diff --git a/src/config.py b/src/config.py
index 7365ab8b..2be0c498 100644
--- a/src/config.py
+++ b/src/config.py
@@ -8,9 +8,11 @@
 MAX_TOTAL_SIZE_BYTES = 500 * 1024 * 1024  # 500 MB
 
 MAX_DISPLAY_SIZE: int = 300_000
-TMP_BASE_PATH = Path("/tmp/gitingest")
 DELETE_REPO_AFTER: int = 60 * 60  # In seconds
 
+OUTPUT_FILE_PATH = "digest.txt"
+TMP_BASE_PATH = Path("/tmp/gitingest")
+
 EXAMPLE_REPOS: list[dict[str, str]] = [
     {"name": "Gitingest", "url": "https://github.com/cyclotruc/gitingest"},
     {"name": "FastAPI", "url": "https://github.com/tiangolo/fastapi"},
diff --git a/src/gitingest/cli.py b/src/gitingest/cli.py
index a21a4533..18a0e106 100644
--- a/src/gitingest/cli.py
+++ b/src/gitingest/cli.py
@@ -6,7 +6,7 @@
 
 import click
 
-from config import MAX_FILE_SIZE
+from config import MAX_FILE_SIZE, OUTPUT_FILE_PATH
 from gitingest.repository_ingest import ingest
 
 
@@ -84,7 +84,7 @@ async def _async_main(
         include_patterns = set(include_pattern)
 
         if not output:
-            output = "digest.txt"
+            output = OUTPUT_FILE_PATH
         summary, _, _ = await ingest(source, max_size, include_patterns, exclude_patterns, output=output)
 
         click.echo(f"Analysis complete! Output written to: {output}")
diff --git a/tests/test_cli.py b/tests/test_cli.py
new file mode 100644
index 00000000..86bd2271
--- /dev/null
+++ b/tests/test_cli.py
@@ -0,0 +1,41 @@
+""" Tests for the gitingest cli """
+
+import os
+
+from click.testing import CliRunner
+
+from config import MAX_FILE_SIZE, OUTPUT_FILE_PATH
+from gitingest.cli import main
+
+
+def test_cli_with_default_options():
+    runner = CliRunner()
+    result = runner.invoke(main, ["./"])
+    output_lines = result.output.strip().split("\n")
+    assert f"Analysis complete! Output written to: {OUTPUT_FILE_PATH}" in output_lines
+    assert os.path.exists(OUTPUT_FILE_PATH), f"Output file was not created at {OUTPUT_FILE_PATH}"
+
+    os.remove(OUTPUT_FILE_PATH)
+
+
+def test_cli_with_options():
+    runner = CliRunner()
+    result = runner.invoke(
+        main,
+        [
+            "./",
+            "--output",
+            OUTPUT_FILE_PATH,
+            "--max-size",
+            MAX_FILE_SIZE,
+            "--exclude-pattern",
+            "tests/",
+            "--include-pattern",
+            "src/",
+        ],
+    )
+    output_lines = result.output.strip().split("\n")
+    assert f"Analysis complete! Output written to: {OUTPUT_FILE_PATH}" in output_lines
+    assert os.path.exists(OUTPUT_FILE_PATH), f"Output file was not created at {OUTPUT_FILE_PATH}"
+
+    os.remove(OUTPUT_FILE_PATH)