More test fixes for Windows.

Author: jsirois

tests/test_main.py

@@ -50,7 +50,7 @@ def get_output(
 ):
     # type: (...) -> Text
     process = subprocess.Popen(
-        args=args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kwargs
+        args=[sys.executable] + args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, **kwargs
     )
     output, _ = process.communicate()
     decoded_output = output.decode("utf8")
@@ -63,7 +63,7 @@ def assert_version(
     expected_version,  # type: str
 ):
     # type: (...) -> None
-    output = get_output(args=[sys.executable] + args + ["--version"])
+    output = get_output(args=args + ["--version"])
     assert expected_version == output.strip()
 
 
@@ -88,7 +88,7 @@ def test_conscript(foo_bar_conscript):
         if sys.version_info[:2] < (3, 14)
         # N.B.: Python 3.14 changed how prog is calculated.
         # For zipapps, its `sys.executable <zip>`.
-        else "python3.{minor} {zipapp}".format(minor=sys.version_info[1], zipapp=foo_bar_conscript)
+        else "python {zipapp}".format(zipapp=foo_bar_conscript)
     )
     usage_line = "usage: {argv0} [-h] [-V]".format(argv0=argv0)
 
@@ -181,7 +181,7 @@ def test_busybox(foo_bar_conscript):
 def test_repl(foo_bar_conscript):
     # type: (str) -> Any
     process = subprocess.Popen(
-        args=[foo_bar_conscript],
+        args=[sys.executable, foo_bar_conscript],
         stdin=subprocess.PIPE,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,