def test_cursor_assignment_does_not_exceed_bounds(self):
""" testing that cursors don't overlap or exceed bounds """
f = File()
f.file_lines = ['line: ' + str(i) for i in range(0, 10)]
f.cursor_end = 20
f.cursor_start = 15
self.assertEqual(
f.file_length - 1,
f.cursor_end,
msg='End cursor should match file length when bounds exceed')
self.assertEqual(
f.cursor_end,
f.cursor_start,
msg='start cursor should match end cursor when start overlaps')
f.cursor_start = -10
f.cursor_end = -5
self.assertEqual(
f.cursor_start,
0,
msg='End cursor should match file length when bounds exceed')
self.assertEqual(
f.cursor_end,
f.cursor_start,
msg='end cursor should match start cursor when end overlaps')
f.cursor_end = 4
f.cursor_start = 2
f.cursor_end = 1
self.assertEqual(
f.cursor_end,
f.cursor_start,
msg='end cursor should match start cursor when end overlaps')
def test_cursor_assignment_via_setter_property_works(self):
""" test the cursor assignment functions correctly """
f = File()
f.cursor_start = 1
f.cursor_end = 1
f.file_length = 20
self.assertEqual(f.cursor_start,
0,
msg='Zero Lines, cursor should reset to 0')
self.assertEqual(f.cursor_end,
0,
msg='Zero Lines, cursor should reset to 0')
f.file_lines = ['line: ' + str(i) for i in range(0, 10)]
self.assertEqual(f.file_length,
10,
msg='Ten Lines, length should be 0')