Reset ActiveRecord::SchemaDumper.ignore_tables value after changed in tests

activerecord/test/cases/schema_dumper_test.rb

@@ -2,6 +2,7 @@
 require 'support/schema_dumping_helper'
 
 class SchemaDumperTest < ActiveRecord::TestCase
+  include SchemaDumpingHelper
   self.use_transactional_fixtures = false
 
   setup do
@@ -10,9 +11,11 @@ class SchemaDumperTest < ActiveRecord::TestCase
 
   def standard_dump
     @stream = StringIO.new
-    ActiveRecord::SchemaDumper.ignore_tables = []
+    old_ignore_tables, ActiveRecord::SchemaDumper.ignore_tables = ActiveRecord::SchemaDumper.ignore_tables, []
     ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, @stream)
     @stream.string
+  ensure
+    ActiveRecord::SchemaDumper.ignore_tables = old_ignore_tables
   end
 
   def test_dump_schema_information_outputs_lexically_ordered_versions
@@ -90,20 +93,12 @@ def test_no_dump_errors
   end
 
   def test_schema_dump_includes_not_null_columns
-    stream = StringIO.new
-
-    ActiveRecord::SchemaDumper.ignore_tables = [/^[^r]/]
-    ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
-    output = stream.string
+    output = dump_all_table_schema([/^[^r]/])
     assert_match %r{null: false}, output
   end
 
   def test_schema_dump_includes_limit_constraint_for_integer_columns
-    stream = StringIO.new
-
-    ActiveRecord::SchemaDumper.ignore_tables = [/^(?!integer_limits)/]
-    ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
-    output = stream.string
+    output = dump_all_table_schema([/^(?!integer_limits)/])
 
     if current_adapter?(:PostgreSQLAdapter)
       assert_match %r{c_int_1.*limit: 2}, output
@@ -150,22 +145,14 @@ def test_schema_dump_includes_limit_constraint_for_integer_columns
   end
 
   def test_schema_dump_with_string_ignored_table
-    stream = StringIO.new
-
-    ActiveRecord::SchemaDumper.ignore_tables = ['accounts']
-    ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
-    output = stream.string
+    output = dump_all_table_schema(['accounts'])
     assert_no_match %r{create_table "accounts"}, output
     assert_match %r{create_table "authors"}, output
     assert_no_match %r{create_table "schema_migrations"}, output
   end
 
   def test_schema_dump_with_regexp_ignored_table
-    stream = StringIO.new
-
-    ActiveRecord::SchemaDumper.ignore_tables = [/^account/]
-    ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
-    output = stream.string
+    output = dump_all_table_schema([/^account/])
     assert_no_match %r{create_table "accounts"}, output
     assert_match %r{create_table "authors"}, output
     assert_no_match %r{create_table "schema_migrations"}, output
@@ -173,10 +160,12 @@ def test_schema_dump_with_regexp_ignored_table
 
   def test_schema_dump_illegal_ignored_table_value
     stream = StringIO.new
-    ActiveRecord::SchemaDumper.ignore_tables = [5]
+    old_ignore_tables, ActiveRecord::SchemaDumper.ignore_tables = ActiveRecord::SchemaDumper.ignore_tables, [5]
     assert_raise(StandardError) do
       ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
     end
+  ensure
+    ActiveRecord::SchemaDumper.ignore_tables = old_ignore_tables
   end
 
   def test_schema_dumps_index_columns_in_right_order
@@ -245,10 +234,7 @@ def test_schema_dumps_index_type
   end
 
   def test_schema_dump_includes_decimal_options
-    stream = StringIO.new
-    ActiveRecord::SchemaDumper.ignore_tables = [/^[^n]/]
-    ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
-    output = stream.string
+    output = dump_all_table_schema([/^[^n]/])
     assert_match %r{precision: 3,[[:space:]]+scale: 2,[[:space:]]+default: 2.78}, output
   end
 

activerecord/test/support/schema_dumping_helper.rb

@@ -8,4 +8,13 @@ def dump_table_schema(table, connection = ActiveRecord::Base.connection)
   ensure
     ActiveRecord::SchemaDumper.ignore_tables = old_ignore_tables
   end
+
+  def dump_all_table_schema(ignore_tables)
+    old_ignore_tables, ActiveRecord::SchemaDumper.ignore_tables = ActiveRecord::SchemaDumper.ignore_tables, ignore_tables
+    stream = StringIO.new
+    ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, stream)
+    stream.string
+  ensure
+    ActiveRecord::SchemaDumper.ignore_tables = old_ignore_tables
+  end
 end