121 lines
3.3 KiB
Go
121 lines
3.3 KiB
Go
// 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 evaluator
|
|
|
|
import (
|
|
"reflect"
|
|
|
|
. "github.com/pingcap/check"
|
|
"github.com/pingcap/tidb/util/testleak"
|
|
"github.com/pingcap/tidb/util/testutil"
|
|
"github.com/pingcap/tidb/util/types"
|
|
)
|
|
|
|
// tblToDtbl is a util function for test.
|
|
func tblToDtbl(i interface{}) []map[string][]types.Datum {
|
|
l := reflect.ValueOf(i).Len()
|
|
tbl := make([]map[string][]types.Datum, l)
|
|
for j := 0; j < l; j++ {
|
|
v := reflect.ValueOf(i).Index(j).Interface()
|
|
val := reflect.ValueOf(v)
|
|
t := reflect.TypeOf(v)
|
|
item := make(map[string][]types.Datum, val.NumField())
|
|
for k := 0; k < val.NumField(); k++ {
|
|
tmp := val.Field(k).Interface()
|
|
item[t.Field(k).Name] = makeDatums(tmp)
|
|
}
|
|
tbl[j] = item
|
|
}
|
|
return tbl
|
|
}
|
|
|
|
func makeDatums(i interface{}) []types.Datum {
|
|
if i != nil {
|
|
t := reflect.TypeOf(i)
|
|
val := reflect.ValueOf(i)
|
|
switch t.Kind() {
|
|
case reflect.Slice:
|
|
l := val.Len()
|
|
res := make([]types.Datum, l)
|
|
for j := 0; j < l; j++ {
|
|
res[j] = types.NewDatum(val.Index(j).Interface())
|
|
}
|
|
return res
|
|
}
|
|
}
|
|
return types.MakeDatums(i)
|
|
}
|
|
|
|
func (s *testEvaluatorSuite) TestCoalesce(c *C) {
|
|
defer testleak.AfterTest(c)()
|
|
args := types.MakeDatums(1, nil)
|
|
v, err := builtinCoalesce(args, nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v, testutil.DatumEquals, types.NewDatum(1))
|
|
|
|
args = types.MakeDatums(nil, nil)
|
|
v, err = builtinCoalesce(args, nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v, testutil.DatumEquals, types.NewDatum(nil))
|
|
}
|
|
|
|
func (s *testEvaluatorSuite) TestGreatestFunc(c *C) {
|
|
defer testleak.AfterTest(c)()
|
|
|
|
v, err := builtinGreatest(types.MakeDatums(2, 0), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetInt64(), Equals, int64(2))
|
|
|
|
v, err = builtinGreatest(types.MakeDatums(34.0, 3.0, 5.0, 767.0), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetFloat64(), Equals, float64(767.0))
|
|
|
|
v, err = builtinGreatest(types.MakeDatums("B", "A", "C"), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetString(), Equals, "C")
|
|
|
|
// GREATEST() returns NULL if any argument is NULL.
|
|
v, err = builtinGreatest(types.MakeDatums(1, nil, 2), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.IsNull(), IsTrue)
|
|
}
|
|
|
|
func (s *testEvaluatorSuite) TestIsNullFunc(c *C) {
|
|
defer testleak.AfterTest(c)()
|
|
|
|
v, err := builtinIsNull(types.MakeDatums(1), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetInt64(), Equals, int64(0))
|
|
|
|
v, err = builtinIsNull(types.MakeDatums(nil), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetInt64(), Equals, int64(1))
|
|
}
|
|
|
|
func (s *testEvaluatorSuite) TestLock(c *C) {
|
|
defer testleak.AfterTest(c)()
|
|
|
|
v, err := builtinLock(types.MakeDatums(1), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetInt64(), Equals, int64(1))
|
|
|
|
v, err = builtinLock(types.MakeDatums(nil), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetInt64(), Equals, int64(1))
|
|
|
|
v, err = builtinReleaseLock(types.MakeDatums(1), nil)
|
|
c.Assert(err, IsNil)
|
|
c.Assert(v.GetInt64(), Equals, int64(1))
|
|
}
|