Add continuous test for ruby 2.3, 2.4 and 2.5 (#4829)

* Add continuous test for ruby 2.3, 2.4 and 2.5

* Change ruby 2.5 to 2.5.0

* No need to provide argument to rb_funcall when argc is 0

* Fix tests for ruby 2.5

* Use rescue instead of assert_raise to accept subclass of error

1 files changed, 15 insertions, 0 deletions

diff --git a/tests.sh b/tests.sh
index da607281..12a3cf30 100755
--- a/tests.sh
+++ b/tests.sh
@@ -325,6 +325,18 @@ build_ruby22() {
   internal_build_cpp  # For conformance tests.
   cd ruby && bash travis-test.sh ruby-2.2 && cd ..
 }
+build_ruby23() {
+  internal_build_cpp  # For conformance tests.
+  cd ruby && bash travis-test.sh ruby-2.3 && cd ..
+}
+build_ruby24() {
+  internal_build_cpp  # For conformance tests.
+  cd ruby && bash travis-test.sh ruby-2.4 && cd ..
+}
+build_ruby25() {
+  internal_build_cpp  # For conformance tests.
+  cd ruby && bash travis-test.sh ruby-2.5.0 && cd ..
+}
 build_jruby() {
   internal_build_cpp  # For conformance tests.
   # TODO(xiaofeng): Upgrade to jruby-9.x. There are some broken jests to be
@@ -334,6 +346,9 @@ build_jruby() {
 build_ruby_all() {
   build_ruby21
   build_ruby22
+  build_ruby23
+  build_ruby24
+  build_ruby25
   # TODO(teboring): Disable jruby test temperarily for it randomly fails.
   # https://grpc-testing.appspot.com/job/protobuf_pull_request/735/consoleFull.
   # build_jruby