Merge pull request #150 from rspec/disable_rubygems

Only enable rubygems for bundle install

Author: myronmarston

travis/script/functions.sh

@@ -8,6 +8,12 @@ export JRUBY_OPTS=${JRUBY_OPTS:-"--server -Xcompile.invokedynamic=false"}
 SPECS_HAVE_RUN_FILE=specs.out
 MAINTENANCE_BRANCH=`cat maintenance-branch`
 
+# Don't allow rubygems to pollute what's loaded. Also, things boot faster
+# without the extra load time of rubygems. Only works on MRI Ruby 1.9+
+if is_mri_192_plus; then
+  export RUBYOPT="--disable=gem"
+fi
+
 function clone_repo {
   if [ ! -d $1 ]; then # don't clone if the dir is already there
     travis_retry eval "git clone git://github.com/rspec/$1 --depth 1 --branch $MAINTENANCE_BRANCH"
@@ -74,7 +80,11 @@ function run_spec_suite_for {
       pushd ../$1
       unset BUNDLE_GEMFILE
       bundle_install_flags=`cat .travis.yml | grep bundler_args | tr -d '"' | grep -o " .*"`
-      travis_retry eval "bundle install $bundle_install_flags"
+      if is_mri_192_plus; then
+        travis_retry eval "RUBYOPT=$RUBYOPT:'--enable rubygems' bundle install $bundle_install_flags"
+      else
+        travis_retry eval "bundle install $bundle_install_flags"
+      fi
       run_specs_and_record_done
       popd
     else

travis/script/predicate_functions.sh

@@ -30,6 +30,18 @@ function is_mri_192 {
   fi
 }
 
+function is_mri_192_plus {
+  if is_mri; then
+    if ruby -e "exit(RUBY_VERSION.to_f > 1.8)"; then
+      return 0
+    else
+      return 1
+    fi
+  else
+    return 1
+  fi
+}
+
 function is_mri_2plus {
   if is_mri; then
     if ruby -e "exit(RUBY_VERSION.to_f > 2.0)"; then