tests: add tests for config checks

tests/project/test_config_arguments.py

@@ -0,0 +1,150 @@
+import pytest
+import pathlib
+from unittest.mock import patch
+from map2loop.project import Project
+from map2loop.m2l_enums import Datatype
+import map2loop
+
+# ------------------------------------------------------------------------------
+# Common fixtures or helper data (bounding box, minimal filenames, etc.)
+# ------------------------------------------------------------------------------
+
+@pytest.fixture
+def minimal_bounding_box():
+    return {
+        "minx": 515687.31005864,
+        "miny": 7493446.76593407,
+        "maxx": 562666.860106543,
+        "maxy": 7521273.57407786,
+        "base": -3200,
+        "top": 3000,
+    }
+
+@pytest.fixture
+def geology_file():
+    return str(
+        pathlib.Path(map2loop.__file__).parent
+        / pathlib.Path('_datasets/geodata_files/hamersley/geology.geojson')
+    )
+
+@pytest.fixture
+def structure_file():
+    return str(
+        pathlib.Path(map2loop.__file__).parent
+        / pathlib.Path('_datasets/geodata_files/hamersley/structure.geojson')
+    )
+
+@pytest.fixture
+def dtm_file():
+    return str(
+        pathlib.Path(map2loop.__file__).parent
+        / pathlib.Path('_datasets/geodata_files/hamersley/dtm_rp.tif')
+    )
+
+@pytest.fixture
+def valid_config_dictionary():
+    """
+    A valid config dictionary that meets the 'structure' and 'geology' requirements
+    """
+    return {
+        "structure": {
+            "dipdir_column": "azimuth2",
+            "dip_column": "dip"
+        },
+        "geology": {
+            "unitname_column": "unitname",
+            "alt_unitname_column": "code",
+        }
+    }
+
+
+
+# 1) config_filename and config_dictionary both present should raise ValueError
+def test_config_filename_and_dictionary_raises_error(
+    minimal_bounding_box, geology_file, dtm_file, structure_file, valid_config_dictionary
+):
+
+    with pytest.raises(ValueError, match="Both 'config_filename' and 'config_dictionary' were provided"):
+        Project(
+            bounding_box=minimal_bounding_box,
+            working_projection="EPSG:28350",
+            geology_filename=geology_file,
+            dtm_filename=dtm_file,
+            structure_filename=structure_file,
+            config_filename="dummy_config.json",
+            config_dictionary=valid_config_dictionary,
+        )
+
+# 2) No config_filename or config_dictionary should raise ValueError
+def test_no_config_provided_raises_error(
+    minimal_bounding_box, geology_file, dtm_file, structure_file
+):
+
+    with pytest.raises(ValueError, match="A config file is required to run map2loop"):
+        Project(
+            bounding_box=minimal_bounding_box,
+            working_projection="EPSG:28350",
+            geology_filename=geology_file,
+            dtm_filename=dtm_file,
+            structure_filename=structure_file,
+        )
+
+# 3) Passing an unexpected argument should raise TypeError
+def test_unexpected_argument_raises_error(
+    minimal_bounding_box, geology_file, dtm_file, structure_file, valid_config_dictionary
+):
+
+    with pytest.raises(TypeError, match="unexpected keyword argument 'config_file'"):
+        Project(
+            bounding_box=minimal_bounding_box,
+            working_projection="EPSG:28350",
+            geology_filename=geology_file,
+            dtm_filename=dtm_file,
+            structure_filename=structure_file,
+            config_dictionary=valid_config_dictionary,
+            config_file="wrong_kwarg.json", 
+        )
+
+# 4) Dictionary missing a required key should raise ValueError
+
+def test_dictionary_missing_required_key_raises_error(
+    minimal_bounding_box, geology_file, dtm_file, structure_file
+):
+
+    invalid_dictionary = {
+        "structure": {"dipdir_column": "azimuth2", "dip_column": "dip"},
+        "geology": {"unitname_column": "unitname"}  # alt_unitname_column missing
+    }
+
+    with pytest.raises(ValueError, match="Missing required key 'alt_unitname_column' for 'geology'"):
+        Project(
+            bounding_box=minimal_bounding_box,
+            working_projection="EPSG:28350",
+            geology_filename=geology_file,
+            dtm_filename=dtm_file,
+            structure_filename=structure_file,
+            config_dictionary=invalid_dictionary,
+        )
+
+# 5) All good => The Project should be created without errors
+def test_good_config_runs_successfully(
+    minimal_bounding_box, geology_file, dtm_file, structure_file, valid_config_dictionary
+):
+    project = None
+    try:
+        project = Project(
+            bounding_box=minimal_bounding_box,
+            working_projection="EPSG:28350",
+            geology_filename=geology_file,
+            dtm_filename=dtm_file,
+            structure_filename=structure_file,
+            config_dictionary=valid_config_dictionary,
+        )
+    except Exception as e:
+        pytest.fail(f"Project initialization raised an unexpected exception: {e}")
+
+    assert project is not None, "Project was not created."
+    assert project.map_data.config.structure_config["dipdir_column"] == "azimuth2"
+    assert project.map_data.config.structure_config["dip_column"] == "dip"
+    assert project.map_data.config.geology_config["unitname_column"] == "unitname"
+    assert project.map_data.config.geology_config["alt_unitname_column"] == "code"