diff --git a/test/spec/runners/bls.ex b/test/spec/runners/bls.ex
index 38c974057..292e7e89a 100644
--- a/test/spec/runners/bls.ex
+++ b/test/spec/runners/bls.ex
@@ -137,14 +137,4 @@ defmodule BlsTestRunner do
     end
   end
 
-  # defp handle_case(
-  #        "key_validate",
-  #        %{pubkeys: pubkeys},
-  #        output
-  #      ) do
-  #   case Bls.key_validate(pubkeys) do
-  #     {:ok, true} ->
-  #       assert output
-  #   end
-  # end
 end
diff --git a/test/unit/bls_test.exs b/test/unit/bls_test.exs
new file mode 100644
index 000000000..b4aecf732
--- /dev/null
+++ b/test/unit/bls_test.exs
@@ -0,0 +1,30 @@
+def BlsTest do
+  use ExUnit.Case
+  use Rustler, otp_app: :lambda_ethereum_consensus, crate: "bls_nif"
+  alias Bls.key_validate, as: key_validate
+  describe "validate_key" do
+    test "returns true for valid public key" do
+      valid_public_key =  <<
+        0x8a, 0xfc, 0x8f, 0x13, 0x47, 0x90, 0x91, 0x4b,
+        0x4a, 0x15, 0xd2, 0xfa, 0x73, 0xb0, 0x7c, 0xaf,
+        0xd0, 0xd3, 0x08, 0x84, 0xfd, 0x80, 0xca, 0x22,
+        0x0c, 0x8b, 0x95, 0x03, 0xf5, 0xf6, 0x9c, 0x33,
+        0xdd, 0x27, 0x27, 0x5b, 0x12, 0x95, 0x43, 0xd2,
+        0xf7, 0xf8, 0xf6, 0x35, 0xa8, 0x18, 0x67, 0xa0
+      >>
+      assert key_validate(valid_public_key) == true
+    end
+    test "returns false for invalid public key" do
+      invalid_public_key =  <<
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+    >>
+    assert key_validate(valid_public_key) == false
+    end
+  end
+
+end