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Copy pathtest_buffer.py
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160 lines (119 loc) · 5.19 KB
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# Licensed to the .NET Foundation under one or more agreements.
# The .NET Foundation licenses this file to you under the Apache 2.0 License.
# See the LICENSE file in the project root for more information.
import array
import unittest
from iptest import IronPythonTestCase, is_cli, run_test
class BufferTest(IronPythonTestCase):
def test_negative(self):
self.assertRaises(TypeError, buffer, None)
self.assertRaises(TypeError, buffer, None, 0)
self.assertRaises(TypeError, buffer, None, 0, 0)
self.assertRaises(ValueError, buffer, "abc", -1) #offset < 0
self.assertRaises(ValueError, buffer, "abc", -1, 0) #offset < 0
#size < -1; -1 is allowed since that is the way to ask for the default value
self.assertRaises(ValueError, buffer, "abc", 0, -2)
def test_len(self):
testData = ('hello world', array.array('b', 'hello world'), buffer('hello world'), buffer('abchello world', 3))
if is_cli:
import System
testData += (System.Array[System.Char]('hello world'), )
for x in testData:
b = buffer(x, 6)
self.assertEqual(len(b), 5)
b = buffer(x, 6, 2)
self.assertEqual(len(b), 2)
self.assertEqual(len(buffer("abc", 5)), 0)
self.assertEqual(len(buffer("abc", 5, 50)), 0)
def test_pass_in_string(self):
b = buffer("abc", 0, -1)
self.assertEqual(str(b), "abc")
self.assertEqual(len(b), 3)
b1 = buffer("abc")
self.assertEqual(str(b1), "abc")
b2 = buffer("def", 0)
self.assertEqual(str(b2), "def")
b3 = b1 + b2
self.assertEqual(str(b3), "abcdef")
b4 = 2 * (b2 * 2)
self.assertEqual(str(b4), "defdefdefdef")
b5 = 2 * b2
self.assertEqual(str(b5), 'defdef')
def test_pass_in_buffer(self):
a = buffer("abc")
b = buffer(a, 0, 2)
self.assertEqual("ab", str(b))
c = buffer(b, 0, 1)
self.assertEqual("a", str(c))
d = buffer(b, 0, 100)
self.assertEqual("ab", str(d))
e = buffer(a, 1, 2)
self.assertEqual(str(e), "bc")
e = buffer(a, 1, 5)
self.assertEqual(str(e), "bc")
e = buffer(a, 1, -1)
self.assertEqual(str(e), "bc")
e = buffer(a, 1, 0)
self.assertEqual(str(e), "")
e = buffer(a, 1, 1)
self.assertEqual(str(e), "b")
@unittest.skipUnless(is_cli, 'IronPython specific test')
def test_pass_in_clrarray(self):
import System
a1 = System.Array[int]([1,2])
arrbuff1 = buffer(a1, 0, 5)
self.assertEqual(1, arrbuff1[0])
self.assertEqual(2, arrbuff1[1])
a2 = System.Array[System.String](["a","b"])
arrbuff2 = buffer(a2, 0, 2)
self.assertEqual("a", arrbuff2[0])
self.assertEqual("b", arrbuff2[1])
self.assertEqual(len(arrbuff1), len(arrbuff2))
arrbuff1 = buffer(a1, 1, 1)
self.assertEqual(2, arrbuff1[0])
self.assertEqual(len(arrbuff1), 1)
arrbuff1 = buffer(a1, 0, -1)
self.assertEqual(1, arrbuff1[0])
self.assertEqual(2, arrbuff1[1])
self.assertEqual(len(arrbuff1), 2)
a3 = System.Array[System.Guid]([])
self.assertRaises(TypeError, buffer, a3)
def test_equality(self):
x = buffer('abc')
self.assertEqual(x == None, False)
self.assertEqual(None == x, False)
self.assertEqual(x == x, True)
def test_buffer_add(self):
self.assertEqual(buffer('abc') + 'def', 'abcdef')
arr = array.array('b', [1,2,3,4,5])
self.assertEqual(buffer(arr) + 'abc', '\x01\x02\x03\x04\x05abc')
def test_buffer_tostr(self):
self.assertEqual(str(buffer('abc')), 'abc')
self.assertEqual(str(buffer(array.array('b', [1,2,3,4,5]))), '\x01\x02\x03\x04\x05')
def test_buffer_bytes(self):
for x in (b'abc', bytearray(b'abc')):
self.assertEqual(str(buffer(x)), 'abc')
self.assertEqual(buffer(x)[0:1], b'a')
def test_write_file(self):
inputs = [buffer('abcdef'), buffer(b'abcdef'), buffer(bytearray(b'abcdef')), buffer(array.array('b', 'abcdef'))]
text_inputs = [array.array('b', 'abcdef'), array.array('c', 'abcdef')]
#if is_cli:
# inputs.append(System.Array[System.Char]('abcdef'))
for inp in inputs + text_inputs:
with open('foo', 'wb') as f:
f.write(inp)
with open('foo') as f:
self.assertEqual(f.readlines(), ['abcdef'])
# TODO: Arrays not allowed in non-binary mode
# buffer(array(...)) is currently allowed because disallowing it
# would require some hacks.
for inp in inputs:
with open('foo', 'w') as f:
f.write(inp)
with open('foo') as f:
self.assertEqual(f.readlines(), ['abcdef'])
for inp in text_inputs:
with open('foo', 'w') as f:
self.assertRaises(TypeError, f.write, inp)
self.delete_files('foo')
run_test(__name__)