unikernel/duniverse/dune_/test/blackbox-tests/test-cases/watching/direct-promotion.t

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+Demonstrate running "dune promote" concurrently with a passive rpc server
+
+  $ . ./helpers.sh
+
+  $ echo '(lang dune 3.20)' > dune-project
+  $ echo "  $ echo hello" > my_test.t
+
+  $ start_dune
+
+The test expectedly fails (see errors at the end of this file)
+  $ build "(alias my_test)"
+  Failure
+
+Promotion happens on the running RPC server.
+  $ dune promote
+  Success
+
+  $ build "(alias my_test)"
+  Success
+
+  $ stop_dune
+  File "my_test.t", line 1, characters 0-0:
+  Error: Files _build/default/my_test.t and _build/default/my_test.t.corrected
+  differ.
+  Had 1 error, waiting for filesystem changes...
+  Promoting _build/default/my_test.t.corrected to my_test.t.
+  Success, waiting for filesystem changes...