Tests fail on macOS/Linux

[andrewbranch]

This is what I get on my machine:

  ● option_empty_argv

    expect(received).toEqual(expected) // deep equality

    Expected: "/Users/anbranc/Developer/microsoft/TS-transform-project/C:\\TSuser\\src\\tsconfig.json"
    Received: "/Users/anbranc/Developer/microsoft/TS-transform-project/C:\\TSuser\\src/tsconfig.json"

Both the expected and received look fishy to me. We should probably avoid hard-coding Windows-style paths into tests as they’ll behave differently on different OSes.

[andrewbranch]

This is fixed