//! Extra tests!
//!
//! ```compile_fail
//! use std::mem;
//! use hexchat_unsafe_plugin::PluginHandle;
//!
//! fn prepoop_your_pants_pluginhandle(ph: &mut PluginHandle<'_>) {
//!     let temporary: String = "Hello, world!".to_string();
//!     let hook = ph.hook_timer(0, |_| {
//!         println!("{}", temporary);
//!         true
//!     });
//! }
//! ```
//!
//! ```compile_fail
//! use hexchat_unsafe_plugin::list::Contexts;
//! use hexchat_unsafe_plugin::PluginHandle;
//!
//! fn unsound(ph: &mut PluginHandle<'_>) {
//!     ph.ensure_valid_context(|mut ph| {
//!         let mut list = ph.list(&Contexts);
//!         let context = list.next().unwrap();
//!         write!(ph, "{}", context.name().unwrap());
//!         std::mem::forget(list);
//!         write!(ph, "{}", context.name().unwrap());
//!         let ctx = context.context();
//!         ph.set_context(&ctx);
//!         write!(ph, "{}", context.name().unwrap());
//!     })
//! }
//! ```
//!
//! ```compile_fail
//! use hexchat_unsafe_plugin::list::Contexts;
//! use hexchat_unsafe_plugin::PluginHandle;
//!
//! fn unsound(ph: &mut PluginHandle<'_>) {
//!     ph.ensure_valid_context(|mut ph| {
//!         let mut list = ph.list(&Contexts);
//!         let context = list.next().unwrap();
//!         std::mem::forget(list);
//!         let ctx = context.context();
//!         ph.set_context(&ctx);
//!     })
//! }
//! ```
//!
//! ```no_run
//! use hexchat_unsafe_plugin::list::Contexts;
//! use hexchat_unsafe_plugin::PluginHandle;
//!
//! fn fine(ph: &mut PluginHandle<'_>) {
//!     ph.ensure_valid_context(|mut ph| {
//!         let mut list = ph.list(&Contexts);
//!         let context = list.next().unwrap();
//!         write!(ph, "{}", context.name().unwrap());
//!         let ctx = context.context();
//!         let name = context.name().unwrap();
//!         drop(list);
//!         ph.set_context(&ctx);
//!         write!(ph, "{}", name);
//!     })
//! }
//! ```