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testutil.go
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testutil.go
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package blockchain
import (
"fmt"
"github.com/stretchr/testify/assert"
"github.com/dnerochain/dnero/common"
"github.com/dnerochain/dnero/core"
"github.com/dnerochain/dnero/store/database/backend"
"github.com/dnerochain/dnero/store/kvstore"
)
// CreateTestChain creates a chain for testing.
func CreateTestChain() *Chain {
store := kvstore.NewKVStore(backend.NewMemDatabase())
root := core.CreateTestBlock("a0", "")
chain := NewChain("testchain", store, root)
return chain
}
// CreateTestChainByBlocks creates a chain with given string slice in format:
// [block1_hash, block1_parent_hash, block2_hash, block1_parent_hash, ...]
func CreateTestChainByBlocks(pairs []string) *Chain {
chain := CreateTestChain()
for i := 0; i < len(pairs); i += 2 {
block := core.CreateTestBlock(pairs[i], pairs[i+1])
b, err := chain.AddBlock(block)
if err != nil {
panic(err)
}
b.Status = core.BlockStatusValid
chain.saveBlock(b)
}
return chain
}
// AreChainsEqual returns whehter two chains are the same.
func AreChainsEqual(ch1 *Chain, head1 common.Hash, ch2 *Chain, head2 common.Hash) (bool, string) {
if head1 != head2 {
return false, fmt.Sprintf("%v != %v", head1, head2)
}
c1, err := ch1.FindBlock(head1)
if err != nil {
return false, err.Error()
}
c2, err := ch2.FindBlock(head2)
if err != nil {
return false, err.Error()
}
if len(c1.Children) != len(c2.Children) {
return false, fmt.Sprintf("len(%v.Children) != len(%v.Children)", c1.Hash(), c2.Hash())
}
for i := 0; i < len(c1.Children); i++ {
eq, msg := AreChainsEqual(ch1, c1.Children[i], ch2, c2.Children[i])
if !eq {
return false, msg
}
}
return true, ""
}
// AssertChainsEqual asserts that two chains are the same.
func AssertChainsEqual(assert *assert.Assertions, ch1 *Chain, head1 common.Hash, ch2 *Chain, head2 common.Hash) {
eq, msg := AreChainsEqual(ch1, head1, ch2, head2)
assert.True(eq, msg)
}
// AssertChainsNotEqual asserts that two chains are not the same.
func AssertChainsNotEqual(assert *assert.Assertions, ch1 *Chain, head1 common.Hash, ch2 *Chain, head2 common.Hash) {
eq, _ := AreChainsEqual(ch1, head1, ch2, head2)
assert.False(eq)
}