use hamcrest2::prelude::*;

assert_that!(1, eq(1)); // also equal_to() assert_that!(1, not(eq(2)));

assert_that!(1, lt(2)); // also less_than() assert_that!(1, leq(1)); // also less_than_or_equal_to() assert_that!(2, gt(1)); // also greater_than() assert_that!(2, geq(2)); // also greater_than_or_equal_to()

assert_that!(123usize, type_of::<usize>()); assert_that!("test", type_of::<&str>());

assert_that!("1234", matches_regex(r"\d")); assert_that!("abc", does_not(match_regex(r"\d")));

assert_that!(1e-40f32, close_to(0.0, 0.01)); assert_that!(1e-40f32, not(close_to(0.0, 0.000001)));

let path = Path::new("./README.md"); assert_that!(path, path_exists()); assert_that!(path, file_exists()); assert_that!(path, not(dir_exists()));

let var: Option<i8> = Some(5); assert_that!(var, has(5)); let var: Result<i8, String> = Ok(5); assert_that!(var, has(5));

let var: Result<i8, String> = Ok(5); assert_that!(var, ok()); assert_that!(&var, ok()); assert_that!(Ok(5), ok::<i8, String>()); assert_that!(&Ok(5), ok::<i8, String>()); let var: Result<i8, String> = Err("bad!".to_string()); assert_that!(var, not(ok())); assert_that!(&var, not(ok()));

let var: Result<i8, String> = Err("bad!".to_string()); assert_that!(var, err()); assert_that!(&var, err()); assert_that!(Err("bad!".to_string()), err::<i8, String>()); assert_that!(&Err("bad!".to_string()), err::<i8, String>()); let var: Result<i8, String> = Ok(5); assert_that!(var, not(err())); assert_that!(&var, not(err()));

let var: Option<i8> = Some(5); assert_that!(var, some()); assert_that!(&var, some()); assert_that!(Some(1), some::<u8>()); assert_that!(&Some(1), some::<u8>()); let var: Option<i8> = None; assert_that!(var, not(some())); assert_that!(&var, not(some()));

let var: Option<i8> = None; assert_that!(var, none()); assert_that!(&var, none()); assert_that!(None, none::<u8>()); assert_that!(&None, none::<u8>()); assert_that!(Some(1), not(none::<u8>())); assert_that!(&Some(1), not(none::<u8>()));

assert_that!(&vec!(1, 2, 3), contains(vec!(1, 2))); assert_that!(&vec!(1, 2, 3), contains(1)); assert_that!(&vec!(1, 2, 3), not(contains(4i))); assert_that!(&vec!(1, 2, 3), contains(vec!(1, 2, 3)).exactly()); assert_that!(&vec!(1, 2, 3), not(contains(vec!(1, 2)).exactly())); assert_that!(&vec!(1, 2, 3), contains(vec!(1, 2)).in_order()); assert_that!(&vec!(1, 2, 3), not(contains(vec!(1, 3)).in_order()));

assert_that!(&vec!(1, 2, 3), len(3)); assert_that!(&vec!(1, 2, 3), not(len(4)));

assert_that!(&Vec::<i32>::new(), empty()); assert_that!(&vec![1, 2, 3], not(empty()));

assert_that!(4, all!(lt(5), gt(3))); // also and!() assert_that!( &vec![1, 2, 3], all!(contains(vec![1, 2]), not(contains(vec![4]))) );

assert_that!(4, any!(less_than(2), greater_than(3))); // also or!() assert_that!( &vec![1, 2, 3], any!(contains(vec![1, 2, 5]), not(contains(vec![4]))) );

assert_that!(true, is(true)); assert_that!(false, is(false));

assert_that!(42, anything()); assert_that!("test", is(anything()));