Extra phpspec matchers

bravesheep/phpspec-extra-matchers contains several extra matchers for phpspec, they are explained below:

• ContainStringMatcher: This matcher adds containString(substr) or contain(substr) for strings. When given a substring of the subject they match.
• FalseMatcher: Adds beFalse(), equivalent to be(false).
• MaximumEqualMatcher: Adds beAtMost(number), which matches when the subject is less than or equal to the expected value (i.e. the <= operator).
• MaximumMatcher: Adds beLessThan(number), which matches when the subject is less than the expected value (i.e. the < operator).
• MinimumEqualMatcher: Adds beAtLeast(number), which matches when the subject is equal to or greater than the expected value (i.e. the >= operator').
• MinimumMatcher: Adds beMoreThan(number), matches when the subject is greater than the expected value (i.e. the > operator').
• NullMatcher: Adds beNull(), equivalent to be(null).
• TrueMatcher: Adds beTrue(), equivalent to be(true).

Additionally some matchers specific in a mink context are available:

• Mink\CookieExistanceMatcher: adds haveCookie(name), which matches for Behat\Mink\Session objects if a cookie was set in the session.
• Mink\ElementExistanceMatcher: adds matchElement(selector, locator), haveElement(selector, locator), haveMatchingElement(selector, locator) and containElement(selector, locator), and works on Behat\Mink\Element\ElementInterface instances. They match if element->has(selector, locator) returns true.
• Mink\RegexUrlMatcher: adds matchAddress(path) and matchUrl(path) which match if the regex matches the path, it works on Behat\Mink\Session subjects.
• Mink\UrlMatcher: adds haveAddress(path), haveUrl(path), beAtAddress(path) and beAtUrl(path), matches if the current url is at the indicated path. It works on Behat\Mink\Session subjects.
• Mink\StatusCodeMatcher: adds haveStatusCode(code) and matches for Behat\Mink\Session subjects on the status code.
• Mink\TextMatcher: adds containText(string) and matches for Behat\Mink\Element\ElementInterface subjects if their text contains the expected string.