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Diffstat (limited to 'gerbonara/tests/test_rs274x.py')
| -rw-r--r-- | gerbonara/tests/test_rs274x.py | 524 |
1 files changed, 524 insertions, 0 deletions
diff --git a/gerbonara/tests/test_rs274x.py b/gerbonara/tests/test_rs274x.py new file mode 100644 index 0000000..9beaa7b --- /dev/null +++ b/gerbonara/tests/test_rs274x.py @@ -0,0 +1,524 @@ +#! /usr/bin/env python +# -*- coding: utf-8 -*- +# Author: Jan Götte <code@jaseg.de> +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 +'''.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, 30, 1.5, 10, 360, 1024, -30, -90] +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, -10), (10, 10), (10, 0), (0, -10), (-10, 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, 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(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') + 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 + |