1 files changed, 88 insertions, 0 deletions
diff --git a/common/resolver/resolver_test.go b/common/resolver/resolver_test.go
new file mode 100644
index 000000000..f5eb51437
--- /dev/null
+++ b/common/resolver/resolver_test.go
@@ -0,0 +1,88 @@
+package resolver
+
+import (
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+type testBackend struct {
+	// contracts mock
+	contracts map[string](map[string]string)
+}
+
+var (
+	text     = "test"
+	codehash = common.StringToHash("1234")
+	hash     = common.BytesToHash(crypto.Sha3([]byte(text)))
+	url      = "bzz://bzzhash/my/path/contr.act"
+)
+
+func NewTestBackend() *testBackend {
+	self := &testBackend{}
+	self.contracts = make(map[string](map[string]string))
+
+	self.contracts[HashRegContractAddress] = make(map[string]string)
+	key := storageAddress(storageMapping(storageIdx2Addr(1), codehash[:]))
+	self.contracts[HashRegContractAddress][key] = hash.Hex()
+
+	self.contracts[URLHintContractAddress] = make(map[string]string)
+	mapaddr := storageMapping(storageIdx2Addr(1), hash[:])
+
+	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(0)))
+	self.contracts[URLHintContractAddress][key] = common.ToHex([]byte(url))
+	key = storageAddress(storageFixedArray(mapaddr, storageIdx2Addr(1)))
+	self.contracts[URLHintContractAddress][key] = "0x00"
+
+	return self
+}
+
+func (self *testBackend) StorageAt(ca, sa string) (res string) {
+	c := self.contracts[ca]
+	if c == nil {
+		return
+	}
+	res = c[sa]
+	return
+}
+
+func TestKeyToContentHash(t *testing.T) {
+	b := NewTestBackend()
+	res := New(b, URLHintContractAddress, HashRegContractAddress)
+
+	got, err := res.KeyToContentHash(codehash)
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	} else {
+		if got != hash {
+			t.Errorf("incorrect result, expected %x, got %x: ", hash.Hex(), got.Hex())
+		}
+	}
+}
+
+func TestContentHashToUrl(t *testing.T) {
+	b := NewTestBackend()
+	res := New(b, URLHintContractAddress, HashRegContractAddress)
+	got, err := res.ContentHashToUrl(hash)
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	} else {
+		if string(got) != url {
+			t.Errorf("incorrect result, expected %v, got %s: ", url, string(got))
+		}
+	}
+}
+
+func TestKeyToUrl(t *testing.T) {
+	b := NewTestBackend()
+	res := New(b, URLHintContractAddress, HashRegContractAddress)
+	got, _, err := res.KeyToUrl(codehash)
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	} else {
+		if string(got) != url {
+			t.Errorf("incorrect result, expected %v, got %s: ", url, string(got))
+		}
+	}
+}