1 files changed, 22 insertions, 0 deletions
diff --git a/xpcom/tests/unit/test_windows_cmdline_file.js b/xpcom/tests/unit/test_windows_cmdline_file.js
new file mode 100644
index 0000000000..318f93ebec
--- /dev/null
+++ b/xpcom/tests/unit/test_windows_cmdline_file.js
@@ -0,0 +1,22 @@
+let executableFile = Services.dirsvc.get("CurProcD", Ci.nsIFile);
+executableFile.append("xpcshell.exe");
+function run_test() {
+  let quote = '"'; // Windows' cmd processor doesn't actually use single quotes.
+  for (let suffix of ["", " -osint", ` --blah "%PROGRAMFILES%"`]) {
+    let cmdline = quote + executableFile.path + quote + suffix;
+    info(`Testing with ${cmdline}`);
+    let f = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFileWin);
+    f.initWithCommandLine(cmdline);
+    Assert.equal(
+      f.path,
+      executableFile.path,
+      "Should be able to recover executable path"
+    );
+  }
+
+  let f = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFileWin);
+  f.initWithCommandLine("%ComSpec% -c echo 'hi'");
+  let cmd = Services.dirsvc.get("SysD", Ci.nsIFile);
+  cmd.append("cmd.exe");
+  Assert.equal(f.path, cmd.path, "Should be able to replace env vars.");
+}