add: unit tests for PowerShell (#78)

.cspell.json

@@ -27,6 +27,7 @@
     "prebuild",
     "pushd",
     "putenv",
+    "pwsh",
     "pypa",
     "pypi",
     "pyproject",

src/ds/runner.py

@@ -47,7 +47,7 @@ def venv_activate_cmd(venv: Path) -> str:
         return f"source {venv / 'bin' / 'activate.csh'};"
     if sys.platform.startswith("linux") or sys.platform.startswith("darwin"):
         if is_powershell:  # POSIX
-            return str(venv / "bin" / "Activate.ps1")
+            return f"source {venv / "bin" / "Activate.ps1"};"
         return default
 
     # no cover: start

test/test_runner.py

@@ -2,6 +2,7 @@
 
 # std
 from pathlib import Path
+import os
 
 # pkg
 from ds.args import Args
@@ -22,11 +23,21 @@ def test_venv_activate() -> None:
         assert venv_activate_cmd(venv) == "source .venv/bin/activate.csh;"
     with TempEnv(SHELL="/bin/fish"):
         assert venv_activate_cmd(venv) == "source .venv/bin/activate.fish;"
-
-    # handle unknown linux / macOS shell
-    with TempEnv(SHELL="/bin/unknown"):
+    with TempEnv(SHELL="/bin/unknown"):  # unknown POSIX
         assert venv_activate_cmd(venv) == "source .venv/bin/activate;"
 
+    # simulate PowerShell
+    # https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_psmodulepath?view=powershell-7.4
+    folders = os.pathsep.join(
+        [
+            "$HOME/.local/share/powershell/Modules",
+            "/usr/local/share/powershell/Modules",
+            "/opt/microsoft/powershell/6/Modules",
+        ]
+    )
+    with TempEnv(SHELL="/usr/bin/pwsh", PSModulePath=folders):
+        assert venv_activate_cmd(venv) == "source .venv/bin/Activate.ps1;"
+
 
 def test_run_composite() -> None:
     """Run a composite test."""