Add tests for missing and empty FILENAMEs

tests/configuration/test_config.py

@@ -191,3 +191,13 @@ class TestConfig(TestBase):
         # blacklist logger section
         self.assertEqual(config["failures"]["filename"], "blacklist")
         self.assertEqual(config["failures"]["encoding"], "utf-8")
+
+    def test_confparse_empty(self):
+        config = linkcheck.configuration.Configuration()
+        files = [get_file("config.empty")]
+        self.assertRaises(linkcheck.LinkCheckerError, config.read, files)
+
+    def test_confparse_missing(self):
+        config = linkcheck.configuration.Configuration()
+        files = [get_file("no_such_config")]
+        self.assertRaises(linkcheck.LinkCheckerError, config.read, files)

tests/test_cookies.py

@@ -18,6 +18,7 @@ Test cookie routines.
 """
 
 import os
+from pathlib import Path
 
 import linkcheck.cookies
 import linkcheck.configuration
@@ -80,3 +81,10 @@ class TestCookies(TestBase):
         aggregate.add_request_session()
         session = aggregate.get_request_session()
         self.assertEqual({c.name for c in session.cookies}, {"om", "multiple", "are"})
+
+    def test_empty_cookie_file(self):
+        self.assertRaises(
+            linkcheck.LinkCheckerError,
+            linkcheck.cookies.from_file,
+            Path(__file__).parent / "configuration/data/config.empty",
+        )

tests/test_linkchecker.py

@@ -40,3 +40,6 @@ class TestLinkchecker(unittest.TestCase):
             run_with_options([option])
         # unknown option
         self.assertRaises(OSError, run_with_options, ["--imadoofus"])
+        # non-existent FILENAMEs
+        self.assertRaises(OSError, run_with_options, ["--config", "no_such_file"])
+        self.assertRaises(OSError, run_with_options, ["--cookiefile", "no_such_file"])