Add core test

core/blockchain_test.go

@@ -0,0 +1,32 @@
+package core
+
+import (
+	"testing"
+)
+
+func Test_generateGenesisBlock(t *testing.T) {
+	genesisBlock := generateGenesisBlock()
+
+	if len(genesisBlock.PreviousHash) > 1 {
+		t.Errorf("Previous hash of Genesis Block is not empty!")
+	}
+}
+
+func TestNewBlockchain(t *testing.T) {
+	blockchain := NewBlockchain()
+
+	if len(blockchain.Blocks) != 1 {
+		t.Errorf("New Blockchain has too many Blocks (Besides Genesis)")
+	}
+}
+
+func TestBlockchain_GetLastHash(t *testing.T) {
+	blockchain := NewBlockchain()
+
+	blockchain.AddBlock(Block{})
+	want := blockchain.Blocks[1].Hash
+	got := blockchain.GetLastHash()
+	if got != want {
+		t.Errorf("Want: %v, but got %v", want, got)
+	}
+}