json-db 0.1.1

Simple library for a document database saved on disk
Documentation 
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#[cfg(test)]
mod tests {

    mod json_db {
        use crate::JsonDB;
        use serde::{Deserialize, Serialize};

        #[derive(Serialize, Deserialize, Debug)]
        struct Point {
            x: i32,
            y: i32,
        }

        #[test]
        fn init() -> Result<(), Box<dyn std::error::Error>> {
            let _db = JsonDB::init("db")?;
            Ok(())
        }

        #[test]
        fn create_collection() -> Result<(), Box<dyn std::error::Error>> {
            JsonDB::init("db")?.create_collection("test")?;
            Ok(())
        }

        #[test]
        fn write() -> Result<(), Box<dyn std::error::Error>> {
            JsonDB::init("db")?.write("test", "test", Point { x: 3, y: 5 })?;
            Ok(())
        }

        #[test]
        fn read() -> Result<(), Box<dyn std::error::Error>> {
            let test: Point = JsonDB::init("db")?.read("test", "test")?;
            assert_eq!(test.x, 3);
            assert_eq!(test.x, 5);
            Ok(())
        }

        #[test]
        fn delete() -> Result<(), Box<dyn std::error::Error>> {
            JsonDB::init("db")?.delete("books", "ell")?;
            Ok(())
        }
    }
}