unikernel/duniverse/dune_/test/blackbox-tests/test-cases/pkg/conflicts.t

@@ -0,0 +1,127 @@
+The solver should repsect the (conflicts) field of the (package) stanza.
+
+  $ . ./helpers.sh
+  $ mkrepo
+  $ mkpkg foo 0.0.1
+  $ mkpkg bar << EOF
+  > depends: [ "foo" ]
+  > EOF
+
+The solver should say no solution rather than just ignoring the conflict.
+
+  $ solve_project << EOF
+  > (lang dune 3.11)
+  > (package
+  >  (name x)
+  >  (allow_empty)
+  >  (conflicts foo)
+  >  (depends bar))
+  > EOF
+  Error: Unable to solve dependencies for the following lock directories:
+  Lock directory dune.lock:
+  Couldn't solve the package dependency formula.
+  Selected candidates: bar.0.0.1 x.dev
+  - foo -> (problem)
+      No usable implementations:
+        foo.0.0.1: Package does not satisfy constraints of local package x
+  [1]
+
+There could be more than one conflict and they can have version constraints:
+
+  $ mkpkg foo2 0.0.1
+  $ mkpkg bar2 << EOF
+  > depends: [ "foo2" ]
+  > EOF
+
+  $ solve_project << EOF
+  > (lang dune 3.11)
+  > (generate_opam_files true)
+  > (package
+  >  (name x)
+  >  (allow_empty)
+  >  (conflicts (foo (< 0.2)) (foo2 (< 0.2)))
+  >  (depends bar bar2))
+  > EOF
+  Error: Unable to solve dependencies for the following lock directories:
+  Lock directory dune.lock:
+  Couldn't solve the package dependency formula.
+  Selected candidates: bar.0.0.1 bar2.0.0.1 x.dev
+  - foo -> (problem)
+      No usable implementations:
+        foo.0.0.1: Package does not satisfy constraints of local package x
+  - foo2 -> (problem)
+      No usable implementations:
+        foo2.0.0.1: Package does not satisfy constraints of local package x
+  [1]
+
+When conflicts are obtained from an opam file instead of a dune-project,
+the behaviour should be the same:
+
+  $ dune build x.opam
+  $ sed -n '/conflicts/,/]/p' x.opam
+  conflicts: [
+    "foo" {< "0.2"}
+    "foo2" {< "0.2"}
+  ]
+
+Even though the conflicts are listed by opam without a `|` to indicate a
+disjunction, either package is problematic:
+
+  $ mkpkg dune 3.11
+  $ echo '(lang dune 3.11)' | solve_project 2>&1 | sed -E 's/3.[0-9]+/3.XX/'
+  Error: Unable to solve dependencies for the following lock directories:
+  Lock directory dune.lock:
+  Couldn't solve the package dependency formula.
+  Selected candidates: bar.0.0.1 bar2.0.0.1 x.dev
+  - dune -> dune.3.XX
+      User requested = 3.XX
+  - foo -> (problem)
+      No usable implementations:
+        foo.0.0.1: Package does not satisfy constraints of local package x
+  - foo2 -> (problem)
+      No usable implementations:
+        foo2.0.0.1: Package does not satisfy constraints of local package x
+
+Adding a new version of `foo` only resolves one conflict:
+
+  $ mkpkg foo 0.2
+  $ echo '(lang dune 3.11)' | solve_project 2>&1 | sed -E 's/3.[0-9]+/3.XX/'
+  Error: Unable to solve dependencies for the following lock directories:
+  Lock directory dune.lock:
+  Couldn't solve the package dependency formula.
+  Selected candidates: bar.0.0.1 bar2.0.0.1 foo.0.2 x.dev
+  - dune -> dune.3.XX
+      User requested = 3.XX
+  - foo2 -> (problem)
+      No usable implementations:
+        foo2.0.0.1: Package does not satisfy constraints of local package x
+
+Addition of `foo2` to solve the last remaining conflict:
+
+  $ mkpkg foo2 0.2
+  $ solve_project <<EOF
+  > (lang dune 3.11)
+  > EOF
+  Solution for dune.lock:
+  - bar.0.0.1
+  - bar2.0.0.1
+  - foo.0.2
+  - foo2.0.2
+
+Same but checking that the latest versions of `foo` and `foo2` are not selected
+due to the version constraints conflicts:
+
+  $ solve_project << EOF
+  > (lang dune 3.11)
+  > (generate_opam_files true)
+  > (package
+  >  (name x)
+  >  (allow_empty)
+  >  (conflicts (foo (>= 0.2)) (foo2 (>= 0.2)))
+  >  (depends bar bar2))
+  > EOF
+  Solution for dune.lock:
+  - bar.0.0.1
+  - bar2.0.0.1
+  - foo.0.0.1
+  - foo2.0.0.1