Added some general database tests.

README.md

@@ -4,19 +4,39 @@ Libra is a new, open, and extensible music service. Libra does what you want, ho
 
 ## Setup Steps
 
-Before anything else, you need to create the database. Install PostgreSQL and run the following commands:
+Before anything else, you need to set up the database. Install one of the following databases and follow its steps:
+
+<details>
+<summary>SQLite</summary>
+
+No additional steps are needed to use SQLite.
+</details>
+
+<details>
+
+<summary>PostgreSQL</summary>
+
+To create the PostgreSQL database, run the following commands:
 
 ```bash
 sudo -u postgres createuser -P libra
 sudo -u postgres createdb -O libra -E UTF-8 libra
 ```
+</details>
 
 Dependencies:
 
 - `SQLite` or `PostgreSQL`
 - `yt-dlp` and `ytmusicapi` for the YouTube source
 - `FFmpeg`
 
+## Development
+
+To run all tests, run `make test`.
+If you don't have every supported database type installed, you can skip database tests by setting the following environment variables:
+- `SKIP_SQLITE_TESTS`
+- `SKIP_POSTGRES_TESTS`
+
 ## Roadmap
 
 In the future, the project aims for the following:

config/config.go

@@ -162,7 +162,7 @@ func LoadConfig() (conf Config) {
 	viper.SetConfigType("yaml")
 	viper.AddConfigPath(".")
 
-	if err := readDefaultConfig(); err != nil {
+	if err := LoadDefaultConfig(); err != nil {
 		log.Fatal().Msg("Failed to read default config")
 		return
 	}
@@ -182,7 +182,7 @@ func LoadConfig() (conf Config) {
 	return
 }
 
-func readDefaultConfig() error {
+func LoadDefaultConfig() error {
 	return viper.ReadConfig(strings.NewReader(defaultConfig))
 }