Add tests

e2e/assertion/credential-helper/docker-credential-devpod-esque

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+read -r URL
+
+
+if [[ "$URL" != "localhost:1447" ]]; then 
+    echo "expected registry url to be localhost:1447";
+    exit 1
+fi
+
+echo "{\"ServerURL\": \"$URL\", \"Username\": \"\", \"Secret\": \"\"}"
+

e2e/assertion/oci_pull_auth_tests.bats

@@ -163,4 +163,17 @@ EOF
     update_assert '{"Authorization": ["Basic not_match"]}'
     run bazel build @empty_image//... $BAZEL_FLAGS
     assert_failure
-}
+}
+
+@test "empty username and password succeeds" {
+    cat > "$DOCKER_CONFIG/config.json" <<EOF
+{
+  "credHelpers": {
+    "localhost:1447": "devpod-esque"
+  }
+}
+EOF
+    update_assert ''
+    run bazel build @empty_image//... $BAZEL_FLAGS
+    assert_success
+}