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test(melange): show (melange.emit ..) doesn't respect -p <PKG> #13521

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Merged
anmonteiro merged 1 commit into from
Feb 1, 2026
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test(melange): show (melange.emit ..) doesn't respect -p <PKG> #13521

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41 changes: 41 additions & 0 deletions test/blackbox-tests/test-cases/melange/melange-runtest-multiple-packages.t
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Original file line number Diff line number Diff line change
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Show interaction of `dune runtest -p ..` and `(melange.emit ..)`

$ cat > dune-project <<EOF
> (lang dune 3.22)
> (using melange 1.0)
> (package (name a))
> (package (name b))
> EOF

$ mkdir a b
$ cat > a/dune <<EOF
> (melange.emit
> (alias runtest)
> (package a)
> (emit_stdlib false)
> (target out))
> EOF
$ cat > a/x.ml <<EOF
> let () = print_endline "hello"
> EOF

$ cat > b/dune <<EOF
> (melange.emit
> (alias runtest)
> (package b)
> (emit_stdlib false)
> (target out))
> EOF
$ cat > b/x.ml <<EOF
> let () = print_endline "hello"
> EOF

Selecting only the package a should not build b

$ dune runtest -p a
$ ls _build/default/b/out/b
x.js

$ dune runtest -p b
$ ls _build/default/b/out/b
x.js
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