Issue squizlabs#3472

Calculate CYC for PHP 8 match() expression in Cyclomatic Complexity sniff

src/Standards/Generic/Sniffs/Metrics/CyclomaticComplexitySniff.php

@@ -71,15 +71,16 @@ public function process(File $phpcsFile, $stackPtr)
 
         // Predicate nodes for PHP.
         $find = [
-            T_CASE    => true,
-            T_DEFAULT => true,
-            T_CATCH   => true,
-            T_IF      => true,
-            T_FOR     => true,
-            T_FOREACH => true,
-            T_WHILE   => true,
-            T_DO      => true,
-            T_ELSEIF  => true,
+            T_CASE        => true,
+            T_DEFAULT     => true,
+            T_CATCH       => true,
+            T_IF          => true,
+            T_FOR         => true,
+            T_FOREACH     => true,
+            T_WHILE       => true,
+            T_DO          => true,
+            T_ELSEIF      => true,
+            T_MATCH_ARROW => true,
         ];
 
         $complexity = 1;

src/Standards/Generic/Tests/Metrics/CyclomaticComplexityUnitTest.3.inc

@@ -0,0 +1,32 @@
+<?php
+
+function complexityFiveWithMatch()
+{
+    return match(strtolower(substr($monthName, 0, 3))){
+        'apr', 'jun', 'sep',  'nov'  => 30,
+        'jan', 'mar', 'may', 'jul', 'aug',  'oct', 'dec'  => 31,
+        'feb' => is_leap($year) ? 29 : 28,
+        default => throw new InvalidArgumentException("Bogus month"),
+    }
+}
+
+function complexityFourteenWithMatch()
+{
+    return match(strtolower(substr($monthName, 0, 3))) {
+        'jan' => 31,
+        'feb' => is_leap($year) ? 29 : 28,
+        'mar' => 31,
+        'apr' => 30,
+        'may' => 31,
+        'jun' => 30,
+        'jul' => 31,
+        'aug' => 31,
+        'sep' => 30,
+        'oct' => 31,
+        'nov' => 30,
+        'dec' => 31,
+        default => throw new InvalidArgumentException("Bogus month"),
+    };
+}
+
+?>

src/Standards/Generic/Tests/Metrics/CyclomaticComplexityUnitTest.php

@@ -21,11 +21,18 @@ class CyclomaticComplexityUnitTest extends AbstractSniffUnitTest
      * The key of the array should represent the line number and the value
      * should represent the number of errors that should occur on that line.
      *
+     * @param string $testFile The name of the file being tested.
+     *
      * @return array<int, int>
      */
-    public function getErrorList()
+    public function getErrorList($testFile='')
     {
-        return [116 => 1];
+        switch ($testFile) {
+        case 'CyclomaticComplexityUnitTest.3.inc':
+            default:
+                return [];
+                break;
+        }//end switch
 
     }//end getErrorList()
 
@@ -36,14 +43,19 @@ public function getErrorList()
      * The key of the array should represent the line number and the value
      * should represent the number of warnings that should occur on that line.
      *
+     * @param string $testFile The name of the file being tested.
+     *
      * @return array<int, int>
      */
-    public function getWarningList()
+    public function getWarningList($testFile='')
     {
-        return [
-            45 => 1,
-            72 => 1,
-        ];
+        switch ($testFile) {
+        case 'CyclomaticComplexityUnitTest.3.inc':
+            return [13 => 1];
+        default:
+            return [];
+            break;
+        }//end switch
 
     }//end getWarningList()