Column Order Checking

[gowerc]

Closes #32

In particular please note the following design decisions of the initial implementation:

• Takes the order of the columns prior to removing any for any reason (e.g. mode differences)
• Removes columns that don't exist in both datasets from the printed output however the column order is derived before the columns are removed
• The test is enabled by default with an additional option to disable it

[github-actions]

Code Coverage Summary

Filename                Stmts    Miss  Cover    Missing
--------------------  -------  ------  -------  --------------------------
R/ascii_tables.R          105       8  92.38%   10, 148, 158, 163-166, 211
R/cast_variables.R         49       0  100.00%
R/diffdf.R                188      18  90.43%   358-375, 402
R/generate_keyname.R       10       1  90.00%   16
R/identify.R              152       8  94.74%   283-290
R/is_different.R           52       0  100.00%
R/issuerows.R              40       0  100.00%
R/issues.R                 17       1  94.12%   51
R/misc_functions.R         34       2  94.12%   9, 13
R/print.R                  20       0  100.00%
TOTAL                     667      38  94.30%

Results for commit: 458362d

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

  1 files   12 suites   6s ⏱️
 49 tests  48 ✅ 1 💤 0 ❌
573 runs  566 ✅ 7 💤 0 ❌

Results for commit 458362d.

♻️ This comment has been updated with latest results.

[kieranjmartin]

I think you should include testing of the full diffdf. I did test it myself quickly, but if you include columns that aren't in both, and also if you include a key, this could theoretically break this. Right now it seems to handle it, just thinking about future proofing this functionality

[gowerc]

@kieranjmartin - I think I've addressed all your comments now. Only thing I haven't been able to do is setup a test for out of order columns if one of they keys is missing due to #113 . That being said I do have a full test where keys are specified and feel comfortable that this is working as expected.