easy-assert crate, which will help you to create better tests

Add dependency to your Cargo.toml [dev-dependencies] assert-that = "0.2.1"

Example: NumericAssert::assert_that(actual(-1)).is_equal().to(expected(-1));

If you need custom description, or you can't implement Display trait) StringAssert::assert_that(actual_with(value, description_fucntion)) .length() .is(expected_with(5, description_fucntion));

If you need custom match:

CustomAssert::assert_that(actual(val1)) .matches_by(|a, b| a.eq(b)) .to(expected(val2));

Available assertions: NumericAssert -> is_equal, is_not_equal, is_less, is_less_or_equal, is_greater, is_greater_or_equal

StringAssert -> is_equal, is_not_equal, length, contains

BooleanAssert -> is_true, is_false

OptionAssert -> is_none, is_some, contains for now only with custom assertion or with list assertion

``` ListAssert -> length; withelementmatcher -> isequalto -> inanyorder; inorder; contains -> inanyorder; inexactorder; - [A,B,C,A,D].contains([B,C]).inexactorder() = true/[A,B,C,A,D].contains([B,D]).inexactorder() = false justinorder; - [A,B,C,A,D].contains([B,C]).inexactorder() = true/[A,B,C,A,D].contains([B,D]).inexactorder() = true isnotequalto -> inanyorder; - At least one element should be different inorder; - All elements can be same, but order different doesnotcontain -> all(); - All elements from expected should be missed in actual atleast_one(); - At least one element from expected should be missed in actual

`` CustomAssert -> matches_by`

It is open source, feel free to submit merge requests or propose improvements.