flow

tests/test_platform.py

@@ -0,0 +1,32 @@
+"""Tests for flow.core.platform."""
+
+import platform as _platform
+
+import pytest
+
+from flow.core.platform import PlatformInfo, detect_container_runtime, detect_platform
+
+
+def test_detect_platform_returns_platforminfo():
+    info = detect_platform()
+    assert isinstance(info, PlatformInfo)
+    assert info.os in ("linux", "macos")
+    assert info.arch in ("amd64", "arm64")
+    assert info.platform == f"{info.os}-{info.arch}"
+
+
+def test_detect_platform_unsupported_os(monkeypatch):
+    monkeypatch.setattr(_platform, "system", lambda: "FreeBSD")
+    with pytest.raises(RuntimeError, match="Unsupported operating system"):
+        detect_platform()
+
+
+def test_detect_platform_unsupported_arch(monkeypatch):
+    monkeypatch.setattr(_platform, "machine", lambda: "mips")
+    with pytest.raises(RuntimeError, match="Unsupported architecture"):
+        detect_platform()
+
+
+def test_detect_container_runtime_returns_string_or_none():
+    result = detect_container_runtime()
+    assert result is None or result in ("docker", "podman")