Add simple tests for fish and Taginfo.

tests/test_completion.py

@@ -0,0 +1,9 @@
+"""
+Test Fish shell completion.
+"""
+from map_machine.ui.completion import completion_commands
+
+
+def test_completion() -> None:
+    commands: str = completion_commands()
+    assert commands.startswith("set -l")

tests/test_taginfo.py

@@ -0,0 +1,17 @@
+"""
+Test Taginfo project generation.
+"""
+from pathlib import Path
+
+from map_machine.doc.taginfo import TaginfoProjectFile
+from tests import SCHEME
+
+
+def test_taginfo() -> None:
+    """Test Taginfo project generation."""
+    output_file_path: Path = Path("temp") / "taginfo.json"
+
+    project_file: TaginfoProjectFile = TaginfoProjectFile(
+        output_file_path, SCHEME
+    )
+    assert project_file.structure["project"]["name"] == "Map Machine"