Added PHP 7.3, 7.4 and nightly to CI matrix

- added PHP 7.3, 7.4 and nightly to CI matrix
- updated phpunit config
- use null coalescing operator in `OAuthPlugin::initToken` in order to avoid precedence issues on PHP 7.4

.travis.yml

@@ -1,14 +1,23 @@
 language: php
 dist: trusty
 sudo: false
-php:
-  - 7.1
-  - 7.2
+
+matrix:
+  include:
+    - php: '7.1'
+    - php: '7.2'
+    - php: '7.3'
+    - php: '7.4'
+    - php: nightly
+      env:
+        - COMPOSER_ARGS="--no-suggest --ignore-platform-reqs"
+  allow_failures:
+    - php: nightly
 
 before_script:
   - travis_retry composer self-update
   - composer --version
-  - travis_retry composer install --no-interaction --prefer-source
+  - travis_retry composer install --no-interaction --prefer-source $COMPOSER_ARGS
 
 script:
   - mkdir -p ./build/logs

lib/Bitbucket/API/Http/Plugin/OAuthPlugin.php

@@ -204,9 +204,7 @@ protected function getSigner()
      */
     protected function initToken($token)
     {
-        return (!is_null($token)) ?
-            $token :
-            empty($this->config['oauth_token']) ?
+        return $token ?? empty($this->config['oauth_token']) ?
                 new OAuth1\Token\NullToken() :
                 new OAuth1\Token\Token($this->config['oauth_token'], $this->config['oauth_token_secret'])
             ;

phpunit.xml.dist

@@ -8,7 +8,6 @@
          convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
-         syntaxCheck="false"
 >
     <testsuites>
         <testsuite name="bitbucket-api Test Suite">
@@ -24,7 +23,7 @@
     <logging>
         <log type="tap" target="build/report.tap"/>
         <log type="junit" target="build/report.junit.xml"/>
-        <log type="coverage-html" target="build/coverage" charset="UTF-8" yui="true" highlight="true"/>
+        <log type="coverage-html" target="build/coverage"/>
         <log type="coverage-text" target="build/coverage.txt"/>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
     </logging>