Added trie tests, value tests

ethutil/trie_test.go

@@ -6,6 +6,8 @@ import (
 	"testing"
 )
 
+const LONG_WORD = "1234567890abcdefghijklmnopqrstuvwxxzABCEFGHIJKLMNOPQRSTUVWXYZ"
+
 type MemDatabase struct {
 	db map[string][]byte
 }
@@ -24,11 +26,15 @@ func (db *MemDatabase) Print()              {}
 func (db *MemDatabase) Close()              {}
 func (db *MemDatabase) LastKnownTD() []byte { return nil }
 
-func TestTrieSync(t *testing.T) {
+func New() (*MemDatabase, *Trie) {
 	db, _ := NewMemDatabase()
-	trie := NewTrie(db, "")
+	return db, NewTrie(db, "")
+}
 
-	trie.Update("dog", "kindofalongsentencewhichshouldbeencodedinitsentirety")
+func TestTrieSync(t *testing.T) {
+	db, trie := New()
+
+	trie.Update("dog", LONG_WORD)
 	if len(db.db) != 0 {
 		t.Error("Expected no data in database")
 	}
@@ -38,3 +44,55 @@ func TestTrieSync(t *testing.T) {
 		t.Error("Expected data to be persisted")
 	}
 }
+
+func TestTrieReset(t *testing.T) {
+	_, trie := New()
+
+	trie.Update("cat", LONG_WORD)
+	if len(trie.cache.nodes) == 0 {
+		t.Error("Expected cached nodes")
+	}
+
+	trie.cache.Undo()
+
+	if len(trie.cache.nodes) != 0 {
+		t.Error("Expected no nodes after undo")
+	}
+}
+
+func TestTrieGet(t *testing.T) {
+	_, trie := New()
+
+	trie.Update("cat", LONG_WORD)
+	x := trie.Get("cat")
+	if x != LONG_WORD {
+		t.Error("expected %s, got %s", LONG_WORD, x)
+	}
+}
+
+func TestTrieUpdating(t *testing.T) {
+	_, trie := New()
+	trie.Update("cat", LONG_WORD)
+	trie.Update("cat", LONG_WORD+"1")
+	x := trie.Get("cat")
+	if x != LONG_WORD+"1" {
+		t.Error("expected %S, got %s", LONG_WORD+"1", x)
+	}
+}
+
+func TestTrieCmp(t *testing.T) {
+	_, trie1 := New()
+	_, trie2 := New()
+
+	trie1.Update("doge", LONG_WORD)
+	trie2.Update("doge", LONG_WORD)
+	if !trie1.Cmp(trie2) {
+		t.Error("Expected tries to be equal")
+	}
+
+	trie1.Update("dog", LONG_WORD)
+	trie2.Update("cat", LONG_WORD)
+	if trie1.Cmp(trie2) {
+		t.Errorf("Expected tries not to be equal %x %x", trie1.Root, trie2.Root)
+	}
+}