From 2a76cbb402b5f65bc28305eaf053abfe830064c0 Mon Sep 17 00:00:00 2001
From: Arkadiusz Kondas <arkadiusz.kondas@gmail.com>
Date: Sun, 24 Jul 2016 13:42:50 +0200
Subject: [PATCH] add .coverage to git ignore

---
 .gitignore                                   |  1 +
 tests/Phpml/Preprocessing/NormalizerTest.php | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/.gitignore b/.gitignore
index 73854f2..8a409f4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /vendor/
 humbuglog.*
 /bin/phpunit
+.coverage
diff --git a/tests/Phpml/Preprocessing/NormalizerTest.php b/tests/Phpml/Preprocessing/NormalizerTest.php
index f0e21c9..d33881f 100644
--- a/tests/Phpml/Preprocessing/NormalizerTest.php
+++ b/tests/Phpml/Preprocessing/NormalizerTest.php
@@ -79,4 +79,24 @@ class NormalizerTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals($normalized, $samples, '', $delta = 0.01);
     }
+
+    public function testL1NormWithZeroSumCondition()
+    {
+        $samples = [
+            [0, 0, 0],
+            [2, 0, 0],
+            [0, 1, -1],
+        ];
+
+        $normalized = [
+            [0.33, 0.33, 0.33],
+            [1.0, 0.0, 0.0],
+            [0.0, 0.5, -0.5],
+        ];
+
+        $normalizer = new Normalizer(Normalizer::NORM_L1);
+        $normalizer->transform($samples);
+
+        $this->assertEquals($normalized, $samples, '', $delta = 0.01);
+    }
 }