1 files changed, 38 insertions, 0 deletions
diff --git a/storage/dummy.go b/storage/dummy.go
new file mode 100644
index 0000000..3d60921
--- /dev/null
+++ b/storage/dummy.go
@@ -0,0 +1,38 @@
+package storage
+
+// Dummy is a dummy storage device that acts predictably for tests
+type Dummy struct {
+	collide, healthy bool
+	err              error
+}
+
+// Create is a noop
+// if the backend was created unhealthy, it will error out with the unhealthy error
+// if the backend was set as colliding, and collision detection is enabled, it will error out with a collision
+// if the backend was set as erroring, it will error with that error
+func (d *Dummy) Create(key, value string, checkcollision bool) error {
+	if !d.Healthy() {
+		return Unhealthy
+	}
+	if checkcollision && d.collide {
+		return Collision
+	}
+	if d.err != nil {
+		return d.err
+	}
+	return nil
+}
+
+// Read will return the key that is sent to it, or error out if the backend was created unhealthy
+// Read echoes the key given to it back
+// if the backend was set to unhealthy, it also returns the Unhealthy error
+func (d *Dummy) Read(key string) (string, error) {
+	var err error
+	if !d.Healthy() {
+		err = Unhealthy
+	}
+	return key, err
+}
+
+// Healthy checks whether or not the backend was created healthy
+func (d *Dummy) Healthy() bool { return d.healthy }