55 lines
2.7 KiB
Markdown
55 lines
2.7 KiB
Markdown
I care a lot about being able to automatically check _any_ property about my
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program before it ever runs. However, some things don't have tests yet, either
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because I don't know how to test them or because I've been lazy. I'll at least
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record those here.
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Startup:
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- terminal log shows unit tests running
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Initializing settings:
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- delete app settings, start; window opens running the text editor
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- quit while running the text editor, restart; window opens running the text editor in same position+dimensions
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- quit while editing source (color; no drawings; no selection), restart; window opens editing source in same position+dimensions
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- start out running the text editor, move window, press ctrl+e twice; window is running text editor in same position+dimensions
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- start out editing source, move window, press ctrl+e twice; window is editing source in same position+dimensions
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- no log file; switching to source works
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Code loading:
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* run love with directory; text editor runs
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* run love with zip file; text editor runs
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* How the screen looks. Our tests use a level of indirection to check text and
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graphics printed to screen, but not the precise pixels they translate to.
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- where exactly the cursor is drawn to highlight a given character
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- analogously, how a shape precisely looks as you draw it
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* start out running the text editor, press ctrl+e to edit source, make a change to the source, press ctrl+e twice to return to the source editor; the change should be preserved.
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### Other compromises
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Lua is dynamically typed. Tests can't patch over lack of type-checking.
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* All strings are UTF-8. Bytes within them are not characters. I try to label
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byte offsets with the suffix `_offset`, and character positions as `_pos`.
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For example, `string.sub` should never use a `_pos` to substring, only an
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`_offset`.
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* Some ADT/interface support would be helpful in keeping per-line state in
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sync. Any change to line data should clear line `fragments` and
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`screen_line_starting_pos`.
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* Some inputs get processed in love.textinput and some in love.keypressed.
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Several bugs have arisen due to destructive interference between the two for
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some key chord. I wish I could guarantee that the two sets are disjoint. But
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perhaps I'm not thinking about this right.
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* Like any high-level language, it's easy to accidentally alias two non-scalar
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variables. I wish there was a way to require copy when assigning.
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* I wish I could require pixel coordinates to integers. The editor defensively
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converts input margins to integers.
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* My test harness automatically runs `test_*` methods -- but only at the
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top-level. I wish there was a way to raise warnings if someone defines such
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a function inside a dict somewhere.
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