Add Scrutinizer-CI to the build pipeline

.scrutinizer.yml

@@ -0,0 +1,24 @@
+build:
+    environment:
+        php:
+            version: 7.1
+
+before_commands:
+    - "composer install --no-dev --prefer-source"
+
+tools:
+    external_code_coverage:
+        timeout: 3600
+
+filter:
+    excluded_paths:
+        - docs
+        - tools
+
+build_failure_conditions:
+    - 'elements.rating(<= C).new.exists'                        # No new classes/methods with a rating of C or worse allowed
+    - 'issues.label("coding-style").new.exists'                 # No new coding style issues allowed
+    - 'issues.severity(>= MAJOR).new.exists'                    # New issues of major or higher severity
+    - 'project.metric_change("scrutinizer.test_coverage", < 0)' # Code Coverage decreased from previous inspection
+    - 'patches.label("Doc Comments").new.exists'                # No new doc comments patches allowed
+    - 'patches.label("Unused Use Statements").new.exists'       # No new unused imports patches allowed

.travis.coverage.sh

@@ -0,0 +1,5 @@
+set -x
+if [ "$TRAVIS_PHP_VERSION" = '7.1' ] ; then
+    wget https://scrutinizer-ci.com/ocular.phar
+    php ocular.phar code-coverage:upload --format=php-clover ./clover.xml
+fi

.travis.yml

@@ -112,6 +112,9 @@ matrix:
   allow_failures:
     - php: nightly
 
+after_script:
+  - sh .travis.coverage.sh
+
 install:
   - travis_retry composer install
 

README.md

@@ -3,6 +3,7 @@
 | [Master][Master] | [2.5][2.5] |
 |:----------------:|:----------:|
 | [![Build status][Master image]][Master] | [![Build status][2.5 image]][2.5] |
+| [![Code Coverage](https://scrutinizer-ci.com/g/doctrine/dbal/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/doctrine/dbal/?branch=master) | [![Code Coverage](https://scrutinizer-ci.com/g/doctrine/dbal/badges/coverage.png?b=2.5)](https://scrutinizer-ci.com/g/doctrine/dbal/?branch=2.5) |
 
 
 Powerful database abstraction layer with many features for database schema introspection, schema management and PDO abstraction.