Add test for asserting downloaded files

Author: mdmintz

examples/test_download_files.py

@@ -0,0 +1,15 @@
+from seleniumbase import BaseCase
+
+
+class DownloadTests(BaseCase):
+
+    def test_download_files(self):
+        self.open("https://pypi.org/project/seleniumbase/#files")
+        pkg_header = self.get_text("h1.package-header__name")
+        pkg_name = pkg_header.replace(" ", "-")
+        whl_file = pkg_name + "-py2.py3-none-any.whl"
+        self.click('div#files a[href$="%s"]' % whl_file)
+        self.assert_downloaded_file(whl_file)
+        tar_gz_file = pkg_name + ".tar.gz"
+        self.click('div#files a[href$="%s"]' % tar_gz_file)
+        self.assert_downloaded_file(tar_gz_file)