Improve tests (#152)

* Add pytest-cov, improve coverage

* fix

.gitignore

@@ -6,3 +6,5 @@
 __pycache__/
 /dist/
 /assets/*.gif
+/.coverage
+/htmlcov/

.pre-commit-config.yaml

@@ -13,12 +13,12 @@ repos:
     - id: isort
       additional_dependencies: [toml]
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.13.0
+    rev: v1.14.1
     hooks:
     -   id: mypy
         additional_dependencies: [types-requests]
 -   repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: 'v0.7.4'
+    rev: 'v0.9.4'
     hooks:
       - id: ruff
         args:

pyproject.toml

@@ -25,6 +25,9 @@ pytest = "^8.3.4"
 pytest-socket = "^0.7.0"
 vcrpy = "^7.0.0"
 
+[tool.poetry.group.dev.dependencies]
+pytest-cov = "^6.0.0"
+
 [tool.ruff]
 lint.ignore = ["E501"]
 

tests/test_utils.py

@@ -1,6 +1,6 @@
 from unittest import TestCase
 
-from cert_host_scraper.utils import strip_url
+from cert_host_scraper.utils import divide_chunks, strip_url
 
 
 class TestStripUrl(TestCase):
@@ -16,3 +16,25 @@ def test_strip_www(self):
     def test_strip_path(self):
         self.assertEqual("example.com", strip_url("example.com/"))
         self.assertEqual("example.com", strip_url("example.com/hello"))
+
+
+class TestDivideChunks(TestCase):
+    def test_even_chunks(self):
+        self.assertEqual(
+            list(divide_chunks(["a", "b", "c", "d"], 2)), [["a", "b"], ["c", "d"]]
+        )
+
+    def test_uneven_chunks(self):
+        self.assertEqual(list(divide_chunks(["a", "b", "c"], 2)), [["a", "b"], ["c"]])
+
+    def test_single_element_chunks(self):
+        self.assertEqual(list(divide_chunks(["a", "b", "c"], 1)), [["a"], ["b"], ["c"]])
+
+    def test_chunk_size_larger_than_list(self):
+        self.assertEqual(list(divide_chunks(["a", "b"], 5)), [["a", "b"]])
+
+    def test_empty_list(self):
+        self.assertEqual(list(divide_chunks([], 3)), [])
+
+    def test_chunk_size_one(self):
+        self.assertEqual(list(divide_chunks(["a"], 1)), [["a"]])