Added mock key value store

Also changed around some of the naming.

internal/drivers/keyvaluedriver/interface.go

 package keyvaluedriver
 
-// KeyValueStore is an interface for a key value storage
-type KeyValueStore interface {
+// KeyValueStoreInterface is an interface for a key value storage
+type KeyValueStoreInterface interface {
 	Get(key *string) *string
 	Set(key *string, value interface{}) error
 }

internal/drivers/keyvaluedriver/redisdriver.go → internal/drivers/keyvaluedriver/keyvaluedriver.go

@@ -9,18 +9,18 @@ import (
 	"github.com/go-redis/redis/v8"
 )
 
-// RedisDriver models the redis driver
-type RedisDriver struct {
+// KeyValueDriver models the redis driver
+type KeyValueDriver struct {
 	client *redis.Client
 }
 
 // NewRedisDriver creates and returns a redis driver
-func NewRedisDriver() *RedisDriver {
-	return &RedisDriver{}
+func NewRedisDriver() *KeyValueDriver {
+	return &KeyValueDriver{}
 }
 
 // Start starts the redis driver
-func (d *RedisDriver) Start() {
+func (d *KeyValueDriver) Start() {
 	// Grab the redis host and port from environment vars
 	redisAddress := os.Getenv("REDIS_ADDRESS")
 	// redisPassword := os.Getenv("REDIS_PASSWORD")
@@ -35,13 +35,13 @@ func (d *RedisDriver) Start() {
 }
 
 // Get retrieves the value from the redis store that belongs to the given key
-func (d *RedisDriver) Get(key *string) *string {
+func (d *KeyValueDriver) Get(key *string) *string {
 	value := d.client.Get(context.Background(), *key).Val()
 	return &value
 }
 
 // Set sets the key value pair in the redis store
-func (d *RedisDriver) Set(key *string, value interface{}) error {
+func (d *KeyValueDriver) Set(key *string, value interface{}) error {
 	status := d.client.Set(context.Background(), *key, value, 0)
 	return status.Err()
 }

internal/drivers/keyvaluedriver/mock/mockkeyvaluedriver.go

+package mockkeyvaluedriver
+
+// A KeyValueStore implements methods to set key-value data (mock)
+type KeyValueStore struct {
+	data map[string]interface{}
+}
+
+// CreateKeyValueStore creates a key value store driver (mock)
+func CreateKeyValueStore() *KeyValueStore {
+	return &KeyValueStore{
+		data: make(map[string]interface{}),
+	}
+}
+
+// Set sets a key to a value in the key value store. Expects a non-pointer as value. (mock)
+func (kvs *KeyValueStore) Set(key *string, value interface{}) error {
+	kvs.data[*key] = value
+	return nil
+}
+
+// Get gets the value for the supplied key from the key value store (mock)
+func (kvs *KeyValueStore) Get(key *string) interface{} {
+	return kvs.data[*key]
+}