Added test for pipelines resolution from directory

tests/files/pipelines/pipeline-1.yml

@@ -0,0 +1,6 @@
+name: Test 1
+priority: 10
+transformations:
+  - id: test-1
+    type: field_name_suffix
+    suffix: .test

tests/files/pipelines/pipeline-2.yml

@@ -0,0 +1,6 @@
+name: Test 2
+priority: 10
+transformations:
+  - id: test-2
+    type: field_name_prefix
+    prefix: test.

tests/test_processing_resolver.py

@@ -5,7 +5,10 @@
 )
 from sigma.processing.resolver import ProcessingPipelineResolver
 from sigma.processing.pipeline import ProcessingPipeline, ProcessingItem
-from sigma.processing.transformations import AddFieldnameSuffixTransformation
+from sigma.processing.transformations import (
+    AddFieldnamePrefixTransformation,
+    AddFieldnameSuffixTransformation,
+)
 from collections.abc import Iterable
 
 
@@ -58,6 +61,21 @@ def test_resolve_file(processing_pipeline_resolver: ProcessingPipelineResolver):
     )
 
 
+def test_resolve_directory(processing_pipeline_resolver):
+    assert processing_pipeline_resolver.resolve(["tests/files/pipelines"]) == ProcessingPipeline(
+        items=[
+            ProcessingItem(
+                AddFieldnameSuffixTransformation(".test"),
+                identifier="test-1",
+            ),
+            ProcessingItem(
+                AddFieldnamePrefixTransformation("test."),
+                identifier="test-2",
+            ),
+        ],
+    )
+
+
 def test_resolve_callable():
     pipeline = ProcessingPipeline(
         [ProcessingItem(AddFieldnameSuffixTransformation(".item-1"))],