[build] Run hsimple.py tutorial first to produce needed file

hist015_TH1_read_and_draw.py and hist015_TH1_read_and_draw_uhi.py need py-hsimple.root produced by hsimple.py, so run that first when testing the wheel.

Also explicitly specify cwd argument to subprocess.open, so that the other tutorials can find the required file.

Author: vepadulano

test/wheels/test_tutorials.py

@@ -30,7 +30,9 @@
 # ----------------------
 # Python tutorials tests
 # ----------------------
-py_tutorials = []
+# Prepend hsimple.py to execute it first, hist015_TH1_read_and_draw.py and hist015_TH1_read_and_draw_uhi.py need the
+# file produced by this tutorial
+py_tutorials = [tutorial_dir / "hsimple.py"]
 for sub in subdirs:
     sub_path = tutorial_dir / sub
     for f in sub_path.rglob("*.py"):
@@ -60,6 +62,7 @@ def test_tutorial(tutorial):
             timeout=60,
             capture_output=True,
             text=True,
+            cwd=tutorial_dir
         )
         print("Test stderr:", result.stderr)
 
@@ -102,6 +105,7 @@ def test_cpp_tutorial(tutorial):
             timeout=60,
             capture_output=True,
             text=True,
+            cwd=tutorial_dir
         )
         print("Test stderr:", result.stderr)