Function testReorg

core/blockchain_test.go:324–354

(t *testing.T, first, second []int64, td int64)

}

func testReorg(t *testing.T, first, second []int64, td int64) {
	// Create a pristine chain and database
	db := database.NewMemDatabase()
	blockchain, err := newCanonical(fakeDpor(db), 0, db)
	if err != nil {
		t.Fatalf("failed to create pristine chain: %v", err)
	}
	defer blockchain.Stop()

	remoteDB := database.NewIpfsDbWithAdapter(database.NewFakeIpfsAdapter())
	// Insert an easy and a difficult chain afterwards
	easyBlocks, _ := GenerateChain(configs.TestChainConfig, blockchain.CurrentBlock(), fakeDpor(db), db, remoteDB, len(first), func(i int, b *BlockGen) {
		b.OffsetTime(first[i])
	})
	diffBlocks, _ := GenerateChain(configs.TestChainConfig, blockchain.CurrentBlock(), fakeDpor(db), db, remoteDB, len(second), func(i int, b *BlockGen) {
		b.OffsetTime(second[i])
	})
	if _, err := blockchain.InsertChain(easyBlocks); err != nil {
		t.Fatalf("failed to insert easy chain: %v", err)
	}
	if _, err := blockchain.InsertChain(diffBlocks); err != nil {
		t.Fatalf("failed to insert difficult chain: %v", err)
	}
	// Check that the chain is valid number and link wise
	prev := blockchain.CurrentBlock()
	for block := blockchain.GetBlockByNumber(blockchain.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, blockchain.GetBlockByNumber(block.NumberU64()-1) {
		if prev.ParentHash() != block.Hash() {
			t.Errorf("parent block hash mismatch: have %x, want %x", prev.ParentHash(), block.Hash())
		}
	}
}

// Tests that the insertion functions detect banned hashes.