brew/Library/Homebrew/test/os/mac/mach_spec.rb

describe "Mach-O Pathname tests" do
  specify "fat dylib" do
    pn = dylib_path("fat")
    expect(pn).to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn.arch).to eq(:universal)
  end

  specify "i386 dylib" do
    pn = dylib_path("i386")
    expect(pn).not_to be_universal
    expect(pn).to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).not_to be_mach_o_bundle
  end

  specify "x86_64 dylib" do
    pn = dylib_path("x86_64")
    expect(pn).not_to be_universal
    expect(pn).not_to be_i386
    expect(pn).to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).not_to be_mach_o_bundle
  end

  specify "Mach-O executable" do
    pn = Pathname.new("#{TEST_FIXTURE_DIR}/mach/a.out")
    expect(pn).to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).not_to be_mach_o_bundle
  end

  specify "fat bundle" do
    pn = bundle_path("fat")
    expect(pn).to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).to be_mach_o_bundle
  end

  specify "i386 bundle" do
    pn = bundle_path("i386")
    expect(pn).not_to be_universal
    expect(pn).to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).to be_mach_o_bundle
  end

  specify "x86_64 bundle" do
    pn = bundle_path("x86_64")
    expect(pn).not_to be_universal
    expect(pn).not_to be_i386
    expect(pn).to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).to be_mach_o_bundle
  end

  specify "non-Mach-O" do
    pn = Pathname.new("#{TEST_FIXTURE_DIR}/tarballs/testball-0.1.tbz")
    expect(pn).not_to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn).not_to be_mach_o_bundle
    expect(pn.arch).to eq(:dunno)
  end
end

describe ArchitectureListExtension do
  let(:archs) { [:i386, :x86_64, :ppc7400, :ppc64].extend(described_class) }

  specify "universal checks" do
    expect(archs).to be_universal

    non_universal = [:i386].extend(described_class)
    expect(non_universal).not_to be_universal

    intel_only = [:i386, :x86_64].extend(described_class)
    expect(intel_only).to be_universal
  end

  specify "architecture flags" do
    pn = dylib_path("fat")
    expect(pn.archs).to be_universal
    expect(pn.archs.as_arch_flags).to eq("-arch x86_64 -arch i386")
  end
end

describe "text executables" do
  let(:pn) { HOMEBREW_PREFIX/"an_executable" }

  after { pn.unlink }

  specify "simple shebang" do
    pn.write "#!/bin/sh"
    expect(pn).not_to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).to be_text_executable
    expect(pn.archs).to eq([])
    expect(pn.arch).to eq(:dunno)
  end

  specify "shebang with options" do
    pn.write "#! /usr/bin/perl -w"
    expect(pn).not_to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).to be_text_executable
    expect(pn.archs).to eq([])
    expect(pn.arch).to eq(:dunno)
  end

  specify "malformed shebang" do
    pn.write " #!"
    expect(pn).not_to be_universal
    expect(pn).not_to be_i386
    expect(pn).not_to be_x86_64
    expect(pn).not_to be_ppc7400
    expect(pn).not_to be_ppc64
    expect(pn).not_to be_dylib
    expect(pn).not_to be_mach_o_executable
    expect(pn).not_to be_text_executable
    expect(pn.archs).to eq([])
    expect(pn.arch).to eq(:dunno)
  end
end