#! /usr/bin/env python # -*- coding: utf-8 -*- # Author: Hamilton Kibbe <ham@hamiltonkib.be> from .tests import assert_equal from ..utils import decimal_string, parse_gerber_value, write_gerber_value 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(value == parse_gerber_value(string, fmt, zero_suppression)) assert(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(value == parse_gerber_value(string, fmt, zero_suppression)) assert(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(value == parse_gerber_value(string, fmt, zero_suppression)) assert(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(value == parse_gerber_value(string, fmt, zero_suppression)) assert(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(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')