Have DESIGN_MATRIX not require design_sheet and default_sheet

This commit makes the DESIGN_MATRIX keyword not require arguments for design and default
sheet. Now DESIGN_SHEET defaults to `DesignSheet01` and `DEFAULT_SHEET` defaults to "DefaultSheet"

Author: jonathan-eq

src/ert/config/design_matrix.py

@@ -44,8 +44,8 @@ def __post_init__(self) -> None:
     def from_config_list(cls, config_list: list[str]) -> DesignMatrix:
         filename = Path(config_list[0])
         options = option_dict(config_list, 1)
-        design_sheet = options.get("DESIGN_SHEET")
-        default_sheet = options.get("DEFAULT_SHEET")
+        design_sheet = options.get("DESIGN_SHEET", "DesignSheet01")
+        default_sheet = options.get("DEFAULT_SHEET", "DefaultSheet")
         errors = []
         if filename.suffix not in {
             ".xlsx",
@@ -56,14 +56,6 @@ def from_config_list(cls, config_list: list[str]) -> DesignMatrix:
                     f"DESIGN_MATRIX must be of format .xls or .xlsx; is '{filename}'"
                 ).set_context(config_list)
             )
-        if design_sheet is None:
-            errors.append(
-                ErrorInfo("Missing required DESIGN_SHEET").set_context(config_list)
-            )
-        if default_sheet is None:
-            errors.append(
-                ErrorInfo("Missing required DEFAULT_SHEET").set_context(config_list)
-            )
         if design_sheet is not None and design_sheet == default_sheet:
             errors.append(
                 ErrorInfo(

src/ert/config/parsing/config_schema.py

@@ -257,7 +257,7 @@ def install_job_directory_keyword() -> SchemaItem:
 def design_matrix_keyword() -> SchemaItem:
     return SchemaItem(
         kw=ConfigKeys.DESIGN_MATRIX,
-        argc_min=3,
+        argc_min=1,
         argc_max=3,
         type_map=[
             SchemaItemType.EXISTING_PATH,

tests/ert/unit_tests/config/test_analysis_config.py

@@ -122,34 +122,36 @@ def test_invalid_design_matrix_format_raises_validation_error():
         )
 
 
-def test_design_matrix_without_design_sheet_raises_validation_error():
-    with pytest.raises(ConfigValidationError, match="Missing required DESIGN_SHEET"):
-        AnalysisConfig.from_dict(
+def test_design_matrix_with_unknown_argument_uses_default(tmp_path, monkeypatch):
+    monkeypatch.chdir(tmp_path)
+    with pd.ExcelWriter("my_design_matrix.xlsx") as xl_write:
+        design_matrix_df = pd.DataFrame(
             {
-                ConfigKeys.DESIGN_MATRIX: [
-                    [
-                        "my_matrix.xlsx",
-                        "DESIGN_:design",
-                        "DEFAULT_SHEET:default",
-                    ]
-                ],
+                "REAL": [0, 1, 2],
+                "a": [1, 2, 3],
+                "b": [0, 2, 0],
             }
         )
-
-
-def test_design_matrix_without_default_sheet_raises_validation_error():
-    with pytest.raises(ConfigValidationError, match="Missing required DEFAULT_SHEET"):
+        default_sheet_df = pd.DataFrame([["a", 1], ["b", 4]])
+        design_matrix_df.to_excel(xl_write, index=False, sheet_name="DesignSheet01")
+        default_sheet_df.to_excel(
+            xl_write, index=False, sheet_name="my_default_sheet", header=False
+        )
+    assert (
         AnalysisConfig.from_dict(
             {
+                ConfigKeys.NUM_REALIZATIONS: 3,
                 ConfigKeys.DESIGN_MATRIX: [
                     [
-                        "my_matrix.xlsx",
-                        "DESIGN_SHEET:design",
-                        "DEFAULT_:default",
+                        os.path.abspath("my_design_matrix.xlsx"),
+                        "foo_argument:bar",
+                        "DEFAULT_SHEET:my_default_sheet",
                     ]
                 ],
             }
-        )
+        ).design_matrix.design_sheet
+        == "DesignSheet01"
+    )
 
 
 def test_invalid_min_realization_percentage_raises_config_validation_error():

tests/ert/unit_tests/config/test_ert_config.py

@@ -10,6 +10,7 @@
 from textwrap import dedent
 from unittest.mock import MagicMock
 
+import pandas as pd
 import pytest
 from hypothesis import HealthCheck, assume, given, settings
 from hypothesis import strategies as st
@@ -29,6 +30,7 @@
 from ert.config.parsing.queue_system import QueueSystem
 from ert.plugins import ErtPluginManager
 from ert.shared import ert_share_path
+from tests.ert.ui_tests.cli.analysis.test_design_matrix import _create_design_matrix
 
 from .config_dict_generator import config_generators
 
@@ -1991,3 +1993,25 @@ def run(self, *args):
 
     assert ert_config.substitutions["<FOO>"] == "ertconfig_foo"
     assert ert_config.substitutions["<FOO2>"] == "ertconfig_foo2"
+
+
+def test_design_matrix_default_argument(tmp_path):
+    design_matrix_file = tmp_path / "my_design_matrix.xlsx"
+    _create_design_matrix(
+        design_matrix_file,
+        pd.DataFrame(
+            {
+                "REAL": [1],
+                "a": [1],
+                "category": ["cat1"],
+            }
+        ),
+        pd.DataFrame([["b", 1], ["c", 2]]),
+    )
+
+    config = ErtConfig.from_file_contents(
+        f"NUM_REALIZATIONS 1\nDESIGN_MATRIX {design_matrix_file}"
+    )
+    assert config.analysis_config.design_matrix
+    assert config.analysis_config.design_matrix.design_sheet == "DesignSheet01"
+    assert config.analysis_config.design_matrix.default_sheet == "DefaultSheet"