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

@@ -0,0 +1,49 @@
+Tests verifying that the config file presents accurate error or warning
+messages when a stanza is used with a version of dune which does not support
+such a stanza.
+
+Create a config file to use in the following tests. We will initialize the 
+config with a version and a stanza incompatable with that version.
+
+  $ export DUNE_CACHE_ROOT=$PWD/dune-cache
+  $ touch dune-config
+  $ cat >dune-config <<EOF
+  > (lang dune 1.0)
+  > (cache enabled)
+  > EOF
+
+Attempt to initialize a new project while an invaild stanza due to versioning
+exists in the config.
+
+  $ dune init proj test --config-file=dune-config
+  File "$TESTCASE_ROOT/dune-config", line 2, characters 0-15:
+  2 | (cache enabled)
+      ^^^^^^^^^^^^^^^
+  Error: 'cache' is only available since version 2.0 of the dune language.
+  Please update your dune config file to have (lang dune 2.0).
+  [1]
+
+Update the dune configuration with a version that would support the 
+'(cache enabled)' stanza and attempt a successful project initialization.
+
+  $ cat >dune-config <<EOF
+  > (lang dune 2.0)
+  > (cache enabled)
+  > EOF
+
+  $ dune init proj test_vaild --config-file=dune-config
+  Entering directory 'test_vaild'
+  Success: initialized project component named test_vaild
+  Leaving directory 'test_vaild'
+
+Append an invaild stanza to the config file and attempt project initialzation.
+
+  $ echo "(cache-check-probability 0.5)" >> dune-config
+  $ dune init proj test --config-file=dune-config
+  File "$TESTCASE_ROOT/dune-config", line 3, characters 0-29:
+  3 | (cache-check-probability 0.5)
+      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  Error: 'cache-check-probability' is only available since version 2.7 of the
+  dune language. Please update your dune config file to have (lang dune 2.7).
+  [1]
+