Give the ability to disable min score (#298)

README.md

@@ -81,6 +81,7 @@ A sample `churn.yml` file looks like:
 filesToShow: 10
 
 # The minimum score a file need to display in the results table.
+# Disabled if null.
 # Default: 0.1
 minScoreToShow: 0
 

src/Configuration/Config.php

@@ -26,7 +26,7 @@ class Config
      */
     private function __construct(array $configuration = [])
     {
-        if (!empty($configuration)) {
+        if ([] !== $configuration) {
             (new Validator())->validateConfigurationValues($configuration);
         }
 
@@ -78,11 +78,15 @@ public function getFilesToShow(): int
     }
 
     /**
-     * Get the minimum score a file need to display.
+     * Get the minimum score a file need to display (ignored if null).
      */
-    public function getMinScoreToShow(): float
+    public function getMinScoreToShow(): ?float
     {
-        return $this->configuration['minScoreToShow'] ?? self::MINIMUM_SCORE_TO_SHOW;
+        if (\array_key_exists('minScoreToShow', $this->configuration)) {
+            return $this->configuration['minScoreToShow'];
+        }
+
+        return self::MINIMUM_SCORE_TO_SHOW;
     }
 
     /**

src/Configuration/Validator.php

@@ -53,7 +53,7 @@ private function validateFilesToShow(array $configuration): void
      */
     private function validateMinScoreToShow(array $configuration): void
     {
-        if (!\array_key_exists('minScoreToShow', $configuration)) {
+        if (!\array_key_exists('minScoreToShow', $configuration) || null === $configuration['minScoreToShow']) {
             return;
         }
 

tests/Unit/Configuration/ConfigTest.php

@@ -44,7 +44,6 @@ public function it_can_return_its_default_values_when_instantiated_without_any_p
     public function it_can_return_its_values_when_instantiated_parameters()
     {
         $filesToShow = 13;
-
         $directoriesToScan = ['src', 'tests'];
         $minScoreToShow = 5;
         $parallelJobs = 7;
@@ -73,4 +72,14 @@ public function it_can_return_its_values_when_instantiated_parameters()
         $this->assertSame($fileExtensions, $config->getFileExtensions());
         $this->assertSame($vcs, $config->getVCS());
     }
+
+    /** @test */
+    public function it_accepts_null_for_min_score_to_show()
+    {
+        $config = Config::create([
+            'minScoreToShow' => null,
+        ]);
+
+        $this->assertNull($config->getMinScoreToShow());
+    }
 }

tests/docker/fossil/churn.yml

@@ -1,3 +1,4 @@
 vcs: fossil
 directoriesToScan:
-  - /tmp/test
+  - /tmp/test
+minScoreToShow: ~