diff --git a/tests/basic/test_special.py b/tests/basic/test_special.py
index e69de29bb..51b006f69 100644
--- a/tests/basic/test_special.py
+++ b/tests/basic/test_special.py
@@ -0,0 +1,66 @@
+import os
+import pytest
+from aider.special import is_important, filter_important_files
+
+def test_is_important():
+    # Test common important files
+    assert is_important("README.md")
+    assert is_important(".gitignore")
+    assert is_important("requirements.txt")
+    assert is_important("setup.py")
+
+    # Test files in .github/workflows
+    assert is_important(os.path.join(".github", "workflows", "test.yml"))
+    assert is_important(os.path.join(".github", "workflows", "deploy.yml"))
+
+    # Test files that should not be considered important
+    assert not is_important("random_file.txt")
+    assert not is_important("src/main.py")
+    assert not is_important("tests/test_app.py")
+
+def test_filter_important_files():
+    files = [
+        "README.md",
+        "src/main.py",
+        ".gitignore",
+        "tests/test_app.py",
+        "requirements.txt",
+        ".github/workflows/test.yml",
+        "random_file.txt",
+    ]
+
+    important_files = filter_important_files(files)
+
+    assert set(important_files) == {
+        "README.md",
+        ".gitignore",
+        "requirements.txt",
+        ".github/workflows/test.yml",
+    }
+
+def test_is_important_case_sensitivity():
+    # Test case sensitivity
+    assert is_important("README.md")
+    assert not is_important("readme.md")
+    assert is_important(".gitignore")
+    assert not is_important(".GITIGNORE")
+
+def test_is_important_with_paths():
+    # Test with different path formats
+    assert is_important("project/README.md")
+    assert is_important("./README.md")
+    assert is_important("/absolute/path/to/README.md")
+
+@pytest.mark.parametrize("file_path", [
+    "README",
+    "README.txt",
+    "README.rst",
+    "LICENSE",
+    "LICENSE.md",
+    "LICENSE.txt",
+    "Dockerfile",
+    "package.json",
+    "pyproject.toml",
+])
+def test_is_important_various_files(file_path):
+    assert is_important(file_path)