Migrate to pytest (#111)

* Migrate to pytest

All tests were update to use pytest.

Tests were alse black formatted. Eventually all code
will be black formatted but need to merge some PRs first.

1 files changed, 325 insertions, 291 deletions

diff --git a/gerber/tests/test_excellon_statements.py b/gerber/tests/test_excellon_statements.py
index 8e6e06e..41fe294 100644
--- a/gerber/tests/test_excellon_statements.py
+++ b/gerber/tests/test_excellon_statements.py
@@ -3,15 +3,15 @@
 
 # Author: Hamilton Kibbe <ham@hamiltonkib.be>
 
-from .tests import assert_equal, assert_not_equal, assert_raises
+import pytest
 from ..excellon_statements import *
 from ..cam import FileSettings
 
 
 def test_excellon_statement_implementation():
     stmt = ExcellonStatement()
-    assert_raises(NotImplementedError, stmt.from_excellon, None)
-    assert_raises(NotImplementedError, stmt.to_excellon)
+    pytest.raises(NotImplementedError, stmt.from_excellon, None)
+    pytest.raises(NotImplementedError, stmt.to_excellon)
 
 
 def test_excellontstmt():
@@ -26,154 +26,173 @@ def test_excellontstmt():
 def test_excellontool_factory():
     """ Test ExcellonTool factory methods
     """
-    exc_line = 'T8F01B02S00003H04Z05C0.12500'
-    settings = FileSettings(format=(2, 5), zero_suppression='trailing',
-                            units='inch', notation='absolute')
+    exc_line = "T8F01B02S00003H04Z05C0.12500"
+    settings = FileSettings(
+        format=(2, 5), zero_suppression="trailing", units="inch", notation="absolute"
+    )
     tool = ExcellonTool.from_excellon(exc_line, settings)
-    assert_equal(tool.number, 8)
-    assert_equal(tool.diameter, 0.125)
-    assert_equal(tool.feed_rate, 1)
-    assert_equal(tool.retract_rate, 2)
-    assert_equal(tool.rpm, 3)
-    assert_equal(tool.max_hit_count, 4)
-    assert_equal(tool.depth_offset, 5)
-
-    stmt = {'number': 8, 'feed_rate': 1, 'retract_rate': 2, 'rpm': 3,
-            'diameter': 0.125, 'max_hit_count': 4, 'depth_offset': 5}
+    assert tool.number == 8
+    assert tool.diameter == 0.125
+    assert tool.feed_rate == 1
+    assert tool.retract_rate == 2
+    assert tool.rpm == 3
+    assert tool.max_hit_count == 4
+    assert tool.depth_offset == 5
+
+    stmt = {
+        "number": 8,
+        "feed_rate": 1,
+        "retract_rate": 2,
+        "rpm": 3,
+        "diameter": 0.125,
+        "max_hit_count": 4,
+        "depth_offset": 5,
+    }
     tool = ExcellonTool.from_dict(settings, stmt)
-    assert_equal(tool.number, 8)
-    assert_equal(tool.diameter, 0.125)
-    assert_equal(tool.feed_rate, 1)
-    assert_equal(tool.retract_rate, 2)
-    assert_equal(tool.rpm, 3)
-    assert_equal(tool.max_hit_count, 4)
-    assert_equal(tool.depth_offset, 5)
+    assert tool.number == 8
+    assert tool.diameter == 0.125
+    assert tool.feed_rate == 1
+    assert tool.retract_rate == 2
+    assert tool.rpm == 3
+    assert tool.max_hit_count == 4
+    assert tool.depth_offset == 5
 
 
 def test_excellontool_dump():
     """ Test ExcellonTool to_excellon()
     """
-    exc_lines = ['T01F0S0C0.01200', 'T02F0S0C0.01500', 'T03F0S0C0.01968',
-                 'T04F0S0C0.02800', 'T05F0S0C0.03300', 'T06F0S0C0.03800',
-                 'T07F0S0C0.04300', 'T08F0S0C0.12500', 'T09F0S0C0.13000',
-                 'T08B01F02H03S00003C0.12500Z04', 'T01F0S300.999C0.01200']
-    settings = FileSettings(format=(2, 5), zero_suppression='trailing',
-                            units='inch', notation='absolute')
+    exc_lines = [
+        "T01F0S0C0.01200",
+        "T02F0S0C0.01500",
+        "T03F0S0C0.01968",
+        "T04F0S0C0.02800",
+        "T05F0S0C0.03300",
+        "T06F0S0C0.03800",
+        "T07F0S0C0.04300",
+        "T08F0S0C0.12500",
+        "T09F0S0C0.13000",
+        "T08B01F02H03S00003C0.12500Z04",
+        "T01F0S300.999C0.01200",
+    ]
+    settings = FileSettings(
+        format=(2, 5), zero_suppression="trailing", units="inch", notation="absolute"
+    )
     for line in exc_lines:
         tool = ExcellonTool.from_excellon(line, settings)
-        assert_equal(tool.to_excellon(), line)
+        assert tool.to_excellon() == line
 
 
 def test_excellontool_order():
-    settings = FileSettings(format=(2, 5), zero_suppression='trailing',
-                            units='inch', notation='absolute')
-    line = 'T8F00S00C0.12500'
+    settings = FileSettings(
+        format=(2, 5), zero_suppression="trailing", units="inch", notation="absolute"
+    )
+    line = "T8F00S00C0.12500"
     tool1 = ExcellonTool.from_excellon(line, settings)
-    line = 'T8C0.12500F00S00'
+    line = "T8C0.12500F00S00"
     tool2 = ExcellonTool.from_excellon(line, settings)
-    assert_equal(tool1.diameter, tool2.diameter)
-    assert_equal(tool1.feed_rate, tool2.feed_rate)
-    assert_equal(tool1.rpm, tool2.rpm)
+    assert tool1.diameter == tool2.diameter
+    assert tool1.feed_rate == tool2.feed_rate
+    assert tool1.rpm == tool2.rpm
 
 
 def test_excellontool_conversion():
-    tool = ExcellonTool.from_dict(FileSettings(units='metric'),
-                                  {'number': 8, 'diameter': 25.4})
+    tool = ExcellonTool.from_dict(
+        FileSettings(units="metric"), {"number": 8, "diameter": 25.4}
+    )
     tool.to_inch()
-    assert_equal(tool.diameter, 1.)
-    tool = ExcellonTool.from_dict(FileSettings(units='inch'),
-                                  {'number': 8, 'diameter': 1.})
+    assert tool.diameter == 1.0
+    tool = ExcellonTool.from_dict(
+        FileSettings(units="inch"), {"number": 8, "diameter": 1.0}
+    )
     tool.to_metric()
-    assert_equal(tool.diameter, 25.4)
+    assert tool.diameter == 25.4
 
     # Shouldn't change units if we're already using target units
-    tool = ExcellonTool.from_dict(FileSettings(units='inch'),
-                                  {'number': 8, 'diameter': 25.4})
+    tool = ExcellonTool.from_dict(
+        FileSettings(units="inch"), {"number": 8, "diameter": 25.4}
+    )
     tool.to_inch()
-    assert_equal(tool.diameter, 25.4)
-    tool = ExcellonTool.from_dict(FileSettings(units='metric'),
-                                  {'number': 8, 'diameter': 1.})
+    assert tool.diameter == 25.4
+    tool = ExcellonTool.from_dict(
+        FileSettings(units="metric"), {"number": 8, "diameter": 1.0}
+    )
     tool.to_metric()
-    assert_equal(tool.diameter, 1.)
+    assert tool.diameter == 1.0
 
 
 def test_excellontool_repr():
-    tool = ExcellonTool.from_dict(FileSettings(),
-                                  {'number': 8, 'diameter': 0.125})
-    assert_equal(str(tool), '<ExcellonTool 08: 0.125in. dia.>')
-    tool = ExcellonTool.from_dict(FileSettings(units='metric'),
-                                  {'number': 8, 'diameter': 0.125})
-    assert_equal(str(tool), '<ExcellonTool 08: 0.125mm dia.>')
+    tool = ExcellonTool.from_dict(FileSettings(), {"number": 8, "diameter": 0.125})
+    assert str(tool) == "<ExcellonTool 08: 0.125in. dia.>"
+    tool = ExcellonTool.from_dict(
+        FileSettings(units="metric"), {"number": 8, "diameter": 0.125}
+    )
+    assert str(tool) == "<ExcellonTool 08: 0.125mm dia.>"
 
 
 def test_excellontool_equality():
-    t = ExcellonTool.from_dict(
-        FileSettings(), {'number': 8, 'diameter': 0.125})
+    t = ExcellonTool.from_dict(FileSettings(), {"number": 8, "diameter": 0.125})
+    t1 = ExcellonTool.from_dict(FileSettings(), {"number": 8, "diameter": 0.125})
+    assert t == t1
     t1 = ExcellonTool.from_dict(
-        FileSettings(), {'number': 8, 'diameter': 0.125})
-    assert_equal(t, t1)
-    t1 = ExcellonTool.from_dict(FileSettings(units='metric'),
-                                {'number': 8, 'diameter': 0.125})
-    assert_not_equal(t, t1)
+        FileSettings(units="metric"), {"number": 8, "diameter": 0.125}
+    )
+    assert t != t1
 
 
 def test_toolselection_factory():
     """ Test ToolSelectionStmt factory method
     """
-    stmt = ToolSelectionStmt.from_excellon('T01')
-    assert_equal(stmt.tool, 1)
-    assert_equal(stmt.compensation_index, None)
-    stmt = ToolSelectionStmt.from_excellon('T0223')
-    assert_equal(stmt.tool, 2)
-    assert_equal(stmt.compensation_index, 23)
-    stmt = ToolSelectionStmt.from_excellon('T042')
-    assert_equal(stmt.tool, 42)
-    assert_equal(stmt.compensation_index, None)
+    stmt = ToolSelectionStmt.from_excellon("T01")
+    assert stmt.tool == 1
+    assert stmt.compensation_index == None
+    stmt = ToolSelectionStmt.from_excellon("T0223")
+    assert stmt.tool == 2
+    assert stmt.compensation_index == 23
+    stmt = ToolSelectionStmt.from_excellon("T042")
+    assert stmt.tool == 42
+    assert stmt.compensation_index == None
 
 
 def test_toolselection_dump():
     """ Test ToolSelectionStmt to_excellon()
     """
-    lines = ['T01', 'T0223', 'T10', 'T09', 'T0000']
+    lines = ["T01", "T0223", "T10", "T09", "T0000"]
     for line in lines:
         stmt = ToolSelectionStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_z_axis_infeed_rate_factory():
     """ Test ZAxisInfeedRateStmt factory method
     """
-    stmt = ZAxisInfeedRateStmt.from_excellon('F01')
-    assert_equal(stmt.rate, 1)
-    stmt = ZAxisInfeedRateStmt.from_excellon('F2')
-    assert_equal(stmt.rate, 2)
-    stmt = ZAxisInfeedRateStmt.from_excellon('F03')
-    assert_equal(stmt.rate, 3)
+    stmt = ZAxisInfeedRateStmt.from_excellon("F01")
+    assert stmt.rate == 1
+    stmt = ZAxisInfeedRateStmt.from_excellon("F2")
+    assert stmt.rate == 2
+    stmt = ZAxisInfeedRateStmt.from_excellon("F03")
+    assert stmt.rate == 3
 
 
 def test_z_axis_infeed_rate_dump():
     """ Test ZAxisInfeedRateStmt to_excellon()
     """
-    inputs = [
-        ('F01', 'F01'),
-        ('F2', 'F02'),
-        ('F00003', 'F03')
-    ]
+    inputs = [("F01", "F01"), ("F2", "F02"), ("F00003", "F03")]
     for input_rate, expected_output in inputs:
         stmt = ZAxisInfeedRateStmt.from_excellon(input_rate)
-        assert_equal(stmt.to_excellon(), expected_output)
+        assert stmt.to_excellon() == expected_output
 
 
 def test_coordinatestmt_factory():
     """ Test CoordinateStmt factory method
     """
-    settings = FileSettings(format=(2, 5), zero_suppression='trailing',
-                            units='inch', notation='absolute')
+    settings = FileSettings(
+        format=(2, 5), zero_suppression="trailing", units="inch", notation="absolute"
+    )
 
-    line = 'X0278207Y0065293'
+    line = "X0278207Y0065293"
     stmt = CoordinateStmt.from_excellon(line, settings)
-    assert_equal(stmt.x, 2.78207)
-    assert_equal(stmt.y, 0.65293)
+    assert stmt.x == 2.78207
+    assert stmt.y == 0.65293
 
     # line = 'X02945'
     # stmt = CoordinateStmt.from_excellon(line)
@@ -183,518 +202,533 @@ def test_coordinatestmt_factory():
     # stmt = CoordinateStmt.from_excellon(line)
     # assert_equal(stmt.y, 0.575)
 
-    settings = FileSettings(format=(2, 4), zero_suppression='leading',
-                            units='inch', notation='absolute')
+    settings = FileSettings(
+        format=(2, 4), zero_suppression="leading", units="inch", notation="absolute"
+    )
 
-    line = 'X9660Y4639'
+    line = "X9660Y4639"
     stmt = CoordinateStmt.from_excellon(line, settings)
-    assert_equal(stmt.x, 0.9660)
-    assert_equal(stmt.y, 0.4639)
-    assert_equal(stmt.to_excellon(settings), "X9660Y4639")
-    assert_equal(stmt.units, 'inch')
+    assert stmt.x == 0.9660
+    assert stmt.y == 0.4639
+    assert stmt.to_excellon(settings) == "X9660Y4639"
+    assert stmt.units == "inch"
 
-    settings.units = 'metric'
+    settings.units = "metric"
     stmt = CoordinateStmt.from_excellon(line, settings)
-    assert_equal(stmt.units, 'metric')
+    assert stmt.units == "metric"
 
 
 def test_coordinatestmt_dump():
     """ Test CoordinateStmt to_excellon()
     """
-    lines = ['X278207Y65293', 'X243795', 'Y82528', 'Y86028',
-             'X251295Y81528', 'X2525Y78', 'X255Y575', 'Y52',
-             'X2675', 'Y575', 'X2425', 'Y52', 'X23', ]
-    settings = FileSettings(format=(2, 4), zero_suppression='leading',
-                            units='inch', notation='absolute')
+    lines = [
+        "X278207Y65293",
+        "X243795",
+        "Y82528",
+        "Y86028",
+        "X251295Y81528",
+        "X2525Y78",
+        "X255Y575",
+        "Y52",
+        "X2675",
+        "Y575",
+        "X2425",
+        "Y52",
+        "X23",
+    ]
+    settings = FileSettings(
+        format=(2, 4), zero_suppression="leading", units="inch", notation="absolute"
+    )
     for line in lines:
         stmt = CoordinateStmt.from_excellon(line, settings)
-        assert_equal(stmt.to_excellon(settings), line)
+        assert stmt.to_excellon(settings) == line
 
 
 def test_coordinatestmt_conversion():
 
     settings = FileSettings()
-    settings.units = 'metric'
-    stmt = CoordinateStmt.from_excellon('X254Y254', settings)
+    settings.units = "metric"
+    stmt = CoordinateStmt.from_excellon("X254Y254", settings)
 
     # No effect
     stmt.to_metric()
-    assert_equal(stmt.x, 25.4)
-    assert_equal(stmt.y, 25.4)
+    assert stmt.x == 25.4
+    assert stmt.y == 25.4
 
     stmt.to_inch()
-    assert_equal(stmt.units, 'inch')
-    assert_equal(stmt.x, 1.)
-    assert_equal(stmt.y, 1.)
+    assert stmt.units == "inch"
+    assert stmt.x == 1.0
+    assert stmt.y == 1.0
 
     # No effect
     stmt.to_inch()
-    assert_equal(stmt.x, 1.)
-    assert_equal(stmt.y, 1.)
+    assert stmt.x == 1.0
+    assert stmt.y == 1.0
 
-    settings.units = 'inch'
-    stmt = CoordinateStmt.from_excellon('X01Y01', settings)
+    settings.units = "inch"
+    stmt = CoordinateStmt.from_excellon("X01Y01", settings)
 
     # No effect
     stmt.to_inch()
-    assert_equal(stmt.x, 1.)
-    assert_equal(stmt.y, 1.)
+    assert stmt.x == 1.0
+    assert stmt.y == 1.0
 
     stmt.to_metric()
-    assert_equal(stmt.units, 'metric')
-    assert_equal(stmt.x, 25.4)
-    assert_equal(stmt.y, 25.4)
+    assert stmt.units == "metric"
+    assert stmt.x == 25.4
+    assert stmt.y == 25.4
 
     # No effect
     stmt.to_metric()
-    assert_equal(stmt.x, 25.4)
-    assert_equal(stmt.y, 25.4)
+    assert stmt.x == 25.4
+    assert stmt.y == 25.4
 
 
 def test_coordinatestmt_offset():
-    stmt = CoordinateStmt.from_excellon('X01Y01', FileSettings())
+    stmt = CoordinateStmt.from_excellon("X01Y01", FileSettings())
     stmt.offset()
-    assert_equal(stmt.x, 1)
-    assert_equal(stmt.y, 1)
+    assert stmt.x == 1
+    assert stmt.y == 1
     stmt.offset(1, 0)
-    assert_equal(stmt.x, 2.)
-    assert_equal(stmt.y, 1.)
+    assert stmt.x == 2.0
+    assert stmt.y == 1.0
     stmt.offset(0, 1)
-    assert_equal(stmt.x, 2.)
-    assert_equal(stmt.y, 2.)
+    assert stmt.x == 2.0
+    assert stmt.y == 2.0
 
 
 def test_coordinatestmt_string():
-    settings = FileSettings(format=(2, 4), zero_suppression='leading',
-                            units='inch', notation='absolute')
-    stmt = CoordinateStmt.from_excellon('X9660Y4639', settings)
-    assert_equal(str(stmt), '<Coordinate Statement: X: 0.966 Y: 0.4639 >')
+    settings = FileSettings(
+        format=(2, 4), zero_suppression="leading", units="inch", notation="absolute"
+    )
+    stmt = CoordinateStmt.from_excellon("X9660Y4639", settings)
+    assert str(stmt) == "<Coordinate Statement: X: 0.966 Y: 0.4639 >"
 
 
 def test_repeathole_stmt_factory():
-    stmt = RepeatHoleStmt.from_excellon('R0004X015Y32',
-                                        FileSettings(zeros='leading',
-                                                     units='inch'))
-    assert_equal(stmt.count, 4)
-    assert_equal(stmt.xdelta, 1.5)
-    assert_equal(stmt.ydelta, 32)
-    assert_equal(stmt.units, 'inch')
+    stmt = RepeatHoleStmt.from_excellon(
+        "R0004X015Y32", FileSettings(zeros="leading", units="inch")
+    )
+    assert stmt.count == 4
+    assert stmt.xdelta == 1.5
+    assert stmt.ydelta == 32
+    assert stmt.units == "inch"
 
-    stmt = RepeatHoleStmt.from_excellon('R0004X015Y32',
-                                        FileSettings(zeros='leading',
-                                                     units='metric'))
-    assert_equal(stmt.units, 'metric')
+    stmt = RepeatHoleStmt.from_excellon(
+        "R0004X015Y32", FileSettings(zeros="leading", units="metric")
+    )
+    assert stmt.units == "metric"
 
 
 def test_repeatholestmt_dump():
-    line = 'R4X015Y32'
+    line = "R4X015Y32"
     stmt = RepeatHoleStmt.from_excellon(line, FileSettings())
-    assert_equal(stmt.to_excellon(FileSettings()), line)
+    assert stmt.to_excellon(FileSettings()) == line
 
 
 def test_repeatholestmt_conversion():
-    line = 'R4X0254Y254'
+    line = "R4X0254Y254"
     settings = FileSettings()
-    settings.units = 'metric'
+    settings.units = "metric"
     stmt = RepeatHoleStmt.from_excellon(line, settings)
 
     # No effect
     stmt.to_metric()
-    assert_equal(stmt.xdelta, 2.54)
-    assert_equal(stmt.ydelta, 25.4)
+    assert stmt.xdelta == 2.54
+    assert stmt.ydelta == 25.4
 
     stmt.to_inch()
-    assert_equal(stmt.units, 'inch')
-    assert_equal(stmt.xdelta, 0.1)
-    assert_equal(stmt.ydelta, 1.)
+    assert stmt.units == "inch"
+    assert stmt.xdelta == 0.1
+    assert stmt.ydelta == 1.0
 
     # no effect
     stmt.to_inch()
-    assert_equal(stmt.xdelta, 0.1)
-    assert_equal(stmt.ydelta, 1.)
+    assert stmt.xdelta == 0.1
+    assert stmt.ydelta == 1.0
 
-    line = 'R4X01Y1'
-    settings.units = 'inch'
+    line = "R4X01Y1"
+    settings.units = "inch"
     stmt = RepeatHoleStmt.from_excellon(line, settings)
 
     # no effect
     stmt.to_inch()
-    assert_equal(stmt.xdelta, 1.)
-    assert_equal(stmt.ydelta, 10.)
+    assert stmt.xdelta == 1.0
+    assert stmt.ydelta == 10.0
 
     stmt.to_metric()
-    assert_equal(stmt.units, 'metric')
-    assert_equal(stmt.xdelta, 25.4)
-    assert_equal(stmt.ydelta, 254.)
+    assert stmt.units == "metric"
+    assert stmt.xdelta == 25.4
+    assert stmt.ydelta == 254.0
 
     # No effect
     stmt.to_metric()
-    assert_equal(stmt.xdelta, 25.4)
-    assert_equal(stmt.ydelta, 254.)
+    assert stmt.xdelta == 25.4
+    assert stmt.ydelta == 254.0
 
 
 def test_repeathole_str():
-    stmt = RepeatHoleStmt.from_excellon('R4X015Y32', FileSettings())
-    assert_equal(str(stmt), '<Repeat Hole: 4 times, offset X: 1.5 Y: 32>')
+    stmt = RepeatHoleStmt.from_excellon("R4X015Y32", FileSettings())
+    assert str(stmt) == "<Repeat Hole: 4 times, offset X: 1.5 Y: 32>"
 
 
 def test_commentstmt_factory():
     """ Test CommentStmt factory method
     """
-    line = ';Layer_Color=9474304'
+    line = ";Layer_Color=9474304"
     stmt = CommentStmt.from_excellon(line)
-    assert_equal(stmt.comment, line[1:])
+    assert stmt.comment == line[1:]
 
-    line = ';FILE_FORMAT=2:5'
+    line = ";FILE_FORMAT=2:5"
     stmt = CommentStmt.from_excellon(line)
-    assert_equal(stmt.comment, line[1:])
+    assert stmt.comment == line[1:]
 
-    line = ';TYPE=PLATED'
+    line = ";TYPE=PLATED"
     stmt = CommentStmt.from_excellon(line)
-    assert_equal(stmt.comment, line[1:])
+    assert stmt.comment == line[1:]
 
 
 def test_commentstmt_dump():
     """ Test CommentStmt to_excellon()
     """
-    lines = [';Layer_Color=9474304', ';FILE_FORMAT=2:5', ';TYPE=PLATED', ]
+    lines = [";Layer_Color=9474304", ";FILE_FORMAT=2:5", ";TYPE=PLATED"]
     for line in lines:
         stmt = CommentStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_header_begin_stmt():
     stmt = HeaderBeginStmt()
-    assert_equal(stmt.to_excellon(None), 'M48')
+    assert stmt.to_excellon(None) == "M48"
 
 
 def test_header_end_stmt():
     stmt = HeaderEndStmt()
-    assert_equal(stmt.to_excellon(None), 'M95')
+    assert stmt.to_excellon(None) == "M95"
 
 
 def test_rewindstop_stmt():
     stmt = RewindStopStmt()
-    assert_equal(stmt.to_excellon(None), '%')
+    assert stmt.to_excellon(None) == "%"
 
 
 def test_z_axis_rout_position_stmt():
     stmt = ZAxisRoutPositionStmt()
-    assert_equal(stmt.to_excellon(None), 'M15')
+    assert stmt.to_excellon(None) == "M15"
 
 
 def test_retract_with_clamping_stmt():
     stmt = RetractWithClampingStmt()
-    assert_equal(stmt.to_excellon(None), 'M16')
+    assert stmt.to_excellon(None) == "M16"
 
 
 def test_retract_without_clamping_stmt():
     stmt = RetractWithoutClampingStmt()
-    assert_equal(stmt.to_excellon(None), 'M17')
+    assert stmt.to_excellon(None) == "M17"
 
 
 def test_cutter_compensation_off_stmt():
     stmt = CutterCompensationOffStmt()
-    assert_equal(stmt.to_excellon(None), 'G40')
+    assert stmt.to_excellon(None) == "G40"
 
 
 def test_cutter_compensation_left_stmt():
     stmt = CutterCompensationLeftStmt()
-    assert_equal(stmt.to_excellon(None), 'G41')
+    assert stmt.to_excellon(None) == "G41"
 
 
 def test_cutter_compensation_right_stmt():
     stmt = CutterCompensationRightStmt()
-    assert_equal(stmt.to_excellon(None), 'G42')
+    assert stmt.to_excellon(None) == "G42"
 
 
 def test_endofprogramstmt_factory():
-    settings = FileSettings(units='inch')
-    stmt = EndOfProgramStmt.from_excellon('M30X01Y02', settings)
-    assert_equal(stmt.x, 1.)
-    assert_equal(stmt.y, 2.)
-    assert_equal(stmt.units, 'inch')
-    settings.units = 'metric'
-    stmt = EndOfProgramStmt.from_excellon('M30X01', settings)
-    assert_equal(stmt.x, 1.)
-    assert_equal(stmt.y, None)
-    assert_equal(stmt.units, 'metric')
-    stmt = EndOfProgramStmt.from_excellon('M30Y02', FileSettings())
-    assert_equal(stmt.x, None)
-    assert_equal(stmt.y, 2.)
+    settings = FileSettings(units="inch")
+    stmt = EndOfProgramStmt.from_excellon("M30X01Y02", settings)
+    assert stmt.x == 1.0
+    assert stmt.y == 2.0
+    assert stmt.units == "inch"
+    settings.units = "metric"
+    stmt = EndOfProgramStmt.from_excellon("M30X01", settings)
+    assert stmt.x == 1.0
+    assert stmt.y == None
+    assert stmt.units == "metric"
+    stmt = EndOfProgramStmt.from_excellon("M30Y02", FileSettings())
+    assert stmt.x == None
+    assert stmt.y == 2.0
 
 
 def test_endofprogramStmt_dump():
-    lines = ['M30X01Y02', ]
+    lines = ["M30X01Y02"]
     for line in lines:
         stmt = EndOfProgramStmt.from_excellon(line, FileSettings())
-        assert_equal(stmt.to_excellon(FileSettings()), line)
+        assert stmt.to_excellon(FileSettings()) == line
 
 
 def test_endofprogramstmt_conversion():
     settings = FileSettings()
-    settings.units = 'metric'
-    stmt = EndOfProgramStmt.from_excellon('M30X0254Y254', settings)
+    settings.units = "metric"
+    stmt = EndOfProgramStmt.from_excellon("M30X0254Y254", settings)
     # No effect
     stmt.to_metric()
-    assert_equal(stmt.x, 2.54)
-    assert_equal(stmt.y, 25.4)
+    assert stmt.x == 2.54
+    assert stmt.y == 25.4
 
     stmt.to_inch()
-    assert_equal(stmt.units, 'inch')
-    assert_equal(stmt.x, 0.1)
-    assert_equal(stmt.y, 1.0)
+    assert stmt.units == "inch"
+    assert stmt.x == 0.1
+    assert stmt.y == 1.0
 
     # No effect
     stmt.to_inch()
-    assert_equal(stmt.x, 0.1)
-    assert_equal(stmt.y, 1.0)
+    assert stmt.x == 0.1
+    assert stmt.y == 1.0
 
-    settings.units = 'inch'
-    stmt = EndOfProgramStmt.from_excellon('M30X01Y1', settings)
+    settings.units = "inch"
+    stmt = EndOfProgramStmt.from_excellon("M30X01Y1", settings)
 
     # No effect
     stmt.to_inch()
-    assert_equal(stmt.x, 1.)
-    assert_equal(stmt.y, 10.0)
+    assert stmt.x == 1.0
+    assert stmt.y == 10.0
 
     stmt.to_metric()
-    assert_equal(stmt.units, 'metric')
-    assert_equal(stmt.x, 25.4)
-    assert_equal(stmt.y, 254.)
+    assert stmt.units == "metric"
+    assert stmt.x == 25.4
+    assert stmt.y == 254.0
 
     # No effect
     stmt.to_metric()
-    assert_equal(stmt.x, 25.4)
-    assert_equal(stmt.y, 254.)
+    assert stmt.x == 25.4
+    assert stmt.y == 254.0
 
 
 def test_endofprogramstmt_offset():
     stmt = EndOfProgramStmt(1, 1)
     stmt.offset()
-    assert_equal(stmt.x, 1)
-    assert_equal(stmt.y, 1)
+    assert stmt.x == 1
+    assert stmt.y == 1
     stmt.offset(1, 0)
-    assert_equal(stmt.x, 2.)
-    assert_equal(stmt.y, 1.)
+    assert stmt.x == 2.0
+    assert stmt.y == 1.0
     stmt.offset(0, 1)
-    assert_equal(stmt.x, 2.)
-    assert_equal(stmt.y, 2.)
+    assert stmt.x == 2.0
+    assert stmt.y == 2.0
 
 
 def test_unitstmt_factory():
     """ Test UnitStmt factory method
     """
-    line = 'INCH,LZ'
+    line = "INCH,LZ"
     stmt = UnitStmt.from_excellon(line)
-    assert_equal(stmt.units, 'inch')
-    assert_equal(stmt.zeros, 'leading')
+    assert stmt.units == "inch"
+    assert stmt.zeros == "leading"
 
-    line = 'INCH,TZ'
+    line = "INCH,TZ"
     stmt = UnitStmt.from_excellon(line)
-    assert_equal(stmt.units, 'inch')
-    assert_equal(stmt.zeros, 'trailing')
+    assert stmt.units == "inch"
+    assert stmt.zeros == "trailing"
 
-    line = 'METRIC,LZ'
+    line = "METRIC,LZ"
     stmt = UnitStmt.from_excellon(line)
-    assert_equal(stmt.units, 'metric')
-    assert_equal(stmt.zeros, 'leading')
+    assert stmt.units == "metric"
+    assert stmt.zeros == "leading"
 
-    line = 'METRIC,TZ'
+    line = "METRIC,TZ"
     stmt = UnitStmt.from_excellon(line)
-    assert_equal(stmt.units, 'metric')
-    assert_equal(stmt.zeros, 'trailing')
+    assert stmt.units == "metric"
+    assert stmt.zeros == "trailing"
 
 
 def test_unitstmt_dump():
     """ Test UnitStmt to_excellon()
     """
-    lines = ['INCH,LZ', 'INCH,TZ', 'METRIC,LZ', 'METRIC,TZ', ]
+    lines = ["INCH,LZ", "INCH,TZ", "METRIC,LZ", "METRIC,TZ"]
     for line in lines:
         stmt = UnitStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_unitstmt_conversion():
-    stmt = UnitStmt.from_excellon('METRIC,TZ')
+    stmt = UnitStmt.from_excellon("METRIC,TZ")
     stmt.to_inch()
-    assert_equal(stmt.units, 'inch')
+    assert stmt.units == "inch"
 
-    stmt = UnitStmt.from_excellon('INCH,TZ')
+    stmt = UnitStmt.from_excellon("INCH,TZ")
     stmt.to_metric()
-    assert_equal(stmt.units, 'metric')
+    assert stmt.units == "metric"
 
 
 def test_incrementalmode_factory():
     """ Test IncrementalModeStmt factory method
     """
-    line = 'ICI,ON'
+    line = "ICI,ON"
     stmt = IncrementalModeStmt.from_excellon(line)
-    assert_equal(stmt.mode, 'on')
+    assert stmt.mode == "on"
 
-    line = 'ICI,OFF'
+    line = "ICI,OFF"
     stmt = IncrementalModeStmt.from_excellon(line)
-    assert_equal(stmt.mode, 'off')
+    assert stmt.mode == "off"
 
 
 def test_incrementalmode_dump():
     """ Test IncrementalModeStmt to_excellon()
     """
-    lines = ['ICI,ON', 'ICI,OFF', ]
+    lines = ["ICI,ON", "ICI,OFF"]
     for line in lines:
         stmt = IncrementalModeStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_incrementalmode_validation():
     """ Test IncrementalModeStmt input validation
     """
-    assert_raises(ValueError, IncrementalModeStmt, 'OFF-ISH')
+    pytest.raises(ValueError, IncrementalModeStmt, "OFF-ISH")
 
 
 def test_versionstmt_factory():
     """ Test VersionStmt factory method
     """
-    line = 'VER,1'
+    line = "VER,1"
     stmt = VersionStmt.from_excellon(line)
-    assert_equal(stmt.version, 1)
+    assert stmt.version == 1
 
-    line = 'VER,2'
+    line = "VER,2"
     stmt = VersionStmt.from_excellon(line)
-    assert_equal(stmt.version, 2)
+    assert stmt.version == 2
 
 
 def test_versionstmt_dump():
     """ Test VersionStmt to_excellon()
     """
-    lines = ['VER,1', 'VER,2', ]
+    lines = ["VER,1", "VER,2"]
     for line in lines:
         stmt = VersionStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_versionstmt_validation():
     """ Test VersionStmt input validation
     """
-    assert_raises(ValueError, VersionStmt, 3)
+    pytest.raises(ValueError, VersionStmt, 3)
 
 
 def test_formatstmt_factory():
     """ Test FormatStmt factory method
     """
-    line = 'FMAT,1'
+    line = "FMAT,1"
     stmt = FormatStmt.from_excellon(line)
-    assert_equal(stmt.format, 1)
+    assert stmt.format == 1
 
-    line = 'FMAT,2'
+    line = "FMAT,2"
     stmt = FormatStmt.from_excellon(line)
-    assert_equal(stmt.format, 2)
+    assert stmt.format == 2
 
 
 def test_formatstmt_dump():
     """ Test FormatStmt to_excellon()
     """
-    lines = ['FMAT,1', 'FMAT,2', ]
+    lines = ["FMAT,1", "FMAT,2"]
     for line in lines:
         stmt = FormatStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_formatstmt_validation():
     """ Test FormatStmt input validation
     """
-    assert_raises(ValueError, FormatStmt, 3)
+    pytest.raises(ValueError, FormatStmt, 3)
 
 
 def test_linktoolstmt_factory():
     """ Test LinkToolStmt factory method
     """
-    line = '1/2/3/4'
+    line = "1/2/3/4"
     stmt = LinkToolStmt.from_excellon(line)
-    assert_equal(stmt.linked_tools, [1, 2, 3, 4])
+    assert stmt.linked_tools == [1, 2, 3, 4]
 
-    line = '01/02/03/04'
+    line = "01/02/03/04"
     stmt = LinkToolStmt.from_excellon(line)
-    assert_equal(stmt.linked_tools, [1, 2, 3, 4])
+    assert stmt.linked_tools == [1, 2, 3, 4]
 
 
 def test_linktoolstmt_dump():
     """ Test LinkToolStmt to_excellon()
     """
-    lines = ['1/2/3/4', '5/6/7', ]
+    lines = ["1/2/3/4", "5/6/7"]
     for line in lines:
         stmt = LinkToolStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_measmodestmt_factory():
     """ Test MeasuringModeStmt factory method
     """
-    line = 'M72'
+    line = "M72"
     stmt = MeasuringModeStmt.from_excellon(line)
-    assert_equal(stmt.units, 'inch')
+    assert stmt.units == "inch"
 
-    line = 'M71'
+    line = "M71"
     stmt = MeasuringModeStmt.from_excellon(line)
-    assert_equal(stmt.units, 'metric')
+    assert stmt.units == "metric"
 
 
 def test_measmodestmt_dump():
     """ Test MeasuringModeStmt to_excellon()
     """
-    lines = ['M71', 'M72', ]
+    lines = ["M71", "M72"]
     for line in lines:
         stmt = MeasuringModeStmt.from_excellon(line)
-        assert_equal(stmt.to_excellon(), line)
+        assert stmt.to_excellon() == line
 
 
 def test_measmodestmt_validation():
     """ Test MeasuringModeStmt input validation
     """
-    assert_raises(ValueError, MeasuringModeStmt.from_excellon, 'M70')
-    assert_raises(ValueError, MeasuringModeStmt, 'millimeters')
+    pytest.raises(ValueError, MeasuringModeStmt.from_excellon, "M70")
+    pytest.raises(ValueError, MeasuringModeStmt, "millimeters")
 
 
 def test_measmodestmt_conversion():
-    line = 'M72'
+    line = "M72"
     stmt = MeasuringModeStmt.from_excellon(line)
-    assert_equal(stmt.units, 'inch')
+    assert stmt.units == "inch"
     stmt.to_metric()
-    assert_equal(stmt.units, 'metric')
+    assert stmt.units == "metric"
 
-    line = 'M71'
+    line = "M71"
     stmt = MeasuringModeStmt.from_excellon(line)
-    assert_equal(stmt.units, 'metric')
+    assert stmt.units == "metric"
     stmt.to_inch()
-    assert_equal(stmt.units, 'inch')
+    assert stmt.units == "inch"
 
 
 def test_routemode_stmt():
     stmt = RouteModeStmt()
-    assert_equal(stmt.to_excellon(FileSettings()), 'G00')
+    assert stmt.to_excellon(FileSettings()) == "G00"
 
 
 def test_linearmode_stmt():
     stmt = LinearModeStmt()
-    assert_equal(stmt.to_excellon(FileSettings()), 'G01')
+    assert stmt.to_excellon(FileSettings()) == "G01"
 
 
 def test_drillmode_stmt():
     stmt = DrillModeStmt()
-    assert_equal(stmt.to_excellon(FileSettings()), 'G05')
+    assert stmt.to_excellon(FileSettings()) == "G05"
 
 
 def test_absolutemode_stmt():
     stmt = AbsoluteModeStmt()
-    assert_equal(stmt.to_excellon(FileSettings()), 'G90')
+    assert stmt.to_excellon(FileSettings()) == "G90"
 
 
 def test_unknownstmt():
-    stmt = UnknownStmt('TEST')
-    assert_equal(stmt.stmt, 'TEST')
-    assert_equal(str(stmt), '<Unknown Statement: TEST>')
+    stmt = UnknownStmt("TEST")
+    assert stmt.stmt == "TEST"
+    assert str(stmt) == "<Unknown Statement: TEST>"
 
 
 def test_unknownstmt_dump():
-    stmt = UnknownStmt('TEST')
-    assert_equal(stmt.to_excellon(FileSettings()), 'TEST')
+    stmt = UnknownStmt("TEST")
+    assert stmt.to_excellon(FileSettings()) == "TEST"