test.mocha.js

var assert = require("assert")

describe("my-module", function(){
  it("should work", function(done){
    assert.equal("foo", "foo")
    done()
  })
  it("should respect type", function(done){
    assert.notStrictEqual("1", 1)
    done()
  })
  it("should throw", function(done){
    assert.throws(function(){
      throw new Error()
    })
    done()
  })
})

/*

1..3
ok 1 my-module should work
ok 2 my-module should respect type
ok 3 my-module should throw
# tests 3
# pass 3
# fail 0

*/

test.tape.js

var tape = require("tape")

tape("my-module", function(test){
  test.equal("foo", "foo", "should work")
  test.notStrictEqual("1", 1, "number and string are distinct")
  test.throws(function(){
    throw new Error()
  })
  test.end()
})

/*

TAP version 13
# my-module
ok 1 should work
ok 2 number and string are distinct
ok 3 should throw

1..3
# tests 3
# pass  3

# ok

*/