add py13 to tox envlist

test_xair and test_x32 now run tests with tox

upd Tests section in README

scripts.py

@@ -1,31 +1,35 @@
+import os
 import subprocess
 import sys
 from pathlib import Path
 
 
 def ex_obs():
-    subprocess.run(["tox", "r", "-e", "obs"])
+    subprocess.run(['tox', 'r', '-e', 'obs'])
 
 
 def ex_sends():
-    path = Path.cwd() / "examples" / "sends" / "."
+    path = Path.cwd() / 'examples' / 'sends' / '.'
     subprocess.run([sys.executable, str(path)])
 
 
 def ex_headamp():
-    path = Path.cwd() / "examples" / "headamp" / "."
+    path = Path.cwd() / 'examples' / 'headamp' / '.'
     subprocess.run([sys.executable, str(path)])
 
 
 def test_xair():
-    path = Path.cwd() / "tests" / "xair"
-    subprocess.run(["pytest", "-v", str(path)])
+    subprocess.run(['tox'], env=os.environ.copy() | {'TEST_MODULE': 'xair'})
 
 
 def test_x32():
-    path = Path.cwd() / "tests" / "x32"
-    subprocess.run(["pytest", "-v", str(path)])
+    path = Path.cwd() / 'tools' / 'x32.exe'
+    proc = subprocess.Popen([str(path), '-i', 'x32.local'])
+    subprocess.run(['tox'], env=os.environ.copy() | {'TEST_MODULE': 'x32'})
+    proc.terminate()
 
 
 def test_all():
-    subprocess.run(["tox"])
+    steps = [test_xair, test_x32]
+    for step in steps:
+        step()