vim command to map keys to command that maps keys

Question

Background: I'm using this mapping map ,r :! bundle exec ruby %<CR> all the time to easily run test file I'm currently editing. However I also do:

map ,t :! bundle exec ruby test/integration/some_integration_test.rb<CR>

so that I can run this particular integration test with two key strokes while working on some other file. It has hard-coded path, when I move to some other area of the application I type above command with another integration test file path.

How to make a command that creates such mapping automatically?

map ,T :map ,t :! bundle exec ruby %<CR> won't work because it doesn't expand % while creating the mapping, so ,t will always run current file (while I want it to run file I was editing at the time of creating the mapping).

[EDIT]: Slightly adjusted solution from the answer:

nnoremap ,r :! bundle exec ruby %<CR>
nnoremap ,T :let g:testfile = expand('%:p')
nnoremap ,t :! bundle exec ruby <C-r><C-r>=g:testfile<CR><CR>

• ,r always runs file under cursor
• ,T saves current file path under in a variable for running later
• ,t runs file path stored previously

Answer 1

Just save the current file name (best with a full absolute path to be immune against changes to the current directory; the :p modifier does that) in a variable, and insert the variable instead of % via <C-r>:

:noremap ,r :let g:testfile = expand('%:p')<Bar>! bundle exec ruby %<CR>
:noremap ,t :! bundle exec ruby <C-r><C-r>=g:testfile<CR><CR>

^{PS: I used :noremap, because that is generally safer and should be the first choice unless you really need remapping to occur.}

Answer 2

execute ":nnoremap ,t :! bundle exec ruby ".shellescape(expand('%:p'))."<CR>"

creates a ,t mapping that will execute your test on what is the current file at the time of execution.

But each time you do that you'll lose the previous ,t. I'm not sure that's what you want to do.

• Wojtek Kruszewski: "But each time you do that you'll lose the previous ,t. I'm not sure that's what you want to do." - yes that's exactly what I want