// Copyright 2015 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.

package expression

import (
	. "github.com/pingcap/check"
)

var _ = Suite(&testPExprSuite{})

type testPExprSuite struct {
}

func (t *testPExprSuite) TestPExpr(c *C) {
	e := &PExpr{
		Expr: Value{1},
	}

	c.Assert(e.IsStatic(), IsTrue)

	str := e.String()
	c.Assert(len(str), Greater, 0)

	ec := e.Clone()

	v, err := ec.Eval(nil, nil)
	c.Assert(err, IsNil)
	c.Assert(v, Equals, 1)
}