diff --git a/.styleci.yml b/.styleci.yml
index 2ed9dee..6668a88 100644
--- a/.styleci.yml
+++ b/.styleci.yml
@@ -2,8 +2,6 @@ preset: PSR2
 
 risky: false
 
-linting: true
-
 enabled:
     - no_extra_consecutive_blank_lines
     - no_unused_imports
diff --git a/.travis.yml b/.travis.yml
index bf62dc6..f36ed72 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,11 @@ php:
   - 7.0
   - 7.1
   - 7.2
+  - nightly
+
+matrix:
+  allow_failures:
+    - php: nightly
 
 before_script:
   - "composer self-update"
diff --git a/tests/Console/Commands/GenerateState/ReaderDatasetTest.php b/tests/Console/Commands/GenerateState/ReaderDatasetTest.php
index 1b10b3c..3e1bd43 100644
--- a/tests/Console/Commands/GenerateState/ReaderDatasetTest.php
+++ b/tests/Console/Commands/GenerateState/ReaderDatasetTest.php
@@ -14,4 +14,24 @@ public function testShouldReadDatasetFile()
 
         $this->assertCount(27, $reader);
     }
+
+    public function testConstructorOnNullFilePath()
+    {
+        $reader = new ReaderDataset(null);
+        $reader->read();
+
+        $this->assertCount(27, $reader);
+    }
+
+    public function testGetCurrentStates()
+    {
+        $reader = new ReaderDataset(null);
+        $reader->read();
+        $result = $reader->current();
+
+        $this->assertSame('EstadoDo', $result->getClassName());
+        $this->assertSame('Estado do', $result->getFullName());
+        $this->assertSame('AC', $result->getShortName());
+        $this->assertSame('State', $result->getTimeZone());
+    }
 }
diff --git a/tests/StateTest.php b/tests/StateTest.php
index d55136b..e41d9c5 100644
--- a/tests/StateTest.php
+++ b/tests/StateTest.php
@@ -20,6 +20,7 @@ public function testShouldCreateAStateObject($method, $className, $fullName, $sh
         $this->assertEquals($shortName, $state->shortName, "Failed asserting short for {$fullName}");
         $this->assertEquals($code, $state->code, "Failed asserting code for {$fullName}");
         $this->assertEquals($timezone, $state->timeZone, "Failed asserting timezone for {$fullName}");
+        $this->assertTrue($state->equalTo($state));
     }
 
     public function provideStates()