Integrate intellij scala aspect integration testing into rules_scala by manually cloning intellij. This is opposed to using a submodule.

intellij_integration_via_manual_clone.diff

diff --git a/.travis.yml b/.travis.yml
index e4cf4ff..46f5bdc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,6 +38,7 @@ before_install:
     ./install.sh --user
     rm -f install.sh
   - cat .bazelrc.travis >> .bazelrc
+  - git clone git@github.com:bazelbuild/intellij.git
 
 script:
   - bash test_run.sh ci
diff --git a/test_run.sh b/test_run.sh
index e5bc24f..9b54489 100755
--- a/test_run.sh
+++ b/test_run.sh
@@ -525,6 +525,23 @@ revert_change() {
   mv $1/$2.bak $1/$2
 }
 
+test_intellij_aspect() {
+  intellij_git_tag=$1
+  rules_scala_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+
+  if [[ "$runner" == "run_test_ci" ]]; then
+    # ci: intellij is checked out with full git history in `.travis.yaml`
+    cd intellij
+  else
+    # local: update or checkout a sibling dir.
+    cd "${rules_scala_dir}/../"
+    test -d "intellij/.git" || git clone git@github.com:bazelbuild/intellij.git
+    cd intellij && git fetch && git pull
+  fi
+  git checkout "${intellij_git_tag}"
+  bazel test --test_output=errors --incompatible_disallow_set_constructor=false --override_repository io_bazel_rules_scala=${rules_scala_dir} //aspect/testing/tests/src/com/google/idea/blaze/aspect/scala/...
+}
+
 if [ "$1" != "ci" ]; then
   runner="run_test_local"
 else
@@ -583,3 +600,5 @@ $runner test_scala_library_expect_no_recompilation_on_internal_change_of_java_de
 $runner test_scala_library_expect_no_java_recompilation_on_internal_change_of_scala_sibling
 $runner test_scala_library_expect_failure_on_missing_direct_java
 $runner bazel run test:test_scala_proto_server
+$runner test_intellij_aspect ac2bb7 #TODO(https://github.com/bazelbuild/intellij/issues/146): replace with release tag when fixed.
+$runner test_intellij_aspect master