Call assume_migrated_upto_version on connection

Call assume_migrated_upto_version on connection to prevent it from first
being picked up in method_missing. In the base class, Migration,
method_missing expects the argument to be a table name, and calls
proper_table_name on the arguments before sending to connection. If
table_name_prefix or table_name_suffix is used, the schema version changes
to prefix_version_suffix, breaking `rake test:prepare`.

Fixes #10411.

activerecord/CHANGELOG.md

@@ -1,3 +1,14 @@
+*   Fix pending migrations error when loading schema and ActiveRecord::Base.table_name_prefix is not blank.
+
+    Call assume_migrated_upto_version on connection to prevent it from first being picked up in method_missing.
+    In the base class, Migration, method_missing expects the argument to be a table name, and calls proper_table_name
+    on the arguments before sending to connection. If table_name_prefix or table_name_suffix is used, the schema
+    version changes to prefix_version_suffix, breaking `rake test:prepare`.
+
+    Fixes #10411.
+
+    *Kyle Stevens*
+
 *   Method read_attribute_before_type_cast should accept input as symbol.
 
     *Neeraj Singh*

activerecord/lib/active_record/schema.rb

@@ -43,7 +43,7 @@ def define(info, &block) # :nodoc:
 
       unless info[:version].blank?
         initialize_schema_migrations_table
-        assume_migrated_upto_version(info[:version], migrations_paths)
+        connection.assume_migrated_upto_version(info[:version], migrations_paths)
       end
     end
 

activerecord/test/cases/ar_schema_test.rb

@@ -12,6 +12,8 @@ def setup
 
     def teardown
       @connection.drop_table :fruits rescue nil
+      @connection.drop_table :nep_fruits rescue nil
+      @connection.drop_table :nep_schema_migrations rescue nil
       ActiveRecord::SchemaMigration.delete_all rescue nil
     end
 
@@ -30,6 +32,24 @@ def test_schema_define
       assert_equal 7, ActiveRecord::Migrator::current_version
     end
 
+    def test_schema_define_w_table_name_prefix
+      table_name = ActiveRecord::SchemaMigration.table_name
+      ActiveRecord::Base.table_name_prefix  = "nep_"
+      ActiveRecord::SchemaMigration.table_name = "nep_#{table_name}"
+      ActiveRecord::Schema.define(:version => 7) do
+        create_table :fruits do |t|
+          t.column :color, :string
+          t.column :fruit_size, :string  # NOTE: "size" is reserved in Oracle
+          t.column :texture, :string
+          t.column :flavor, :string
+        end
+      end
+      assert_equal 7, ActiveRecord::Migrator::current_version
+    ensure
+      ActiveRecord::Base.table_name_prefix  = ""
+      ActiveRecord::SchemaMigration.table_name = table_name
+    end
+
     def test_schema_raises_an_error_for_invalid_column_type
       assert_raise NoMethodError do
         ActiveRecord::Schema.define(:version => 8) do