github.com/leonlxy/hyperledger@v1.0.0-alpha.0.20170427033203-34922035d248/core/ledger/testutil/test_util.go (about)

     1  /*
     2  Copyright IBM Corp. 2016 All Rights Reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8  		 http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package testutil
    18  
    19  import (
    20  	"flag"
    21  	"fmt"
    22  	mathRand "math/rand"
    23  	"regexp"
    24  	"strings"
    25  	"time"
    26  
    27  	"github.com/hyperledger/fabric/core/config"
    28  	"github.com/op/go-logging"
    29  	"github.com/spf13/viper"
    30  )
    31  
    32  // TestRandomNumberGenerator a random number generator for testing
    33  type TestRandomNumberGenerator struct {
    34  	rand      *mathRand.Rand
    35  	maxNumber int
    36  }
    37  
    38  // NewTestRandomNumberGenerator constructs a new `TestRandomNumberGenerator`
    39  func NewTestRandomNumberGenerator(maxNumber int) *TestRandomNumberGenerator {
    40  	return &TestRandomNumberGenerator{
    41  		mathRand.New(mathRand.NewSource(time.Now().UnixNano())),
    42  		maxNumber,
    43  	}
    44  }
    45  
    46  // Next generates next random number
    47  func (randNumGenerator *TestRandomNumberGenerator) Next() int {
    48  	return randNumGenerator.rand.Intn(randNumGenerator.maxNumber)
    49  }
    50  
    51  // SetupTestConfig sets up configurations for tetsing
    52  func SetupTestConfig() {
    53  	viper.AddConfigPath(".")
    54  	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
    55  	viper.AutomaticEnv()
    56  	viper.SetDefault("peer.ledger.test.loadYAML", true)
    57  	loadYAML := viper.GetBool("peer.ledger.test.loadYAML")
    58  	if loadYAML {
    59  		viper.SetConfigName("test")
    60  		err := viper.ReadInConfig()
    61  		if err != nil { // Handle errors reading the config file
    62  			panic(fmt.Errorf("Fatal error config file: %s \n", err))
    63  		}
    64  	}
    65  	var formatter = logging.MustStringFormatter(
    66  		`%{color}%{time:15:04:05.000} [%{module}] %{shortfunc} [%{shortfile}] -> %{level:.4s} %{id:03x}%{color:reset} %{message}`,
    67  	)
    68  	logging.SetFormatter(formatter)
    69  }
    70  
    71  // SetupCoreYAMLConfig sets up configurations for testing
    72  func SetupCoreYAMLConfig() {
    73  	viper.SetConfigName("core")
    74  	viper.SetEnvPrefix("CORE")
    75  	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
    76  	viper.AutomaticEnv()
    77  
    78  	err := config.AddDevConfigPath(nil)
    79  	if err != nil {
    80  		panic(fmt.Errorf("Fatal error adding dev dir: %s \n", err))
    81  	}
    82  
    83  	err = viper.ReadInConfig()
    84  	if err != nil { // Handle errors reading the config file
    85  		panic(fmt.Errorf("Fatal error config file: %s \n", err))
    86  	}
    87  }
    88  
    89  // ResetConfigToDefaultValues resets configurations optins back to defaults
    90  func ResetConfigToDefaultValues() {
    91  	//reset to defaults
    92  	viper.Set("ledger.state.stateDatabase", "goleveldb")
    93  	viper.Set("ledger.history.enableHistoryDatabase", false)
    94  }
    95  
    96  // SetLogLevel sets up log level
    97  func SetLogLevel(level logging.Level, module string) {
    98  	logging.SetLevel(level, module)
    99  }
   100  
   101  // ParseTestParams parses tests params
   102  func ParseTestParams() []string {
   103  	testParams := flag.String("testParams", "", "Test specific parameters")
   104  	flag.Parse()
   105  	regex, err := regexp.Compile(",(\\s+)?")
   106  	if err != nil {
   107  		panic(fmt.Errorf("err = %s\n", err))
   108  	}
   109  	paramsArray := regex.Split(*testParams, -1)
   110  	return paramsArray
   111  }