Use scoped RSpec matchers.

Library/Homebrew/build_environment.rb

@@ -22,13 +22,13 @@ class BuildEnvironment
   def userpaths?
     @settings.include? :userpaths
   end
-end
 
-module BuildEnvironmentDSL
+  module DSL
     def env(*settings)
       @env ||= BuildEnvironment.new
       @env.merge(settings)
     end
+  end
 end
 
 module Homebrew

Library/Homebrew/formula.rb

@@ -1997,7 +1997,7 @@ class Formula
 
   # The methods below define the formula DSL.
   class << self
-    include BuildEnvironmentDSL
+    include BuildEnvironment::DSL
 
     # The reason for why this software is not linked (by default) to
     # {::HOMEBREW_PREFIX}.

Library/Homebrew/requirement.rb

@@ -159,7 +159,7 @@ class Requirement
   end
 
   class << self
-    include BuildEnvironmentDSL
+    include BuildEnvironment::DSL
 
     attr_reader :env_proc, :build
     attr_rw :fatal, :default_formula

Library/Homebrew/test/bash_spec.rb

@@ -1,6 +1,7 @@
 require "open3"
 
-RSpec::Matchers.define :have_valid_bash_syntax do
+describe "Bash" do
+  matcher :have_valid_bash_syntax do
     match do |file|
       stdout, stderr, status = Open3.capture3("/bin/bash", "-n", file)
 
@@ -12,9 +13,8 @@ RSpec::Matchers.define :have_valid_bash_syntax do
     failure_message do |(file, stderr)|
       "expected that #{file} is a valid Bash file:\n#{stderr}"
     end
-end
+  end
 
-describe "Bash" do
   context "brew" do
     subject { HOMEBREW_LIBRARY_PATH.parent.parent/"bin/brew" }
     it { is_expected.to have_valid_bash_syntax }

Library/Homebrew/test/bottle_hooks_spec.rb

@@ -1,9 +1,9 @@
 require "formula_installer"
 require "hooks/bottles"
 
-RSpec::Matchers.alias_matcher :pour_bottle, :be_pour_bottle
-
 describe Homebrew::Hooks::Bottles do
+  alias_matcher :pour_bottle, :be_pour_bottle
+
   subject { FormulaInstaller.new formula }
 
   let(:formula) do

Library/Homebrew/test/build_environment_spec.rb

@@ -1,8 +1,8 @@
 require "build_environment"
 
-RSpec::Matchers.alias_matcher :use_userpaths, :be_userpaths
-
 describe BuildEnvironment do
+  alias_matcher :use_userpaths, :be_userpaths
+
   let(:env) { described_class.new }
 
   describe "#<<" do
@@ -38,9 +38,8 @@ describe BuildEnvironment do
       expect(env).not_to use_userpaths
     end
   end
-end
 
-describe BuildEnvironmentDSL do
+  describe BuildEnvironment::DSL do
     subject { double.extend(described_class) }
 
     context "single argument" do
@@ -63,4 +62,5 @@ describe BuildEnvironmentDSL do
       its(:env) { is_expected.to be_std }
       its(:env) { is_expected.to use_userpaths }
     end
+  end
 end

Library/Homebrew/test/build_options_spec.rb

@@ -1,10 +1,10 @@
 require "build_options"
 require "options"
 
-RSpec::Matchers.alias_matcher :be_built_with, :be_with
-RSpec::Matchers.alias_matcher :be_built_without, :be_without
-
 describe BuildOptions do
+  alias_matcher :be_built_with, :be_with
+  alias_matcher :be_built_without, :be_without
+
   subject { described_class.new(args, opts) }
   let(:bad_build) { described_class.new(bad_args, opts) }
   let(:args) { Options.create(%w[--with-foo --with-bar --without-qux]) }

Library/Homebrew/test/compiler_failure_spec.rb

@@ -1,8 +1,8 @@
 require "compilers"
 
-RSpec::Matchers.alias_matcher :fail_with, :be_fails_with
-
 describe CompilerFailure do
+  alias_matcher :fail_with, :be_fails_with
+
   describe "::create" do
     it "creates a failure when given a symbol" do
       failure = described_class.create(:clang)

Library/Homebrew/test/dependable_spec.rb

@@ -1,8 +1,8 @@
 require "dependable"
 
-RSpec::Matchers.alias_matcher :be_a_build_dependency, :be_build
-
 describe Dependable do
+  alias_matcher :be_a_build_dependency, :be_build
+
   subject { double(tags: tags).extend(described_class) }
   let(:tags) { ["foo", "bar", :build] }
 

Library/Homebrew/test/dependency_collector_spec.rb

@@ -1,8 +1,8 @@
 require "dependency_collector"
 
-RSpec::Matchers.alias_matcher :be_a_build_requirement, :be_build
-
 describe DependencyCollector do
+  alias_matcher :be_a_build_requirement, :be_build
+
   def find_dependency(name)
     subject.deps.find { |dep| dep.name == name }
   end

Library/Homebrew/test/dependency_spec.rb

@@ -1,9 +1,9 @@
 require "dependency"
 
-RSpec::Matchers.alias_matcher :be_a_build_dependency, :be_build
-RSpec::Matchers.alias_matcher :be_a_runtime_dependency, :be_run
-
 describe Dependency do
+  alias_matcher :be_a_build_dependency, :be_build
+  alias_matcher :be_a_runtime_dependency, :be_run
+
   describe "::new" do
     it "accepts a single tag" do
       dep = described_class.new("foo", %w[bar])

Library/Homebrew/test/dev-cmd/audit_spec.rb

@@ -1,10 +1,6 @@
 require "dev-cmd/audit"
 require "formulary"
 
-RSpec::Matchers.alias_matcher :have_data, :be_data
-RSpec::Matchers.alias_matcher :have_end, :be_end
-RSpec::Matchers.alias_matcher :have_trailing_newline, :be_trailing_newline
-
 module Count
   def self.increment
     @count ||= 0
@@ -13,6 +9,10 @@ module Count
 end
 
 describe FormulaText do
+  alias_matcher :have_data, :be_data
+  alias_matcher :have_end, :be_end
+  alias_matcher :have_trailing_newline, :be_trailing_newline
+
   let(:dir) { mktmpdir }
 
   def formula_text(name, body = nil, options = {})

Library/Homebrew/test/formula_installer_bottle_spec.rb

@@ -5,9 +5,9 @@ require "tab"
 require "test/support/fixtures/testball"
 require "test/support/fixtures/testball_bottle"
 
-RSpec::Matchers.alias_matcher :pour_bottle, :be_pour_bottle
-
 describe FormulaInstaller do
+  alias_matcher :pour_bottle, :be_pour_bottle
+
   matcher :be_poured_from_bottle do
     match(&:poured_from_bottle)
   end

Library/Homebrew/test/formula_installer_spec.rb

@@ -5,10 +5,10 @@ require "tab"
 require "test/support/fixtures/testball"
 require "test/support/fixtures/testball_bottle"
 
-RSpec::Matchers.define_negated_matcher :need_bottle, :be_bottle_unneeded
-RSpec::Matchers.alias_matcher :have_disabled_bottle, :be_bottle_disabled
-
 describe FormulaInstaller do
+  define_negated_matcher :need_bottle, :be_bottle_unneeded
+  alias_matcher :have_disabled_bottle, :be_bottle_disabled
+
   matcher :be_poured_from_bottle do
     match(&:poured_from_bottle)
   end

Library/Homebrew/test/formula_spec.rb

@@ -1,19 +1,19 @@
 require "test/support/fixtures/testball"
 require "formula"
 
-RSpec::Matchers.alias_matcher :follow_installed_alias, :be_follow_installed_alias
-RSpec::Matchers.alias_matcher :have_any_version_installed, :be_any_version_installed
-RSpec::Matchers.alias_matcher :need_migration, :be_migration_needed
-
-RSpec::Matchers.alias_matcher :have_changed_installed_alias_target, :be_installed_alias_target_changed
-RSpec::Matchers.alias_matcher :supersede_an_installed_formula, :be_supersedes_an_installed_formula
-RSpec::Matchers.alias_matcher :have_changed_alias, :be_alias_changed
-
-RSpec::Matchers.alias_matcher :have_option_defined, :be_option_defined
-RSpec::Matchers.alias_matcher :have_test_defined, :be_test_defined
-RSpec::Matchers.alias_matcher :pour_bottle, :be_pour_bottle
-
 describe Formula do
+  alias_matcher :follow_installed_alias, :be_follow_installed_alias
+  alias_matcher :have_any_version_installed, :be_any_version_installed
+  alias_matcher :need_migration, :be_migration_needed
+
+  alias_matcher :have_changed_installed_alias_target, :be_installed_alias_target_changed
+  alias_matcher :supersede_an_installed_formula, :be_supersedes_an_installed_formula
+  alias_matcher :have_changed_alias, :be_alias_changed
+
+  alias_matcher :have_option_defined, :be_option_defined
+  alias_matcher :have_test_defined, :be_test_defined
+  alias_matcher :pour_bottle, :be_pour_bottle
+
   describe "::new" do
     let(:klass) do
       Class.new(described_class) do

Library/Homebrew/test/os/mac/dependency_collector_spec.rb

@@ -1,8 +1,8 @@
 require "dependency_collector"
 
-RSpec::Matchers.alias_matcher :need_tar_xz_dependency, :be_tar_needs_xz_dependency
-
 describe DependencyCollector do
+  alias_matcher :need_tar_xz_dependency, :be_tar_needs_xz_dependency
+
   after(:each) do
     described_class.clear_cache
   end

Library/Homebrew/test/requirement_spec.rb

@@ -1,10 +1,10 @@
 require "extend/ENV"
 require "requirement"
 
-RSpec::Matchers.alias_matcher :have_a_default_formula, :be_a_default_formula
-RSpec::Matchers.alias_matcher :be_a_build_requirement, :be_a_build
-
 describe Requirement do
+  alias_matcher :have_a_default_formula, :be_a_default_formula
+  alias_matcher :be_a_build_requirement, :be_a_build
+
   subject { klass.new }
 
   let(:klass) { Class.new(described_class) }

Library/Homebrew/test/sandbox_spec.rb

@@ -1,8 +1,8 @@
 require "sandbox"
 
-RSpec::Matchers.define_negated_matcher :not_matching, :matching
-
 describe Sandbox do
+  define_negated_matcher :not_matching, :matching
+
   let(:dir) { mktmpdir }
   let(:file) { dir/"foo" }
 

Library/Homebrew/test/software_spec_spec.rb

@@ -1,9 +1,9 @@
 require "software_spec"
 
-RSpec::Matchers.alias_matcher :have_defined_resource, :be_resource_defined
-RSpec::Matchers.alias_matcher :have_defined_option, :be_option_defined
-
 describe SoftwareSpec do
+  alias_matcher :have_defined_resource, :be_resource_defined
+  alias_matcher :have_defined_option, :be_option_defined
+
   let(:owner) { double(name: "some_name", full_name: "some_name", tap: "homebrew/core") }
 
   describe "#resource" do

Library/Homebrew/test/tab_spec.rb

@@ -1,9 +1,9 @@
 require "tab"
 require "formula"
 
-RSpec::Matchers.alias_matcher :be_built_with, :be_with
-
 describe Tab do
+  alias_matcher :be_built_with, :be_with
+
   matcher :be_poured_from_bottle do
     match do |actual|
       actual.poured_from_bottle == true

Library/Homebrew/test/tap_spec.rb

@@ -1,9 +1,9 @@
-RSpec::Matchers.alias_matcher :have_formula_file, :be_formula_file
-RSpec::Matchers.alias_matcher :have_custom_remote, :be_custom_remote
-
 describe Tap do
   include FileUtils
 
+  alias_matcher :have_formula_file, :be_formula_file
+  alias_matcher :have_custom_remote, :be_custom_remote
+
   subject { described_class.new("Homebrew", "foo") }
   let(:path) { Tap::TAP_DIRECTORY/"homebrew/homebrew-foo" }
   let(:formula_file) { path/"Formula/foo.rb" }