diff --git a/src/Formatter.php b/src/Formatter.php
index f5c973c..e83b5b0 100644
--- a/src/Formatter.php
+++ b/src/Formatter.php
@@ -5,14 +5,14 @@ namespace LanguageServer;
 
 use LanguageServer\Protocol\{TextEdit, Range, Position, ErrorCode};
 use AdvancedJsonRpc\ResponseError;
+use PHP_CodeSniffer;
 
 class Formatter
 {
-
     /**
      *
-     * @param string $content            
-     * @param string $uri            
+     * @param string $content
+     * @param string $uri
      *
      * @return \LanguageServer\Protocol\TextEdit[]
      * @throws \AdvancedJsonRpc\ResponseError
@@ -20,14 +20,14 @@ class Formatter
     public function format(string $content, string $uri)
     {
         $path = uriToPath($uri);
-        $cs = new \PHP_CodeSniffer();
+        $cs = new PHP_CodeSniffer();
         $cs->initStandard($this->findConfiguration($path));
         $file = $cs->processFile(null, $content);
         $fixed = $file->fixer->fixFile();
         if (!$fixed && $file->getErrorCount() > 0) {
             throw new ResponseError('Unable to format file', ErrorCode::INTERNAL_ERROR);
         }
-        
+
         $new = $file->fixer->getContents();
         if ($content === $new) {
             return [];
@@ -42,34 +42,34 @@ class Formatter
     private function calculateEndPosition(string $content): Position
     {
         $lines = explode("\n", $content);
-        return new Position(sizeof($lines) - 1, strlen(end($lines)));
+        return new Position(count($lines) - 1, strlen(end($lines)));
     }
-    
+
     /**
      *
-     * @param string $uri            
+     * @param string $path
      * @return string[]
      */
-    private function findConfiguration(string $uri)
+    private function findConfiguration(string $path)
     {
-        $currentDir = dirname($uri);
+        $currentDir = dirname($path);
         do {
             $default = $currentDir . DIRECTORY_SEPARATOR . 'phpcs.xml';
-            if (is_file($default) === true) {
+            if (is_file($default)) {
                 return [$default];
             }
-            
+
             $default = $currentDir . DIRECTORY_SEPARATOR . 'phpcs.xml.dist';
-            if (is_file($default) === true) {
+            if (is_file($default)) {
                 return [$default];
             }
-            
+
             $lastDir = $currentDir;
             $currentDir = dirname($currentDir);
         } while ($currentDir !== '.' && $currentDir !== $lastDir);
-        
-        $standard = \PHP_CodeSniffer::getConfigData('default_standard') ?? 'PSR2';
+
+        $standard = PHP_CodeSniffer::getConfigData('default_standard') ?? 'PSR2';
         return explode(',', $standard);
     }
-    
+
 }
diff --git a/tests/FormatterTest.php b/tests/FormatterTest.php
index c6af09a..6f19bcb 100644
--- a/tests/FormatterTest.php
+++ b/tests/FormatterTest.php
@@ -12,21 +12,20 @@ class FormatterTest extends TestCase
     public function testFormat()
     {
         $formatter = new Formatter();
-        
+
         $input = file_get_contents(__DIR__ . '/../fixtures/format.php');
         $output = file_get_contents(__DIR__ . '/../fixtures/format_expected.php');
-        
+
         $edits = $formatter->format($input, 'whatever');
-        $this->assertTrue($edits[0]->newText === $output);
+        $this->assertSame($output, $edits[0]->newText);
     }
 
     public function testFormatNoChange()
     {
         $formatter = new Formatter();
         $expected = file_get_contents(__DIR__ . '/../fixtures/format_expected.php');
-        
-        $edits = $formatter->format($expected, 'whatever');
-        $this->assertTrue($edits == []);
-    }
 
-}
\ No newline at end of file
+        $edits = $formatter->format($expected, 'whatever');
+        $this->assertSame([], $edits);
+    }
+}
diff --git a/tests/Utils/FileUriTest.php b/tests/Utils/FileUriTest.php
index 3a54301..0a077a2 100644
--- a/tests/Utils/FileUriTest.php
+++ b/tests/Utils/FileUriTest.php
@@ -4,50 +4,51 @@ declare(strict_types = 1);
 namespace LanguageServer\Tests\Utils;
 
 use PHPUnit\Framework\TestCase;
+use function LanguageServer\{pathToUri, uriToPath};
 
 class FileUriTest extends TestCase
 {
     public function testPathToUri()
     {
-        $uri = \LanguageServer\pathToUri('var/log');
+        $uri = pathToUri('var/log');
         $this->assertEquals('file:///var/log', $uri);
 
-        $uri = \LanguageServer\pathToUri('/usr/local/bin');
+        $uri = pathToUri('/usr/local/bin');
         $this->assertEquals('file:///usr/local/bin', $uri);
 
-        $uri = \LanguageServer\pathToUri('a/b/c/test.txt');
+        $uri = pathToUri('a/b/c/test.txt');
         $this->assertEquals('file:///a/b/c/test.txt', $uri);
 
-        $uri = \LanguageServer\pathToUri('/d/e/f');
+        $uri = pathToUri('/d/e/f');
         $this->assertEquals('file:///d/e/f', $uri);
 
         // special chars are escaped
-        $uri = \LanguageServer\pathToUri('c:/path/to/file/dürüm döner.php');
+        $uri = pathToUri('c:/path/to/file/dürüm döner.php');
         $this->assertEquals('file:///c%3A/path/to/file/d%C3%BCr%C3%BCm+d%C3%B6ner.php', $uri);
 
         //backslashes are transformed
-        $uri = \LanguageServer\pathToUri('c:\\foo\\bar.baz');
+        $uri = pathToUri('c:\\foo\\bar.baz');
         $this->assertEquals('file:///c%3A/foo/bar.baz', $uri);
     }
 
     public function testUriToPath()
     {
         $uri = 'file:///var/log';
-        $this->assertEquals('/var/log', \LanguageServer\uriToPath($uri));
+        $this->assertEquals('/var/log', uriToPath($uri));
 
         $uri = 'file:///usr/local/bin';
-        $this->assertEquals('/usr/local/bin', \LanguageServer\uriToPath($uri));
+        $this->assertEquals('/usr/local/bin', uriToPath($uri));
 
         $uri = 'file:///a/b/c/test.txt';
-        $this->assertEquals('/a/b/c/test.txt', \LanguageServer\uriToPath($uri));
+        $this->assertEquals('/a/b/c/test.txt', uriToPath($uri));
 
         $uri = 'file:///d/e/f';
-        $this->assertEquals('/d/e/f', \LanguageServer\uriToPath($uri));
+        $this->assertEquals('/d/e/f', uriToPath($uri));
 
         $uri = 'file:///c:/path/to/file/d%C3%BCr%C3%BCm+d%C3%B6ner.php';
-        $this->assertEquals('c:\\path\\to\\file\\dürüm döner.php', \LanguageServer\uriToPath($uri));
+        $this->assertEquals('c:\\path\\to\\file\\dürüm döner.php', uriToPath($uri));
 
         $uri = 'file:///c:/foo/bar.baz';
-        $this->assertEquals('c:\\foo\\bar.baz', \LanguageServer\uriToPath($uri));
+        $this->assertEquals('c:\\foo\\bar.baz', uriToPath($uri));
     }
 }