github.com/whtcorpsinc/MilevaDB-Prod@v0.0.0-20211104133533-f57f4be3b597/causetstore/stochastikctx/variable/statusvar_test.go (about)

     1  // Copyright 2020 WHTCORPS INC, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package variable
    15  
    16  import (
    17  	. "github.com/whtcorpsinc/check"
    18  	"github.com/whtcorpsinc/milevadb/soliton/testleak"
    19  )
    20  
    21  var _ = Suite(&testStatusVarSuite{})
    22  
    23  type testStatusVarSuite struct {
    24  	ms *mockStatistics
    25  }
    26  
    27  func (s *testStatusVarSuite) SetUpSuite(c *C) {
    28  	s.ms = &mockStatistics{}
    29  	RegisterStatistics(s.ms)
    30  }
    31  
    32  // mockStatistics represents mocked statistics.
    33  type mockStatistics struct{}
    34  
    35  const (
    36  	testStatus        = "test_status"
    37  	testStochastikStatus = "test_stochastik_status"
    38  	testStatusVal     = "test_status_val"
    39  )
    40  
    41  var specificStatusScopes = map[string]ScopeFlag{
    42  	testStochastikStatus: ScopeStochastik,
    43  }
    44  
    45  func (ms *mockStatistics) GetScope(status string) ScopeFlag {
    46  	scope, ok := specificStatusScopes[status]
    47  	if !ok {
    48  		return DefaultStatusVarScopeFlag
    49  	}
    50  
    51  	return scope
    52  }
    53  
    54  func (ms *mockStatistics) Stats(vars *StochastikVars) (map[string]interface{}, error) {
    55  	m := make(map[string]interface{}, len(specificStatusScopes))
    56  	m[testStatus] = testStatusVal
    57  
    58  	return m, nil
    59  }
    60  
    61  func (s *testStatusVarSuite) TestStatusVar(c *C) {
    62  	defer testleak.AfterTest(c)()
    63  	scope := s.ms.GetScope(testStatus)
    64  	c.Assert(scope, Equals, DefaultStatusVarScopeFlag)
    65  	scope = s.ms.GetScope(testStochastikStatus)
    66  	c.Assert(scope, Equals, ScopeStochastik)
    67  
    68  	vars, err := GetStatusVars(nil)
    69  	c.Assert(err, IsNil)
    70  	v := &StatusVal{Scope: DefaultStatusVarScopeFlag, Value: testStatusVal}
    71  	c.Assert(v, DeepEquals, vars[testStatus])
    72  }