Add test for CLI --export-associated

tests/test_cli_export_associated.py

@@ -0,0 +1,59 @@
+from pathlib import Path
+
+from click.testing import CliRunner
+
+from imagedephi.main import imagedephi
+
+
+def test_cli_export_associated(
+    cli_runner: CliRunner,
+    tmp_path: Path,
+    data_dir: Path,
+    test_image_svs: Path,
+) -> None:
+    """Exercise the CLI with --export-associated and verify output directory creation."""
+    input_image = test_image_svs
+    output_dir = tmp_path / "output"
+    output_dir.mkdir()
+
+    result = cli_runner.invoke(
+        imagedephi,
+        [
+            "run",
+            str(input_image),
+            "--output-dir",
+            str(output_dir),
+            "-e",
+        ],
+    )
+
+    assert result.exit_code == 0
+    associated_dirs = [d for d in output_dir.iterdir() if "Associated" in d.name and d.is_dir()]
+    assert len(associated_dirs) == 1
+
+
+def test_cli_export_associated_long_flag(
+    cli_runner: CliRunner,
+    tmp_path: Path,
+    data_dir: Path,
+    test_image_svs: Path,
+) -> None:
+    """Verify the long --export-associated flag creates the directory."""
+    input_image = test_image_svs
+    output_dir = tmp_path / "output"
+    output_dir.mkdir()
+
+    result = cli_runner.invoke(
+        imagedephi,
+        [
+            "run",
+            str(input_image),
+            "--output-dir",
+            str(output_dir),
+            "--export-associated",
+        ],
+    )
+
+    assert result.exit_code == 0
+    associated_dirs = [d for d in output_dir.iterdir() if "Associated" in d.name and d.is_dir()]
+    assert len(associated_dirs) == 1