Missing typehints and incorrect usage description #13
Description
The usage description reads:
assertMessageBodyMatches($message, $constraint) / bodyMatches($constraint)
Asserts that the message body matches the constraint $constraint. If $constraint is a primitive value, the assertion will pass when the message body is equal to the constraint. If $constraint is an instance of the PHPUnit\Framework\Constraint\Constraint class, the constraint will be evaluated as-is.
The trait definition has no type declaration for the $constraint parameter (https://github.com/martin-helmich/phpunit-psr7-assert/blob/master/src/Psr7Assertions.php#L41), however if I pass anything other than a PHPUnit Constraint object, I get a fatal error because the inner call static::bodyMatches($constraint) calls a function that requires a Constraint object.
The same is true for the function definition (https://github.com/martin-helmich/phpunit-psr7-assert/blob/master/src/Functions.php#L91) which passes the parameter straight to the constructor of Constraint\BodyMatchesConstraint, which requires the same object type and does not allow a primitive value.
The problem seems to be spread out over more than this example, but this was the one I stepped on right now.
The easy fix would be to add the type declaration - however passing a primitive value is much more useful.