phpmetrics - allow adding composer files when composer.json isn't inside analyzed dirs

#123

Author: zdenekdrahos

.phpqa.yml

@@ -34,6 +34,7 @@ phpmetrics:
     # v2
     git: false
     # junit: build/log-junit.xml
+    # composer: composer.json
 
 phpstan:
     level: 0

README.md

@@ -228,6 +228,7 @@ Tool | Settings | Default Value | Your value
 [phpmetrics.config](https://github.com/EdgedesignCZ/phpqa/issues/74) | Configuration for phpmetrics v1  | `null` | Path to `.phpmetrics.yml` file
 [phpmetrics.git](https://github.com/EdgedesignCZ/phpqa/pull/122) | phpmetrics v2 analyses based on Git History   | `null` | Boolean value or path to git binary
 [phpmetrics.junit](https://github.com/EdgedesignCZ/phpqa/pull/125) | phpmetrics v2 evaluates metrics according to JUnit logs | `null` | Path to JUnit xml
+[phpmetrics.composer](https://github.com/EdgedesignCZ/phpqa/pull/123) | phpmetrics v2 analyzes composer dependencies | `null` | Path to composer.json when the file is not included in `analyzedDirs`
 [phpmd](http://phpmd.org/documentation/creating-a-ruleset.html) | Ruleset | [Edgedesign's standard](/app/phpmd.xml) | Path to ruleset
 [phpcpd](https://github.com/sebastianbergmann/phpcpd/blob/de9056615da6c1230f3294384055fa7d722c38fa/src/CLI/Command.php#L136) | Minimum number of lines/tokens for copy-paste detection | 5 lines, 70 tokens |
 [phpstan](https://github.com/phpstan/phpstan#configuration) | Level, config file | Level 0, `%currentWorkingDirectory%/phpstan.neon` | Take a look at [phpqa config in tests/.travis](/tests/.travis/) |

src/Tools/Analyzer/PhpMetricsV2.php

@@ -31,7 +31,12 @@ public function __invoke()
             $args['junit'] = $junit;
         }
 
-        $args[] = $this->options->getAnalyzedDirs(',');
+        $analyzedDirs = $this->options->getAnalyzedDirs(',');
+        $composer = $this->config->path('phpmetrics.composer');
+        if ($composer) {
+            $analyzedDirs .= ",{$composer}," . str_replace('composer.json', 'composer.lock', $composer);
+        }
+        $args[] = $analyzedDirs;
         return $args;
     }
 }

tests/Config/ConfigTest.php

@@ -31,6 +31,7 @@ public function testLoadDefaultConfig()
         assertThat($config->value('psalm.showInfo'), identicalTo(true));
         assertThat($config->value('phpmetrics.config'), is(nullValue()));
         assertThat($config->value('phpmetrics.junit'), is(nullValue()));
+        assertThat($config->value('phpmetrics.composer'), is(nullValue()));
         assertThat($config->value('phpmetrics.git'), identicalTo(false));
     }