brew/Library/Homebrew/test/caveats_spec.rb

require "formula"
require "caveats"
require "pathname"

describe Caveats do
  subject { described_class.new(f) }
  let(:f) { formula { url "foo-1.0" } }

  specify "#f" do
    expect(subject.f).to eq(f)
  end

  describe "#empty?" do
    it "returns true if the Formula has no caveats" do
      expect(subject).to be_empty
    end

    it "returns false if the Formula has caveats" do
      f = formula do
        url "foo-1.0"

        def caveats
          "something"
        end
      end

      expect(described_class.new(f)).not_to be_empty
    end
  end

  describe "#caveats" do
    context "when f.plist is not nil" do
      it "prints plist startup information when f.plist_startup is not nil" do
        f = formula do
          url "foo-1.0"
          def plist
            "plist_test.plist"
          end
          plist_options startup: true
        end
        expect(described_class.new(f).caveats).to include("startup")
      end

      it "prints plist login information when f.plist_startup is nil" do
        f = formula do
          url "foo-1.0"
          def plist
            "plist_test.plist"
          end
        end
        expect(described_class.new(f).caveats).to include("login")
      end
    end

    context "when f.keg_only is not nil" do
      let(:f) {
        formula do
          url "foo-1.0"
          keg_only "some reason"
        end
      }
      let(:caveats) { described_class.new(f).caveats }

      it "tells formula is keg_only" do
        expect(caveats).to include("keg-only")
      end

      it "gives command to be run when f.bin is a directory" do
        Pathname.new(f.bin).mkpath
        expect(caveats).to include(f.opt_bin.to_s)
      end

      it "gives command to be run when f.sbin is a directory" do
        Pathname.new(f.sbin).mkpath
        expect(caveats).to include(f.opt_sbin.to_s)
      end

      context "when f.lib or f.include is a directory" do
        it "gives command to be run when f.lib is a directory" do
          Pathname.new(f.lib).mkpath
          expect(caveats).to include("-L#{f.opt_lib}")
        end

        it "gives command to be run when f.include is a directory" do
          Pathname.new(f.include).mkpath
          expect(caveats).to include("-I#{f.opt_include}")
        end

        it "gives PKG_CONFIG_PATH when f.lib/'pkgconfig' and f.share/'pkgconfig' are directories" do
          allow_any_instance_of(Object).to receive(:which).with(any_args).and_return(Pathname.new("blah"))

          Pathname.new(f.share/"pkgconfig").mkpath
          Pathname.new(f.lib/"pkgconfig").mkpath

          expect(caveats).to include("#{f.opt_lib}/pkgconfig")
          expect(caveats).to include("#{f.opt_share}/pkgconfig")
        end
      end
    end
  end
end