adding a basic test for the service

Author: weaverryan

tests/Service/KnpUIpsumTest.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace App\Tests\Service;
+
+use App\Service\KnpUIpsum;
+use PHPUnit\Framework\TestCase;
+
+class KnpUIpsumTest extends TestCase
+{
+    public function testGetWords()
+    {
+        $ipsum = new KnpUIpsum();
+
+        $words = $ipsum->getWords(1);
+        $this->assertInternalType('string', $words);
+        $this->assertCount(1, explode(' ', $words));
+
+        $words = $ipsum->getWords(10);
+        $this->assertCount(10, explode(' ', $words));
+
+        $words = $ipsum->getWords(10, true);
+        $this->assertCount(10, $words);
+    }
+
+    public function testGetSentences()
+    {
+        $ipsum = new KnpUIpsum();
+
+        $text = $ipsum->getSentences(3);
+        $this->assertEquals(3, substr_count($text, '.'));
+        $sentences = explode('.', $text);
+        // 3 items will be the sentences, then one final empty entry for the last period
+        $this->assertCount(4, $sentences);
+        // the second and third entries should start with a space
+        $this->assertEquals(' ', $sentences[1][0]);
+        $this->assertEquals(' ', $sentences[2][0]);
+    }
+
+    public function testGetParagraphs()
+    {
+        // weird: using a loop because the results are random, and so
+        // they may pass several times by luck
+        for ($i = 0; $i < 100; $i++) {
+            $ipsum = new KnpUIpsum();
+            $text = $ipsum->getParagraphs(3);
+            $paragraphs = explode("\n\n", $text);
+            $this->assertCount(3, $paragraphs);
+
+            foreach ($paragraphs as $paragraph) {
+                // default constructor args should give us 1 unicorn & 3 sunshines
+                $this->assertGreaterThanOrEqual(
+                    1,
+                    substr_count(strtolower($paragraph), 'unicorn'),
+                    sprintf('Text "%s" does not contain 1 unicorn', $paragraph)
+                );
+                $this->assertGreaterThanOrEqual(
+                    3,
+                    substr_count(strtolower($paragraph), 'sunshine'),
+                    sprintf('Text "%s" does not contain 3 sunshine', $paragraph)
+                );
+            }
+
+            $i++;
+        }
+    }
+}