chore(e2e): surface errors better in e2e test helper (#4195)

Author: kuhe

features/ec2/step_definitions/ec2.js

@@ -44,9 +44,9 @@ Given("I attempt to copy an encrypted snapshot across regions", function (callba
   const dstEc2 = new EC2({ region: destRegion });
 
   function teardown() {
-    if (volId) srcEc2.deleteVolume({ VolumeId: volId }).send();
-    if (srcSnapId) srcEc2.deleteSnapshot({ SnapshotId: srcSnapId }).send();
-    if (dstSnapId) dstEc2.deleteSnapshot({ SnapshotId: dstSnapId }).send();
+    if (volId) srcEc2.deleteVolume({ VolumeId: volId });
+    if (srcSnapId) srcEc2.deleteSnapshot({ SnapshotId: srcSnapId });
+    if (dstSnapId) dstEc2.deleteSnapshot({ SnapshotId: dstSnapId });
   }
 
   params = {

features/extra/helpers.js

@@ -77,10 +77,10 @@ module.exports = {
       world.data = data;
 
       try {
-        if (typeof next.condition === "function") {
+        if (next && typeof next.condition === "function") {
           const condition = next.condition.call(world, world);
           if (!condition) {
-            next.fail(new Error("Request success condition failed"));
+            next.fail(new Error("Request success condition failed."));
             return;
           }
         }
@@ -91,10 +91,16 @@ module.exports = {
         } else if (extra !== false && err) {
           world.unexpectedError(svc.config.signingName, operation, world.error.name, world.error.message, next);
         } else {
-          next.call(world);
+          if (typeof next.call === "function") {
+            next.call(world);
+          }
         }
       } catch (err) {
-        next.fail(err);
+        if (next && typeof next.fail === "function") {
+          next.fail(err);
+          return;
+        }
+        throw err;
       }
     });
   },
@@ -105,7 +111,12 @@ module.exports = {
    * operation failed.
    */
   unexpectedError: function unexpectedError(svc, op, name, msg, next) {
-    next.fail(new Error(`Received unexpected error from ${svc}.${op}, ${name}: ${msg}`));
+    var err = new Error(`Received unexpected error from ${svc}.${op}, ${name}: ${msg}`);
+    if (next && typeof next.fail === "function") {
+      next.fail(err);
+      return;
+    }
+    throw err;
   },
 
   /**

features/s3/step_definitions/buckets.js

@@ -7,8 +7,13 @@ Before({ tags: "@buckets" }, function () {
 
 After({ tags: "@buckets" }, function (callback) {
   if (this.bucket) {
-    this.request("s3", "deleteBucket", { Bucket: this.bucket }, callback);
-    this.bucket = undefined;
+    this.s3
+      .deleteBucket({ Bucket: this.bucket })
+      .catch(() => {})
+      .then(() => {
+        this.bucket = undefined;
+      })
+      .then(callback);
   } else {
     callback();
   }
@@ -33,7 +38,7 @@ Given(
 );
 
 When("I create a bucket with the location constraint {string}", function (location, callback) {
-  const bucket = (this.bucket = this.uniqueName("aws-sdk-js-integration"));
+  this.bucket = this.uniqueName("aws-sdk-js-integration");
   const params = {
     Bucket: this.bucket,
     CreateBucketConfiguration: {