diff --git a/test/unit/NumberFormatterTest.php b/test/unit/NumberFormatterTest.php
new file mode 100644
index 0000000..5cbe983
--- /dev/null
+++ b/test/unit/NumberFormatterTest.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Test\Unit;
+
+use Test\TestCase;
+use Web3\Formatters\NumberFormatter;
+
+class NumberFormatterTest extends TestCase
+{
+    /**
+     * formatter
+     * 
+     * @var \Web3\Formatters\NumberFormatter
+     */
+    protected $formatter;
+
+    /**
+     * setUp
+     * 
+     * @return void
+     */
+    public function setUp()
+    {
+        parent::setUp();
+        $this->formatter = new NumberFormatter;
+    }
+
+    /**
+     * testFormat
+     * 
+     * @return void
+     */
+    public function testFormat()
+    {
+        $formatter = $this->formatter;
+
+        $number= $formatter->format('123');
+        $this->assertEquals($number, 123);
+    }
+}
\ No newline at end of file