scope.vimspec

Describe vimspec-style
  Describe supports lexical scope
    let test_var_1 = 1

    It can access to the variable
      Assert True(exists('test_var_1'))
      Assert Equals(test_var_1, 1)
    End

    It does not taint the global scope
      Assert False(exists('g:test_var_1'))
    End

    Context in the child block
      It can access to the variable
        Assert True(exists('test_var_1'))
        Assert Equals(test_var_1, 1)
      End
    End

    Context in before block
      Before
        let test_var_1 = 5
      End
      It can change the variable
        Assert True(exists('test_var_1'))
        Assert Equals(test_var_1, 5)
      End
    End

    Context in before each block
      let inc = 0

      Before each
        let inc += 1
      End

      It is shared the scope (first)
        Assert True(exists('inc'))
        Assert Equals(inc, 1)
      End

      It is shared the scope (second)
        Assert True(exists('inc'))
        Assert Equals(inc, 2)
      End

      It is shared the scope (third)
        Assert True(exists('inc'))
        Assert Equals(inc, 3)
      End
    End
  End
End