chore: use env for windows and linux

Just updates windows and linux to use PD env API instead of os.platform(), so that
it is consistent with mac. Tests mock to mac for now, as they're not doing anything
dependent on execution OS.

Fixes #1207.

Signed-off-by: Tim deBoer <[email protected]>

Author: deboer-tim

packages/backend/src/machine-utils.spec.ts

@@ -1,5 +1,5 @@
 /**********************************************************************
- * Copyright (C) 2024 Red Hat, Inc.
+ * Copyright (C) 2024-2025 Red Hat, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,6 +51,11 @@ vi.mock('@podman-desktop/api', async () => {
         };
       },
     },
+    env: {
+      isMac: true,
+      isLinux: false,
+      isWindows: false,
+    },
     process: {
       exec: vi.fn(),
     },

packages/backend/src/machine-utils.ts

@@ -1,5 +1,5 @@
 /**********************************************************************
- * Copyright (C) 2024 Red Hat, Inc.
+ * Copyright (C) 2024-2025 Red Hat, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -165,14 +165,12 @@ function getCustomBinaryPath(): string | undefined {
   return extensionApi.configuration.getConfiguration('podman').get('binary.path');
 }
 
-const windows = os.platform() === 'win32';
 export function isWindows(): boolean {
-  return windows;
+  return env.isWindows;
 }
 
-const linux = os.platform() === 'linux';
 export function isLinux(): boolean {
-  return linux;
+  return env.isLinux;
 }
 
 export function isMac(): boolean {