#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#


require File.join(File.dirname(__FILE__), '..', '..', '/spec_helper.rb')

describe Ohai::System, "plugin erlang" do

  before(:each) do
    @ohai = Ohai::System.new
    @ohai[:languages] = Mash.new    
    @ohai.stub!(:require_plugin).and_return(true)
    @pid = mock("PID", :null_object => true)
    @stdout = mock("STDOUT", :null_object => true)
    @stderr = mock(
      "STDERR", 
      :null_object => true,
      :gets => "Erlang (ASYNC_THREADS,SMP,HIPE) (BEAM) emulator version 5.6.2\n"
    )
    @stdin = mock("STDIN", :null_object => true)
    @ohai.stub!(:popen4).with("erl +V").and_yield(
      @pid, 
      @stdin, 
      @stdout, 
      @stderr
    )
  end
  
  it "should get the erlang version from erl +V" do
    @ohai.should_receive(:popen4).with("erl +V").and_return(true)
    @ohai._require_plugin("erlang")
  end

  it "should close stdin" do
    @stdin.should_receive(:close)
    @ohai._require_plugin("erlang")
  end
  
  it "should read the version data from stderr" do
    @stderr.should_receive(:gets).and_return("Erlang (ASYNC_THREADS,SMP,HIPE) (BEAM) emulator version 5.6.2\n")
    @ohai._require_plugin("erlang")
  end
  
  it "should set languages[:erlang][:version]" do
    @ohai._require_plugin("erlang")
    @ohai.languages[:erlang][:version].should eql("5.6.2")
  end
  
  it "should set languages[:erlang][:options]" do
    @ohai._require_plugin("erlang")
    @ohai.languages[:erlang][:options].should eql(["ASYNC_THREADS", "SMP", "HIPE"])
  end
  
  it "should set languages[:erlang][:emulator]" do
    @ohai._require_plugin("erlang")
    @ohai.languages[:erlang][:emulator].should eql("BEAM")
  end
  
end