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use crate::{
debug_print, error::*, DatabaseConnection, DbBackend, ExecResult, MockDatabase, QueryResult,
Statement, Transaction,
};
use std::sync::{
atomic::{AtomicUsize, Ordering},
Mutex,
};
pub struct MockDatabaseConnector;
pub struct MockDatabaseConnection {
counter: AtomicUsize,
mocker: Mutex<Box<dyn MockDatabaseTrait>>,
}
pub trait MockDatabaseTrait: Send {
fn execute(&mut self, counter: usize, stmt: Statement) -> Result<ExecResult, DbErr>;
fn query(&mut self, counter: usize, stmt: Statement) -> Result<Vec<QueryResult>, DbErr>;
fn drain_transaction_log(&mut self) -> Vec<Transaction>;
fn get_database_backend(&self) -> DbBackend;
}
impl MockDatabaseConnector {
#[allow(unused_variables)]
pub fn accepts(string: &str) -> bool {
#[cfg(feature = "sqlx-mysql")]
if crate::SqlxMySqlConnector::accepts(string) {
return true;
}
#[cfg(feature = "sqlx-postgres")]
if crate::SqlxPostgresConnector::accepts(string) {
return true;
}
#[cfg(feature = "sqlx-sqlite")]
if crate::SqlxSqliteConnector::accepts(string) {
return true;
}
false
}
#[allow(unused_variables)]
pub async fn connect(string: &str) -> Result<DatabaseConnection, DbErr> {
macro_rules! connect_mock_db {
( $syntax: expr ) => {
Ok(DatabaseConnection::MockDatabaseConnection(
MockDatabaseConnection::new(MockDatabase::new($syntax)),
))
};
}
#[cfg(feature = "sqlx-mysql")]
if crate::SqlxMySqlConnector::accepts(string) {
return connect_mock_db!(DbBackend::MySql);
}
#[cfg(feature = "sqlx-postgres")]
if crate::SqlxPostgresConnector::accepts(string) {
return connect_mock_db!(DbBackend::Postgres);
}
#[cfg(feature = "sqlx-sqlite")]
if crate::SqlxSqliteConnector::accepts(string) {
return connect_mock_db!(DbBackend::Sqlite);
}
connect_mock_db!(DbBackend::Postgres)
}
}
impl MockDatabaseConnection {
pub fn new<M: 'static>(m: M) -> Self
where
M: MockDatabaseTrait,
{
Self {
counter: AtomicUsize::new(0),
mocker: Mutex::new(Box::new(m)),
}
}
pub fn get_mocker_mutex(&self) -> &Mutex<Box<dyn MockDatabaseTrait>> {
&self.mocker
}
pub async fn execute(&self, statement: Statement) -> Result<ExecResult, DbErr> {
debug_print!("{}", statement);
let counter = self.counter.fetch_add(1, Ordering::SeqCst);
self.mocker.lock().unwrap().execute(counter, statement)
}
pub async fn query_one(&self, statement: Statement) -> Result<Option<QueryResult>, DbErr> {
debug_print!("{}", statement);
let counter = self.counter.fetch_add(1, Ordering::SeqCst);
let result = self.mocker.lock().unwrap().query(counter, statement)?;
Ok(result.into_iter().next())
}
pub async fn query_all(&self, statement: Statement) -> Result<Vec<QueryResult>, DbErr> {
debug_print!("{}", statement);
let counter = self.counter.fetch_add(1, Ordering::SeqCst);
self.mocker.lock().unwrap().query(counter, statement)
}
pub fn get_database_backend(&self) -> DbBackend {
self.mocker.lock().unwrap().get_database_backend()
}
}