mte/unikernel/duniverse/dune_/test/blackbox-tests/test-cases/watching/copy-rules.t
2025-11-11 02:07:51 +01:00

81 lines
1.6 KiB
Perl

Test rules that copy source files in file-watching mode.
$ . ./helpers.sh
$ echo '(lang dune 3.0)' > dune-project
$ cat > dune <<EOF
> (rule
> (deps (glob_files *.txt))
> (target summary)
> (action (system "cat %{deps} > %{target}")))
> EOF
$ echo a > a.txt
$ start_dune
$ build summary
Success
$ cat _build/default/summary
a
Add [b.txt] manually. Dune notices this.
$ echo b > b.txt
$ build summary
Success
$ cat _build/default/summary
a
b
Now add [c.txt] via a new rule. Note that we do not request [c.txt] to be built,
only [summary], but Dune still builds it. Presumably, this isn't a bug but a
consequence of using a glob in this directory, which forces all *.txt rules.
$ cat > dune <<EOF
> (rule
> (deps (glob_files *.txt))
> (target summary)
> (action (system "cat %{deps} > %{target}")))
> (rule
> (target c.txt)
> (action (write-file %{target} "c\n")))
> EOF
$ build summary
Success
$ cat _build/default/summary
a
b
c
Dune notices that [d.txt] appears via promotion.
$ mkdir subdir
$ cat > subdir/dune <<EOF
> (rule
> (target d.txt)
> (mode (promote (into ..)))
> (action (write-file %{target} "d\n")))
> EOF
$ build summary subdir/d.txt
Success
$ cat _build/default/summary
a
b
c
d
Note that [d.txt] is here but [c.txt] isn't (it's not promoted).
$ ls *.txt
a.txt
b.txt
d.txt
We're done.
$ stop_dune
Success, waiting for filesystem changes...
Success, waiting for filesystem changes...
Success, waiting for filesystem changes...
Success, waiting for filesystem changes...