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Wrote more tests for IntBuilder
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@MicroTransactionsMatterToo
MicroTransactionsMatterToo committed Sep 4, 2017
1 parent 17e366b commit 19a4b99
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Showing 3 changed files with 322 additions and 13 deletions.
25 changes: 13 additions & 12 deletions midisnake/integers.py
View file
Expand Up @@ -19,14 +19,15 @@
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from sys import byteorder
import sys

from typing import SupportsInt, SupportsAbs

class LengthException(Exception):
pass


class IntBuilder:
class IntBuilder(SupportsInt, SupportsAbs):
"""
Builds and contains integer data from a variable length byte-encoded number
Expand Down Expand Up @@ -85,21 +86,21 @@ def __int__(self):
"big": self.big_endian,
"little": self.little_endian
}
return switch[byteorder]
return switch[sys.byteorder]

def __add__(self, other) -> [int, float]:
def __add__(self, other: SupportsInt) -> [int, float]:
switch = {
"big": self.big_endian + other,
"little": self.little_endian + other
"big": self.big_endian + int(other),
"little": self.little_endian + int(other)
}
return switch[byteorder]
return switch[sys.byteorder]

def __sub__(self, other) -> [int, float]:
def __sub__(self, other: SupportsInt) -> [int, float]:
switch = {
"big": self.big_endian - other,
"little": self.little_endian - other
"big": self.big_endian - int(other),
"little": self.little_endian - int(other)
}
return switch[byteorder]
return switch[sys.byteorder]

def __abs__(self):
def __abs__(self): # pragma: no cover
return abs(self.__int__())
2 changes: 1 addition & 1 deletion midisnake/structure.py
View file
Expand Up @@ -50,7 +50,7 @@ class Header:
division = None # type: float


class Event(metaclass=ABCMeta): # pragma: no
class Event(metaclass=ABCMeta): # pragma: no cover
"""
Metaclass representing a MIDI Event. Subclasses must implement the :func:`~_process` function
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308 changes: 308 additions & 0 deletions tests/test_intbuilder.py
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Expand Up @@ -20,8 +20,10 @@
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import unittest
import sys
import logging
from unittest import TestCase
from unittest.mock import patch

from midisnake.integers import IntBuilder, LengthException

Expand Down Expand Up @@ -64,6 +66,312 @@ def test_str(self):
self.assertEqual(str(self.intb_inst), "42LE : 42BE : 0x2aB".format(
mem_addr=memory_address))

def test_int(self):
logger.info("Starting __int__ tests")
with patch('sys.byteorder', 'little'):
self.assertEqual(sys.byteorder, 'little', 'Patch failed')
self.intb_inst = IntBuilder(bytearray(b'\x01\xa4'))
self.assertEqual(self.intb_inst.__int__(),
41985,
msg="IntBuilder __int__ return incorrect value with system byteorder set to little")
self.assertEqual(int(self.intb_inst),
41985,
msg="IntBuilder converted with int() return incorrect value with system byteorder set to "
"little")
self.intb_inst = IntBuilder(bytearray(b'\x2a'))
self.assertEqual(self.intb_inst.__int__(),
42,
msg="IntBuilder __int__ return incorrect value with system byteorder set to little")
self.assertEqual(int(self.intb_inst),
42,
msg="IntBuilder converted with int() return incorrect value with system byteorder set to "
"little")
with patch('sys.byteorder', 'big'):
self.assertEqual(sys.byteorder, 'big', 'Patch failed')
self.intb_inst = IntBuilder(bytearray(b'\x01\xa4'))

self.assertEqual(self.intb_inst.__int__(),
420,
msg="IntBuilder __int__ return incorrect value with system byteorder set to big")
self.assertEqual(int(self.intb_inst),
420,
msg="IntBuilder converted with int() return incorrect value with system byteorder set to "
"big")
self.intb_inst = IntBuilder(bytearray(b'\x2a'))
self.assertEqual(self.intb_inst.__int__(),
42,
msg="IntBuilder __int__ return incorrect value with system byteorder set to big")
self.assertEqual(int(self.intb_inst),
42,
msg="IntBuilder converted with int() return incorrect value with system byteorder set to "
"big")

def test_sub(self):
logger.info("Starting __sub__ tests")
with patch('sys.byteorder', 'little'):
self.assertEqual(sys.byteorder, 'little', 'Patch failed')
self.intb_inst = IntBuilder(bytearray(b'\x01\xa4'))
self.other_inst = IntBuilder(bytearray(b'\xFF'))
self.assertEqual(
self.intb_inst - self.intb_inst,
0,
"IntBuilder(41985) minus itself did not equal 0"
)
self.assertEqual(
self.intb_inst - self.other_inst,
41730,
"IntBuilder(41985) minus IntBuilder(255) (little endian mode) did not equal 41730"
)
self.assertEqual(
self.other_inst - self.intb_inst,
-41730,
"IntBuilder(255) minus IntBuilder(41985) (little endian mode) did not equal -41730"
)
self.assertEqual(
self.intb_inst - 41985,
0,
"IntBuilder(41985) minus 41985 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst - 255,
41730,
"IntBuilder(41985) minus Int(255) (little endian mode) did not equal 41730"
)
self.assertEqual(
self.other_inst - 41985,
-41730,
"IntBuilder(255) minus Int(41985) (little endian mode) did not equal -41730"
)
self.intb_inst = IntBuilder(bytearray(b'\x2a'))
self.assertEqual(
self.intb_inst - self.intb_inst,
0,
"IntBuilder(42) minus itself did not equal 0"
)
self.assertEqual(
self.intb_inst - self.other_inst,
-213,
"IntBuilder(42) minus IntBuilder(255) (little endian mode) did not equal -213"
)
self.assertEqual(
self.other_inst - self.intb_inst,
213,
"IntBuilder(255) minus IntBuilder(42) (little endian mode) did not equal 213"
)
self.assertEqual(
self.intb_inst - 42,
0,
"IntBuilder(42) minus 42 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst - 255,
-213,
"IntBuilder(42) minus Int(255) (little endian mode) did not equal -213"
)
self.assertEqual(
self.other_inst - 42,
213,
"IntBuilder(42) minus Int(41985) (little endian mode) did not equal 213"
)
with patch('sys.byteorder', 'big'):
self.assertEqual(sys.byteorder, 'big', 'Patch failed')
self.intb_inst = IntBuilder(bytearray(b'\x01\xa4'))
self.other_inst = IntBuilder(bytearray(b'\xFF'))
self.assertEqual(
self.intb_inst - self.intb_inst,
0,
"IntBuilder(420) minus itself did not equal 0"
)
self.assertEqual(
self.intb_inst - self.other_inst,
165,
"IntBuilder(420) minus IntBuilder(255) (big endian mode) did not equal 165"
)
self.assertEqual(
self.other_inst - self.intb_inst,
-165,
"IntBuilder(255) minus IntBuilder(420) (big endian mode) did not equal -165"
)
self.assertEqual(
self.intb_inst - 420,
0,
"IntBuilder(420) minus 420 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst - 255,
165,
"IntBuilder(420) minus Int(255) (big endian mode) did not equal 165"
)
self.assertEqual(
self.other_inst - 420,
-165,
"IntBuilder(255) minus Int(420) (big endian mode) did not equal -165"
)
self.intb_inst = IntBuilder(bytearray(b'\x2a'))
self.assertEqual(
self.intb_inst - self.intb_inst,
0,
"IntBuilder(42) minus itself did not equal 0"
)
self.assertEqual(
self.intb_inst - self.other_inst,
-213,
"IntBuilder(42) minus IntBuilder(255) (big endian mode) did not equal -213"
)
self.assertEqual(
self.other_inst - self.intb_inst,
213,
"IntBuilder(255) minus IntBuilder(42) (big endian mode) did not equal 213"
)
self.assertEqual(
self.intb_inst - 42,
0,
"IntBuilder(42) minus 42 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst - 255,
-213,
"IntBuilder(42) minus Int(255) (big endian mode) did not equal -213"
)
self.assertEqual(
self.other_inst - 42,
213,
"IntBuilder(42) minus Int(420) (big endian mode) did not equal 213"
)

def test_add(self):
logger.info("Starting __add__ tests")
with patch('sys.byteorder', 'little'):
self.assertEqual(sys.byteorder, 'little', 'Patch failed')
self.intb_inst = IntBuilder(bytearray(b'\x01\xa4'))
self.other_inst = IntBuilder(bytearray(b'\xFF'))
self.assertEqual(
self.intb_inst + self.intb_inst,
83970,
"IntBuilder(41985) plus itself did not equal 0"
)
self.assertEqual(
self.intb_inst + self.other_inst,
42240,
"IntBuilder(41985) plus IntBuilder(255) (little endian mode) did not equal 42240"
)
self.assertEqual(
self.other_inst + self.intb_inst,
42240,
"IntBuilder(255) plus IntBuilder(41985) (little endian mode) did not equal +42240"
)
self.assertEqual(
self.intb_inst + 41985,
83970,
"IntBuilder(41985) plus 41985 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst + 255,
42240,
"IntBuilder(41985) plus Int(255) (little endian mode) did not equal 42240"
)
self.assertEqual(
self.other_inst + 41985,
42240,
"IntBuilder(255) plus Int(41985) (little endian mode) did not equal +42240"
)
self.intb_inst = IntBuilder(bytearray(b'\x2a'))
self.assertEqual(
self.intb_inst + self.intb_inst,
84,
"IntBuilder(42) plus itself did not equal 0"
)
self.assertEqual(
self.intb_inst + self.other_inst,
297,
"IntBuilder(42) plus IntBuilder(255) (little endian mode) did not equal +213"
)
self.assertEqual(
self.other_inst + self.intb_inst,
297,
"IntBuilder(255) plus IntBuilder(42) (little endian mode) did not equal 213"
)
self.assertEqual(
self.intb_inst + 42,
84,
"IntBuilder(42) plus 42 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst + 255,
297,
"IntBuilder(42) plus Int(255) (little endian mode) did not equal +213"
)
self.assertEqual(
self.other_inst + 42,
297,
"IntBuilder(42) plus Int(41985) (little endian mode) did not equal 213"
)
with patch('sys.byteorder', 'big'):
self.assertEqual(sys.byteorder, 'big', 'Patch failed')
self.intb_inst = IntBuilder(bytearray(b'\x01\xa4'))
self.other_inst = IntBuilder(bytearray(b'\xFF'))
self.assertEqual(
self.intb_inst + self.intb_inst,
840,
"IntBuilder(420) plus itself did not equal 0"
)
self.assertEqual(
self.intb_inst + self.other_inst,
675,
"IntBuilder(420) plus IntBuilder(255) (big endian mode) did not equal 675"
)
self.assertEqual(
self.other_inst + self.intb_inst,
675,
"IntBuilder(255) plus IntBuilder(420) (big endian mode) did not equal +675"
)
self.assertEqual(
self.intb_inst + 420,
840,
"IntBuilder(420) plus 420 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst + 255,
675,
"IntBuilder(420) plus Int(255) (big endian mode) did not equal 675"
)
self.assertEqual(
self.other_inst + 420,
675,
"IntBuilder(255) plus Int(420) (big endian mode) did not equal +675"
)
self.intb_inst = IntBuilder(bytearray(b'\x2a'))
self.assertEqual(
self.intb_inst + self.intb_inst,
84,
"IntBuilder(42) plus itself did not equal 0"
)
self.assertEqual(
self.intb_inst + self.other_inst,
297,
"IntBuilder(42) plus IntBuilder(255) (big endian mode) did not equal +213"
)
self.assertEqual(
self.other_inst + self.intb_inst,
297,
"IntBuilder(255) plus IntBuilder(42) (big endian mode) did not equal 213"
)
self.assertEqual(
self.intb_inst + 42,
84,
"IntBuilder(42) plus 42 (itself) did not equal 0"
)
self.assertEqual(
self.intb_inst + 255,
297,
"IntBuilder(42) plus Int(255) (big endian mode) did not equal +213"
)
self.assertEqual(
self.other_inst + 42,
297,
"IntBuilder(42) plus Int(420) (big endian mode) did not equal 213"
)

def test_nullbyte(self):
with self.assertRaises(LengthException):
self.intb_inst = IntBuilder(bytearray(b''))
Expand Down

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