Ubuntu :: Checking If File In /root Directory Exists?

I want to create a file in the /root directory and then make sure it exists. The following code keeps telling me that the file doesn't exist even though it does.

Code:
#!/bin/bash
echo -e "username=someusername
passwordsomepassword" | sudo tee /root/.credentials
if [ -e /root/.credentials ]; then
echo "File exists!"

[Code]...

[Edit] Added second double quotation mark at the end of "somepassword"