stdout is not a tty. Using bash for node + tape + tap-spec

Just to add my case, I was facing similar issue. Neither solution of using winpty did help, thus I used different hint on using node.exe instead of node when running a script (from Git bash in my case).

not working:

node myscript.js < some-input.txt > some-output.txt

working:

node.exe myscript.js < some-input.txt > some-output.txt

Diagnose :

Theres nothing wrong with the code, I get the following output : (OS : ArchLinux)

  add: two numbers add correctly

    ✔ should be equal


  total:     1
  passing:   1
  duration:  14ms

Its probably a problem with Windows 7 Git Bash Shell

I read somewhere : sending output through a pipe is broken with Git Bash

To discard it run the following command :

node -p -e "Boolean(process.stdout.isTTY)"

For it to work you need the following output : true

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Solution (for Windows):

$ node -p -e "Boolean(process.stdout.isTTY)"
false

Using the winpty tool, it creates a hidden console and marshals I/O between it and Cygwin/GitBashshell emulated pty :

$ winpty node -p -e "Boolean(process.stdout.isTTY)"
true

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READ MORE : Node.js doesn't run as tty on windows / cygwin Issue#3006