fix: removed exception for vcs root property t

Removing this exception should all for non-standard root directories to work. Closes #522.  I am not sure exactly what this #522 is asking for, please correct me if interpretation was wrong

Author: abhishekmadan30

src/taskgraph/config.py

@@ -11,7 +11,6 @@
 
 from voluptuous import ALLOW_EXTRA, All, Any, Extra, Length, Optional, Required
 
-from .util import path
 from .util.caches import CACHES
 from .util.python_path import find_object
 from .util.schema import Schema, optionally_keyed_by, validate_schema
@@ -151,10 +150,6 @@ def register(self):
 
     @property
     def vcs_root(self):
-        if path.split(self.root_dir)[-1:] != ["taskcluster"]:
-            raise Exception(
-                "Not guessing path to vcs root. Graph config in non-standard location."
-            )
         return os.path.dirname(self.root_dir)
 
     @property

src/taskgraph/parameters.py

@@ -363,10 +363,7 @@ def load_parameters_file(
 
 def parameters_loader(spec, strict=True, overrides=None):
     def get_parameters(graph_config):
-        try:
-            repo_root = graph_config.vcs_root
-        except Exception:
-            repo_root = None
+        repo_root = graph_config.vcs_root
 
         parameters = load_parameters_file(
             spec,

test/test_config.py

@@ -30,3 +30,15 @@ def test_graph_config_basic():
 
     with pytest.raises(TypeError):
         graph_config["baz"] = 2
+
+
+def test_vcs_root_property():
+    """Test the vcs_root property returns the parent directory of root_dir without throwing an exception."""
+
+    # Test with a standard taskcluster directory structure
+    graph_config = GraphConfig({}, "/path/to/project/taskcluster")
+    assert graph_config.vcs_root == "/path/to/project"
+
+    # Test with a different directory structure
+    graph_config = GraphConfig({}, "/path/to/custom/.taskgraph")
+    assert graph_config.vcs_root == "/path/to/custom"