add provider package tests

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

provider/provider_test.go

@@ -0,0 +1,17 @@
+package provider
+
+import (
+	"testing"
+)
+
+func TestProviderType(t *testing.T) {
+	if None.String() != "" {
+		t.Fatal("None provider type should be empty string")
+	}
+	if Local.String() != "Local" {
+		t.Fatal("Local provider type should be 'Local'")
+	}
+	if Remote.String() != "Remote" {
+		t.Fatal("Remote provider type should be 'Remote'")
+	}
+}