Adding test to ensure list objects returns an error for non existant buckets to match previous bug fix and fix for inmemory

pkg/storage/inmemory/inmemory.go

@@ -88,6 +88,9 @@ func (storage *storage) StoreBucket(bucketName string) error {
 }
 
 func (storage *storage) ListObjects(bucket, prefix string, count int) ([]mstorage.ObjectMetadata, bool, error) {
+	if _, ok := storage.bucketdata[bucket]; ok == false {
+		return []mstorage.ObjectMetadata{}, false, mstorage.BucketNotFound{Bucket: bucket}
+	}
 	// TODO prefix and count handling
 	var results []mstorage.ObjectMetadata
 	var keys []string

pkg/storage/storage_api_suite.go

@@ -2,6 +2,7 @@ package storage
 
 import (
 	"bytes"
+	"log"
 	"math/rand"
 	"strconv"
 
@@ -18,6 +19,7 @@ func APITestSuite(c *C, create func() Storage) {
 	testPutObjectInSubdir(c, create)
 	testListBuckets(c, create)
 	testListBucketsOrder(c, create)
+	testListObjectsTestsForNonExistantBucket(c, create)
 }
 
 func testCreateBucket(c *C, create func() Storage) {
@@ -196,6 +198,8 @@ func testListBuckets(c *C, create func() Storage) {
 }
 
 func testListBucketsOrder(c *C, create func() Storage) {
+	// if implementation contains a map, order of map keys will vary.
+	// this ensures they return in the same order each time
 	for i := 0; i < 10; i++ {
 		storage := create()
 		// add one and test exists
@@ -209,3 +213,12 @@ func testListBucketsOrder(c *C, create func() Storage) {
 		c.Assert(buckets[1].Name, Equals, "bucket2")
 	}
 }
+
+func testListObjectsTestsForNonExistantBucket(c *C, create func() Storage) {
+	storage := create()
+	objects, isTruncated, err := storage.ListObjects("bucket", "", 1000)
+	log.Println("EH:", err)
+	c.Assert(err, Not(IsNil))
+	c.Assert(isTruncated, Equals, false)
+	c.Assert(len(objects), Equals, 0)
+}