Testing different rewrite cases

[thomasballinger]

• Test cases:
  • same screen, no line wrapping
    • write test
    • test passing
  • test case: same screen, line wrapping
    • write test
    • test passing
  • test case: scroll down, no line wrapping
    • write test
    • test passing
  • test case: scroll down, line wrapping
    • write test
    • test passing
  • test case: scroll off of the screen, no line wrapping
    • write test
    • test passing
  • test case: scroll off the screen, line wrapping
    • write test
    • test passing
  • test case: undo would move cursor above screen, line wrapping
    • write test
    • test passing
  • test case: screen resize
    • write test
    • test passing
  • test case: non-1 character widths