55 lines
1.1 KiB
Go
55 lines
1.1 KiB
Go
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package expression
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import (
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. "github.com/pingcap/check"
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)
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var _ = Suite(&testParamMarkerSuite{})
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type testParamMarkerSuite struct {
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}
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func (t *testParamMarkerSuite) TestParamMarker(c *C) {
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e := &ParamMarker{
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Expr: Value{1},
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}
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v, err := e.Eval(nil, nil)
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c.Assert(err, IsNil)
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c.Assert(v, Equals, 1)
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c.Assert(e.IsStatic(), IsFalse)
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str := e.String()
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c.Assert(len(str), Greater, 0)
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ec := e.Clone()
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e2, ok := ec.(*ParamMarker)
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c.Assert(ok, IsTrue)
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e2.Expr = nil
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vv, err := e2.Eval(nil, nil)
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c.Assert(err, IsNil)
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c.Assert(vv, IsNil)
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str = e2.String()
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c.Assert(str, Equals, "?")
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c.Assert(e2.Clone(), NotNil)
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}
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