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133 lines
3.8 KiB
133 lines
3.8 KiB
// Copyright 2019 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 types
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import (
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"strconv"
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. "github.com/pingcap/check"
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)
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var _ = Suite(&FspTest{})
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type FspTest struct{}
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func (s *FspTest) TestCheckFsp(c *C) {
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c.Parallel()
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obtained, err := CheckFsp(int(UnspecifiedFsp))
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, IsNil)
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obtained, err = CheckFsp(-2019)
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, ErrorMatches, "Invalid fsp -2019")
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obtained, err = CheckFsp(int(MinFsp) - 4294967296)
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MinFsp)-4294967296))
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// UnspecifiedFsp
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obtained, err = CheckFsp(-1)
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, IsNil)
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obtained, err = CheckFsp(int(MaxFsp) + 1)
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MaxFsp)+1))
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obtained, err = CheckFsp(int(MaxFsp) + 2019)
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MaxFsp)+2019))
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obtained, err = CheckFsp(int(MaxFsp) + 4294967296)
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c.Assert(obtained, Equals, DefaultFsp)
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c.Assert(err, ErrorMatches, "Invalid fsp "+strconv.Itoa(int(MaxFsp)+4294967296))
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obtained, err = CheckFsp(int(MaxFsp+MinFsp) / 2)
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c.Assert(obtained, Equals, (MaxFsp+MinFsp)/2)
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c.Assert(err, IsNil)
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obtained, err = CheckFsp(5)
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c.Assert(obtained, Equals, int8(5))
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c.Assert(err, IsNil)
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}
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func (s *FspTest) TestParseFrac(c *C) {
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c.Parallel()
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obtained, overflow, err := ParseFrac("", 5)
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c.Assert(obtained, Equals, 0)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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a := 200
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obtained, overflow, err = ParseFrac("999", int8(a))
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c.Assert(obtained, Equals, 0)
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c.Assert(overflow, Equals, false)
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c.Assert(err, ErrorMatches, "Invalid fsp .*")
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obtained, overflow, err = ParseFrac("NotNum", MaxFsp)
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c.Assert(obtained, Equals, 0)
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c.Assert(overflow, Equals, false)
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c.Assert(err, ErrorMatches, "strconv.ParseInt:.*")
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obtained, overflow, err = ParseFrac("1235", 6)
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c.Assert(obtained, Equals, 123500)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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obtained, overflow, err = ParseFrac("123456", 4)
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c.Assert(obtained, Equals, 123500)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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obtained, overflow, err = ParseFrac("1234567", 6)
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c.Assert(obtained, Equals, 123457)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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obtained, overflow, err = ParseFrac("1234567", 4)
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c.Assert(obtained, Equals, 123500)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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// 1236 round 3 -> 124 -> 124000
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obtained, overflow, err = ParseFrac("1236", 3)
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c.Assert(obtained, Equals, 124000)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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// 03123 round 2 -> 3 -> 30000
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obtained, overflow, err = ParseFrac("0312", 2)
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c.Assert(obtained, Equals, 30000)
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c.Assert(overflow, Equals, false)
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c.Assert(err, IsNil)
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// 999 round 2 -> 100 -> overflow
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obtained, overflow, err = ParseFrac("999", 2)
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c.Assert(obtained, Equals, 0)
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c.Assert(overflow, Equals, true)
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c.Assert(err, IsNil)
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}
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func (s *FspTest) TestAlignFrac(c *C) {
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c.Parallel()
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obtained := alignFrac("100", 6)
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c.Assert(obtained, Equals, "100000")
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obtained = alignFrac("10000000000", 6)
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c.Assert(obtained, Equals, "10000000000")
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obtained = alignFrac("-100", 6)
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c.Assert(obtained, Equals, "-100000")
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obtained = alignFrac("-10000000000", 6)
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c.Assert(obtained, Equals, "-10000000000")
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}
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