assert_let 0.1.0

assert_let macro for tests.
Documentation 
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#[macro_export]
macro_rules! assert_let {
    ($lhs:pat = $rhs:expr) => {
        if let $lhs = $rhs {} else { panic!("assertion failed: `(if let left == right)`
  left: {0},
 right: {1:?}", quote!($lhs), $rhs) }
    };
    //($lhs:pat = $rhs:expr, $stmt:stmt) => {
        //if let $lhs = $rhs { $stmt } else { panic!() }
    //};
    ($lhs:pat = $rhs:expr, $code:block) => {
        if let $lhs = $rhs $code else { panic!("assertion failed: `(if let left == right)`
  left: {0},
 right: {1:?}", quote!($lhs), $rhs) }
    };
}