Universal/DisallowInlineTabs: add extra tests + fix test tab handling

* Add a space-based test case file which shouldn't yield any errors or warnings at all.
* Make sure that the "tabwidth" set for test files is correctly respected.
* Fix the `DisallowInlineTabsUnitTest.5.inc` fixed file.

Universal/Sniffs/WhiteSpace/DisallowInlineTabsSniff.php

@@ -94,6 +94,10 @@ public function process(File $phpcsFile, $stackPtr)
             $this->tabWidth = Helper::getTabWidth($phpcsFile);
         }
 
+        if (defined('PHP_CODESNIFFER_IN_TESTS')) {
+            $this->tabWidth = Helper::getCommandLineData($phpcsFile, 'tabWidth');
+        }
+
         $tokens = $phpcsFile->getTokens();
         $dummy  = new DummyTokenizer('', $phpcsFile->config);
 
@@ -115,7 +119,7 @@ public function process(File $phpcsFile, $stackPtr)
                     continue;
                 }
 
-                $dummy->replaceTabsInToken($token, ' ', ' ', $this->tabWidth);
+                $dummy->replaceTabsInToken($token);
             }
 
             $origContent = $token['orig_content'];

Universal/Tests/WhiteSpace/DisallowInlineTabsUnitTest.5.inc.fixed

@@ -1,35 +1,35 @@
 <?php
 /* *** TESTING WITHOUT A TAB WIDTH SET *** */
 /**
- * @param int    $var    Description - Bad: alignment using tabs.
+ * @param int  $var  Description - Bad: alignment using tabs.
  * @param string $string Another description.
  */
 
 			$expected = ( $column - 1 );
-			$found     = ( $this->tokens[ $closer ]['column'] - 1 ); // Bad.
-			$error     = 'Array closer not aligned correctly; expected %s space(s) but found %s'; // Bad.
-			$data      = array( // Bad.
+			$found   = ( $this->tokens[ $closer ]['column'] - 1 ); // Bad.
+			$error   = 'Array closer not aligned correctly; expected %s space(s) but found %s'; // Bad.
+			$data   = array( // Bad.
 				$expected_value => 'data',
-				$found          => 'more_data', // Bad.
+				$found   => 'more_data', // Bad.
 			);
 
 /*
  * Test that the tab replacements do not negatively influence existing mid-line alignments.
  */
-$a        = true;
-$aa       = true;
-$aaa      = true;
-$aaaa     = true;
-$aaaaa    = true;
+$a    = true;
+$aa    = true;
+$aaa   = true;
+$aaaa   = true;
+$aaaaa   = true;
 $aaaaaa   = true;
 $aaaaaaa  = true;
 $aaaaaaaa = true;
 
-// Test tab replacement in  inline comments.
+// Test tab replacement in inline comments.
 
 		/*
-		 * Tab indented     and inline tabs.
+		 * Tab indented  and inline tabs.
 		 */
 
-		// Tab indented       and inline tabs.
-		// Tab indented       and inline tabs.
+		// Tab indented  and inline tabs.
+		// Tab indented  and inline tabs.

Universal/Tests/WhiteSpace/DisallowInlineTabsUnitTest.6.inc

@@ -0,0 +1,43 @@
+<?php
+
+/* *** SPACE BASED FILE - NO ERRORS OR WARNINGS EXPECTED AT ALL *** */
+
+/**
+ * @param int    $var    Description.
+ * @param string $string Another description.
+ */
+
+            $expected = ( $column - 1 );
+            $found    = ( $this->tokens[ $closer ]['column'] - 1 );
+            $error    = 'Array closer not aligned correctly; expected %s space(s) but found %s';
+            $data     = array(
+                $expected_value => 'data',
+                $found          => 'more_data',
+            );
+
+/**
+ * @param int    $var    Description
+ * @param string $string Another description.
+ */
+
+            $expected = ( $column - 1 );
+            $found    = ( $this->tokens[ $closer ]['column'] - 1 );
+            $error    = 'Array closer not aligned correctly; expected %s space(s) but found %s';
+            $data     = array(
+                $expected_value => 'data',
+                $found          => 'more_data',
+            );
+
+$a        = true;
+$aa       = true;
+$aaa      = true;
+$aaaa     = true;
+$aaaaa    = true;
+$aaaaaa   = true;
+$aaaaaaa  = true;
+$aaaaaaaa = true;
+
+    /**
+     * @param   int     $var    Description.
+     * @param   string  $string Another description.
+     */

Universal/Tests/WhiteSpace/DisallowInlineTabsUnitTest.php

@@ -55,8 +55,8 @@ public function setCliValues($testFile, $config)
             return;
         }
 
-        if ($testFile === 'DisallowInlineTabsUnitTest.5.inc') {
-            // Set to the default.
+        if ($testFile === 'DisallowInlineTabsUnitTest.5.inc' || $testFile === 'DisallowInlineTabsUnitTest.6.inc') {
+            // Set to the default (results in tab width 1).
             $config->tabWidth = 0;
             return;
         }