unikernel/duniverse/dune_/test/blackbox-tests/test-cases/coq/failed-config.t/dune-project

@@ -0,0 +1,3 @@
+(lang dune 3.11)
+
+(using coq 0.8)

unikernel/duniverse/dune_/test/blackbox-tests/test-cases/coq/failed-config.t/run.t

@@ -0,0 +1,145 @@
+Here we test what happens when coq --config or --print-version fails in an unexpected way
+and how dune reacts to this failure.
+
+First we create a wrapper around coqc so we can make it fail. It should only fail on
+--config and --print-version.
+  $ mkdir bin
+  $ cat > bin/coqc <<'EOF'
+  > #!/bin/sh
+  > if    [ $1 = --config ]        && [ -n "$FAIL_CONFIG" ]; then
+  >   echo "coqc --config has failed for some reason" >&2
+  >   exit 1
+  > elif  [ $1 = --print-version ] && [ -n "$FAIL_VERSION" ]; then
+  >   echo "coqc --print-version has failed for some reason" >&2
+  >   exit 1
+  > fi
+  > EOF
+  > echo "$(which coqc) \$@" >> bin/coqc
+  > chmod +x bin/coqc
+
+  $ export PATH=$PWD/bin:$PATH
+
+To make sure these are working correctly we test them.
+
+These should succeed.
+  $ coqc --print-version > /dev/null
+  $ coqc --config > /dev/null
+These should fail.
+  $ FAIL_VERSION=1 \
+  > coqc --print-version 2> /dev/null
+  [1]
+  $ FAIL_CONFIG=1 \
+  > coqc --config 2> /dev/null
+  [1]
+
+Now we create a simple project that uses this coqc wrapper, should
+fail when the stdlib cannot be determined
+
+  $ cat > dune <<EOF
+  > (coq.theory
+  >  (flags -noinit)
+  >  (name foo))
+  > 
+  > (rule
+  >  (deps
+  >   (env_var FAIL_VERSION)
+  >   (env_var FAIL_CONFIG))
+  >  (action
+  >   (write-file a.v "")))
+  > EOF
+
+Should fail: first warning that installed theories are being skipped due to the
+failure, then, as the library requires the stdlib, it fails:
+  $ FAIL_CONFIG=1 \
+  > dune build
+  Warning: Skipping installed theories due to 'coqc --config' failure:
+  - $TESTCASE_ROOT/bin/coqc --config failed with exit code 1.
+  Hint: Try running 'coqc --config' manually to see the error.
+  Couldn't find Coq standard library, and theory is not using (stdlib no)
+  -> required by _build/default/.foo.theory.d
+  -> required by alias all
+  -> required by alias default
+  [1]
+
+Here we build a simple Coq project. Neither a failing --config or --print-version should
+block this as it doesn't depend on the stdlib.
+
+  $ cat > dune <<EOF
+  > (coq.theory
+  >  (flags -noinit)
+  >  (name foo)
+  >  (stdlib no))
+  > 
+  > (rule
+  >  (deps
+  >   (env_var FAIL_VERSION)
+  >   (env_var FAIL_CONFIG))
+  >  (action
+  >   (write-file a.v "")))
+  > EOF
+
+Should succeed, warning that installed theories are being skipped due to the
+failure (c.f. #8958):
+  $ FAIL_CONFIG=1 \
+  > dune build
+  Warning: Skipping installed theories due to 'coqc --config' failure:
+  - $TESTCASE_ROOT/bin/coqc --config failed with exit code 1.
+  Hint: Try running 'coqc --config' manually to see the error.
+
+  $ FAIL_VERSION=1 \
+  > dune build
+
+  $ dune build
+
+Here we query the version of Coq. Due to the expansion of %{coq:_} macros we need coq
+--config. A failing --print-version or --config will block this value from being realised.
+
+  $ cat > dune <<EOF
+  > (rule
+  >  (alias version)
+  >  (action
+  >   (echo %{coq:version})))
+  > EOF
+
+Succeeds after PR #10631
+  $ FAIL_CONFIG=1 \
+  > dune build @version
+  8.16.1
+
+Should fail.
+  $ FAIL_VERSION=1 \
+  > dune build @version
+  File "dune", line 4, characters 8-22:
+  4 |   (echo %{coq:version})))
+              ^^^^^^^^^^^^^^
+  Error: Could not expand %{coq:version} as running coqc failed.
+  $TESTCASE_ROOT/bin/coqc --print-version failed with exit code 1.
+  [1]
+
+Here we query the config. A failing --config will block this value from being realised
+however a failing --print-version will not.
+
+  $ cat > dune <<EOF
+  > (rule
+  >  (alias config)
+  >  (action
+  >   (echo %{coq:coqlib})))
+  > EOF
+
+Should fail.
+  $ export coqlib="$(coqc -config | grep COQLIB | sed 's/COQLIB=//')"
+  $ FAIL_CONFIG=1 \
+  > dune build @config 
+  File "dune", line 4, characters 8-21:
+  4 |   (echo %{coq:coqlib})))
+              ^^^^^^^^^^^^^
+  Error: Could not expand %{coq:coqlib} as running coqc failed.
+  $TESTCASE_ROOT/bin/coqc --config failed with exit code 1.
+  [1]
+
+Should succeed.
+  $ FAIL_VERSION=1 \
+  > dune build @config | sed "s,$coqlib,COQLIB," > /dev/null
+
+Should succeed.
+  $ dune build @config | sed "s,$coqlib,COQLIB," > /dev/null