require 'spec_helper'
require 'albacore/cross_platform_cmd'
require 'albacore/errors/command_not_found_error'
require 'albacore/errors/command_failed_error'

describe Albacore::CrossPlatformCmd.method(:which), "what happens when calling #which" do
  it "should be callable" do
    expect(subject).to respond_to(:call)
  end
  it "should return a non-null path" do
    expect(subject.call("ruby")).to_not be_empty
  end
  it "should return its input if given an absolute path to an executable that exists" do
    pathToRuby = subject.call("ruby")
    expect(subject.call(pathToRuby)).to eq(pathToRuby)
  end
  it "should return nil if nothing was found" do
    expect(subject.call("notlikelyonsystem")).to be_nil
  end
end

describe Albacore::CrossPlatformCmd.method(:prepare_command) do
  it 'should be callable' do
    expect(subject).to respond_to(:call)
  end
  before :each do
    # noteworthy: escape spaces with backslash!
    @exe, @pars, @printable, @handler = subject.call %w[echo Hello World Goodbye\ World], true
  end
  it "should not return nil for anything" do
    { exe:       @exe,
      pars:      @pars,
      printable: @printable,
      handler:   @handler
    }.each do |kv|
      expect(kv[1]).to_not be_nil
    end
  end
  if Albacore.windows? then
    it 'should not include mono' do
      expect(@exe).to_not include('mono')
    end

    it 'should return first param correctly' do
      expect(@pars[0]).to eq('Hello')
    end
    it 'should return second param correctly' do
      expect(@pars[1]).to eq('World')
    end
    it 'should return third param correctly' do
      expect(@pars[2]).to eq('Goodbye World')
    end
  else
    it 'should include mono' do
      expect(@exe).to include('mono')
    end
    it 'should return first param as "echo"' do
      expect(@pars[0]).to eq('echo')
    end
    it 'should return second param as "Hello"' do
      expect(@pars[1]).to eq('Hello')
    end
    it 'should return third param as "World"' do
      expect(@pars[2]).to eq('World')
    end
    it 'should return fourth param as "Goodbye World"' do
      expect(@pars[3]).to eq('Goodbye World')
    end
  end
end

[:system, :sh, :shie].each do |method|
  describe Albacore::CrossPlatformCmd.method(method), "##{method}" do
    describe 'its positive modes' do
      it "should be callable" do
        expect(subject).to respond_to(:call)
      end
      it "doesn't crash everything when called" do
        expect(subject.call("whoami")).to_not be_nil
      end
    end
    unless method == :shie
      describe 'its failure modes / exit codes' do
        it "should raise Error for nonexisting command" do
          expect { subject.call("nonexistent", :silent => true) }.to raise_error(Albacore::CommandNotFoundError)
        end
        it "should state that the command failed" do
          expect { subject.call("nonexistent") }.to raise_error(
            Albacore::CommandNotFoundError,
            /Command failed with status \(127\) - number 127 in particular means that the operating system could not find the executable:\n  nonexistent/)
        end
        let(:cwd) { File.dirname(__FILE__) }
        let(:runtime) { 'mono' }
        it "should fail with RuntimeError if status is not zero" do
          expect { 
            if ::Rake::Win32.windows?
              subject.call("#{cwd}/support/returnstatus/returnstatus.exe", [45])
            else
              subject.call(runtime, %W[#{cwd}/support/returnstatus/returnstatus.exe 45])
            end
          }.to raise_error(Albacore::CommandFailedError, /Command failed/)
        end
      end
    end
    describe 'its output' do
      let :prefix do 
        folder = File.dirname(__FILE__)
        ::Rake::Win32.windows? ? folder : "mono #{folder}"
      end
      it "should output from echo" do
        res = subject.call("#{prefix}/support/echo/echo.exe this is a test")
        # #system => \r\n$ on windows
        # #sh => \n$ on windows/powershell
        # #shie => \n$ on windows/powershell
        expect(res).to include("this is a test")
      end
    end
  end
end