add tests

tests/test_scroll.py

@@ -0,0 +1,19 @@
+"Test that more cards load after scrolling"
+from src.testproject.sdk.drivers import webdriver
+import time
+
+def test_cards_load(driver):
+    "test that cards load on the page, and more load as we scroll"
+    num_cards = []
+    num_cards.append(len(driver.find_elements_by_class_name('post-wrapper')))
+
+    driver = webdriver.Chrome()
+    driver.execute_script("window.scrollTo(0, 100000)")
+    # time.sleep(3)
+    num_cards.append(len(driver.find_elements_by_class_name('post-wrapper')))
+
+    # test that cards are loaded
+    assert num_cards[0] >= 3
+    # test that more cards are loaded after scrolling
+    assert num_cards[0] > num_cards[1]
+