github.com/adnan-c/fabric_e2e_couchdb@v0.6.1-preview.0.20170228180935-21ce6b23cf91/common/ledger/util/leveldbhelper/leveldb_helper_test.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 leveldbhelper
    18  
    19  import (
    20  	"fmt"
    21  	"os"
    22  	"testing"
    23  
    24  	"github.com/hyperledger/fabric/common/ledger/testutil"
    25  )
    26  
    27  const testDBPath = "/tmp/fabric/ledgertests/util/leveldbhelper"
    28  
    29  func TestDBBasicWriteAndReads(t *testing.T) {
    30  	testDBBasicWriteAndReads(t, "db1", "db2", "")
    31  }
    32  
    33  func testDBBasicWriteAndReads(t *testing.T, dbNames ...string) {
    34  	p := createTestDBProvider(t)
    35  	defer p.Close()
    36  	for _, dbName := range dbNames {
    37  		db := p.GetDBHandle(dbName)
    38  		db.Put([]byte("key1"), []byte("value1_"+dbName), false)
    39  		db.Put([]byte("key2"), []byte("value2_"+dbName), false)
    40  		db.Put([]byte("key3"), []byte("value3_"+dbName), false)
    41  	}
    42  
    43  	for _, dbName := range dbNames {
    44  		db := p.GetDBHandle(dbName)
    45  		val, err := db.Get([]byte("key1"))
    46  		testutil.AssertNoError(t, err, "")
    47  		testutil.AssertEquals(t, val, []byte("value1_"+dbName))
    48  
    49  		val, err = db.Get([]byte("key2"))
    50  		testutil.AssertNoError(t, err, "")
    51  		testutil.AssertEquals(t, val, []byte("value2_"+dbName))
    52  
    53  		val, err = db.Get([]byte("key3"))
    54  		testutil.AssertNoError(t, err, "")
    55  		testutil.AssertEquals(t, val, []byte("value3_"+dbName))
    56  	}
    57  }
    58  
    59  func TestIterator(t *testing.T) {
    60  	p := createTestDBProvider(t)
    61  	defer p.Close()
    62  	db1 := p.GetDBHandle("db1")
    63  	db2 := p.GetDBHandle("db2")
    64  	db3 := p.GetDBHandle("db3")
    65  	for i := 0; i < 20; i++ {
    66  		db1.Put([]byte(createTestKey(i)), []byte(createTestValue("db1", i)), false)
    67  		db2.Put([]byte(createTestKey(i)), []byte(createTestValue("db2", i)), false)
    68  		db3.Put([]byte(createTestKey(i)), []byte(createTestValue("db3", i)), false)
    69  	}
    70  
    71  	itr1 := db2.GetIterator([]byte(createTestKey(2)), []byte(createTestKey(4)))
    72  	defer itr1.Release()
    73  	checkItrResults(t, itr1, createTestKeys(2, 3), createTestValues("db2", 2, 3))
    74  
    75  	itr2 := db2.GetIterator([]byte(createTestKey(2)), nil)
    76  	defer itr2.Release()
    77  	checkItrResults(t, itr2, createTestKeys(2, 19), createTestValues("db2", 2, 19))
    78  
    79  	itr3 := db2.GetIterator(nil, nil)
    80  	defer itr3.Release()
    81  	checkItrResults(t, itr3, createTestKeys(0, 19), createTestValues("db2", 0, 19))
    82  }
    83  
    84  func checkItrResults(t *testing.T, itr *Iterator, expectedKeys []string, expectedValues []string) {
    85  	defer itr.Release()
    86  	var actualKeys []string
    87  	var actualValues []string
    88  	for itr.Next(); itr.Valid(); itr.Next() {
    89  		actualKeys = append(actualKeys, string(itr.Key()))
    90  		actualValues = append(actualValues, string(itr.Value()))
    91  	}
    92  	testutil.AssertEquals(t, actualKeys, expectedKeys)
    93  	testutil.AssertEquals(t, actualValues, expectedValues)
    94  	testutil.AssertEquals(t, itr.Next(), false)
    95  }
    96  
    97  func createTestKey(i int) string {
    98  	return fmt.Sprintf("key_%06d", i)
    99  }
   100  
   101  func createTestValue(dbname string, i int) string {
   102  	return fmt.Sprintf("value_%s_%06d", dbname, i)
   103  }
   104  
   105  func createTestKeys(start int, end int) []string {
   106  	var keys []string
   107  	for i := start; i <= end; i++ {
   108  		keys = append(keys, createTestKey(i))
   109  	}
   110  	return keys
   111  }
   112  
   113  func createTestValues(dbname string, start int, end int) []string {
   114  	var values []string
   115  	for i := start; i <= end; i++ {
   116  		values = append(values, createTestValue(dbname, i))
   117  	}
   118  	return values
   119  }
   120  
   121  func createTestDBProvider(t *testing.T) *Provider {
   122  	if err := os.RemoveAll(testDBPath); err != nil {
   123  		t.Fatalf("Error:%s", err)
   124  	}
   125  	dbConf := &Conf{testDBPath}
   126  	return NewProvider(dbConf)
   127  }