def test_point_collection(self):
dt1 = datetime.date(2007, 12, 5)
p1 = Point()
p1.time = dt1
p1.location = sPoint(-180, -90, 0)
member1 = Member(value=5.4, unit='m', name='Sea Surface Height', description='sea height', standard='sea_surface_height')
member2 = Member(value=8.1, unit='m', name='Wave Height', description='wave height', standard='wave_height')
p1.add_member(member1)
p1.add_member(member2)
dt2 = datetime.date(2008, 2, 14)
p2 = Point()
p2.time = dt2
p2.location = sPoint(-120, 50, 10)
member3 = Member(value=5.4, unit='m', name='Sea Surface Height', description='sea height', standard='sea_surface_height')
member4 = Member(value=8.1, unit='m', name='Wave Height', description='wave height', standard='wave_height')
p2.add_member(member3)
p2.add_member(member4)
pc = PointCollection(elements=[p1,p2])
pc.calculate_bounds()
assert pc.size == 2
assert pc.time_range[0] == dt1
assert pc.time_range[-1] == dt2
assert pc.depth_range[0] == p1.location.z
assert pc.depth_range[-1] == p2.location.z
assert pc.upper_right().equals(sPoint(p2.location.x, p2.location.y))
assert pc.lower_left().equals(sPoint(p1.location.x, p1.location.y))
