unikernel/duniverse/dune_/test/blackbox-tests/test-cases/melange/library-with-runtime-deps.t

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+Test `melange.runtime_deps` in a private library
+
+  $ cat > dune-project <<EOF
+  > (lang dune 3.8)
+  > (using melange 0.1)
+  > EOF
+
+  $ cat > dune <<EOF
+  > (melange.emit
+  >  (target output)
+  >  (alias mel)
+  >  (libraries foo)
+  >  (emit_stdlib false)
+  >  (preprocess (pps melange.ppx))
+  >  (runtime_deps assets/file.txt))
+  > EOF
+
+  $ mkdir lib
+  $ echo "Some text" > lib/index.txt
+  $ cat > lib/dune <<EOF
+  > (library
+  >  (name foo)
+  >  (modes melange)
+  >  (libraries melange.node)
+  >  (preprocess (pps melange.ppx))
+  >  (melange.runtime_deps index.txt))
+  > EOF
+  $ cat > lib/foo.ml <<EOF
+  > let dirname = [%mel.raw "__dirname"]
+  > let file_path = "./index.txt"
+  > let read_asset () = Node.Fs.readFileSync (dirname ^ "/" ^ file_path) \`utf8
+  > EOF
+
+  $ mkdir assets
+  $ cat > assets/file.txt <<EOF
+  > hello from file
+  > EOF
+
+  $ cat > main.ml <<EOF
+  > let dirname = [%mel.raw "__dirname"]
+  > let file_path = "./assets/file.txt"
+  > let file_content = Node.Fs.readFileSync (dirname ^ "/" ^ file_path) \`utf8
+  > let () = Js.log file_content
+  > let () = Js.log (Foo.read_asset ())
+  > EOF
+
+  $ dune build @mel
+
+The runtime_dep index.txt was copied to the library build folder
+
+  $ ls _build/default/lib
+  foo.ml
+  foo.pp.ml
+  index.txt
+
+The runtime_dep index.txt was copied to the build folder
+
+  $ ls _build/default/output/lib
+  foo.js
+  index.txt
+  $ node _build/default/output/main.js
+  hello from file
+  
+  Some text
+