tests, use drop_table if_exists: true in our test suite.

activerecord/test/cases/adapters/mysql2/schema_migrations_test.rb

@@ -16,7 +16,7 @@ module ActiveRecord
 
         def test_initializes_schema_migrations_for_encoding_utf8mb4
           smtn = ActiveRecord::Migrator.schema_migrations_table_name
-          connection.drop_table(smtn) if connection.table_exists?(smtn)
+          connection.drop_table smtn, if_exists: true
 
           config = connection.instance_variable_get(:@config)
           original_encoding = config[:encoding]

activerecord/test/cases/associations/required_test.rb

@@ -18,8 +18,8 @@ class RequiredAssociationsTest < ActiveRecord::TestCase
   end
 
   teardown do
-    @connection.drop_table 'parents' if @connection.table_exists? 'parents'
-    @connection.drop_table 'children' if @connection.table_exists? 'children'
+    @connection.drop_table 'parents', if_exists: true
+    @connection.drop_table 'children', if_exists: true
   end
 
   test "belongs_to associations are not required by default" do

activerecord/test/cases/attribute_decorators_test.rb

@@ -28,7 +28,7 @@ module ActiveRecord
 
     teardown do
       return unless @connection
-      @connection.drop_table 'attribute_decorators_model' if @connection.table_exists? 'attribute_decorators_model'
+      @connection.drop_table 'attribute_decorators_model', if_exists: true
       Model.attribute_type_decorations.clear
       Model.reset_column_information
     end

activerecord/test/cases/defaults_test.rb

@@ -40,7 +40,7 @@ class DefaultNumbersTest < ActiveRecord::TestCase
   end
 
   teardown do
-    @connection.drop_table "default_numbers" if @connection.table_exists? 'default_numbers'
+    @connection.drop_table :default_numbers, if_exists: true
   end
 
   def test_default_positive_integer

activerecord/test/cases/migration/change_schema_test.rb

@@ -437,7 +437,7 @@ module ActiveRecord
 
         teardown do
           [:wagons, :trains].each do |table|
-            @connection.drop_table(table) if @connection.table_exists?(table)
+            @connection.drop_table table, if_exists: true
           end
         end
 

activerecord/test/cases/migration/foreign_key_test.rb

@@ -29,8 +29,8 @@ module ActiveRecord
 
       teardown do
         if defined?(@connection)
-          @connection.drop_table "astronauts" if @connection.table_exists? 'astronauts'
-          @connection.drop_table "rockets" if @connection.table_exists? 'rockets'
+          @connection.drop_table "astronauts", if_exists: true
+          @connection.drop_table "rockets", if_exists: true
         end
       end
 

activerecord/test/cases/migration/rename_table_test.rb

@@ -86,8 +86,8 @@ module ActiveRecord
           assert connection.table_exists? :felines
         ensure
           disable_extension!('uuid-ossp', connection)
-          connection.drop_table :cats if connection.table_exists? :cats
-          connection.drop_table :felines if connection.table_exists? :felines
+          connection.drop_table :cats, if_exists: true
+          connection.drop_table :felines, if_exists: true
         end
       end
     end

activerecord/test/cases/migration/table_and_index_test.rb

@@ -6,11 +6,11 @@ module ActiveRecord
       def test_add_schema_info_respects_prefix_and_suffix
         conn = ActiveRecord::Base.connection
 
-        conn.drop_table(ActiveRecord::Migrator.schema_migrations_table_name) if conn.table_exists?(ActiveRecord::Migrator.schema_migrations_table_name)
+        conn.drop_table(ActiveRecord::Migrator.schema_migrations_table_name, if_exists: true)
         # Use shorter prefix and suffix as in Oracle database identifier cannot be larger than 30 characters
         ActiveRecord::Base.table_name_prefix = 'p_'
         ActiveRecord::Base.table_name_suffix = '_s'
-        conn.drop_table(ActiveRecord::Migrator.schema_migrations_table_name) if conn.table_exists?(ActiveRecord::Migrator.schema_migrations_table_name)
+        conn.drop_table(ActiveRecord::Migrator.schema_migrations_table_name, if_exists: true)
 
         conn.initialize_schema_migrations_table
 

activerecord/test/cases/migration_test.rb

@@ -90,7 +90,7 @@ class MigrationTest < ActiveRecord::TestCase
   end
 
   def test_migration_detection_without_schema_migration_table
-    ActiveRecord::Base.connection.drop_table('schema_migrations') if ActiveRecord::Base.connection.table_exists?('schema_migrations')
+    ActiveRecord::Base.connection.drop_table 'schema_migrations', if_exists: true
 
     migrations_path = MIGRATIONS_ROOT + "/valid"
     old_path = ActiveRecord::Migrator.migrations_paths