Use dedicated PHPUnit assertions (#4950)

Author: carusogabriel

src/Codeception/Module/REST.php

@@ -241,7 +241,7 @@ public function dontSeeHttpHeader($name, $value = null)
     public function seeHttpHeaderOnce($name)
     {
         $headers = $this->getRunningClient()->getInternalResponse()->getHeader($name, false);
-        $this->assertEquals(1, count($headers));
+        $this->assertCount(1, $headers);
     }
 
     /**

tests/unit/Codeception/Util/JsonArrayTest.php

@@ -36,9 +36,9 @@ public function testXmlArrayConversion2()
 
     public function testXPathLocation()
     {
-        $this->assertTrue($this->jsonArray->filterByXPath('//ticket/title')->length > 0);
-        $this->assertTrue($this->jsonArray->filterByXPath('//ticket/user/name')->length > 0);
-        $this->assertTrue($this->jsonArray->filterByXPath('//user/name')->length > 0);
+        $this->assertGreaterThan(0, $this->jsonArray->filterByXPath('//ticket/title')->length);
+        $this->assertGreaterThan(0, $this->jsonArray->filterByXPath('//ticket/user/name')->length);
+        $this->assertGreaterThan(0, $this->jsonArray->filterByXPath('//user/name')->length);
     }
 
     public function testJsonPathLocation()