feat(native): Add toBeEmptyElement (#142)

Author: kdquistanchala

packages/native/src/lib/ElementAssertion.ts

@@ -1,5 +1,6 @@
 import { Assertion, AssertionError } from "@assertive-ts/core";
 import { get } from "dot-prop-immutable";
+import { Children } from "react";
 import { ReactTestInstance } from "react-test-renderer";
 
 import { isAncestorDisabled, isElementDisabled, isAncestorNotVisible, isElementVisible } from "./helpers/accesibility";

packages/native/src/lib/helpers/helpers.ts

@@ -0,0 +1,15 @@
+import { ReactTestInstance } from "react-test-renderer";
+
+/**
+ * Converts a ReactTestInstance to a string representation.
+ *
+ * @param instance The ReactTestInstance to convert.
+ * @returns A string representation of the instance.
+ */
+export function instanceToString(instance: ReactTestInstance | null): string {
+  if (instance === null) {
+    return "null";
+  }
+
+  return `<${instance.type.toString()} ... />`;
+}