update

tests/fakes.py

@@ -0,0 +1,36 @@
+"""Shared test fixtures."""
+
+from __future__ import annotations
+
+import subprocess
+from typing import Any
+
+from flow.core.runtime import CommandRunner
+
+
+class FakeRunner(CommandRunner):
+    """CommandRunner that captures calls instead of executing.
+
+    Response matching uses keyword containment: a response keyed by
+    ``("ps", "{{.Names}}")`` matches any command whose argv contains
+    both ``"ps"`` and ``"{{.Names}}"``.
+    """
+
+    def __init__(self, responses: dict[tuple[str, ...], Any] | None = None):
+        self.calls: list[list[str]] = []
+        self.timeouts: list[float | None] = []
+        self._responses: dict[tuple[str, ...], Any] = responses or {}
+
+    def run(self, argv, *, cwd=None, env=None, capture_output=True, check=False, timeout=None):
+        parts = list(argv)
+        self.calls.append(parts)
+        self.timeouts.append(timeout)
+        for key, resp in self._responses.items():
+            if all(k in parts for k in key):
+                return resp
+        return subprocess.CompletedProcess(parts, 0, stdout="", stderr="")
+
+    def run_shell(self, command, *, cwd=None, env=None, capture_output=True, check=False, timeout=None):
+        self.calls.append(["__shell__", command])
+        self.timeouts.append(timeout)
+        return subprocess.CompletedProcess(command, 0, stdout="", stderr="")