Revert "Revert "Test officially supported cmd taps. (#390)""

This reverts commit dba1958b.

Library/Homebrew/cmd/tests.rb

 #: @hide_from_man_page
-#:  * `tests` [`-v`] [`--coverage`] [`--generic`] [`--no-compat`] [`--only=`<test_script/test_method>] [`--seed` <seed>] [`--trace`] [`--online`]:
+#:  * `tests` [`-v`] [`--coverage`] [`--generic`] [`--no-compat`] [`--only=`<test_script/test_method>] [`--seed` <seed>] [`--trace`] [`--online`] [`--official-cmd-taps`]:
 #:    Run Homebrew's unit and integration tests.
 
 require "fileutils"
+require "tap"
 
 module Homebrew
   def tests
+    ENV["HOMEBREW_NO_ANALYTICS_THIS_RUN"] = "1"
+
+    if ARGV.include? "--official-cmd-taps"
+      ENV["HOMEBREW_TEST_OFFICIAL_CMD_TAPS"] = "1"
+      OFFICIAL_CMD_TAPS.each do |tap, _|
+        tap = Tap.fetch tap
+        tap.install unless tap.installed?
+      end
+    end
+
     (HOMEBREW_LIBRARY/"Homebrew/test").cd do
-      ENV["HOMEBREW_NO_ANALYTICS_THIS_RUN"] = "1"
       ENV["TESTOPTS"] = "-v" if ARGV.verbose?
       ENV["HOMEBREW_NO_COMPAT"] = "1" if ARGV.include? "--no-compat"
       ENV["HOMEBREW_TEST_GENERIC_OS"] = "1" if ARGV.include? "--generic"

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

@@ -659,6 +659,7 @@ module Homebrew
         test "brew", "tests", *tests_args
         test "brew", "tests", "--no-compat"
         test "brew", "readall", "--syntax"
+        test "brew", "tests", "--official-cmd-taps"
       else
         test "brew", "readall", "--aliases", @tap.name
       end

Library/Homebrew/global.rb

@@ -9,6 +9,7 @@ require "utils"
 require "exceptions"
 require "set"
 require "rbconfig"
+require "official_taps"
 
 ARGV.extend(HomebrewArgvExtension)
 

Library/Homebrew/official_taps.rb

@@ -15,4 +15,10 @@ OFFICIAL_TAPS = %w[
   tex
   versions
   x11
-]
+].freeze
+
+OFFICIAL_CMD_TAPS = {
+  "caskroom/cask" => ["cask"],
+  "homebrew/bundle" => ["bundle"],
+  "homebrew/services" => ["services"],
+}.freeze

Library/Homebrew/test/test_integration_cmds.rb

@@ -17,6 +17,12 @@ class IntegrationCommandTests < Homebrew::TestCase
     @formula_files.each(&:unlink)
   end
 
+  def needs_test_cmd_taps
+    unless ENV["HOMEBREW_TEST_OFFICIAL_CMD_TAPS"]
+      skip "HOMEBREW_TEST_OFFICIAL_CMD_TAPS is not set"
+    end
+  end
+
   def cmd_id_from_args(args)
     args_pretty = args.join(" ").gsub(TEST_TMPDIR, "@TMPDIR@")
     test_pretty = "#{self.class.name}\##{name}.#{@cmd_id_index += 1}"
@@ -668,4 +674,35 @@ class IntegrationCommandTests < Homebrew::TestCase
   ensure
     desc_cache.unlink
   end
+
+  def test_bundle
+    needs_test_cmd_taps
+    HOMEBREW_REPOSITORY.cd do
+      shutup do
+        system "git", "init"
+        system "git", "commit", "--allow-empty", "-m", "This is a test commit"
+      end
+    end
+
+    mktmpdir do |path|
+      FileUtils.touch "#{path}/Brewfile"
+      Dir.chdir path do
+        assert_equal "The Brewfile's dependencies are satisfied.",
+          cmd("bundle", "check")
+      end
+    end
+  ensure
+    FileUtils.rm_rf HOMEBREW_REPOSITORY/".git"
+  end
+
+  def test_cask
+    needs_test_cmd_taps
+    assert_equal "Warning: nothing to list", cmd("cask", "list")
+  end
+
+  def test_services
+    needs_test_cmd_taps
+    assert_equal "Warning: No services available to control with `brew services`",
+      cmd("services", "list")
+  end
 end

Library/brew.rb

@@ -94,14 +94,8 @@ begin
     exit Homebrew.failed? ? 1 : 0
   else
     require "tap"
-    possible_tap = case cmd
-    when "brewdle", "brewdler", "bundle", "bundler"
-      Tap.fetch("Homebrew", "bundle")
-    when "cask"
-      Tap.fetch("caskroom", "cask")
-    when "services"
-      Tap.fetch("Homebrew", "services")
-    end
+    possible_tap = OFFICIAL_CMD_TAPS.find { |_, cmds| cmds.include?(cmd) }
+    possible_tap = Tap.fetch(possible_tap.first) if possible_tap
 
     if possible_tap && !possible_tap.installed?
       brew_uid = HOMEBREW_BREW_FILE.stat.uid