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# * Copyright (c) 2022 sliptonic <shopinthewoods@gmail.com> *
# * Copyright (c) 2022 Larry Woestman <LarryWoestman2@gmail.com> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
from importlib import reload
import FreeCAD
import Path
from CAMTests import PathTestUtils
from Path.Post.scripts import centroid_legacy_post as postprocessor
Path.Log.setLevel(Path.Log.Level.DEBUG, Path.Log.thisModule())
Path.Log.trackModule(Path.Log.thisModule())
class TestCentroidLegacyPost(PathTestUtils.PathTestBase):
"""Test suite for the Centroid legacy postprocessor.
This class verifies the functionality of the centroid_legacy_post postprocessor,
which generates G-code for Centroid CNC controllers. Tests cover:
- Output generation with various options (header, comments, editor suppression)
- Command formatting and coordinate precision control
- Line numbering
- Preamble and postamble generation
- Unit conversion (metric/imperial)
- Modal command suppression
- Axis modal (coordinate suppression for unchanged axes)
- Tool change command generation with tool length offset (TLO)
- Comment formatting and conversion
The legacy postprocessor has limited configurability compared to newer
postprocessors, and some command-line options are tested to verify they
don't break the default behavior.
"""
@classmethod
def setUpClass(cls):
"""setUpClass()...
This method is called upon instantiation of this test class. Add code
and objects here that are needed for the duration of the test() methods
in this class. In other words, set up the 'global' test environment
here; use the `setUp()` method to set up a 'local' test environment.
This method does not have access to the class `self` reference, but it
is able to call static methods within this same class.
"""
# Open existing FreeCAD document with test geometry
FreeCAD.newDocument("Unnamed")
@classmethod
def tearDownClass(cls):
"""tearDownClass()...
This method is called prior to destruction of this test class. Add
code and objects here that cleanup the test environment after the
test() methods in this class have been executed. This method does
not have access to the class `self` reference. This method
is able to call static methods within this same class.
"""
# Close geometry document without saving
FreeCAD.closeDocument(FreeCAD.ActiveDocument.Name)
# Setup and tear down methods called before and after each unit test
def setUp(self):
"""setUp()...
This method is called prior to each `test()` method. Add code and
objects here that are needed for multiple `test()` methods.
"""
self.doc = FreeCAD.ActiveDocument
self.con = FreeCAD.Console
self.docobj = FreeCAD.ActiveDocument.addObject("Path::Feature", "testpath")
reload(
postprocessor
) # technical debt. This shouldn't be necessary but here to bypass a bug
def tearDown(self):
"""tearDown()...
This method is called after each test() method. Add cleanup instructions here.
Such cleanup instructions will likely undo those in the setUp() method.
"""
FreeCAD.ActiveDocument.removeObject("testpath")
def test000(self):
"""Test Output Generation.
Empty path. Produces only the preamble and postable.
"""
self.docobj.Path = Path.Path([])
postables = [self.docobj]
# Test generating with header
# Header contains a time stamp that messes up unit testing.
# Only test length of result.
args = "--no-show-editor"
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(len(gcode.splitlines()), 16)
# Test without header
expected = """G90 G80 G40 G49
;begin preamble
G53 G00 G17
G21
;begin operation
;end operation: testpath
;begin postamble
M5
M25
G49 H0
G90 G80 G40 G49
M99
"""
self.docobj.Path = Path.Path([])
postables = [self.docobj]
args = "--no-header --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(gcode, expected)
# test without comments
expected = """G90 G80 G40 G49
G53 G00 G17
G21
M5
M25
G49 H0
G90 G80 G40 G49
M99
"""
args = "--no-header --no-comments --no-show-editor"
# args = ("--no-header --no-comments --no-show-editor --precision=2")
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(gcode, expected)
def test010(self):
"""Test command Generation.
Test Precision
"""
c = Path.Command("G0 X10 Y20 Z30")
self.docobj.Path = Path.Path([c])
postables = [self.docobj]
args = "--no-header --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[5]
expected = "G0 X10.0000 Y20.0000 Z30.0000"
self.assertEqual(result, expected)
args = "--no-header --axis-precision=2 --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[5]
expected = "G0 X10.00 Y20.00 Z30.00"
self.assertEqual(result, expected)
def test020(self):
"""
Test Line Numbers
"""
c = Path.Command("G0 X10 Y20 Z30")
self.docobj.Path = Path.Path([c])
postables = [self.docobj]
args = "--no-header --line-numbers --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[5]
expected = "N150 G0 X10.0000 Y20.0000 Z30.0000"
self.assertEqual(result, expected)
def test030(self):
"""
Test Pre-amble
"""
self.docobj.Path = Path.Path([])
postables = [self.docobj]
#
# The original centroid postprocessor does not have a
# --preamble option. We end up with the default preamble.
#
args = "--no-header --no-comments --preamble='G18 G55' --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[1]
self.assertEqual(result, "G53 G00 G17")
def test040(self):
"""
Test Post-amble
"""
self.docobj.Path = Path.Path([])
postables = [self.docobj]
#
# The original centroid postprocessor does not have a
# --postamble option. We end up with the default postamble.
#
args = "--no-header --no-comments --postamble='G0 Z50\nM2' --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(gcode.splitlines()[-1], "M99")
def test050(self):
"""
Test inches
"""
c = Path.Command("G0 X10 Y20 Z30")
self.docobj.Path = Path.Path([c])
postables = [self.docobj]
args = "--no-header --inches --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(gcode.splitlines()[3], "G20")
result = gcode.splitlines()[5]
expected = "G0 X0.3937 Y0.7874 Z1.1811"
self.assertEqual(result, expected)
args = "--no-header --inches --axis-precision=2 --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[5]
expected = "G0 X0.39 Y0.79 Z1.18"
self.assertEqual(result, expected)
def test060(self):
"""
Test test modal
Suppress the command name if the same as previous
"""
c = Path.Command("G0 X10 Y20 Z30")
c1 = Path.Command("G0 X10 Y30 Z30")
self.docobj.Path = Path.Path([c, c1])
postables = [self.docobj]
#
# The original centroid postprocessor does not have a
# --modal option. We end up with the original gcode.
#
args = "--no-header --modal --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[6]
expected = "G0 X10.0000 Y30.0000 Z30.0000"
self.assertEqual(result, expected)
def test070(self):
"""
Test axis modal
Suppress the axis coordinate if the same as previous
"""
c = Path.Command("G0 X10 Y20 Z30")
c1 = Path.Command("G0 X10 Y30 Z30")
self.docobj.Path = Path.Path([c, c1])
postables = [self.docobj]
#
# The original centroid postprocessor does not have an
# --axis-modal option. We end up with the original gcode.
#
args = "--no-header --axis-modal --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[6]
expected = "G0 X10.0000 Y30.0000 Z30.0000"
self.assertEqual(result, expected)
def test080(self):
"""
Test tool change
"""
c = Path.Command("M6 T2")
c2 = Path.Command("M3 S3000")
self.docobj.Path = Path.Path([c, c2])
postables = [self.docobj]
args = "--no-header --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(gcode.splitlines()[5], "G43 H2")
self.assertEqual(gcode.splitlines()[6], "M6 T2")
self.assertEqual(gcode.splitlines()[7], "M3 S3000")
# suppress TLO
#
# The original centroid postprocessor does not have an
# --no-tlo option. We end up with the original gcode.
#
args = "--no-header --no-tlo --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
self.assertEqual(gcode.splitlines()[6], "M3 S3000")
def test090(self):
"""
Test comment
"""
c = Path.Command("(comment)")
self.docobj.Path = Path.Path([c])
postables = [self.docobj]
args = "--no-header --no-show-editor"
gcode = postprocessor.export(postables, "-", args)
result = gcode.splitlines()[5]
expected = ";comment"
self.assertEqual(result, expected)
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