Expose Sheet::isActive() to provide info about the last active sheet (#405)

tests/Spout/Reader/CSV/SheetTest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace Box\Spout\Reader\CSV;
+
+use Box\Spout\Common\Type;
+use Box\Spout\Reader\ReaderFactory;
+use Box\Spout\TestUsingResource;
+
+/**
+ * Class SheetTest
+ *
+ * @package Box\Spout\Reader\CSV
+ */
+class SheetTest extends \PHPUnit_Framework_TestCase
+{
+    use TestUsingResource;
+
+    /**
+     * @return void
+     */
+    public function testReaderShouldReturnCorrectSheetInfos()
+    {
+        $sheet = $this->openFileAndReturnSheet('csv_standard.csv');
+
+        $this->assertEquals('', $sheet->getName());
+        $this->assertEquals(0, $sheet->getIndex());
+        $this->assertTrue($sheet->isActive());
+    }
+
+    /**
+     * @param string $fileName
+     * @return Sheet
+     */
+    private function openFileAndReturnSheet($fileName)
+    {
+        $resourcePath = $this->getResourcePath($fileName);
+        $reader = ReaderFactory::create(Type::CSV);
+        $reader->open($resourcePath);
+
+        $sheet = $reader->getSheetIterator()->current();
+
+        $reader->close();
+
+        return $sheet;
+    }
+}