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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# Author: Hamilton Kibbe <ham@hamiltonkib.be>
import os
import re
import math
import functools
import tempfile
import shutil
from argparse import Namespace
from itertools import chain
from pathlib import Path
import pytest
from ..rs274x import GerberFile
from ..cam import FileSettings
from .image_support import gerber_difference
deg_to_rad = lambda a: a/180 * math.pi
fail_dir = Path('gerbonara_test_failures')
@pytest.fixture(scope='session', autouse=True)
def clear_failure_dir(request):
for f in chain(fail_dir.glob('*.gbr'), fail_dir.glob('*.png')):
f.unlink()
reference_path = lambda reference: Path(__file__).parent / 'resources' / reference
@pytest.fixture
def temp_files(request):
with tempfile.NamedTemporaryFile(suffix='.gbr') as tmp_out_gbr,\
tempfile.NamedTemporaryFile(suffix='.png') as tmp_out_png:
yield Path(tmp_out_gbr.name), Path(tmp_out_png.name)
if request.node.rep_call.failed:
module, _, test_name = request.node.nodeid.rpartition('::')
_test, _, test_name = test_name.partition('_')
test_name, _, _ext = test_name.partition('.')
test_name = re.sub(r'[^\w\d]', '_', test_name)
fail_dir.mkdir(exist_ok=True)
perm_path_gbr = fail_dir / f'failure_{test_name}.gbr'
perm_path_png = fail_dir / f'failure_{test_name}.png'
shutil.copy(tmp_out_gbr.name, perm_path_gbr)
shutil.copy(tmp_out_png.name, perm_path_png)
print(f'Failing output saved to {perm_path_gbr}')
print(f'Reference file is {reference_path(request.node.funcargs["reference"])}')
print(f'Difference image saved to {perm_path_png}')
print(f'gerbv command line:')
print(f'gerbv {perm_path_gbr} {reference_path(request.node.funcargs["reference"])}')
to_gerbv_svg_units = lambda val, unit='mm': val*72 if unit == 'inch' else val/25.4*72
REFERENCE_FILES = [ l.strip() for l in '''
board_outline.GKO
example_outline_with_arcs.gbr
example_two_square_boxes.gbr
example_coincident_hole.gbr
example_cutin.gbr
example_cutin_multiple.gbr
example_flash_circle.gbr
example_flash_obround.gbr
example_flash_polygon.gbr
example_flash_rectangle.gbr
example_fully_coincident.gbr
example_guess_by_content.g0
example_holes_dont_clear.gbr
example_level_holes.gbr
example_not_overlapping_contour.gbr
example_not_overlapping_touching.gbr
example_overlapping_contour.gbr
example_overlapping_touching.gbr
example_simple_contour.gbr
example_single_contour_1.gbr
example_single_contour_2.gbr
example_single_contour_3.gbr
example_am_exposure_modifier.gbr
bottom_copper.GBL
bottom_mask.GBS
bottom_silk.GBO
eagle_files/copper_bottom_l4.gbr
eagle_files/copper_inner_l2.gbr
eagle_files/copper_inner_l3.gbr
eagle_files/copper_top_l1.gbr
eagle_files/profile.gbr
eagle_files/silkscreen_bottom.gbr
eagle_files/silkscreen_top.gbr
eagle_files/soldermask_bottom.gbr
eagle_files/soldermask_top.gbr
eagle_files/solderpaste_bottom.gbr
eagle_files/solderpaste_top.gbr
multiline_read.ger
test_fine_lines_x.gbr
test_fine_lines_y.gbr
top_copper.GTL
top_mask.GTS
top_silk.GTO
'''.splitlines() if l ]
MIN_REFERENCE_FILES = [
'example_two_square_boxes.gbr',
'example_outline_with_arcs.gbr',
'example_flash_circle.gbr',
'example_flash_polygon.gbr',
'example_flash_rectangle.gbr',
'example_simple_contour.gbr',
'example_am_exposure_modifier.gbr',
'bottom_copper.GBL',
'bottom_silk.GBO',
'eagle_files/copper_bottom_l4.gbr'
]
@pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning')
@pytest.mark.filterwarnings('ignore::SyntaxWarning')
@pytest.mark.parametrize('reference', REFERENCE_FILES)
def test_round_trip(temp_files, reference):
tmp_gbr, tmp_png = temp_files
ref = reference_path(reference)
GerberFile.open(ref).save(tmp_gbr)
mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png)
assert mean < 1e-6
assert max < 0.1
TEST_ANGLES = [90, 180, 270, 30, 1.5, 10, 360, 1024, -30, -90]
TEST_OFFSETS = [(0, 0), (100, 0), (0, 100), (2, 0), (10, 100)]
@pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning')
@pytest.mark.filterwarnings('ignore::SyntaxWarning')
@pytest.mark.parametrize('reference', MIN_REFERENCE_FILES)
@pytest.mark.parametrize('angle', TEST_ANGLES)
def test_rotation(temp_files, reference, angle):
if 'flash_rectangle' in reference and angle == 1024:
# gerbv's rendering of this is broken, the hole is missing.
return
tmp_gbr, tmp_png = temp_files
ref = reference_path(reference)
f = GerberFile.open(ref)
f.rotate(deg_to_rad(angle))
f.save(tmp_gbr)
cx, cy = 0, to_gerbv_svg_units(10, unit='inch')
mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png, svg_transform=f'rotate({angle} {cx} {cy})')
assert mean < 1e-3 # relax mean criterion compared to above.
assert max < 0.9
@pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning')
@pytest.mark.filterwarnings('ignore::SyntaxWarning')
@pytest.mark.parametrize('reference', MIN_REFERENCE_FILES)
@pytest.mark.parametrize('angle', TEST_ANGLES)
@pytest.mark.parametrize('center', [(0, 0), (-10, -10), (10, 10), (10, 0), (0, -10), (-10, 10), (10, 20)])
def test_rotation_center(temp_files, reference, angle, center):
tmp_gbr, tmp_png = temp_files
ref = reference_path(reference)
f = GerberFile.open(ref)
f.rotate(deg_to_rad(angle), center=center)
f.save(tmp_gbr)
# calculate circle center in SVG coordinates
size = (10, 10) # inches
cx, cy = to_gerbv_svg_units(center[0]), to_gerbv_svg_units(10, 'inch')-to_gerbv_svg_units(center[1], 'mm')
mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png,
svg_transform=f'rotate({angle} {cx} {cy})',
size=size)
assert mean < 1e-3
assert max < 0.9
@pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning')
@pytest.mark.filterwarnings('ignore::SyntaxWarning')
@pytest.mark.parametrize('reference', MIN_REFERENCE_FILES)
@pytest.mark.parametrize('offset', TEST_OFFSETS)
def test_offset(temp_files, reference, offset):
tmp_gbr, tmp_png = temp_files
ref = reference_path(reference)
f = GerberFile.open(ref)
f.offset(*offset)
f.save(tmp_gbr, settings=FileSettings(unit=f.unit, number_format=(4,7)))
# flip y offset since svg's y axis is flipped compared to that of gerber
dx, dy = to_gerbv_svg_units(offset[0]), -to_gerbv_svg_units(offset[1])
mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png, svg_transform=f'translate({dx} {dy})')
assert mean < 1e-4
assert max < 0.9
@pytest.mark.filterwarnings('ignore:Deprecated.*statement found.*:DeprecationWarning')
@pytest.mark.filterwarnings('ignore::SyntaxWarning')
@pytest.mark.parametrize('reference', MIN_REFERENCE_FILES)
@pytest.mark.parametrize('angle', TEST_ANGLES)
@pytest.mark.parametrize('center', [(0, 0), (10, 0), (0, -10), (10, 20)])
@pytest.mark.parametrize('offset', [(0, 0), (100, 0), (0, 100), (100, 100), (100, 10)])
def test_combined(temp_files, reference, angle, center, offset):
tmp_gbr, tmp_png = temp_files
ref = reference_path(reference)
f = GerberFile.open(ref)
f.rotate(deg_to_rad(angle), center=center)
f.offset(*offset)
f.save(tmp_gbr)
size = (10, 10) # inches
cx, cy = to_gerbv_svg_units(center[0]), to_gerbv_svg_units(10, 'inch')-to_gerbv_svg_units(center[1], 'mm')
dx, dy = to_gerbv_svg_units(offset[0]), -to_gerbv_svg_units(offset[1])
mean, max = gerber_difference(ref, tmp_gbr, diff_out=tmp_png,
svg_transform=f'rotate({anlge} {cx} {cy}) translate({dx} {dy})',
size=size)
assert mean < 1e-4
assert max < 0.9
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