unikernel/duniverse/dune_/test/blackbox-tests/test-cases/invalid-package-version.t

@@ -0,0 +1,44 @@
+Invalid package names are reported by Dune.
+We also give a hint for common invalid versions such as foo.1.2.3,
+which can result from a users false assumption from opam.
+
+  $ cat > dune-project <<EOF
+  > (lang dune 3.13)
+  > (package
+  >  (name invalid)
+  >  (allow_empty)
+  >  (depends foo.1.2.3))
+  > EOF
+
+Building doesn't work as the dependency is invalid.
+
+  $ dune build
+  File "dune-project", line 5, characters 10-19:
+  5 |  (depends foo.1.2.3))
+                ^^^^^^^^^
+  Error: "foo.1.2.3" is an invalid package dependency.
+  Package names can contain letters, numbers, '-', '_' and '+', and need to
+  contain at least a letter.
+  Hint: (foo (= 1.2.3)) would be a correct package dependency
+  [1]
+
+We can take this further and add some really invalid characters into the name:
+
+  $ cat > dune-project <<EOF
+  > (lang dune 3.13)
+  > (package
+  >  (name invalid)
+  >  (allow_empty)
+  >  (depends f{oo."1.2.3"))
+  > (generate_opam_files true)
+  > EOF
+
+  $ dune build invalid.opam
+  File "dune-project", line 5, characters 10-15:
+  5 |  (depends f{oo."1.2.3"))
+                ^^^^^
+  Error: "f{oo." is an invalid package dependency.
+  Package names can contain letters, numbers, '-', '_' and '+', and need to
+  contain at least a letter.
+  Hint: f_oo_ would be a correct package dependency
+  [1]