IHF: format_bytes fully covered.

Author: dmitry-ivanov

tests/format/FormatBytesTest.php

@@ -0,0 +1,58 @@
+<?php
+
+class FormatBytesTest extends TestCase
+{
+    /** @test */
+    public function it_returns_zero_for_negative_bytes()
+    {
+        $this->assertEquals('0 B', format_bytes(-100));
+    }
+
+    /** @test */
+    public function it_works_with_bytes()
+    {
+        $this->assertEquals('450 B', format_bytes(450));
+    }
+
+    /** @test */
+    public function it_works_with_kilobytes()
+    {
+        $this->assertEquals('3.68 KB', format_bytes(3768));
+    }
+
+    /** @test */
+    public function it_works_with_megabytes()
+    {
+        $this->assertEquals('15.04 MB', format_bytes(15768749));
+    }
+
+    /** @test */
+    public function it_works_with_gigabytes()
+    {
+        $this->assertEquals('6.91 GB', format_bytes(7415768749));
+    }
+
+    /** @test */
+    public function it_works_with_terabytes()
+    {
+        $this->assertEquals('8.31 TB', format_bytes(9137415768749));
+    }
+
+    /** @test */
+    public function terabytes_is_the_greatest_unit()
+    {
+        $this->assertEquals('6702.19 TB', format_bytes(7369137415768749));
+    }
+
+    /** @test */
+    public function it_works_with_zero_precision()
+    {
+        $this->assertEquals('703 MB', format_bytes(736968749, 0));
+    }
+
+    /** @test */
+    public function it_works_with_custom_precision()
+    {
+        $this->assertEquals('80.121 MB', format_bytes(84012659, 3));
+    }
+}