dest)
self.assertEqual(data['num_calls'], 1)
self.assertEqual(b'modified', open(dest, 'rb').read())
self.assertEqual(b'modified', f.open().read())
self.assertEqual(b'modified', f.read())
self.assertEqual(len(b'modified'), f.size())
f.content = content
self.assertEqual(data['num_calls'], 1)
self.assertEqual(b'content', f.read())
self.assertEqual(data['num_calls'], 2)
def test_generated_file(self):
"""
Check that GeneratedFile.copy yields the proper content in the
destination file in all situations that trigger different code paths
(see TestFile.test_file)
"""
dest = self.tmppath("dest")
for content in samples:
f = GeneratedFile(content)
f.copy(dest)
self.assertEqual(content, open(dest, "rb").read())
def test_generated_file(self):
'''
Check that GeneratedFile.copy yields the proper content in the
destination file in all situations that trigger different code paths
(see TestFile.test_file)
'''
dest = self.tmppath('dest')
for content in samples:
f = GeneratedFile(content)
f.copy(dest)
self.assertEqual(content, open(dest, 'rb').read())
def test_generated_file_no_write(self):
"""
Test various conditions where GeneratedFile.copy is expected not to
write in the destination file.
"""
dest = self.tmppath("dest")
# Initial copy
f = GeneratedFile(b"test")
f.copy(dest)
# Ensure subsequent copies won't trigger writes
f.copy(DestNoWrite(dest))
self.assertEqual(b"test", open(dest, "rb").read())
# When using a new instance with the same content, no copy should occur
f = GeneratedFile(b"test")
f.copy(DestNoWrite(dest))
self.assertEqual(b"test", open(dest, "rb").read())
# Double check that under conditions where a copy occurs, we would get
# an exception.
f = GeneratedFile(b"fooo")
self.assertRaises(RuntimeError, f.copy, DestNoWrite(dest))
def test_generated_file_no_write(self):
'''
Test various conditions where GeneratedFile.copy is expected not to
write in the destination file.
'''
dest = self.tmppath('dest')
# Initial copy
f = GeneratedFile('test')
f.copy(dest)
# Ensure subsequent copies won't trigger writes
f.copy(DestNoWrite(dest))
self.assertEqual('test', open(dest, 'rb').read())
# When using a new instance with the same content, no copy should occur
f = GeneratedFile('test')
f.copy(DestNoWrite(dest))
self.assertEqual('test', open(dest, 'rb').read())
# Double check that under conditions where a copy occurs, we would get
# an exception.
f = GeneratedFile('fooo')
self.assertRaises(RuntimeError, f.copy, DestNoWrite(dest))
