Convert Homebrew::Hooks::Bottles test to spec.

Library/Homebrew/test/bottle_hooks_spec.rb

+require "formula_installer"
+require "hooks/bottles"
+
+RSpec::Matchers.alias_matcher :pour_bottle, :be_pour_bottle
+
+describe Homebrew::Hooks::Bottles do
+  subject { FormulaInstaller.new formula }
+
+  let(:formula) do
+    double(
+      bottle: nil,
+      local_bottle_path: nil,
+      bottle_disabled?: false,
+      some_random_method: true,
+    )
+  end
+
+  after(:each) do
+    described_class.reset_hooks
+  end
+
+  describe "#setup_formula_has_bottle" do
+    context "given a block which evaluates to true" do
+      before(:each) do
+        described_class.setup_formula_has_bottle(&:some_random_method)
+      end
+
+      it { is_expected.to pour_bottle }
+    end
+
+    context "given a block which evaluates to false" do
+      before(:each) do
+        described_class.setup_formula_has_bottle { |f| !f.some_random_method }
+      end
+
+      it { is_expected.not_to pour_bottle }
+    end
+  end
+
+  describe "#setup_pour_formula_bottle" do
+    before(:each) do
+      described_class.setup_formula_has_bottle { true }
+      described_class.setup_pour_formula_bottle(&:some_random_method)
+    end
+
+    it "does not raise an error" do
+      expect { subject.pour }.not_to raise_error
+    end
+  end
+end

Library/Homebrew/test/bottle_hooks_test.rb

-require "testing_env"
-require "formula_installer"
-require "hooks/bottles"
-
-class BottleHookTests < Homebrew::TestCase
-  class FormulaDouble
-    def bottle; end
-    def local_bottle_path; end
-
-    def bottle_disabled?
-      false
-    end
-
-    def some_random_method
-      true
-    end
-  end
-
-  def setup
-    super
-    @fi = FormulaInstaller.new FormulaDouble.new
-  end
-
-  def test_has_bottle
-    Homebrew::Hooks::Bottles.setup_formula_has_bottle(&:some_random_method)
-    assert_predicate @fi, :pour_bottle?
-  end
-
-  def test_has_no_bottle
-    Homebrew::Hooks::Bottles.setup_formula_has_bottle do |f|
-      !f.some_random_method
-    end
-    refute_predicate @fi, :pour_bottle?
-  end
-
-  def test_pour_formula_bottle
-    Homebrew::Hooks::Bottles.setup_formula_has_bottle do |_f|
-      true
-    end
-
-    Homebrew::Hooks::Bottles.setup_pour_formula_bottle(&:some_random_method)
-    @fi.pour
-  end
-
-  def teardown
-    Homebrew::Hooks::Bottles.reset_hooks
-    super
-  end
-end