Suppress expected exceptions by `report_on_exception` = `false` in Ruby 2.5

* Ruby 2.4 introduces `report_on_exception` to control if it reports exceptions in thread,
this default value has been `false` in Ruby 2.4.

Refer https://www.ruby-lang.org/en/news/2016/11/09/ruby-2-4-0-preview3-released/

* Ruby 2.5 changes `report_on_exception` default value to `true`
since this commit https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?revision=61183&view=revision

This pull request suppresses expected exceptions by setting `report_on_exception` = `false`
it also supports Ruby 2.3 which does not have`report_on_exception`.

2 files changed, 5 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapters/postgresql/transaction_test.rb b/activerecord/test/cases/adapters/postgresql/transaction_test.rb
index c24dfeb345..9821b103df 100644
--- a/activerecord/test/cases/adapters/postgresql/transaction_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/transaction_test.rb
@@ -14,6 +14,7 @@ module ActiveRecord
 
     setup do
       @abort, Thread.abort_on_exception = Thread.abort_on_exception, false
+      Thread.report_on_exception, @original_report_on_exception = false, Thread.report_on_exception if Thread.respond_to?(:report_on_exception)
 
       @connection = ActiveRecord::Base.connection
 
@@ -31,6 +32,7 @@ module ActiveRecord
       @connection.drop_table "samples", if_exists: true
 
       Thread.abort_on_exception = @abort
+      Thread.report_on_exception = @original_report_on_exception if Thread.respond_to?(:report_on_exception)
     end
 
     test "raises SerializationFailure when a serialization failure occurs" do
diff --git a/activerecord/test/cases/connection_pool_test.rb b/activerecord/test/cases/connection_pool_test.rb
index 1e08cc74dc..70c0ffb3bf 100644
--- a/activerecord/test/cases/connection_pool_test.rb
+++ b/activerecord/test/cases/connection_pool_test.rb
@@ -469,6 +469,7 @@ module ActiveRecord
       end
 
       def test_non_bang_disconnect_and_clear_reloadable_connections_throw_exception_if_threads_dont_return_their_conns
+        Thread.report_on_exception, original_report_on_exception = false, Thread.report_on_exception if Thread.respond_to?(:report_on_exception)
         @pool.checkout_timeout = 0.001 # no need to delay test suite by waiting the whole full default timeout
         [:disconnect, :clear_reloadable_connections].each do |group_action_method|
           @pool.with_connection do |connection|
@@ -477,6 +478,8 @@ module ActiveRecord
             end
           end
         end
+      ensure
+        Thread.report_on_exception = original_report_on_exception if Thread.respond_to?(:report_on_exception)
       end
 
       def test_disconnect_and_clear_reloadable_connections_attempt_to_wait_for_threads_to_return_their_conns