File size: 4,420 Bytes
784ee2c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | #!/usr/bin/env python3
import os
import sys
import math
import unittest
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "utils")))
from physical_data import PhysicalData
class PhysicalDataTest(unittest.TestCase):
"""Unit test for PhysicalData class"""
def setUp(self):
"""Sets up base_data with example config data"""
self._threshold = 0.001
def test_empty_physical(self):
"""Tests physical field defaults"""
physical = PhysicalData()
self.assertIsNone(physical.get_width())
self.assertIsNone(physical.get_height())
self.assertIsNone(physical.get_width(True))
self.assertIsNone(physical.get_height(True))
self.assertIsNone(physical.get_pin_pitch())
self.assertIsNone(physical.get_group_pitch())
def test_set_extents_and_snapping(self):
"""Tests physical field extents and snapping results"""
physical = PhysicalData()
width = 123.4
height = 456.5
snapped_width = math.ceil(width)
snapped_height = math.ceil(height)
# Can't snap before setting extents
with self.assertRaises(Exception):
physical.snap_to_grid(1000, 1000)
# Set extents and verify values
physical.set_extents(width, height)
self.assertEqual(physical.get_width(False), width)
self.assertEqual(physical.get_height(False), height)
self.assertEqual(physical.get_area(False), width * height)
# Not snapped yet, so should return non-snapped value
self.assertEqual(physical.get_width(True), width)
self.assertEqual(physical.get_height(True), height)
self.assertEqual(physical.get_area(True), width * height)
# Snap to 1um
physical.snap_to_grid(1000, 1000)
# Non-snapped should return original
self.assertEqual(physical.get_width(False), width)
self.assertEqual(physical.get_height(False), height)
self.assertEqual(physical.get_area(False), width * height)
self.assertEqual(physical.get_width(True), snapped_width)
self.assertEqual(physical.get_height(True), snapped_height)
self.assertEqual(physical.get_area(True), snapped_width * snapped_height)
def test_pin_pitches_exact(self):
"""Tests get_pin_pitches the height exactly fits the available tracks"""
num_pins = 521
min_pin_pitch = 0.046
y_offset = min_pin_pitch
# number of pins + offset at the top and bottom
height = round(min_pin_pitch * (num_pins + 2), 2)
print(height)
physical = PhysicalData()
physical.set_extents(height, height)
physical.snap_to_grid(1, 1)
physical.set_pin_pitches("bogus", num_pins, min_pin_pitch, y_offset)
# just enough space, so pin pitch is the minimum pitch and there's no
# group pitch
self.assertAlmostEqual(
physical.get_pin_pitch(), min_pin_pitch, delta=self._threshold
)
self.assertAlmostEqual(physical.get_group_pitch(), 0, delta=self._threshold)
def test_pin_pitches_exception(self):
"""Tests get_pin_pitches when there's no enough room for the pins"""
num_pins = 523
min_pin_pitch = 0.048
y_offset = 0.048
height = 21.0
height_that_fits = height + 5
physical = PhysicalData()
# Can't set pin pitches before setting height
with self.assertRaises(Exception):
physical.set_pin_pitches("bogus", num_pins, min_pin_pitch, y_offset)
# Try again after setting height
physical.set_extents(height, height)
physical.snap_to_grid(1, 1)
# Not enough height to fit the pins 523 * 0.048 == 25.104
with self.assertRaises(Exception):
physical.set_pin_pitches("bogus", num_pins, min_pin_pitch, y_offset)
# update height to something that fits
physical.set_extents(height, height_that_fits)
physical.snap_to_grid(1, 1)
physical.set_pin_pitches("bogus", num_pins, min_pin_pitch, y_offset)
# just enough space, so pin pitch is the minimum pitch
self.assertAlmostEqual(
physical.get_pin_pitch(), min_pin_pitch, delta=self._threshold
)
self.assertAlmostEqual(physical.get_group_pitch(), 0.24, delta=self._threshold)
if __name__ == "__main__":
unittest.main()
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