require File.dirname(__FILE__) + '/../spec_helper'
require 'mspec/commands/mkspec'


describe "The -c, --constant CONSTANT option" do
  before :each do
    @options = OptionParser.new
    OptionParser.stub!(:new).and_return(@options)
    @script = MkSpec.new
    @config = @script.config
  end

  it "is enabled by #options" do
    @options.stub!(:on)
    @options.should_receive(:on).with("-c", "--constant CONSTANT",
      String, an_instance_of(String))
    @script.options
  end

  it "adds CONSTANT to the list of constants" do
    ["-c", "--constant"].each do |opt|
      @config[:constants] = []
      @script.options [opt, "Object"]
      @config[:constants].should include("Object")
    end
  end
end

describe "The -b, --base DIR option" do
  before :each do
    @options = OptionParser.new
    OptionParser.stub!(:new).and_return(@options)
    @script = MkSpec.new
    @config = @script.config
  end

  it "is enabled by #options" do
    @options.stub!(:on)
    @options.should_receive(:on).with("-b", "--base DIR",
      String, an_instance_of(String))
    @script.options
  end

  it "sets the base directory relative to which the spec directories are created" do
    ["-b", "--base"].each do |opt|
      @config[:base] = nil
      @script.options [opt, "superspec"]
      @config[:base].should == File.expand_path("superspec")
    end
  end
end

describe "The -r, --require LIBRARY option" do
  before :each do
    @options = OptionParser.new
    OptionParser.stub!(:new).and_return(@options)
    @script = MkSpec.new
    @config = @script.config
  end

  it "is enabled by #options" do
    @options.stub!(:on)
    @options.should_receive(:on).with("-r", "--require LIBRARY",
      String, an_instance_of(String))
    @script.options
  end

  it "adds CONSTANT to the list of constants" do
    ["-r", "--require"].each do |opt|
      @config[:requires] = []
      @script.options [opt, "libspec"]
      @config[:requires].should include("libspec")
    end
  end
end

describe MkSpec, "#options" do
  before :each do
    @options = OptionParser.new
    OptionParser.stub!(:new).and_return(@options)
    @script = MkSpec.new
  end

  it "parses the command line options" do
    @options.should_receive(:parse).with(["--this", "and", "--that"])
    @script.options ["--this", "and", "--that"]
  end

  it "parses ARGV unless passed other options" do
    @options.should_receive(:parse).with(ARGV)
    @script.options
  end

  it "prints help and exits if passed an unrecognized option" do
    @script.should_receive(:puts).exactly(3).times
    @script.should_receive(:exit)
    @script.options "--iunknown"
  end
end

describe MkSpec, "#create_directory" do
  before :each do
    @script = MkSpec.new
    @script.config[:base] = "spec"
  end

  it "prints a warning if a file with the directory name exists" do
    File.should_receive(:exist?).and_return(true)
    File.should_receive(:directory?).and_return(false)
    FileUtils.should_not_receive(:mkdir_p)
    @script.should_receive(:puts).with("spec/class already exists and is not a directory.")
    @script.create_directory("Class").should == nil
  end

  it "does nothing if the directory already exists" do
    File.should_receive(:exist?).and_return(true)
    File.should_receive(:directory?).and_return(true)
    FileUtils.should_not_receive(:mkdir_p)
    @script.create_directory("Class").should == "spec/class"
  end

  it "creates the directory if it does not exist" do
    File.should_receive(:exist?).and_return(false)
    FileUtils.should_receive(:mkdir_p).with("spec/class")
    @script.create_directory("Class").should == "spec/class"
  end

  it "creates the directory for a namespaced module if it does not exist" do
    File.should_receive(:exist?).and_return(false)
    FileUtils.should_receive(:mkdir_p).with("spec/struct/tms")
    @script.create_directory("Struct::Tms").should == "spec/struct/tms"
  end
end

describe MkSpec, "#write_requires" do
  before :each do
    @script = MkSpec.new
    @script.config[:base] = "spec"

    @file = mock("file")
    File.stub!(:open).and_yield(@file)
  end

  it "writes the spec_helper require line" do
    @file.should_receive(:puts).with("require File.dirname(__FILE__) + '/../../../spec_helper'")
    @script.write_requires("spec/core/tcejbo", "spec/core/tcejbo/inspect_spec.rb")
  end

  it "writes require lines for each library specified on the command line" do
    @file.stub!(:puts)
    @file.should_receive(:puts).with("require File.dirname(__FILE__) + '/../../../spec_helper'")
    @file.should_receive(:puts).with("require 'complex'")
    @script.config[:requires] << 'complex'
    @script.write_requires("spec/core/tcejbo", "spec/core/tcejbo/inspect_spec.rb")
  end
end

describe MkSpec, "#write_spec" do
  before :each do
    @file = mock("file")
    @file.stub!(:puts)
    File.stub!(:open).and_yield(@file)

    @script = MkSpec.new
    @script.stub!(:puts)

    @response = mock("system command response")
    @response.stub!(:=~).and_return(false)
    @script.stub!(:`).and_return(@response)
  end

  it "checks if specs exist for the method if the spec file exists" do
    @script.should_receive(:`).with(
        /mspec\/bin\/mspec-run --dry-run -fs -e 'Object#inspect' spec\/core\/tcejbo\/inspect_spec.rb/)
    @script.write_spec("spec/core/tcejbo/inspect_spec.rb", "Object#inspect", true)
  end

  it "escapes the Regexp when checking for method name in the spec file output" do
    Regexp.should_receive(:escape).with("Array#[]=")
    @script.write_spec("spec/core/yarra/element_set_spec.rb", "Array#[]=", true)
  end

  it "returns nil if the spec file exists and contains a spec for the method" do
    @response.stub!(:=~).and_return(true)
    @script.write_spec("spec/core/tcejbo/inspect_spec.rb", "Object#inspect", true).should == nil
  end

  it "does not print the spec file name if it exists and contains a spec for the method" do
    @response.stub!(:=~).and_return(true)
    @script.should_not_receive(:puts)
    @script.write_spec("spec/core/tcejbo/inspect_spec.rb", "Object#inspect", true)
  end

  it "prints the spec file name if a template spec is written" do
    @script.should_receive(:puts).with("spec/core/tcejbo/inspect_spec.rb")
    @script.write_spec("spec/core/tcejbo/inspect_spec.rb", "Object#inspect", true)
  end

  it "writes a template spec to the file if the spec file does not exist" do
    @file.should_receive(:puts)
    @script.should_receive(:puts).with("spec/core/tcejbo/inspect_spec.rb")
    @script.write_spec("spec/core/tcejbo/inspect_spec.rb", "Object#inspect", false)
  end

  it "writes a template spec to the file if it exists but contains no spec for the method" do
    @response.should_receive(:=~).and_return(false)
    @file.should_receive(:puts)
    @script.should_receive(:puts).with("spec/core/tcejbo/inspect_spec.rb")
    @script.write_spec("spec/core/tcejbo/inspect_spec.rb", "Object#inspect", true)
  end
end

describe MkSpec, "#create_file" do
  before :each do
    @script = MkSpec.new
    @script.stub!(:write_requires)
    @script.stub!(:write_spec)

    File.stub!(:exist?).and_return(false)
  end

  it "generates a file name based on the directory, class/module, and method" do
    File.should_receive(:join).with("spec/tcejbo", "inspect_spec.rb"
        ).and_return("spec/tcejbo/inspect_spec.rb")
    @script.create_file("spec/tcejbo", "Object", "inspect", "Object#inspect")
  end

  it "does not call #write_requires if the spec file already exists" do
    File.should_receive(:exist?).and_return(true)
    @script.should_not_receive(:write_requires)
    @script.create_file("spec/tcejbo", "Object", "inspect", "Object#inspect")
  end

  it "calls #write_requires if the spec file does not exist" do
    File.should_receive(:exist?).and_return(false)
    @script.should_receive(:write_requires).with(
        "spec/tcejbo", "spec/tcejbo/inspect_spec.rb")
    @script.create_file("spec/tcejbo", "Object", "inspect", "Object#inspect")
  end

  it "calls #write_spec with the file, method name" do
    @script.should_receive(:write_spec).with(
        "spec/tcejbo/inspect_spec.rb", "Object#inspect", false)
    @script.create_file("spec/tcejbo", "Object", "inspect", "Object#inspect")
  end
end

describe MkSpec, "#run" do
  before :each do
    @options = OptionParser.new
    OptionParser.stub!(:new).and_return(@options)

    @map = NameMap.new
    NameMap.stub!(:new).and_return(@map)

    @script = MkSpec.new
    @script.stub!(:create_directory).and_return("spec/mkspec")
    @script.stub!(:create_file)
    @script.config[:constants] = [MkSpec]
  end

  it "loads files in the requires list" do
    @script.stub!(:require)
    @script.should_receive(:require).with("alib")
    @script.should_receive(:require).with("blib")
    @script.config[:requires] = ["alib", "blib"]
    @script.run
  end

  it "creates a map of constants to methods" do
    @map.should_receive(:map).with({}, @script.config[:constants]).and_return({})
    @script.run
  end

  it "creates a map of Object.constants if not constants are specified" do
    @script.config[:constants] = []
    Object.stub!(:constants).and_return(["Object"])
    @map.should_receive(:filter).with(["Object"]).and_return(["Object"])
    @map.should_receive(:map).with({}, ["Object"]).and_return({})
    @script.run
  end

  it "calls #create_directory for each class/module in the map" do
    @script.should_receive(:create_directory).with("MkSpec").twice
    @script.run
  end

  it "calls #create_file for each method on each class/module in the map" do
    @map.should_receive(:map).with({}, @script.config[:constants]).and_return({"MkSpec#" => "run"})
    @script.should_receive(:create_file).with("spec/mkspec", "MkSpec", "run", "MkSpec#run")
    @script.run
  end
end

describe MkSpec, ".main" do
  before :each do
    @script = mock("MkSpec", :null_object => true)
    MkSpec.stub!(:new).and_return(@script)
  end

  it "sets MSPEC_RUNNER = '1' in the environment" do
    ENV["MSPEC_RUNNER"] = "0"
    MkSpec.main
    ENV["MSPEC_RUNNER"].should == "1"
  end

  it "creates an instance of MSpecScript" do
    MkSpec.should_receive(:new).and_return(@script)
    MkSpec.main
  end

  it "calls the #options method on the script" do
    @script.should_receive(:options)
    MkSpec.main
  end

  it "calls the #run method on the script" do
    @script.should_receive(:run)
    MkSpec.main
  end
end