require "cases/helper"

module ActiveRecord
  module ConnectionAdapters
    class SQLite3AdapterTest < ActiveRecord::TestCase
      def test_connection_no_db
        assert_raises(ArgumentError) do
          Base.sqlite3_connection {}
        end
      end

      def test_connection_no_adapter
        assert_raises(ArgumentError) do
          Base.sqlite3_connection :database => ':memory:'
        end
      end

      def test_connection_wrong_adapter
        assert_raises(ArgumentError) do
          Base.sqlite3_connection :database => ':memory:',:adapter => 'vuvuzela'
        end
      end

      def test_bad_timeout
        assert_raises(TypeError) do
          Base.sqlite3_connection :database => ':memory:',
                                  :adapter => 'sqlite3',
                                  :timeout => 'usa'
        end
      end

      # connection is OK with a nil timeout
      def test_nil_timeout
        conn = Base.sqlite3_connection :database => ':memory:',
                                       :adapter => 'sqlite3',
                                       :timeout => nil
        assert conn, 'made a connection'
      end

      def test_connect
        conn = Base.sqlite3_connection :database => ':memory:',
                                       :adapter => 'sqlite3',
                                       :timeout => 100
        assert conn, 'should have connection'
      end

      # sqlite3 defaults to UTF-8 encoding
      def test_encoding
        conn = Base.sqlite3_connection :database => ':memory:',
                                       :adapter => 'sqlite3',
                                       :timeout => 100
        assert_equal 'UTF-8', conn.encoding
      end

      def test_bind_value_substitute
        conn = Base.sqlite3_connection :database => ':memory:',
                                       :adapter => 'sqlite3',
                                       :timeout => 100

        bind_param = conn.substitute_for('foo', [])
        assert_equal Arel.sql('?'), bind_param
      end

      def test_exec_no_binds
        conn = Base.sqlite3_connection :database => ':memory:',
                                       :adapter => 'sqlite3',
                                       :timeout => 100

        conn.exec('create table ex(id int, data string)')
        result = conn.exec('SELECT id, data FROM ex')
        assert_equal 0, result.rows.length
        assert_equal 2, result.columns.length
        assert_equal %w{ id data }, result.columns

        conn.exec('INSERT INTO ex (id, data) VALUES (1, "foo")')
        result = conn.exec('SELECT id, data FROM ex')
        assert_equal 1, result.rows.length
        assert_equal 2, result.columns.length

        assert_equal [[1, 'foo']], result.rows
      end

      def test_exec_with_binds
        conn = Base.sqlite3_connection :database => ':memory:',
                                       :adapter => 'sqlite3',
                                       :timeout => 100

        conn.exec('create table ex(id int, data string)')
        conn.exec('INSERT INTO ex (id, data) VALUES (1, "foo")')
        result = conn.exec(
          'SELECT id, data FROM ex WHERE id = ?', nil, [[nil, 1]])

        assert_equal 1, result.rows.length
        assert_equal 2, result.columns.length

        assert_equal [[1, 'foo']], result.rows
      end
    end
  end
end