Fix.

Author: tobiasraabe

tests/test_capture.py

@@ -87,7 +87,7 @@ def task_show_capture():
     """
     tmp_path.joinpath("workflow.py").write_text(textwrap.dedent(source))
 
-    result = run_in_subprocess(("python", "workflow.py"), cwd=tmp_path)
+    result = run_in_subprocess(("uv", "run", "python", "workflow.py"), cwd=tmp_path)
 
     assert result.exit_code == ExitCode.FAILED
 
@@ -128,7 +128,7 @@ def test_wrong_capture_method(tmp_path):
     """
     tmp_path.joinpath("workflow.py").write_text(textwrap.dedent(source))
 
-    result = run_in_subprocess(("python", "workflow.py"), cwd=tmp_path)
+    result = run_in_subprocess(("uv", "run", "python", "workflow.py"), cwd=tmp_path)
     assert result.exit_code == ExitCode.CONFIGURATION_FAILED
     assert "Value 'a' is not a valid" in result.stdout
     assert "Traceback" not in result.stdout
@@ -255,7 +255,7 @@ def task_unicode():
     tmp_path.joinpath("workflow.py").write_text(
         textwrap.dedent(source), encoding="utf-8"
     )
-    result = run_in_subprocess(("python", "workflow.py"), cwd=tmp_path)
+    result = run_in_subprocess(("uv", "run", "python", "workflow.py"), cwd=tmp_path)
     assert result.exit_code == ExitCode.OK
     assert "1  Succeeded" in result.stdout
 

tests/test_dag_command.py

@@ -92,7 +92,10 @@ def main():
     tmp_path.joinpath("input.txt").touch()
 
     result = subprocess.run(
-        ("python", "task_example.py"), cwd=tmp_path, check=True, capture_output=True
+        ("uv", "run", "python", "task_example.py"),
+        cwd=tmp_path,
+        check=True,
+        capture_output=True,
     )
 
     assert result.returncode == ExitCode.OK

tests/test_execute.py

@@ -602,7 +602,8 @@ def create_file(
     """
     tmp_path.joinpath("task_module.py").write_text(textwrap.dedent(source))
     result = subprocess.run(
-        ("python", tmp_path.joinpath("task_module.py").as_posix()), check=False
+        ("uv", "run", "python", tmp_path.joinpath("task_module.py").as_posix()),
+        check=False,
     )
     assert result.returncode == ExitCode.OK
     assert tmp_path.joinpath("file.txt").read_text() == "This is the text."

tests/test_task.py

@@ -667,7 +667,10 @@ def task_second():
     tmp_path.joinpath("task_example.py").write_text(textwrap.dedent(source))
 
     result = subprocess.run(
-        ("python", "task_example.py"), cwd=tmp_path, capture_output=True, check=False
+        ("uv", "run", "python", "task_example.py"),
+        cwd=tmp_path,
+        capture_output=True,
+        check=False,
     )
     assert "2  Succeeded" in result.stdout.decode()
     assert result.returncode == ExitCode.OK