test: adding error testing and a nock clean

testHelpers/vonageTest.ts

@@ -10,7 +10,14 @@ import { getResults } from './getResults';
  */
 export const VonageTest = <T>(testDataSets: TestTuple[]) => {
   describe.each<TestTuple>(testDataSets)('$label', ({ tests }) => {
-    test.each<SDKTestCase<T>>(tests)(
+    afterEach(function () {
+      nock.cleanAll();
+    });
+
+    const successTests = tests.filter(({ error }) => !error);
+    const failureTests = tests.filter(({ error }) => !!error);
+
+    test.each<SDKTestCase<T>>(successTests)(
       'Can $label',
       async ({
         baseUrl,
@@ -42,8 +49,38 @@ export const VonageTest = <T>(testDataSets: TestTuple[]) => {
 
         expect(results).toEqual(expected);
         expect(nock.isDone()).toBeTruthy();
+      },
+    );
+
+    if (failureTests.length < 1) {
+      return;
+    }
+
+    test.each(failureTests)(
+      'Will throw $label',
+      async ({
+        baseUrl,
+        reqHeaders,
+        requests,
+        responses,
+        client,
+        clientMethod,
+        parameters,
+      }) => {
+        const scope = nock(baseUrl, {
+          reqheaders: reqHeaders,
+        });
+
+        requests.forEach((request, index) => {
+          (scope as nock.Scope)
+            .intercept(...request)
+            .reply(...responses[index]);
+        });
+
+        await expect(() => client[clientMethod](...parameters)).rejects.toThrow(
+          error,
+        );
 
-        expect(results).toEqual(expected);
         expect(nock.isDone()).toBeTruthy();
       },
     );