Added a template parser test

Author: michaeljennings

tests/ParserTest.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Coreplex\Notifier\Tests;
+
+class ParserTest extends BaseTest
+{
+    public function testParseReturnsString()
+    {
+        $parser = $this->parser();
+        $template = 'hello world';
+
+        $this->assertInternalType('string', $parser->parse($template));
+    }
+
+    public function testParserReplacesPlaceholders()
+    {
+        $parser = $this->parser();
+        $template = '{{ foo }} [if:baz] {{ baz }} [endif]';
+        $parsed = $parser->parse($template, [
+            'foo' => 'bar',
+            'baz' => 'qux'
+        ]);
+
+        $this->assertContains('bar', $parsed);
+        $this->assertContains('qux', $parsed);
+    }
+
+    public function testIfStatementsAreRemovedIfReplacementIsNotSet()
+    {
+        $parser = $this->parser();
+        $template = '{{ foo }} [if:baz] {{ baz }} [endif]';
+        $parsed = $parser->parse($template, [
+            'foo' => 'bar',
+        ]);
+
+        $this->assertContains('bar', $parsed);
+        $this->assertNotContains('qux', $parsed);
+    }
+}