def setUp(self):
self.lower = 0
self.upper = 2
self.open_interval = Interval(
Point(self.lower, True),
Point(self.upper, True))
self.closed_interval = Interval(
Point(self.lower, False),
Point(self.upper, False))
self.half_open_interval = Interval(
Point(self.lower, True),
Point(self.upper, False))
self.disjoint_with_open = Interval(
Point(self.lower - 1, True),
Point(self.lower, True)
)
self.sort_of_intersects_with_open = Interval(
Point(self.lower - 1, True),
Point(self.lower, False)
)
self.merged = Interval(
Point(self.lower - 1, True),
Point(self.upper, True)
)
self.empty_interval = Interval(
Point(self.upper),
Point(self.lower)
)
interval_range = self.upper - self.lower
self.subset_of_open = Interval(
Point(self.lower + 0.25 * interval_range),
Point(self.lower + 0.75 * interval_range)
)
def setUp(self):
self.lower = 0
self.upper = 2
self.open_interval = Interval(Point(self.lower, True),
Point(self.upper, True))
self.closed_interval = Interval(Point(self.lower, False),
Point(self.upper, False))
self.half_open_interval = Interval(Point(self.lower, True),
Point(self.upper, False))
self.disjoint_with_open = Interval(Point(self.lower - 1, True),
Point(self.lower, True))
self.sort_of_intersects_with_open = Interval(
Point(self.lower - 1, True), Point(self.lower, False))
self.merged = Interval(Point(self.lower - 1, True),
Point(self.upper, True))
self.empty_interval = Interval(Point(self.upper), Point(self.lower))
interval_range = self.upper - self.lower
self.subset_of_open = Interval(
Point(self.lower + 0.25 * interval_range),
Point(self.lower + 0.75 * interval_range))
class TestInterval(TestCase):
def setUp(self):
self.lower = 0
self.upper = 2
self.open_interval = Interval(Point(self.lower, True),
Point(self.upper, True))
self.closed_interval = Interval(Point(self.lower, False),
Point(self.upper, False))
self.half_open_interval = Interval(Point(self.lower, True),
Point(self.upper, False))
self.disjoint_with_open = Interval(Point(self.lower - 1, True),
Point(self.lower, True))
self.sort_of_intersects_with_open = Interval(
Point(self.lower - 1, True), Point(self.lower, False))
self.merged = Interval(Point(self.lower - 1, True),
Point(self.upper, True))
self.empty_interval = Interval(Point(self.upper), Point(self.lower))
interval_range = self.upper - self.lower
self.subset_of_open = Interval(
Point(self.lower + 0.25 * interval_range),
Point(self.lower + 0.75 * interval_range))
def test_knows_status(self):
self.assertTrue(self.open_interval.is_open)
self.assertTrue(self.closed_interval.is_closed)
self.assertFalse(self.half_open_interval.is_closed)
self.assertFalse(self.half_open_interval.is_closed)
def test_endpoint_containment(self):
# open interval contains neither endpoint
self.assertFalse(self.open_interval.contains(self.lower))
self.assertFalse(self.open_interval.contains(self.upper))
# closed interval contains both endpoints
self.assertTrue(self.closed_interval.contains(self.lower))
self.assertTrue(self.closed_interval.contains(self.upper))
# half open interval contains one endpoint
self.assertFalse(self.half_open_interval.contains(self.lower))
self.assertTrue(self.half_open_interval.contains(self.upper))
def test_string(self):
self.assertEqual(str(self.open_interval), "(0, 2)")
self.assertEqual(str(self.closed_interval), "[0, 2]")
self.assertEqual(str(self.half_open_interval), "(0, 2]")
def test_equality(self):
self.assertTrue(self.open_interval == self.open_interval)
self.assertFalse(self.open_interval == self.half_open_interval)
self.assertRaises(NotImplementedError, lambda: self.open_interval == 2)
def test_union(self):
self.assertEqual(
self.open_interval.union(self.sort_of_intersects_with_open),
[self.merged])
self.assertListEqual(self.open_interval.union(self.disjoint_with_open),
[self.disjoint_with_open, self.open_interval])
self.assertListEqual(self.open_interval.union(), [self.open_interval])
self.assertListEqual(self.open_interval.union(self.closed_interval),
[self.closed_interval])
self.assertRaises(NotImplementedError, self.open_interval.union, 3)
def test_intersection(self):
self.assertEqual(
self.open_interval.intersect(self.sort_of_intersects_with_open),
self.empty_interval)
self.assertEqual(self.open_interval.intersect(self.disjoint_with_open),
self.empty_interval)
self.assertEqual(self.open_interval.intersect(self.subset_of_open),
self.subset_of_open)
self.assertEqual(self.open_interval.intersect(self.closed_interval),
self.open_interval)
class TestInterval(TestCase):
def setUp(self):
self.lower = 0
self.upper = 2
self.open_interval = Interval(
Point(self.lower, True),
Point(self.upper, True))
self.closed_interval = Interval(
Point(self.lower, False),
Point(self.upper, False))
self.half_open_interval = Interval(
Point(self.lower, True),
Point(self.upper, False))
self.disjoint_with_open = Interval(
Point(self.lower - 1, True),
Point(self.lower, True)
)
self.sort_of_intersects_with_open = Interval(
Point(self.lower - 1, True),
Point(self.lower, False)
)
self.merged = Interval(
Point(self.lower - 1, True),
Point(self.upper, True)
)
self.empty_interval = Interval(
Point(self.upper),
Point(self.lower)
)
interval_range = self.upper - self.lower
self.subset_of_open = Interval(
Point(self.lower + 0.25 * interval_range),
Point(self.lower + 0.75 * interval_range)
)
def test_knows_status(self):
self.assertTrue(self.open_interval.is_open)
self.assertTrue(self.closed_interval.is_closed)
self.assertFalse(self.half_open_interval.is_closed)
self.assertFalse(self.half_open_interval.is_closed)
def test_endpoint_containment(self):
# open interval contains neither endpoint
self.assertFalse(self.open_interval.contains(self.lower))
self.assertFalse(self.open_interval.contains(self.upper))
# closed interval contains both endpoints
self.assertTrue(self.closed_interval.contains(self.lower))
self.assertTrue(self.closed_interval.contains(self.upper))
# half open interval contains one endpoint
self.assertFalse(self.half_open_interval.contains(self.lower))
self.assertTrue(self.half_open_interval.contains(self.upper))
def test_string(self):
self.assertEqual(
str(self.open_interval),
"(0, 2)")
self.assertEqual(
str(self.closed_interval),
"[0, 2]")
self.assertEqual(
str(self.half_open_interval),
"(0, 2]")
def test_equality(self):
self.assertTrue(self.open_interval == self.open_interval)
self.assertFalse(self.open_interval == self.half_open_interval)
self.assertRaises(NotImplementedError, lambda: self.open_interval == 2)
def test_union(self):
self.assertEqual(self.open_interval.union(self.sort_of_intersects_with_open), [self.merged])
self.assertListEqual(
self.open_interval.union(self.disjoint_with_open),
[self.disjoint_with_open, self.open_interval])
self.assertListEqual(
self.open_interval.union(),
[self.open_interval]
)
self.assertListEqual(
self.open_interval.union(self.closed_interval),
[self.closed_interval]
)
self.assertRaises(NotImplementedError, self.open_interval.union, 3)
def test_intersection(self):
self.assertEqual(self.open_interval.intersect(self.sort_of_intersects_with_open), self.empty_interval)
self.assertEqual(
self.open_interval.intersect(self.disjoint_with_open),
self.empty_interval)
self.assertEqual(
self.open_interval.intersect(self.subset_of_open),
self.subset_of_open
)
self.assertEqual(
self.open_interval.intersect(self.closed_interval),
self.open_interval
)
