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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Author: Hamilton Kibbe <ham@hamiltonkib.be>
from .tests import assert_equal, assert_raises
from ..utils import decimal_string, parse_gerber_value, write_gerber_value, detect_file_format
def test_zero_suppression():
""" Test gerber value parser and writer handle zero suppression correctly.
"""
# Default format
fmt = (2, 5)
# Test leading zero suppression
zero_suppression = 'leading'
test_cases = [('1', 0.00001), ('10', 0.0001), ('100', 0.001),
('1000', 0.01), ('10000', 0.1), ('100000', 1.0),
('1000000', 10.0), ('-1', -0.00001), ('-10', -0.0001),
('-100', -0.001), ('-1000', -0.01), ('-10000', -0.1),
('-100000', -1.0), ('-1000000', -10.0),
('0', 0.0)]
for string, value in test_cases:
assert_equal(value, parse_gerber_value(string, fmt, zero_suppression))
assert_equal(string, write_gerber_value(value, fmt, zero_suppression))
# Test trailing zero suppression
zero_suppression = 'trailing'
test_cases = [('1', 10.0), ('01', 1.0), ('001', 0.1), ('0001', 0.01),
('00001', 0.001), ('000001', 0.0001),
('0000001', 0.00001), ('-1', -10.0), ('-01', -1.0),
('-001', -0.1), ('-0001', -0.01), ('-00001', -0.001),
('-000001', -0.0001), ('-0000001', -0.00001),
('0', 0.0)]
for string, value in test_cases:
assert_equal(value, parse_gerber_value(string, fmt, zero_suppression))
assert_equal(string, write_gerber_value(value, fmt, zero_suppression))
def test_format():
""" Test gerber value parser and writer handle format correctly
"""
zero_suppression = 'leading'
test_cases = [((2, 7), '1', 0.0000001), ((2, 6), '1', 0.000001),
((2, 5), '1', 0.00001), ((2, 4), '1', 0.0001),
((2, 3), '1', 0.001), ((2, 2), '1', 0.01),
((2, 1), '1', 0.1), ((2, 7), '-1', -0.0000001),
((2, 6), '-1', -0.000001), ((2, 5), '-1', -0.00001),
((2, 4), '-1', -0.0001), ((2, 3), '-1', -0.001),
((2, 2), '-1', -0.01), ((2, 1), '-1', -0.1),
((2, 6), '0', 0) ]
for fmt, string, value in test_cases:
assert_equal(value, parse_gerber_value(string, fmt, zero_suppression))
assert_equal(string, write_gerber_value(value, fmt, zero_suppression))
zero_suppression = 'trailing'
test_cases = [((6, 5), '1', 100000.0), ((5, 5), '1', 10000.0),
((4, 5), '1', 1000.0), ((3, 5), '1', 100.0),
((2, 5), '1', 10.0), ((1, 5), '1', 1.0),
((6, 5), '-1', -100000.0), ((5, 5), '-1', -10000.0),
((4, 5), '-1', -1000.0), ((3, 5), '-1', -100.0),
((2, 5), '-1', -10.0), ((1, 5), '-1', -1.0),
((2, 5), '0', 0)]
for fmt, string, value in test_cases:
assert_equal(value, parse_gerber_value(string, fmt, zero_suppression))
assert_equal(string, write_gerber_value(value, fmt, zero_suppression))
def test_decimal_truncation():
""" Test decimal_string truncates value to the correct precision
"""
value = 1.123456789
for x in range(10):
result = decimal_string(value, precision=x)
calculated = '1.' + ''.join(str(y) for y in range(1,x+1))
assert_equal(result, calculated)
def test_decimal_padding():
""" Test decimal_string padding
"""
value = 1.123
assert_equal(decimal_string(value, precision=3, padding=True), '1.123')
assert_equal(decimal_string(value, precision=4, padding=True), '1.1230')
assert_equal(decimal_string(value, precision=5, padding=True), '1.12300')
assert_equal(decimal_string(value, precision=6, padding=True), '1.123000')
assert_equal(decimal_string(0, precision=6, padding=True), '0.000000')
def test_parse_format_validation():
""" Test parse_gerber_value() format validation
"""
assert_raises(ValueError, parse_gerber_value, '00001111', (7, 5))
assert_raises(ValueError, parse_gerber_value, '00001111', (5, 8))
assert_raises(ValueError, parse_gerber_value, '00001111', (13,1))
def test_write_format_validation():
""" Test write_gerber_value() format validation
"""
assert_raises(ValueError, write_gerber_value, 69.0, (7, 5))
assert_raises(ValueError, write_gerber_value, 69.0, (5, 8))
assert_raises(ValueError, write_gerber_value, 69.0, (13,1))
def test_detect_format_with_short_file():
""" Verify file format detection works with short files
"""
assert_equal('unknown', detect_file_format('gerber/tests/__init__.py'))
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