Merge pull request #116 from rspec/disable-rubygems

Disable rubygems on travis.

Author: JonRowe

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 $MAINTENANCE_BRANCH"
@@ -43,10 +49,15 @@ function run_cukes {
       # the bin/cucumber approach below. That approach is faster
       # (as it avoids the bundler tax), so we use it on rubies where we can.
       bundle exec cucumber --strict
+    elif is_jruby; then
+      # For some reason JRuby doesn't like our improved bundler setup
+      RUBYOPT="-I${PWD}/../bundle -rbundler/setup" \
+         PATH="${PWD}/bin:$PATH" \
+         bin/cucumber --strict
     else
       # Prepare RUBYOPT for scenarios that are shelling out to ruby,
       # and PATH for those that are using `rspec` or `rake`.
-      RUBYOPT="-I${PWD}/../bundle -rbundler/setup" \
+      RUBYOPT="${RUBYOPT} -I${PWD}/../bundle -rbundler/setup" \
          PATH="${PWD}/bin:$PATH" \
          bin/cucumber --strict
     fi

travis/script/predicate_functions.sh

@@ -8,6 +8,16 @@ function is_mri {
   fi;
 }
 
+function is_jruby {
+  if ruby -e "exit(defined?(RUBY_PLATFORM) && RUBY_PLATFORM == 'java')"; then
+    # RUBY_ENGINE only returns 'ruby' on MRI.
+    # MRI 1.8.7 lacks the constant but all other rubies have it (including JRuby in 1.8 mode)
+    return 0
+  else
+    return 1
+  fi;
+}
+
 function is_mri_192 {
   if is_mri; then
     if ruby -e "exit(RUBY_VERSION == '1.9.2')"; then
@@ -20,6 +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