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fsp_test.go
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// Copyright 2019 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 types
import (
"strconv"
. "github.com/pingcap/check"
)
var _ = Suite(&FspTest{})
type FspTest struct{}
func (s *FspTest) TestCheckFsp(c *C) {
c.Parallel()
obtained, err := CheckFsp(int(UnspecifiedFsp))
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, IsNil)
obtained, err = CheckFsp(-2019)
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, ErrorMatches, "Invalid fsp -2019")
obtained, err = CheckFsp(int(MinFsp) - 4294967296)
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MinFsp)-4294967296))
// UnspecifiedFsp
obtained, err = CheckFsp(-1)
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, IsNil)
obtained, err = CheckFsp(int(MaxFsp) + 1)
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MaxFsp)+1))
obtained, err = CheckFsp(int(MaxFsp) + 2019)
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MaxFsp)+2019))
obtained, err = CheckFsp(int(MaxFsp) + 4294967296)
c.Assert(obtained, Equals, DefaultFsp)
c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MaxFsp)+4294967296))
obtained, err = CheckFsp(int(MaxFsp+MinFsp) / 2)
c.Assert(obtained, Equals, (MaxFsp+MinFsp)/2)
c.Assert(err, IsNil)
obtained, err = CheckFsp(5)
c.Assert(obtained, Equals, int8(5))
c.Assert(err, IsNil)
}
func (s *FspTest) TestParseFrac(c *C) {
c.Parallel()
obtained, overflow, err := ParseFrac("", 5)
c.Assert(obtained, Equals, 0)
c.Assert(overflow, Equals, false)
c.Assert(err, IsNil)
a := 200
obtained, overflow, err = ParseFrac("999", int8(a))
c.Assert(obtained, Equals, 0)
c.Assert(overflow, Equals, false)
c.Assert(err, ErrorMatches, "Invalid fsp .*")
obtained, overflow, err = ParseFrac("NotNum", MaxFsp)
c.Assert(obtained, Equals, 0)
c.Assert(overflow, Equals, false)
c.Assert(err, ErrorMatches, "strconv.ParseInt:.*")
obtained, overflow, err = ParseFrac("1235", 6)
c.Assert(obtained, Equals, 123500)
c.Assert(overflow, Equals, false)
c.Assert(err, IsNil)
obtained, overflow, err = ParseFrac("123456", 4)
c.Assert(obtained, Equals, 123500)
c.Assert(overflow, Equals, false)
c.Assert(err, IsNil)
// 1236 round 3 -> 124 -> 124000
obtained, overflow, err = ParseFrac("1236", 3)
c.Assert(obtained, Equals, 124000)
c.Assert(overflow, Equals, false)
c.Assert(err, IsNil)
// 03123 round 2 -> 3 -> 30000
obtained, overflow, err = ParseFrac("0312", 2)
c.Assert(obtained, Equals, 30000)
c.Assert(overflow, Equals, false)
c.Assert(err, IsNil)
// 999 round 2 -> 100 -> overflow
obtained, overflow, err = ParseFrac("999", 2)
c.Assert(obtained, Equals, 0)
c.Assert(overflow, Equals, true)
c.Assert(err, IsNil)
}
func (s *FspTest) TestAlignFrac(c *C) {
c.Parallel()
obtained := alignFrac("100", 6)
c.Assert(obtained, Equals, "100000")
obtained = alignFrac("10000000000", 6)
c.Assert(obtained, Equals, "10000000000")
obtained = alignFrac("-100", 6)
c.Assert(obtained, Equals, "-100000")
obtained = alignFrac("-10000000000", 6)
c.Assert(obtained, Equals, "-10000000000")
}