Correct function_ast_spec descriptions.

require "jsduck/js_parser"

require "jsduck/function_ast"

describe "JsDuck::FunctionAst#returns" do

describe "JsDuck::FunctionAst#chainable?" do

  def chainable?(string)

    node = JsDuck::JsParser.new(string).parse[0]

    return JsDuck::FunctionAst.chainable?(node[:code])

  end

  it "fails when no AST given at all" do

  it "false when no AST given at all" do

    chainable?("/** */").should == false

  end

  it "fails when no function AST given" do

  it "false when no function AST given" do

    chainable?("/** */ Ext.emptyFn;").should == false

  end

  it "fails when body has no return statement." do

  it "false when body has no return statement." do

    chainable?("/** */ function foo() {}").should == false

  end

  it "returns this when single return this statement in body" do

  it "true when single RETURN THIS statement in body" do

    chainable?("/** */ function foo() {return this;}").should == true

  end

  it "returns this when return this after a few expression statements" do

  it "true when RETURN THIS after a few expression statements" do

    chainable?(<<-EOJS).should == true

      /** */

      function foo() {

    EOJS

  end

  it "returns this when return this after a few declarations" do

  it "true when RETURN THIS after a few declarations" do

    chainable?(<<-EOJS).should == true

      /** */

      function foo() {