Fix: make PatchBuilder->changeToken() case sensitive

Author: david0

src/main/QafooLabs/Refactoring/Adapters/PatchBuilder/PatchBuilder.php

@@ -73,7 +73,7 @@ public function changeToken($originalLine, $oldToken, $newToken)
         $newLine = $this->buffer->getLine($this->createLineNumber($originalLine));
 
         $newLine = preg_replace(
-            '!(^|[^a-z0-9])(' . preg_quote($oldToken) . ')([^a-z0-9]|$)!i',
+            '!(^|[^a-z0-9])(' . preg_quote($oldToken) . ')([^a-z0-9]|$)!',
             '\1' . $newToken . '\3',
             $newLine
         );

src/test/QafooLabs/Refactoring/Adapters/PatchBuilder/PatchBuilderTest.php

@@ -41,6 +41,22 @@ public function testChangeTokenOnLineAlone()
  line6
  line7
 
+DIFF;
+
+        $this->assertEquals($expected, $this->builder->generateUnifiedDiff());
+    }
+
+    public function testChangeIsCaseSensitive() {
+        $this->builder = new PatchBuilder('$bar = new Bar();');
+        $this->builder->changeToken(1, 'Bar', 'Foo');
+
+        $expected = <<<DIFF
+--- a/
++++ b/
+@@ -1,1 +1,1 @@
+-\$bar = new Bar();
++\$bar = new Foo();
+
 DIFF;
         $this->assertEquals($expected, $this->builder->generateUnifiedDiff());
     }