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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Author: Hamilton Kibbe <ham@hamiltonkib.be>
import pytest
from ..utils import *
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)
assert write_gerber_value(0.000000001, fmt, "leading") == "0"
assert write_gerber_value(0.000000001, fmt, "trailing") == "0"
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 decimal_string(value, precision=3, padding=True) == "1.123"
assert decimal_string(value, precision=4, padding=True) == "1.1230"
assert decimal_string(value, precision=5, padding=True) == "1.12300"
assert decimal_string(value, precision=6, padding=True) == "1.123000"
assert decimal_string(0, precision=6, padding=True) == "0.000000"
def test_parse_format_validation():
""" Test parse_gerber_value() format validation
"""
pytest.raises(ValueError, parse_gerber_value, "00001111", (7, 5))
pytest.raises(ValueError, parse_gerber_value, "00001111", (5, 8))
pytest.raises(ValueError, parse_gerber_value, "00001111", (13, 1))
def test_write_format_validation():
""" Test write_gerber_value() format validation
"""
pytest.raises(ValueError, write_gerber_value, 69.0, (7, 5))
pytest.raises(ValueError, write_gerber_value, 69.0, (5, 8))
pytest.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 "unknown" == detect_file_format("gerber/tests/__init__.py")
def test_validate_coordinates():
pytest.raises(TypeError, validate_coordinates, 3)
pytest.raises(TypeError, validate_coordinates, 3.1)
pytest.raises(TypeError, validate_coordinates, "14")
pytest.raises(TypeError, validate_coordinates, (0,))
pytest.raises(TypeError, validate_coordinates, (0, 1, 2))
pytest.raises(TypeError, validate_coordinates, (0, "string"))
def test_convex_hull():
points = [(0, 0), (1, 0), (1, 1), (0.5, 0.5), (0, 1), (0, 0)]
expected = [(0, 0), (1, 0), (1, 1), (0, 1), (0, 0)]
assert set(convex_hull(points)) == set(expected)
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