fix use class keyword

Author: nyamsprod

test/CsvTest.php

@@ -2,6 +2,9 @@
 
 namespace League\Csv\Test;
 
+use DOMDocument;
+use IteratorAggregate;
+use JsonSerializable;
 use League\Csv\Reader;
 use SplTempFileObject;
 
@@ -34,8 +37,8 @@ public function tearDown()
 
     public function testInterface()
     {
-        $this->assertInstanceOf('IteratorAggregate', $this->csv);
-        $this->assertInstanceOf('JsonSerializable', $this->csv);
+        $this->assertInstanceOf(IteratorAggregate::class, $this->csv);
+        $this->assertInstanceOf(JsonSerializable::class, $this->csv);
     }
 
     public function testToHTML()
@@ -45,7 +48,7 @@ public function testToHTML()
 
     public function testToXML()
     {
-        $this->assertInstanceOf('DOMDocument', $this->csv->toXML());
+        $this->assertInstanceOf(DOMDocument::class, $this->csv->toXML());
     }
 
     public function testJsonSerialize()

test/FactoryTest.php

@@ -55,22 +55,22 @@ public function testCreateFromString()
         $expected = 'john,doe,[email protected]'.PHP_EOL
             .'jane,doe,[email protected]'.PHP_EOL;
         $reader = Reader::createFromString($expected);
-        $this->assertInstanceof('League\Csv\Reader', $reader);
+        $this->assertInstanceof(Reader::class, $reader);
     }
 
     public function testCreateFromFileObject()
     {
         $reader = Reader::createFromFileObject(new SplTempFileObject());
-        $this->assertInstanceof('League\Csv\Reader', $reader);
-        $this->assertInstanceof('SplTempFileObject', $reader->getIterator());
+        $this->assertInstanceof(Reader::class, $reader);
+        $this->assertInstanceof(SplTempFileObject::class, $reader->getIterator());
     }
 
     public function testCreateFromFileObjectWithSplFileObject()
     {
         $path   = __DIR__.'/data/foo.csv';
         $obj    = new SplFileObject($path);
         $reader = Reader::createFromFileObject($obj);
-        $this->assertInstanceof('League\Csv\Reader', $reader);
-        $this->assertInstanceof('SplFileObject', $reader->getIterator());
+        $this->assertInstanceof(Reader::class, $reader);
+        $this->assertInstanceof(SplFileObject::class, $reader->getIterator());
     }
 }

test/ReaderTest.php

@@ -2,6 +2,7 @@
 
 namespace League\Csv\Test;
 
+use Iterator;
 use League\Csv\Reader;
 use League\Csv\Writer;
 use SplTempFileObject;
@@ -526,11 +527,11 @@ public function testFetchPairsWithInvalidValue()
 
     public function testReturnTypeResetBetweenCallToArrayWithFetch()
     {
-        $this->assertInstanceof('\Iterator', $this->csv->fetch());
+        $this->assertInstanceof(Iterator::class, $this->csv->fetch());
         $this->assertInternalType('array', $this->csv->fetchAll());
         $this->assertInternalType('array', $this->csv->fetchOne());
-        $this->assertInstanceof('\Iterator', $this->csv->fetchAssoc());
-        $this->assertInstanceof('\Iterator', $this->csv->fetchPairs());
+        $this->assertInstanceof(Iterator::class, $this->csv->fetchAssoc());
+        $this->assertInstanceof(Iterator::class, $this->csv->fetchPairs());
         $this->assertInternalType('array', $this->csv->fetchPairsWithoutDuplicates());
     }
 

test/WriterTest.php

@@ -6,6 +6,7 @@
 use League\Csv\Writer;
 use SplFileObject;
 use SplTempFileObject;
+use stdClass;
 
 /**
  * @group writer
@@ -61,7 +62,7 @@ public function testInsertNormalFile()
      */
     public function testFailedSaveWithWrongType()
     {
-        $this->csv->insertAll(new \StdClass());
+        $this->csv->insertAll(new stdClass());
     }
 
     /**