Testing pretty print produces good html

Signed-off-by: Mike Terzo <mike@terzo.org>

test/test_utils.py

@@ -14,7 +14,7 @@ from puppetboard import utils
 from puppetboard import app
 from puppetboard.app import NoContent
 
-
+from bs4 import BeautifulSoup
 import logging
 
 
@@ -54,6 +54,15 @@ def test_get():
     assert x == utils.get_or_abort(test_get_or_abort)
 
 
+def test_pretty_print():
+    test_data = [{'hello': 'world'}]
+
+    html = utils.prettyprint(test_data)
+    soup = BeautifulSoup(html, 'html.parser')
+
+    assert soup.th.text == 'hello'
+
+
 @pytest.fixture
 def mock_log(mocker):
     return mocker.patch('logging.log')