Using the same python executable to run inference tests, rather than system python

tests/inference/extra_model_paths.yaml

@@ -1,4 +1,4 @@
 # Config for testing nodes
 testing:
-    custom_nodes: tests/inference/testing_nodes
+    custom_nodes: testing_nodes
 

tests/inference/test_execution.py

@@ -14,6 +14,10 @@ import urllib.request
 import urllib.parse
 import urllib.error
 from comfy_execution.graph_utils import GraphBuilder, Node
+import os
+import sys
+
+PYTHON_EXECUTABLE_PATH = os.path.realpath(sys.executable)
 
 class RunResult:
     def __init__(self, prompt_id: str):
@@ -125,7 +129,7 @@ class TestExecution:
     def _server(self, args_pytest, request):
         # Start server
         pargs = [
-            'python','main.py',
+            PYTHON_EXECUTABLE_PATH,'main.py',
             '--output-directory', args_pytest["output_dir"],
             '--listen', args_pytest["listen"],
             '--port', str(args_pytest["port"]),

tests/inference/test_inference.py

@@ -14,6 +14,8 @@ import websocket #NOTE: websocket-client (https://github.com/websocket-client/we
 import uuid
 import urllib.request
 import urllib.parse
+import sys
+
 
 
 from comfy.samplers import KSampler
@@ -21,6 +23,7 @@ from comfy.samplers import KSampler
 """
 These tests generate and save images through a range of parameters
 """
+PYTHON_EXECUTABLE_PATH = os.path.realpath(sys.executable)
 
 class ComfyGraph:
     def __init__(self,
@@ -152,7 +155,7 @@ class TestInference:
     def _server(self, args_pytest):
         # Start server
         p = subprocess.Popen([
-                'python','main.py',
+                PYTHON_EXECUTABLE_PATH,'main.py',
                 '--output-directory', args_pytest["output_dir"],
                 '--listen', args_pytest["listen"],
                 '--port', str(args_pytest["port"]),