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#!/usr/bin/env python3 |
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"""Tests for the elementstring class""" |
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import pytest |
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import unittest |
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from starstruct.message import Message |
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from starstruct.elementstring import ElementString |
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# pylint: disable=line-too-long,invalid-name |
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class TestElementString(unittest.TestCase): |
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"""ElementString module tests""" |
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def test_valid(self): |
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"""Test field formats that are valid ElementString elements.""" |
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test_fields = [ |
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('a', 'c'), # single character |
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('b', '2c'), # 2 char string |
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('c', '10s'), # 10 char string (variable) |
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('d', '5p'), # 5 char string (fixed) |
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] |
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for field in test_fields: |
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with self.subTest(field): # pylint: disable=no-member |
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out = ElementString.valid(field) |
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self.assertTrue(out) |
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def test_not_valid(self): |
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"""Test field formats that are not valid ElementString elements.""" |
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test_fields = [ |
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('a', '4x'), # 4 pad bytes |
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('b', 'z'), # invalid |
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('c', '1'), # invalid |
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('d', '9S'), # invalid (must be lowercase) |
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('e', '/'), # invalid |
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('a', 'b'), # signed byte: -128, 127 |
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('b', 'H'), # unsigned short: 0, 65535 |
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('d', 'L'), # unsigned long: 0, 2^32-1 |
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('e', '?'), # bool: 0, 1 |
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] |
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for field in test_fields: |
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with self.subTest(field): # pylint: disable=no-member |
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out = ElementString.valid(field) |
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self.assertFalse(out) |
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def test_make_andk_pack(self): |
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"""Test field formats that are valid ElementString elements.""" |
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TestStruct = Message('TestStruct', [ |
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('a', 'c'), # single character |
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('b', '2c'), # 2 char string |
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('c', '10s'), # 10 char string (variable) |
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('d', '9p'), # 9 ( - 1 ) char string (fixed) |
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('e', '5c'), |
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]) |
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test_data = { |
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'a': 'i', |
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'b': 'hi', |
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'c': 'short', |
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'd': 'long', |
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'e': ['l', 'i', 's', 't'], |
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} |
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made = TestStruct.make(test_data) |
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assert made.a == ['i'] |
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assert made.b == ['h', 'i'] |
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assert made.c == 'short' |
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assert made.d == 'long\x00\x00\x00\x00' |
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assert made.e == ['l', 'i', 's', 't', '\x00'] |
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packed = TestStruct.pack(test_data) |
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unpacked = TestStruct.unpack(packed) |
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assert made == unpacked |
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def test_alignment(self): |
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"""Test field formats that are valid ElementString elements.""" |
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TestStruct = Message('TestStruct', [ |
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('a', 'c'), # single character |
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('b', '2c'), # 2 char string |
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]) |
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test_data = { |
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'a': 'a', |
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'b': 'no', |
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} |
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TestStruct.update(alignment=4) |
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packed = TestStruct.pack(test_data) |
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assert packed == b'a\x00\x00\x00no\x00\x00' |
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def test_bad_values(self): |
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"""Test field formats that are valid ElementString elements.""" |
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TestStruct = Message('TestStruct', [ |
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('a', 'c'), # single character |
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('b', '2c'), # 2 char string |
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]) |
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test_data = { |
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'a': [5], |
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'b': 'no', |
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} |
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with pytest.raises(TypeError): |
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TestStruct.make(test_data) |
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sprout42 /
StarStruct
