datatransformer test set

src/Phpml/SupportVectorMachine/DataTransformer.php

@@ -23,6 +23,21 @@ class DataTransformer
         return $set;
     }
 
+    /**
+     * @param array $samples
+     *
+     * @return string
+     */
+    public static function testSet(array $samples): string
+    {
+        $set = '';
+        foreach ($samples as $sample) {
+            $set .= sprintf('0 %s %s', self::sampleRow($sample), PHP_EOL);
+        }
+
+        return $set;
+    }
+
     /**
      * @param array $labels
      *

src/Phpml/SupportVectorMachine/SupportVectorMachine.php

@@ -83,5 +83,6 @@ class SupportVectorMachine
 
     public function predict(array $samples)
     {
+        $testSet = DataTransformer::testSet();
     }
 }

tests/Phpml/SupportVectorMachine/DataTransformerTest.php

@@ -22,4 +22,19 @@ class DataTransformerTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals($trainingSet, DataTransformer::trainingSet($samples, $labels));
     }
+
+    public function testTransformSamplesToTestSet()
+    {
+        $samples = [[1, 1], [2, 1], [3, 2], [4, 5]];
+
+        $testSet =
+            '0 1:1 2:1 '.PHP_EOL.
+            '0 1:2 2:1 '.PHP_EOL.
+            '0 1:3 2:2 '.PHP_EOL.
+            '0 1:4 2:5 '.PHP_EOL
+        ;
+
+        $this->assertEquals($testSet, DataTransformer::testSet($samples));
+    }
+
 }