test: add databricks file_format delta test

Made-with: Cursor

Author: themavik

tests/unit/monitor/test_dbt_project_config.py

@@ -0,0 +1,28 @@
+"""Tests for elementary monitor dbt_project configuration."""
+
+import os
+
+FILE_DIR = os.path.dirname(os.path.realpath(__file__))
+DBT_PROJECT_PATH = os.path.normpath(
+    os.path.join(
+        FILE_DIR,
+        "..",
+        "..",
+        "..",
+        "elementary",
+        "monitor",
+        "dbt_project",
+        "dbt_project.yml",
+    )
+)
+
+
+def test_databricks_target_uses_delta_file_format():
+    """When target.type is databricks, file_format should be delta."""
+    with open(DBT_PROJECT_PATH) as f:
+        content = f.read()
+    assert "databricks" in content, "databricks must be in target.type condition for delta"
+    assert "file_format" in content
+    assert "delta" in content
+    assert "spark" in content
+    assert "fabricspark" in content