add three-granule cli run test

tests/unit/test_run_stitchee.py

@@ -0,0 +1,57 @@
+import sys
+from pathlib import Path
+from unittest.mock import patch
+
+import pytest
+
+import concatenator
+from concatenator.run_stitchee import parse_args
+
+
+def path_str(dir_path: Path, filename: str) -> str:
+    return str(dir_path.joinpath(filename))
+
+
+def test_parser():
+    parsed = parse_args(
+        ["ncfile1", "ncfile2", "ncfile3", "-o", "outfile", "--concat_dim", "mirror_step"]
+    )
+
+    assert parsed.input == ["ncfile1", "ncfile2", "ncfile3"]
+    assert parsed.output_path == "outfile"
+    assert parsed.concat_dim == "mirror_step"
+    assert parsed.concat_method == "xarray-concat"
+    assert parsed.verbose is False
+
+
+@pytest.mark.usefixtures("pass_options")
+class TestBatching:
+    __test_path = Path(__file__).parents[1].resolve()
+    __data_path = __test_path.joinpath("data")
+    __harmony_path = __data_path.joinpath("harmony")
+    __granules_path = __harmony_path.joinpath("granules")
+
+    def test_run_stitchee_cli_with_no_error(self, temp_output_dir):
+        test_args = [
+            concatenator.run_stitchee.__file__,
+            path_str(
+                self.__granules_path, "TEMPO_NO2_L2_V03_20240601T210934Z_S012G01_subsetted.nc4"
+            ),
+            path_str(
+                self.__granules_path, "TEMPO_NO2_L2_V03_20240601T211614Z_S012G02_subsetted.nc4"
+            ),
+            path_str(
+                self.__granules_path, "TEMPO_NO2_L2_V03_20240601T212254Z_S012G03_subsetted.nc4"
+            ),
+            "--copy_input_files",
+            "--verbose",
+            "-o",
+            path_str(temp_output_dir, "test_run_stitchee_output.nc"),
+            "--concat_method",
+            "xarray-concat",
+            "--concat_dim",
+            "mirror_step",
+        ]
+
+        with patch.object(sys, "argv", test_args):
+            concatenator.run_stitchee.main()