Build out all 27 modules + capstone (#1)

Co-authored-by: claude <claude@jpaul.io>
Co-committed-by: claude <claude@jpaul.io>

modules/14-continuous-integration/lab/test_tasks.py

@@ -0,0 +1,36 @@
+"""Tests for the tasks-app core logic — the kind of suite Module 13 has you write.
+
+Reproduced here so this module's lab is self-contained: if you already wrote tests in Module 13,
+use those instead. Run locally with `pytest -q` from the project folder. CI runs exactly this.
+"""
+
+from tasks import TaskList
+
+
+def test_add_appends_a_task():
+    tl = TaskList()
+    tl.add("write the CI lesson")
+    assert len(tl.tasks) == 1
+    assert tl.tasks[0].title == "write the CI lesson"
+    assert tl.tasks[0].done is False
+
+
+def test_complete_marks_a_task_done():
+    tl = TaskList()
+    tl.add("ship it")
+    tl.complete(0)
+    assert tl.tasks[0].done is True
+
+
+def test_pending_excludes_completed_tasks():
+    tl = TaskList()
+    tl.add("a")
+    tl.add("b")
+    tl.complete(0)
+    pending = tl.pending()
+    assert len(pending) == 1
+    assert pending[0].title == "b"
+
+
+def test_render_is_friendly_when_empty():
+    assert TaskList().render() == "(no tasks yet)"