fix: do not detect resource type if type is provided by user (#1690)

- fixes #1688

Author: pierrecamilleri

frictionless/resource/__spec__/test_datatype.py

@@ -1,6 +1,7 @@
 import pytest
 
 from frictionless import Resource, resources
+from frictionless.resources.json import SchemaResource
 
 # File
 
@@ -162,3 +163,16 @@ def test_resource_from_descriptor_with_class_datatype():
     assert resource.type == "table"
     assert resource.datatype == "table"
     assert isinstance(resource, resources.TableResource)
+
+
+def test_schema_resource_with_path_property():
+    # Non regression test for issue #1688
+    schema_descriptor = {
+        "name": "schema",
+        "path": "abc",
+        "fields": [],
+    }
+    resource = Resource(schema_descriptor, datatype="schema")
+    assert resource.type == "json"
+    assert resource.datatype == "schema"
+    assert isinstance(resource, SchemaResource)

frictionless/resource/factory.py

@@ -45,7 +45,13 @@ def __call__(
             path = source
             if isinstance(source, str):
                 path = helpers.join_basepath(source, basepath=basepath)
-            md_type = Detector.detect_metadata_type(path, format=options.get("format"))
+
+            md_type = options.get("datatype")
+            if not md_type:
+                md_type = Detector.detect_metadata_type(
+                    path, format=options.get("format")
+                )
+
             if md_type != "resource":
                 options["path" if isinstance(source, str) else "data"] = source
                 resource = cls(control=control, basepath=basepath, **options)  # type: ignore