commit inicial do projeto

internal/transactions/validation_test.go

@@ -0,0 +1,48 @@
+package transactions_test
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"dejo_node/internal/transactions"
+	"testing"
+)
+
+func TestTransaction_IsValid(t *testing.T) {
+	priv, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	pub := &priv.PublicKey
+
+	tx := transactions.Transaction{
+		From:  "0xabc",
+		To:    "0xdef",
+		Value: 50,
+		Gas:   10,
+		Nonce: 1,
+	}
+	tx.Signature = tx.GenerateSignature(priv)
+
+	err := tx.IsValid(pub, 100, 1)
+	if err != nil {
+		t.Errorf("esperava transação válida, mas falhou: %v", err)
+	}
+}
+
+func TestTransaction_IsValid_InvalidSignature(t *testing.T) {
+	priv, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	wrongPriv, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	pub := &priv.PublicKey
+
+	tx := transactions.Transaction{
+		From:  "0xabc",
+		To:    "0xdef",
+		Value: 50,
+		Gas:   10,
+		Nonce: 1,
+	}
+	tx.Signature = tx.GenerateSignature(wrongPriv)
+
+	err := tx.IsValid(pub, 100, 1)
+	if err == nil {
+		t.Error("esperava falha na assinatura, mas foi aceita")
+	}
+}