#!/usr/bin/env python # -*- coding: utf-8 -*- # # Copyright 2022 Jan Götte # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # # Based on https://github.com/tracespace/tracespace # import math from PIL import Image import pytest from ..rs274x import GerberFile from ..cam import FileSettings from .image_support import * from .utils import * 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 open_outline_altium.gbr easyeda/Gerber_TopSolderMaskLayer.GTS easyeda/Gerber_TopSilkLayer.GTO easyeda/Gerber_BottomSolderMaskLayer.GBS easyeda/Gerber_BoardOutline.GKO easyeda/Gerber_TopLayer.GTL easyeda/Gerber_BottomLayer.GBL easyeda/Gerber_TopPasteMaskLayer.GTP allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr2.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr3.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_fab.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr10_GAF.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr7.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_sps.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr6.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr1_GAF.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_assy.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_smc_GAF.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr4.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr5.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_bslk.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_spc.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_tslk_GAF.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr8.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_sms_GAF.art allegro-2/MinnowMax_RevA1_GAF_Gerber/MinnowMax_lyr9.art eagle-newer/solderpaste_bottom.gbr eagle-newer/silkscreen_bottom.gbr eagle-newer/profile.gbr eagle-newer/copper_bottom.gbr eagle-newer/soldermask_top.gbr eagle-newer/solderpaste_top.gbr eagle-newer/soldermask_bottom.gbr eagle-newer/silkscreen_top.gbr eagle-newer/copper_top.gbr altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G4 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G9 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GBL altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GTO altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G11 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G1 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GBP altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G2 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GM15 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GTS altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G6 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G7 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G3 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GPB altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GM1 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G12 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GBS altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GTL altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G10 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GM14 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G5 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GTP altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GBO altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.G8 altium-composite-drill/Gerber/LimeSDR-QPCIe_1v2.GPT geda/driver.topmask.gbr geda/controller.top.gbr geda/controller.bottom.gbr geda/driver.bottommask.gbr geda/driver.top.gbr geda/driver.bottom.gbr geda/controller.topsilk.gbr geda/controller.fab.gbr geda/driver.topsilk.gbr geda/controller.group3.gbr geda/controller.topmask.gbr geda/driver.group5.gbr geda/controller.bottommask.gbr geda/driver.fab.gbr pcb-rnd/power-art.gko pcb-rnd/power-art.ast pcb-rnd/power-art.gtl pcb-rnd/power-art.lht pcb-rnd/power-art.gto pcb-rnd/power-art.gtp pcb-rnd/power-art.asb pcb-rnd/power-art.gbp pcb-rnd/power-art.gbs pcb-rnd/power-art.gbl pcb-rnd/power-art.fab pcb-rnd/power-art.gbo pcb-rnd/power-art.gts siemens/80101_0125_F200_L04.gdo siemens/80101_0125_F200_L12_Bottom.gdo siemens/80101_0125_F200_L11.gdo siemens/80101_0125_F200_L10.gdo siemens/80101_0125_F200_SolderPasteTop.gdo siemens/80101_0125_F200_SoldermaskTop.gdo siemens/80101_0125_F200_L06.gdo siemens/80101_0125_F200_L02.gdo siemens/80101_0125_F200_SilkscreenBottom.gdo siemens/80101_0125_F200_SoldermaskBottom.gdo siemens/80101_0125_F200_SolderPasteBottom.gdo siemens/80101_0125_F200_L03.gdo siemens/80101_0125_F200_L01_Top.gdo Target3001/IRNASIoTbank1.2.Bot Target3001/IRNASIoTbank1.2.Outline Target3001/IRNASIoTbank1.2.PasteBot Target3001/IRNASIoTbank1.2.PasteTop Target3001/IRNASIoTbank1.2.PosiBot Target3001/IRNASIoTbank1.2.PosiTop Target3001/IRNASIoTbank1.2.StopBot Target3001/IRNASIoTbank1.2.StopTop Target3001/IRNASIoTbank1.2.Top kicad-older/chibi_2024-Edge.Cuts.gbr kicad-older/chibi_2024-F.SilkS.gbr kicad-older/chibi_2024-B.Paste.gbr kicad-older/chibi_2024-B.Cu.gbr kicad-older/chibi_2024-F.Mask.gbr kicad-older/chibi_2024-B.Mask.gbr kicad-older/chibi_2024-F.Paste.gbr kicad-older/chibi_2024-B.SilkS.gbr kicad-older/chibi_2024-F.Cu.gbr fritzing/combined.gbs fritzing/combined.gm1 fritzing/combined.gbl fritzing/combined.gbo fritzing/combined.GKO fritzing/combined.gtl fritzing/combined.gts fritzing/combined.gto siemens-2/Gerber/SoldermaskTop.gdo siemens-2/Gerber/EtchLayerTop.gdo siemens-2/Gerber/DrillDrawingThrough.gdo siemens-2/Gerber/SoldermaskBottom.gdo siemens-2/Gerber/SolderPasteBottom.gdo siemens-2/Gerber/SolderPasteTop.gdo siemens-2/Gerber/EtchLayerBottom.gdo siemens-2/Gerber/GerberPlot.gpf siemens-2/Gerber/BoardOutlline.gdo upverter/design_export.gko upverter/design_export.gtl upverter/design_export.gbp upverter/design_export.gtp upverter/design_export.gbl upverter/design_export.gto upverter/design_export.gbs upverter/design_export.gts upverter/design_export.gbo eagle_files/solderpaste_bottom.gbr eagle_files/silkscreen_bottom.gbr eagle_files/profile.gbr eagle_files/copper_inner_l2.gbr eagle_files/copper_top_l1.gbr eagle_files/soldermask_top.gbr eagle_files/copper_inner_l3.gbr eagle_files/solderpaste_top.gbr eagle_files/soldermask_bottom.gbr eagle_files/copper_bottom_l4.gbr eagle_files/silkscreen_top.gbr diptrace/panel_BoardOutline.gbr diptrace/keyboard_BottomSilk.gbr diptrace/keyboard_Bottom.gbr diptrace/mainboard_Top.gbr diptrace/mainboard_TopMask.gbr diptrace/mainboard_BoardOutline.gbr diptrace/mainboard_Bottom.gbr diptrace/mainboard_BottomMask.gbr diptrace/keyboard_BottomMask.gbr diptrace/panel_Bottom.gbr diptrace/keyboard_BoardOutline.gbr diptrace/panel_BottomSilk.gbr diptrace/panel_BottomMask.gbr diptrace/mainboard_TopSilk.gbr zuken-emulated/Gerber/MetalMask-A.fph zuken-emulated/Gerber/MetalMask-B.fph zuken-emulated/Gerber/Symbol-A.fph zuken-emulated/Gerber/Symbol-B.fph zuken-emulated/Gerber/Resist-A.fph zuken-emulated/Gerber/Resist-B.fph zuken-emulated/Gerber/Conductive-1.fph zuken-emulated/Gerber/Conductive-2.fph '''.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' ] HAS_ZERO_SIZE_APERTURES = [ 'bottom_copper.GBL', 'bottom_silk.GBO', 'top_copper.GTL', 'top_silk.GTO', 'board_outline.GKO', 'silkscreen_top.gbr', 'combined.GKO', 'combined.gto', 'EtchLayerTop.gdo', 'EtchLayerBottom.gdo', 'BoardOutlline.gdo', ] @filter_syntax_warnings @pytest.mark.parametrize('reference', REFERENCE_FILES, indirect=True) def test_round_trip(reference, tmpfile): tmp_gbr = tmpfile('Output gerber', '.gbr') GerberFile.open(reference).save(tmp_gbr) mean, _max, hist = gerber_difference(reference, tmp_gbr, diff_out=tmpfile('Difference', '.png')) assert mean < 5e-5 assert hist[9] == 0 assert hist[3:].sum() < 5e-5*hist.size @filter_syntax_warnings @pytest.mark.parametrize('reference', REFERENCE_FILES, indirect=True) def test_idempotence(reference, tmpfile): tmp_gbr_1 = tmpfile('First generation output', '.gbr') tmp_gbr_2 = tmpfile('Second generation output', '.gbr') GerberFile.open(reference).save(tmp_gbr_1) GerberFile.open(tmp_gbr_1).save(tmp_gbr_2) assert tmp_gbr_1.read_text() == tmp_gbr_2.read_text() TEST_ANGLES = [90, 180, 270, 1.5, 30, 360, 1024, -30] TEST_OFFSETS = [(0, 0), (100, 0), (0, 100), (2, 0), (10, 100)] @filter_syntax_warnings @pytest.mark.parametrize('reference', MIN_REFERENCE_FILES, indirect=True) @pytest.mark.parametrize('angle', TEST_ANGLES) def test_rotation(reference, angle, tmpfile): if 'flash_rectangle' in str(reference) and angle == 1024: # gerbv's rendering of this is broken, the hole is missing. pytest.skip() tmp_gbr = tmpfile('Output gerber', '.gbr') f = GerberFile.open(reference) f.rotate(math.radians(angle)) f.save(tmp_gbr) cx, cy = 0, to_gerbv_svg_units(10, unit='inch') mean, _max, hist = gerber_difference(reference, tmp_gbr, diff_out=tmpfile('Difference', '.png'), svg_transform=f'rotate({angle} {cx} {cy})') assert mean < 1e-3 # relax mean criterion compared to above. assert hist[9] == 0 @filter_syntax_warnings @pytest.mark.parametrize('reference', MIN_REFERENCE_FILES, indirect=True) @pytest.mark.parametrize('angle', TEST_ANGLES) @pytest.mark.parametrize('center', [(0, 0), (10, 0), (0, -10), (10, 20)]) def test_rotation_center(reference, angle, center, tmpfile): if 'flash_rectangle' in str(reference) and angle in (30, 1024): # gerbv's rendering of this is broken, the hole is missing. pytest.skip() tmp_gbr = tmpfile('Output gerber', '.gbr') f = GerberFile.open(reference) f.rotate(math.radians(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(size[1], 'inch')-to_gerbv_svg_units(center[1], 'mm') mean, _max, hist = gerber_difference(reference, tmp_gbr, diff_out=tmpfile('Difference', '.png'), svg_transform=f'rotate({angle} {cx} {cy})', size=size) assert mean < 1e-3 assert hist[9] < 50 assert hist[3:].sum() < 1e-3*hist.size @filter_syntax_warnings @pytest.mark.parametrize('reference', MIN_REFERENCE_FILES, indirect=True) @pytest.mark.parametrize('offset', TEST_OFFSETS) def test_offset(reference, offset, tmpfile): tmp_gbr = tmpfile('Output gerber', '.gbr') f = GerberFile.open(reference) 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, hist = gerber_difference(reference, tmp_gbr, diff_out=tmpfile('Difference', '.png'), svg_transform=f'translate({dx} {dy})') assert mean < 1e-4 assert hist[9] == 0 @filter_syntax_warnings @pytest.mark.parametrize('reference', MIN_REFERENCE_FILES, indirect=True) @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, 10)]) def test_combined(reference, angle, center, offset, tmpfile): if 'flash_rectangle' in str(reference) and angle in (30, 1024): # gerbv's rendering of this is broken, the hole is missing. pytest.skip() tmp_gbr = tmpfile('Output gerber', '.gbr') f = GerberFile.open(reference) f.rotate(math.radians(angle), center=center) f.offset(*offset) f.save(tmp_gbr, settings=FileSettings(unit=f.unit, number_format=(4,7))) size = (10, 10) # inches cx, cy = to_gerbv_svg_units(center[0]), to_gerbv_svg_units(size[1], 'inch')-to_gerbv_svg_units(center[1], 'mm') dx, dy = to_gerbv_svg_units(offset[0]), -to_gerbv_svg_units(offset[1]) mean, _max, hist = gerber_difference(reference, tmp_gbr, diff_out=tmpfile('Difference', '.png'), svg_transform=f'translate({dx} {dy}) rotate({angle} {cx} {cy})', size=size) assert mean < 1e-3 assert hist[9] < 100 assert hist[3:].sum() < 1e-3*hist.size @filter_syntax_warnings @pytest.mark.parametrize('file_a', MIN_REFERENCE_FILES) @pytest.mark.parametrize('file_b', [ 'example_two_square_boxes.gbr', 'example_outline_with_arcs.gbr', 'example_am_exposure_modifier.gbr', 'bottom_silk.GBO', 'eagle_files/copper_bottom_l4.gbr', ]) @pytest.mark.parametrize('angle', [0, 10, 90]) @pytest.mark.parametrize('offset', [(0, 0, 0, 0), (100, 0, 0, 0), (0, 0, 0, 100), (100, 0, 0, 100)]) def test_compositing(file_a, file_b, angle, offset, tmpfile, print_on_error): # TODO bottom_silk.GBO renders incorrectly with gerbv: the outline does not exist in svg. In GUI, the logo only # renders at very high magnification. Skip, and once we have our own SVG export maybe use that instead. Or just use # KiCAD's gerbview. # TODO check if this and the issue with aperture holes not rendering in test_combined actually are bugs in gerbv # and fix/report upstream. if file_a == 'bottom_silk.GBO' or file_b == 'bottom_silk.GBO': pytest.skip() ref_a = reference_path(file_a) print_on_error('Reference file a:', ref_a) ref_b = reference_path(file_b) print_on_error('Reference file b:', ref_b) ax, ay, bx, by = offset grb_a = GerberFile.open(ref_a) grb_a.rotate(math.radians(angle)) grb_a.offset(ax, ay) grb_b = GerberFile.open(ref_b) grb_b.offset(bx, by) grb_a.merge(grb_b) tmp_gbr = tmpfile('Output gerber', '.gbr') grb_a.save(tmp_gbr, settings=FileSettings(unit=grb_a.unit, number_format=(4,7))) size = (10, 10) # inches ax, ay = to_gerbv_svg_units(ax), -to_gerbv_svg_units(ay) bx, by = to_gerbv_svg_units(bx), -to_gerbv_svg_units(by) # note that we have to specify cx, cy even if we rotate around the origin since gerber's origin lies at (x=0 # y=+document size) in SVG's coordinate space because svg's y axis is flipped compared to gerber's. cx, cy = 0, to_gerbv_svg_units(size[1], 'inch') mean, _max, hist = gerber_difference_merge(ref_a, ref_b, tmp_gbr, composite_out=tmpfile('Composite', '.svg'), diff_out=tmpfile('Difference', '.png'), svg_transform1=f'translate({ax} {ay}) rotate({angle} {cx} {cy})', svg_transform2=f'translate({bx} {by})', size=size) assert mean < 1e-3 assert hist[9] < 100 assert hist[3:].sum() < 1e-3*hist.size @filter_syntax_warnings @pytest.mark.parametrize('reference', REFERENCE_FILES, indirect=True) def test_svg_export_gerber(reference, tmpfile): if reference.name in ('silkscreen_bottom.gbr', 'silkscreen_top.gbr', 'top_silk.GTO'): # Some weird svg rendering artifact. Might be caused by mismatching svg units between gerbv and us. Result looks # fine though. pytest.skip() if reference.name == 'MinnowMax_assy.art': # This leads to worst-case performance in resvg, this testcase takes over 1h to finish. So skip. pytest.skip() grb = GerberFile.open(reference) bounds = (0.0, 0.0), (6.0, 6.0) # bottom left, top right out_svg = tmpfile('Output', '.svg') with open(out_svg, 'w') as f: f.write(str(grb.to_svg(force_bounds=bounds, arg_unit='inch', fg='black', bg='white'))) # NOTE: Instead of having gerbv directly export a PNG, we ask gerbv to output SVG which we then rasterize using # resvg. We have to do this since gerbv's built-in cairo-based PNG export has severe aliasing issues. In contrast, # using resvg for both allows an apples-to-apples comparison of both results. ref_svg = tmpfile('Reference export', '.svg') ref_png = tmpfile('Reference render', '.png') gerbv_export(reference, ref_svg, origin=bounds[0], size=bounds[1], fg='#000000', bg='#ffffff') with svg_soup(ref_svg) as soup: cleanup_gerbv_svg(soup) svg_to_png(ref_svg, ref_png, dpi=300, bg='white') out_png = tmpfile('Output render', '.png') svg_to_png(out_svg, out_png, dpi=300, bg='white') if reference.name in HAS_ZERO_SIZE_APERTURES: # gerbv does not render these correctly. return mean, _max, hist = image_difference(ref_png, out_png, diff_out=tmpfile('Difference', '.png')) assert hist[9] < 1 if 'Minnow' in reference.name or 'LimeSDR' in reference.name or '80101_0125_F200' in reference.name: # This is a dense design with lots of traces, leading to lots of aliasing artifacts. assert mean < 10e-3 assert hist[4:].sum() < 1e-2*hist.size else: assert mean < 1.2e-3 assert hist[3:].sum() < 1e-3*hist.size # FIXME test svg margin, bounding box computation @filter_syntax_warnings @pytest.mark.parametrize('reference', REFERENCE_FILES, indirect=True) def test_bounding_box(reference, tmpfile): if reference.name == 'MinnowMax_assy.art': # This leads to worst-case performance in resvg, this testcase takes over 1h to finish. So skip. pytest.skip() # skip this check on files that contain lines with a zero-size aperture at the board edge if any(reference.match(f'*/{f}') for f in HAS_ZERO_SIZE_APERTURES): pytest.skip() margin = 1.0 # inch dpi = 200 margin_px = int(dpi*margin) # intentionally round down to avoid aliasing artifacts grb = GerberFile.open(reference) if grb.is_empty: pytest.skip() out_svg = tmpfile('Output', '.svg') with open(out_svg, 'w') as f: f.write(str(grb.to_svg(margin=margin, arg_unit='inch', fg='white', bg='black'))) out_png = tmpfile('Render', '.png') svg_to_png(out_svg, out_png, dpi=dpi) img = np.array(Image.open(out_png)) img = img[:, :, :3].mean(axis=2) # drop alpha and convert to grayscale img = np.round(img).astype(int) # convert to int assert (img > 0).any() # there must be some content, none of the test gerbers are completely empty. cols = img.sum(axis=1) rows = img.sum(axis=0) col_prefix, col_suffix = np.argmax(cols > 0), np.argmax(cols[::-1] > 0) row_prefix, row_suffix = np.argmax(rows > 0), np.argmax(rows[::-1] > 0) print('cols:', col_prefix, col_suffix) print('rows:', row_prefix, row_suffix) # Check that all margins are completely black and that the content touches the margins. Allow for some tolerance to # allow for antialiasing artifacts and for things like very thin features. assert margin_px-2 <= col_prefix <= margin_px+2 assert margin_px-2 <= col_suffix <= margin_px+2 assert margin_px-2 <= row_prefix <= margin_px+2 assert margin_px-2 <= row_suffix <= margin_px+2 @filter_syntax_warnings def test_syntax_error(): ref = reference_path('test_syntax_error.gbr') with pytest.raises(SyntaxError) as exc_info: GerberFile.open(ref) assert 'test_syntax_error.gbr' in exc_info.value.msg assert '7' in exc_info.value.msg # lineno