make sure we invoke the compile rake task where necessary

related to commit 609cdde

build_all

@@ -9,7 +9,7 @@ mkdir -p gems
 
 # MRI et al (standard gem)
 bundle exec rake clean
-bundle exec rake test
+bundle exec rake compile test
 bundle exec rake gem
 cp -v pkg/nokogiri*.gem gems
 

concourse/tasks/gem-test/gem-install-and-test.sh

@@ -14,6 +14,6 @@ popd
 pushd nokogiri
 
   bundle install
-  rake test
+  rake test # we're testing the installed gem, so we don't compile or use bundler
 
 popd

concourse/tasks/rake-test/run.ps1

@@ -6,6 +6,6 @@ push-location nokogiri
 
     system-cmd "gem install bundler"
     system-cmd "bundle install"
-    system-cmd "bundle exec rake test"
+    system-cmd "bundle exec rake compile test"
 
 pop-location

concourse/tasks/rake-test/run.sh

@@ -52,7 +52,7 @@ function rbx-engine {
 
 pushd nokogiri
 
-  RAKE_TASK="test"
+  test_task="test"
 
   if rbx-engine ; then
     ensure-apt-update
@@ -72,7 +72,7 @@ pushd nokogiri
   fi
 
   if [[ ${TEST_WITH_VALGRIND:-} != "" ]] ; then
-    RAKE_TASK="test:valgrind" # override
+    test_task="test:valgrind" # override
     export TESTOPTS="-v" # see more verbose output to help narrow down warnings
 
     # always use the CI suppressions if they exist
@@ -82,6 +82,6 @@ pushd nokogiri
     fi
   fi
 
-  bundle exec rake ${RAKE_TASK}
+  bundle exec rake compile ${test_task}
 
 popd