Multiple conjunctions and assertions can be chained together, allowing developers to write multiple assertions about one subject very easily. For example:

    ->and()->will()->contain('my value');

The above performs three separate assertions against $value in sequence, without having to redeclare our subject, and does so in a concise, easy to read syntax.

You can switch between positive and negative assertions on the fly; the condition will apply to whatever assertions follow it. For example:

verify($value)->will()->contain('value 1')
    ->and()->contain('value 2')
    ->and()->doesNot()->contain('value c')
    ->and()->doesNot()->contain('value d');

The above snippet will assert that $value contains 'value 1' and 'value 2', and does not contain 'value c' or 'value d'. It is worth noting that BeBat/Verify requires just a single positive or negative conjunction; any additional conjunction that does not change the assertion condition is optional. So the previous example could be simplified to:

verify($value)->will()->contain('value 1')->contain('value 2')
    ->doesNot()->contain('value c')->contain('value d');

Additional conjunctions are only required if you are changing to a positive or negative condition for the following assertion(s), or if you wish to add a descriptive message to the assertion:

verify($starsArray, 'Famous People')->will('have a Beatle')->contain('Ringo')
    ->will('have a cartoon')->contain('Bugs Bunny')
    ->willNot('have a pirate')->contain('Stede Bonnet');