diff --git a/storagedriver/filesystem/filesystem_test.go b/storagedriver/filesystem/filesystem_test.go
index c445e178..15ef9663 100644
--- a/storagedriver/filesystem/filesystem_test.go
+++ b/storagedriver/filesystem/filesystem_test.go
@@ -19,6 +19,6 @@ func init() {
 	filesystemDriverConstructor := func() (storagedriver.StorageDriver, error) {
 		return NewDriver(rootDirectory), nil
 	}
-	testsuites.RegisterInProcessSuite(filesystemDriverConstructor)
-	testsuites.RegisterIPCSuite("filesystem", map[string]string{"RootDirectory": rootDirectory})
+	testsuites.RegisterInProcessSuite(filesystemDriverConstructor, testsuites.NeverSkip)
+	testsuites.RegisterIPCSuite("filesystem", map[string]string{"RootDirectory": rootDirectory}, testsuites.NeverSkip)
 }
diff --git a/storagedriver/inmemory/inmemory_test.go b/storagedriver/inmemory/inmemory_test.go
index fa62d30d..accbb5f8 100644
--- a/storagedriver/inmemory/inmemory_test.go
+++ b/storagedriver/inmemory/inmemory_test.go
@@ -15,6 +15,6 @@ func init() {
 	inmemoryDriverConstructor := func() (storagedriver.StorageDriver, error) {
 		return NewDriver(), nil
 	}
-	testsuites.RegisterInProcessSuite(inmemoryDriverConstructor)
-	testsuites.RegisterIPCSuite("inmemory", nil)
+	testsuites.RegisterInProcessSuite(inmemoryDriverConstructor, testsuites.NeverSkip)
+	testsuites.RegisterIPCSuite("inmemory", nil, testsuites.NeverSkip)
 }
diff --git a/storagedriver/s3/s3_test.go b/storagedriver/s3/s3_test.go
index 400ec7ad..b6862ab9 100644
--- a/storagedriver/s3/s3_test.go
+++ b/storagedriver/s3/s3_test.go
@@ -24,6 +24,13 @@ func init() {
 		return NewDriver(accessKey, secretKey, aws.GetRegion(region), true, bucket)
 	}
 
-	testsuites.RegisterInProcessSuite(s3DriverConstructor)
-	testsuites.RegisterIPCSuite("s3", map[string]string{"accessKey": accessKey, "secretKey": secretKey, "region": region, "bucket": bucket, "encrypt": encrypt})
+	skipCheck := func() string {
+		if accessKey == "" || secretKey == "" || region == "" || bucket == "" || encrypt == "" {
+			return "Must set ACCESS_KEY, SECRET_KEY, AWS_REGION, S3_BUCKET, and S3_ENCRYPT to run S3 tests"
+		}
+		return ""
+	}
+
+	testsuites.RegisterInProcessSuite(s3DriverConstructor, skipCheck)
+	testsuites.RegisterIPCSuite("s3", map[string]string{"accessKey": accessKey, "secretKey": secretKey, "region": region, "bucket": bucket, "encrypt": encrypt}, skipCheck)
 }
diff --git a/storagedriver/testsuites/testsuites.go b/storagedriver/testsuites/testsuites.go
index dae5cc08..ff93b038 100644
--- a/storagedriver/testsuites/testsuites.go
+++ b/storagedriver/testsuites/testsuites.go
@@ -17,13 +17,14 @@ import (
 // Hook up gocheck into the "go test" runner
 func Test(t *testing.T) { TestingT(t) }
 
-func RegisterInProcessSuite(driverConstructor DriverConstructor) {
+func RegisterInProcessSuite(driverConstructor DriverConstructor, skipCheck SkipCheck) {
 	Suite(&DriverSuite{
 		Constructor: driverConstructor,
+		SkipCheck:   skipCheck,
 	})
 }
 
-func RegisterIPCSuite(driverName string, ipcParams map[string]string) {
+func RegisterIPCSuite(driverName string, ipcParams map[string]string, skipCheck SkipCheck) {
 	suite := &DriverSuite{
 		Constructor: func() (storagedriver.StorageDriver, error) {
 			d, err := ipc.NewDriverClient(driverName, ipcParams)
@@ -36,20 +37,30 @@ func RegisterIPCSuite(driverName string, ipcParams map[string]string) {
 			}
 			return d, nil
 		},
+		SkipCheck: skipCheck,
 	}
 	suite.Teardown = func() error {
+		if suite.StorageDriver == nil {
+			return nil
+		}
+
 		driverClient := suite.StorageDriver.(*ipc.StorageDriverClient)
 		return driverClient.Stop()
 	}
 	Suite(suite)
 }
 
+type SkipCheck func() (reason string)
+
+var NeverSkip = func() string { return "" }
+
 type DriverConstructor func() (storagedriver.StorageDriver, error)
 type DriverTeardown func() error
 
 type DriverSuite struct {
 	Constructor DriverConstructor
 	Teardown    DriverTeardown
+	SkipCheck
 	storagedriver.StorageDriver
 }
 
@@ -59,6 +70,9 @@ type TestDriverConfig struct {
 }
 
 func (suite *DriverSuite) SetUpSuite(c *C) {
+	if reason := suite.SkipCheck(); reason != "" {
+		c.Skip(reason)
+	}
 	d, err := suite.Constructor()
 	c.Assert(err, IsNil)
 	suite.StorageDriver = d
@@ -129,7 +143,7 @@ func (suite *DriverSuite) TestContinueStreamAppend(c *C) {
 	filename := randomString(32)
 	defer suite.StorageDriver.Delete(filename)
 
-	chunkSize := uint64(5 * 1024 * 1024)
+	chunkSize := uint64(10 * 1024 * 1024)
 
 	contentsChunk1 := []byte(randomString(chunkSize))
 	contentsChunk2 := []byte(randomString(chunkSize))