insist

Insist is a framework for enforcing value invariants using a fluent API and hamcrest matchers.

import static io.github.jabau.insist.Insistence.insist;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.Matchers.notNullValue;

class Example {
    final String name;

    Example(String name) {
        this.name = insist("name", name)
                        .is(notNullValue())
                        .value();
    }

    Integer squareIfInteger(Object x) {
        insist(x).is(notNullValue()).is(instanceOf(Integer.class));
        final Integer i = (Integer) x;
        return i*i;
    }
}

Requirements

For building the library you need:

• JDK 1.8
• Maven 3

Building and installing the library locally

mvn install

Changelog

See the CHANGELOG file.

Copyright

Released under the MIT License. See the LICENSE file.