renderer tests

tests/unit/Renderer/TestSimplePhpRenderer.php

+<?php
+
+use WPDesk\View\Resolver\ChainResolver;
+use WPDesk\View\Resolver\Exception\CanNotResolve;
+use WPDesk\View\Resolver\NullResolver;
+
+class TestSimplePhpRenderer extends \PHPUnit\Framework\TestCase
+{
+    const TEXT_IN_TEMPLATE = 'outputText';
+
+    const TEMPLATE_NAME = 'some_template';
+
+    const TEMPLATE_DIR = '/templates';
+
+    public function testRenderWithDirResolver()
+    {
+        $renderer = new \WPDesk\View\Renderer\SimplePhpRenderer(new \WPDesk\View\Resolver\DirResolver(__DIR__ . self::TEMPLATE_DIR));
+        $this->assertEquals(self::TEXT_IN_TEMPLATE, $renderer->render(self::TEMPLATE_NAME));
+    }
+}
\ No newline at end of file

tests/unit/Renderer/templates/some_template.php

+<?php
+    echo 'outputText';
\ No newline at end of file

tests/unit/Resolver/templates/some_template.php

-<?php
-    echo 'outputText';
\ No newline at end of file
+this is dummy text
\ No newline at end of file