Merge branch 'isolating_tests'

Now we're almost ready to remove this: https://github.com/rails/rails/blob/5294ad8/activesupport/lib/active_support/test_case.rb#L29

actionpack/test/controller/integration_test.rb

@@ -751,13 +751,17 @@ def app
     assert_equal "http://bar.com/foo", foos_url
   end
 
-  test "test can override default url options" do
+  def test_can_override_default_url_options
+    original_host = default_url_options.dup
+
     default_url_options[:host] = "foobar.com"
     assert_equal "http://foobar.com/foo", foos_url
 
     get "/bar"
     assert_response :success
     assert_equal "http://foobar.com/foo", foos_url
+  ensure
+    ActionDispatch::Integration::Session.default_url_options = self.default_url_options = original_host
   end
 
   test "current request path parameters are recalled" do

actionpack/test/controller/localized_templates_test.rb

@@ -9,14 +9,20 @@ class LocalizedTemplatesTest < ActionController::TestCase
   tests LocalizedController
 
   def test_localized_template_is_used
+    old_locale = I18n.locale
     I18n.locale = :de
     get :hello_world
     assert_equal "Gutten Tag", @response.body
+  ensure
+    I18n.locale = old_locale
   end
 
   def test_default_locale_template_is_used_when_locale_is_missing
+    old_locale = I18n.locale
     I18n.locale = :dk
     get :hello_world
     assert_equal "Hello World", @response.body
+  ensure
+    I18n.locale = old_locale
   end
-end
\ No newline at end of file
+end

activerecord/lib/active_record/test_case.rb

@@ -60,16 +60,17 @@ def clear_log; self.log = []; self.log_all = []; end
 
     self.clear_log
 
-    self.ignored_sql = [/^PRAGMA (?!(table_info))/, /^SELECT currval/, /^SELECT CAST/, /^SELECT @@IDENTITY/, /^SELECT @@ROWCOUNT/, /^SAVEPOINT/, /^ROLLBACK TO SAVEPOINT/, /^RELEASE SAVEPOINT/, /^SHOW max_identifier_length/, /^BEGIN/, /^COMMIT/]
+    self.ignored_sql = [/^PRAGMA/, /^SELECT currval/, /^SELECT CAST/, /^SELECT @@IDENTITY/, /^SELECT @@ROWCOUNT/, /^SAVEPOINT/, /^ROLLBACK TO SAVEPOINT/, /^RELEASE SAVEPOINT/, /^SHOW max_identifier_length/, /^BEGIN/, /^COMMIT/]
 
     # FIXME: this needs to be refactored so specific database can add their own
     # ignored SQL, or better yet, use a different notification for the queries
     # instead examining the SQL content.
     oracle_ignored     = [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from all_triggers/im]
     mysql_ignored      = [/^SHOW TABLES/i, /^SHOW FULL FIELDS/]
-    postgresql_ignored = [/^\s*select\b.*\bfrom\b.*pg_namespace\b/im, /^\s*select\b.*\battname\b.*\bfrom\b.*\bpg_attribute\b/im]
+    postgresql_ignored = [/^\s*select\b.*\bfrom\b.*pg_namespace\b/im, /^\s*select\b.*\battname\b.*\bfrom\b.*\bpg_attribute\b/im, /^SHOW search_path/i]
+    sqlite3_ignored =    [/^\s*SELECT name\b.*\bFROM sqlite_master/im]
 
-    [oracle_ignored, mysql_ignored, postgresql_ignored].each do |db_ignored_sql|
+    [oracle_ignored, mysql_ignored, postgresql_ignored, sqlite3_ignored].each do |db_ignored_sql|
       ignored_sql.concat db_ignored_sql
     end
 

activerecord/test/cases/ar_schema_test.rb

@@ -12,6 +12,7 @@ def setup
 
     def teardown
       @connection.drop_table :fruits rescue nil
+      ActiveRecord::SchemaMigration.delete_all rescue nil
     end
 
     def test_schema_define

activerecord/test/cases/associations/nested_through_associations_test.rb

@@ -221,6 +221,9 @@ def test_has_many_through_has_many_with_has_and_belongs_to_many_source_reflectio
   end
 
   def test_has_many_through_has_many_with_has_and_belongs_to_many_source_reflection_preload_via_joins
+    # preload table schemas
+    Author.joins(:post_categories).first
+
     assert_includes_and_joins_equal(
       Author.where('categories.id' => categories(:cooking).id),
       [authors(:bob)], :post_categories
@@ -246,6 +249,9 @@ def test_has_many_through_has_and_belongs_to_many_with_has_many_source_reflectio
   end
 
   def test_has_many_through_has_and_belongs_to_many_with_has_many_source_reflection_preload_via_joins
+    # preload table schemas
+    Category.joins(:post_comments).first
+
     assert_includes_and_joins_equal(
       Category.where('comments.id' => comments(:more_greetings).id).order('categories.id'),
       [categories(:general), categories(:technology)], :post_comments
@@ -271,6 +277,9 @@ def test_has_many_through_has_many_with_has_many_through_habtm_source_reflection
   end
 
   def test_has_many_through_has_many_with_has_many_through_habtm_source_reflection_preload_via_joins
+    # preload table schemas
+    Author.joins(:category_post_comments).first
+
     assert_includes_and_joins_equal(
       Author.where('comments.id' => comments(:does_it_hurt).id).order('authors.id'),
       [authors(:david), authors(:mary)], :category_post_comments

activerecord/test/cases/dup_test.rb

@@ -108,18 +108,20 @@ def test_dup_after_initialize_callbacks
     end
 
     def test_dup_validity_is_independent
-      Topic.validates_presence_of :title
-      topic = Topic.new("title" => "Litterature")
-      topic.valid?
-
-      duped = topic.dup
-      duped.title = nil
-      assert duped.invalid?
-
-      topic.title = nil
-      duped.title = 'Mathematics'
-      assert topic.invalid?
-      assert duped.valid?
+      repair_validations(Topic) do
+        Topic.validates_presence_of :title
+        topic = Topic.new("title" => "Litterature")
+        topic.valid?
+
+        duped = topic.dup
+        duped.title = nil
+        assert duped.invalid?
+
+        topic.title = nil
+        duped.title = 'Mathematics'
+        assert topic.invalid?
+        assert duped.valid?
+      end
     end
   end
 end

activerecord/test/cases/migration_test.rb

@@ -30,9 +30,13 @@ def setup
     Reminder.reset_column_information
     ActiveRecord::Migration.verbose = true
     ActiveRecord::Migration.message_count = 0
+    ActiveRecord::Base.connection.schema_cache.clear!
   end
 
   def teardown
+    ActiveRecord::Base.table_name_prefix = ""
+    ActiveRecord::Base.table_name_suffix = ""
+
     ActiveRecord::Base.connection.initialize_schema_migrations_table
     ActiveRecord::Base.connection.execute "DELETE FROM #{ActiveRecord::Migrator.schema_migrations_table_name}"
 
@@ -44,6 +48,7 @@ def teardown
     %w(reminders people_reminders prefix_reminders_suffix).each do |table|
       Reminder.connection.drop_table(table) rescue nil
     end
+    Reminder.reset_table_name
     Reminder.reset_column_information
 
     %w(last_name key bio age height wealth birthday favorite_day
@@ -257,9 +262,6 @@ def test_schema_migrations_table_name
     ActiveRecord::Base.table_name_suffix = ""
     Reminder.reset_table_name
     assert_equal "schema_migrations", ActiveRecord::Migrator.schema_migrations_table_name
-  ensure
-    ActiveRecord::Base.table_name_prefix = ""
-    ActiveRecord::Base.table_name_suffix = ""
   end
 
   def test_proper_table_name
@@ -286,9 +288,6 @@ def test_proper_table_name
     Reminder.reset_table_name
     assert_equal "prefix_table_suffix", ActiveRecord::Migrator.proper_table_name('table')
     assert_equal "prefix_table_suffix", ActiveRecord::Migrator.proper_table_name(:table)
-    ActiveRecord::Base.table_name_prefix = ""
-    ActiveRecord::Base.table_name_suffix = ""
-    Reminder.reset_table_name
   end
 
   def test_rename_table_with_prefix_and_suffix
@@ -307,8 +306,6 @@ def test_rename_table_with_prefix_and_suffix
 
     assert_equal "hello world", Thing.first.content
   ensure
-    ActiveRecord::Base.table_name_prefix = ''
-    ActiveRecord::Base.table_name_suffix = ''
     Thing.reset_table_name
     Thing.reset_sequence_name
   end
@@ -326,9 +323,6 @@ def test_add_drop_table_with_prefix_and_suffix
     WeNeedReminders.down
     assert_raise(ActiveRecord::StatementInvalid) { Reminder.first }
   ensure
-    ActiveRecord::Base.table_name_prefix = ''
-    ActiveRecord::Base.table_name_suffix = ''
-    Reminder.reset_table_name
     Reminder.reset_sequence_name
   end
 
@@ -437,6 +431,8 @@ class BulkAlterTableMigrationsTest < ActiveRecord::TestCase
     def setup
       @connection = Person.connection
       @connection.create_table(:delete_me, :force => true) {|t| }
+      Person.reset_column_information
+      Person.reset_sequence_name
     end
 
     def teardown