Enable frozen_string_literal in all files in arel

58 files changed, 58 insertions, 0 deletions

diff --git a/test/attributes/test_attribute.rb b/test/attributes/test_attribute.rb
index 928b23ed7b..2b971ce54a 100644
--- a/test/attributes/test_attribute.rb
+++ b/test/attributes/test_attribute.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'ostruct'
 
diff --git a/test/collectors/test_bind_collector.rb b/test/collectors/test_bind_collector.rb
index fc7df2fc45..877aa20043 100644
--- a/test/collectors/test_bind_collector.rb
+++ b/test/collectors/test_bind_collector.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'arel/collectors/bind'
 
diff --git a/test/collectors/test_sql_string.rb b/test/collectors/test_sql_string.rb
index 37a9e41f71..92f1bf0fba 100644
--- a/test/collectors/test_sql_string.rb
+++ b/test/collectors/test_sql_string.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'arel/collectors/bind'
 
diff --git a/test/helper.rb b/test/helper.rb
index 6e8ac836fc..022ba1dae6 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'rubygems'
 require 'minitest/autorun'
 require 'fileutils'
diff --git a/test/nodes/test_and.rb b/test/nodes/test_and.rb
index 88d6d61531..8d1980269c 100644
--- a/test/nodes/test_and.rb
+++ b/test/nodes/test_and.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_as.rb b/test/nodes/test_as.rb
index b1dcccf7c7..1240d2333f 100644
--- a/test/nodes/test_as.rb
+++ b/test/nodes/test_as.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_ascending.rb b/test/nodes/test_ascending.rb
index 2991d46583..9b0e5f0c18 100644
--- a/test/nodes/test_ascending.rb
+++ b/test/nodes/test_ascending.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_bin.rb b/test/nodes/test_bin.rb
index 0dcc5f7bb8..af27d827fd 100644
--- a/test/nodes/test_bin.rb
+++ b/test/nodes/test_bin.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_binary.rb b/test/nodes/test_binary.rb
index 7e25a21151..8e3025a440 100644
--- a/test/nodes/test_binary.rb
+++ b/test/nodes/test_binary.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'set'
 
diff --git a/test/nodes/test_bind_param.rb b/test/nodes/test_bind_param.rb
index ea008f4c99..011de6410c 100644
--- a/test/nodes/test_bind_param.rb
+++ b/test/nodes/test_bind_param.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_case.rb b/test/nodes/test_case.rb
index a813ec7e69..21ff670e05 100644
--- a/test/nodes/test_case.rb
+++ b/test/nodes/test_case.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_casted.rb b/test/nodes/test_casted.rb
index 6d775e17ec..748879a538 100644
--- a/test/nodes/test_casted.rb
+++ b/test/nodes/test_casted.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_count.rb b/test/nodes/test_count.rb
index a9a329420e..85e93b1927 100644
--- a/test/nodes/test_count.rb
+++ b/test/nodes/test_count.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::Count do
diff --git a/test/nodes/test_delete_statement.rb b/test/nodes/test_delete_statement.rb
index 4bd5446ba2..5ce51a9ae8 100644
--- a/test/nodes/test_delete_statement.rb
+++ b/test/nodes/test_delete_statement.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::DeleteStatement do
diff --git a/test/nodes/test_descending.rb b/test/nodes/test_descending.rb
index fce71d69e9..98de94910f 100644
--- a/test/nodes/test_descending.rb
+++ b/test/nodes/test_descending.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_distinct.rb b/test/nodes/test_distinct.rb
index ffa8a68e6c..6c51b99946 100644
--- a/test/nodes/test_distinct.rb
+++ b/test/nodes/test_distinct.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_equality.rb b/test/nodes/test_equality.rb
index 42a156b051..83f73f1789 100644
--- a/test/nodes/test_equality.rb
+++ b/test/nodes/test_equality.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_extract.rb b/test/nodes/test_extract.rb
index eb98553268..307ef2572c 100644
--- a/test/nodes/test_extract.rb
+++ b/test/nodes/test_extract.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::Extract do
diff --git a/test/nodes/test_false.rb b/test/nodes/test_false.rb
index a2a8866680..da65e71547 100644
--- a/test/nodes/test_false.rb
+++ b/test/nodes/test_false.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_grouping.rb b/test/nodes/test_grouping.rb
index febf0bee40..8379336109 100644
--- a/test/nodes/test_grouping.rb
+++ b/test/nodes/test_grouping.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_infix_operation.rb b/test/nodes/test_infix_operation.rb
index 40616024e5..b6c891a5c0 100644
--- a/test/nodes/test_infix_operation.rb
+++ b/test/nodes/test_infix_operation.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_insert_statement.rb b/test/nodes/test_insert_statement.rb
index e0a5696ea4..af2c9541cb 100644
--- a/test/nodes/test_insert_statement.rb
+++ b/test/nodes/test_insert_statement.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::InsertStatement do
diff --git a/test/nodes/test_named_function.rb b/test/nodes/test_named_function.rb
index 33830d9d43..1f765e822d 100644
--- a/test/nodes/test_named_function.rb
+++ b/test/nodes/test_named_function.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_node.rb b/test/nodes/test_node.rb
index 056df7a584..2fd27600be 100644
--- a/test/nodes/test_node.rb
+++ b/test/nodes/test_node.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_not.rb b/test/nodes/test_not.rb
index a08d037445..cd027cec16 100644
--- a/test/nodes/test_not.rb
+++ b/test/nodes/test_not.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_or.rb b/test/nodes/test_or.rb
index 3e7bcc9379..6bc02c0ad3 100644
--- a/test/nodes/test_or.rb
+++ b/test/nodes/test_or.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_over.rb b/test/nodes/test_over.rb
index 0aac00b230..183c02fad3 100644
--- a/test/nodes/test_over.rb
+++ b/test/nodes/test_over.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::Over do
diff --git a/test/nodes/test_select_core.rb b/test/nodes/test_select_core.rb
index 4114bcf4ff..f868a2f940 100644
--- a/test/nodes/test_select_core.rb
+++ b/test/nodes/test_select_core.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_select_statement.rb b/test/nodes/test_select_statement.rb
index 3e4fcc0c07..ae209b86fd 100644
--- a/test/nodes/test_select_statement.rb
+++ b/test/nodes/test_select_statement.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::SelectStatement do
diff --git a/test/nodes/test_sql_literal.rb b/test/nodes/test_sql_literal.rb
index c09e5882d5..74e4f2cc90 100644
--- a/test/nodes/test_sql_literal.rb
+++ b/test/nodes/test_sql_literal.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'yaml'
 
diff --git a/test/nodes/test_sum.rb b/test/nodes/test_sum.rb
index d387e7f9ef..e1b65abbef 100644
--- a/test/nodes/test_sum.rb
+++ b/test/nodes/test_sum.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::Sum do
diff --git a/test/nodes/test_table_alias.rb b/test/nodes/test_table_alias.rb
index 57c9a42fc6..39040e6352 100644
--- a/test/nodes/test_table_alias.rb
+++ b/test/nodes/test_table_alias.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'ostruct'
 
diff --git a/test/nodes/test_true.rb b/test/nodes/test_true.rb
index ed4743a63b..35b4d0a14d 100644
--- a/test/nodes/test_true.rb
+++ b/test/nodes/test_true.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_unary_operation.rb b/test/nodes/test_unary_operation.rb
index d89c10b431..bde9594a2c 100644
--- a/test/nodes/test_unary_operation.rb
+++ b/test/nodes/test_unary_operation.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/nodes/test_update_statement.rb b/test/nodes/test_update_statement.rb
index 920dc6e3ef..09a4a09074 100644
--- a/test/nodes/test_update_statement.rb
+++ b/test/nodes/test_update_statement.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 describe Arel::Nodes::UpdateStatement do
diff --git a/test/nodes/test_window.rb b/test/nodes/test_window.rb
index 9ec42be59f..b4ad22edb5 100644
--- a/test/nodes/test_window.rb
+++ b/test/nodes/test_window.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/support/fake_record.rb b/test/support/fake_record.rb
index 4867dad5dc..03116ff2ee 100644
--- a/test/support/fake_record.rb
+++ b/test/support/fake_record.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module FakeRecord
   class Column < Struct.new(:name, :type)
   end
diff --git a/test/test_attributes.rb b/test/test_attributes.rb
index d0b00d4333..754fc0c134 100644
--- a/test/test_attributes.rb
+++ b/test/test_attributes.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_crud.rb b/test/test_crud.rb
index 5c470155ac..0832f82aee 100644
--- a/test/test_crud.rb
+++ b/test/test_crud.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_delete_manager.rb b/test/test_delete_manager.rb
index ece2389d88..2d068d3b8b 100644
--- a/test/test_delete_manager.rb
+++ b/test/test_delete_manager.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_factory_methods.rb b/test/test_factory_methods.rb
index 3e23b090b4..3dbe2d615d 100644
--- a/test/test_factory_methods.rb
+++ b/test/test_factory_methods.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_insert_manager.rb b/test/test_insert_manager.rb
index 4289b0fa8c..f6a76fc20f 100644
--- a/test/test_insert_manager.rb
+++ b/test/test_insert_manager.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_select_manager.rb b/test/test_select_manager.rb
index e88f0e8e11..076b732984 100644
--- a/test/test_select_manager.rb
+++ b/test/test_select_manager.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_table.rb b/test/test_table.rb
index e36a6e3a41..9877d24541 100644
--- a/test/test_table.rb
+++ b/test/test_table.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/test_update_manager.rb b/test/test_update_manager.rb
index f41dc46e7d..85abbf3875 100644
--- a/test/test_update_manager.rb
+++ b/test/test_update_manager.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_bind_visitor.rb b/test/visitors/test_bind_visitor.rb
index f0007cabbf..3e0578a6a1 100644
--- a/test/visitors/test_bind_visitor.rb
+++ b/test/visitors/test_bind_visitor.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'arel/visitors/bind_visitor'
 require 'support/fake_record'
diff --git a/test/visitors/test_depth_first.rb b/test/visitors/test_depth_first.rb
index 81220b63a4..0c7f7ccd34 100644
--- a/test/visitors/test_depth_first.rb
+++ b/test/visitors/test_depth_first.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'set'
 
diff --git a/test/visitors/test_dispatch_contamination.rb b/test/visitors/test_dispatch_contamination.rb
index d3c9e8af2e..6422a6dff3 100644
--- a/test/visitors/test_dispatch_contamination.rb
+++ b/test/visitors/test_dispatch_contamination.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_dot.rb b/test/visitors/test_dot.rb
index 179a2c297c..1d27d1a5cb 100644
--- a/test/visitors/test_dot.rb
+++ b/test/visitors/test_dot.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_ibm_db.rb b/test/visitors/test_ibm_db.rb
index f1aa7612be..81a5713183 100644
--- a/test/visitors/test_ibm_db.rb
+++ b/test/visitors/test_ibm_db.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_informix.rb b/test/visitors/test_informix.rb
index 04c42f8f60..9d15979219 100644
--- a/test/visitors/test_informix.rb
+++ b/test/visitors/test_informix.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_mssql.rb b/test/visitors/test_mssql.rb
index fe228bce4b..0d0753b14b 100644
--- a/test/visitors/test_mssql.rb
+++ b/test/visitors/test_mssql.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_mysql.rb b/test/visitors/test_mysql.rb
index 30dcea3d36..9a205311d4 100644
--- a/test/visitors/test_mysql.rb
+++ b/test/visitors/test_mysql.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_oracle.rb b/test/visitors/test_oracle.rb
index 4c22be5cbb..b1921f0cbc 100644
--- a/test/visitors/test_oracle.rb
+++ b/test/visitors/test_oracle.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_oracle12.rb b/test/visitors/test_oracle12.rb
index 43235fd72c..c908a51d4f 100644
--- a/test/visitors/test_oracle12.rb
+++ b/test/visitors/test_oracle12.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_postgres.rb b/test/visitors/test_postgres.rb
index f97b734b7d..26cc721871 100644
--- a/test/visitors/test_postgres.rb
+++ b/test/visitors/test_postgres.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_sqlite.rb b/test/visitors/test_sqlite.rb
index a9f3501f20..2e145b3faa 100644
--- a/test/visitors/test_sqlite.rb
+++ b/test/visitors/test_sqlite.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 
 module Arel
diff --git a/test/visitors/test_to_sql.rb b/test/visitors/test_to_sql.rb
index e31d60366b..07458c1dc5 100644
--- a/test/visitors/test_to_sql.rb
+++ b/test/visitors/test_to_sql.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'helper'
 require 'set'