Add test

Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>

test/blackbox-tests/test-cases/deprecated-library-name/run.t

@@ -93,3 +93,162 @@ that wasn't found:
   Error: Library "a" not found.
   Hint: try: dune external-lib-deps --missing c/prog.exe
   [1]
+
+Test that we can migrate top-level libraries
+--------------------------------------------
+
+  $ mkdir d
+
+First the motivating case.
+
+  $ cat >d/dune-project <<EOF
+  > (lang dune 2.0)
+  > (package (name menhir) (deprecated_package_names menhirLib menhirSdk))
+  > EOF
+
+  $ cat >d/dune <<EOF
+  > (rule (with-stdout-to lib.ml (progn)))
+  > (library
+  >  (name menhirLib)
+  >  (public_name menhir.lib)
+  >  (modules lib))
+  > (deprecated_library_name
+  >  (old_public_name menhirLib)
+  >  (new_public_name menhir.lib))
+  > (rule (with-stdout-to sdk.ml (echo "let version = ()")))
+  > (library
+  >  (name menhirSdk)
+  >  (public_name menhir.sdk)
+  >  (modules sdk))
+  > (deprecated_library_name
+  >  (old_public_name menhirSdk)
+  >  (new_public_name menhir.sdk))
+  > EOF
+
+  $ cd d && dune build --root . @install
+  $ find d/_build/install/default -name 'META*' -exec echo {} \; -exec cat {} \;
+  d/_build/install/default/lib/menhirSdk/META
+  requires = "menhir.sdk"
+  d/_build/install/default/lib/menhirLib/META
+  requires = "menhir.lib"
+  d/_build/install/default/lib/menhir/META
+  package "lib" (
+    directory = "lib"
+    description = ""
+    requires = ""
+    archive(byte) = "menhirLib.cma"
+    archive(native) = "menhirLib.cmxa"
+    plugin(byte) = "menhirLib.cma"
+    plugin(native) = "menhirLib.cmxs"
+  )
+  package "sdk" (
+    directory = "sdk"
+    description = ""
+    requires = ""
+    archive(byte) = "menhirSdk.cma"
+    archive(native) = "menhirSdk.cmxa"
+    plugin(byte) = "menhirSdk.cma"
+    plugin(native) = "menhirSdk.cmxs"
+  )
+
+Check that we can use the short name in library dependencies.
+
+  $ cat >>d/dune <<EOF
+  > (rule (with-stdout-to use.ml (echo "let _ = MenhirSdk.Sdk.version")))
+  > (library
+  >  (name foo)
+  >  (public_name menhir.foo)
+  >  (libraries menhirSdk menhirLib)
+  >  (modules use))
+  > EOF
+
+  $ cd d && dune build --root . @all
+
+Checks that we can migrate top-level libraries across packages.
+
+  $ cat >d/dune-project <<EOF
+  > (lang dune 2.0)
+  > (package (name p) (deprecated_package_names top1 top2))
+  > (package (name q))
+  > EOF
+
+  $ cat >d/dune <<EOF
+  > (rule (with-stdout-to foo.ml (progn)))
+  > (library
+  >  (name foo)
+  >  (public_name q.bar)
+  >  (modules foo))
+  > (deprecated_library_name
+  >  (old_public_name top1)
+  >  (new_public_name q.bar))
+
+  $ cd d && dune build --root . @install
+  $ cat d/_build/install/default/lib/top1/META
+  requires = "q.bar"
+
+Check that we can do it when the name of the new library is the same as the
+old public name:
+
+  $ cat >d/dune <<EOF
+  > (rule (with-stdout-to bar.ml (progn)))
+  > (library
+  >  (name top2)
+  >  (public_name q.top2)
+  >  (modules bar))
+  > (deprecated_library_name
+  >  (old_public_name top2)
+  >  (new_public_name q.top2))
+  > EOF
+
+  $ cd d && dune build --root . @all
+  $ cat d/_build/install/default/lib/top2/META
+  requires = "q.top2"
+
+We check that there is an error when there is an actual ambiguity:
+
+  $ cat >d/dune <<EOF
+  > (rule (with-stdout-to bar.ml (progn)))
+  > (rule (with-stdout-to bar2.ml (progn)))
+  > (library
+  >  (name top2)
+  >  (public_name q.top2)
+  >  (modules bar))
+  > (library
+  >  (name top3)
+  >  (public_name q.top3)
+  >  (modules bar2))
+  > (deprecated_library_name
+  >  (old_public_name top2)
+  >  (new_public_name q.top3))
+  > EOF
+
+  $ cd d && dune build --root . @all
+  Error: Library top2 is defined twice:
+  - dune:13
+  - dune:5
+  [1]
+
+Another case of ambiguity:
+
+  $ cat >d/dune-project <<EOF
+  > (lang dune 2.0)
+  > (package (name p))
+  > (package (name q) (deprecated_package_names p))
+  > EOF
+
+  $ cat >d/dune <<EOF
+  > (rule (with-stdout-to bar.ml (progn)))
+  > (library
+  >  (name p)
+  >  (public_name p)
+  >  (modules bar))
+  > (deprecated_library_name
+  >  (old_public_name p)
+  >  (new_public_name p))
+  > EOF
+
+  $ cd d && dune build --root . --display=short @all
+  Error: Package name p is defined twice:
+  - dune-project:3
+  - dune-project:2
+  [1]