#[macro_use]
extern crate must;
extern crate log;

use log::{LogLevelFilter, LogMetadata, LogRecord, SetLoggerError};
use must::prelude::*;

struct SimpleLogger;

impl log::Log for SimpleLogger {
	fn enabled(&self, _metadata: &LogMetadata) -> bool {
		true
	}

	fn log(&self, record: &LogRecord) {
		if self.enabled(record.metadata()) {
			println!("{} - {} - {}",
			         record.level(),
			         record.metadata().target(),
			         record.args());
		}
	}
}

fn init_log() -> Result<(), SetLoggerError> {
	log::set_logger(|max_log_level| {
		max_log_level.set(LogLevelFilter::Trace);
		Box::new(SimpleLogger)
	})
}

#[test]
#[should_panic(expected = "\"1\" must be 2")]
fn test_on_drop() {
	let _ = init_log();

	1.must_eq(2);
}

#[test]
#[should_panic(expected = "\"Some(5)\" must be Some(6)")]
fn test_only_once_when_or_called() {
	let _ = init_log();

	Some(5).must_eq(Some(6)).or(fail!());
}