Rewrite specs to not start local dev servers

They cause flakies when different tests start them in parallel, and also
make the specs more complicated.

spec/bundler/install/gems/dependency_api_fallback_spec.rb

@@ -3,44 +3,16 @@
 RSpec.describe "gemcutter's dependency API" do
   context "when Gemcutter API takes too long to respond" do
     before do
-      require_rack_test
-
-      port = find_unused_port
-      @server_uri = "http://127.0.0.1:#{port}"
-
-      require_relative "../../support/artifice/endpoint_timeout"
-      require_relative "../../support/silent_logger"
-
-      require "rackup/server"
-
-      @t = Thread.new do
-        server = Rackup::Server.start(app: EndpointTimeout,
-                                      Host: "0.0.0.0",
-                                      Port: port,
-                                      server: "webrick",
-                                      AccessLog: [],
-                                      Logger: Spec::SilentLogger.new)
-        server.start
-      end
-      @t.run
-
-      wait_for_server("127.0.0.1", port)
       bundle "config set timeout 1"
     end
 
-    after do
-      Artifice.deactivate
-      @t.kill
-      @t.join
-    end
-
     it "times out and falls back on the modern index" do
-      install_gemfile <<-G, artifice: nil, env: { "BUNDLER_SPEC_GEM_REPO" => gem_repo1.to_s }
+      install_gemfile <<-G, artifice: "endpoint_timeout"
-        source "#{@server_uri}"
+        source "https://gem.repo1"
         gem "myrack"
       G
 
-      expect(out).to include("Fetching source index from #{@server_uri}/")
+      expect(out).to include("Fetching source index from https://gem.repo1/")
       expect(the_bundle).to include_gems "myrack 1.0.0"
     end
   end

spec/bundler/install/gems/gemfile_source_header_spec.rb

@@ -2,53 +2,23 @@
 
 RSpec.describe "fetching dependencies with a mirrored source" do
   let(:mirror) { "https://server.example.org" }
-  let(:original) { "http://127.0.0.1:#{@port}" }
 
   before do
-    setup_server
+    build_repo2
-    bundle "config set --local mirror.#{mirror} #{original}"
-  end
 
-  after do
-    Artifice.deactivate
-    @t.kill
-    @t.join
-  end
-
-  it "sets the 'X-Gemfile-Source' and 'User-Agent' headers and bundles successfully" do
     gemfile <<-G
       source "#{mirror}"
       gem 'weakling'
     G
 
-    bundle :install, artifice: nil
+    bundle "config set --local mirror.#{mirror} https://gem.repo2"
+  end
+
+  it "sets the 'X-Gemfile-Source' and 'User-Agent' headers and bundles successfully" do
+    bundle :install, artifice: "endpoint_mirror_source"
 
     expect(out).to include("Installing weakling")
     expect(out).to include("Bundle complete")
     expect(the_bundle).to include_gems "weakling 0.0.3"
   end
-
-  private
-
-  def setup_server
-    require_rack_test
-    @port = find_unused_port
-    @server_uri = "http://127.0.0.1:#{@port}"
-
-    require_relative "../../support/artifice/endpoint_mirror_source"
-    require_relative "../../support/silent_logger"
-
-    require "rackup/server"
-
-    @t = Thread.new do
-      Rackup::Server.start(app: EndpointMirrorSource,
-                           Host: "0.0.0.0",
-                           Port: @port,
-                           server: "webrick",
-                           AccessLog: [],
-                           Logger: Spec::SilentLogger.new)
-    end.run
-
-    wait_for_server("127.0.0.1", @port)
-  end
 end

spec/bundler/support/helpers.rb

@@ -514,26 +514,6 @@ module Spec
       ENV["GEM_HOME"] = old_gem_home
     end
 
-    def wait_for_server(host, port, seconds = 15)
-      tries = 0
-      sleep 0.5
-      TCPSocket.new(host, port)
-    rescue StandardError => e
-      raise(e) if tries > (seconds * 2)
-      tries += 1
-      retry
-    end
-
-    def find_unused_port
-      port = 21_453
-      begin
-        port += 1 while TCPSocket.new("127.0.0.1", port)
-      rescue StandardError
-        false
-      end
-      port
-    end
-
     def exit_status_for_signal(signal_number)
       # For details see: https://en.wikipedia.org/wiki/Exit_status#Shell_and_scripts
       128 + signal_number

spec/bundler/support/silent_logger.rb

@@ -1,10 +0,0 @@
-# frozen_string_literal: true
-
-require "webrick"
-module Spec
-  class SilentLogger < WEBrick::BasicLog
-    def initialize(log_file = nil, level = nil)
-      super(log_file, level || FATAL)
-    end
-  end
-end

tool/bundler/test_gems.rb

@@ -3,8 +3,6 @@
 source "https://rubygems.org"
 
 gem "rack", "~> 3.1"
-gem "rackup", "~> 2.1"
-gem "webrick", "~> 1.9"
 gem "rack-test", "~> 2.1"
 gem "compact_index", "~> 0.15.0"
 gem "sinatra", "~> 4.1"

tool/bundler/test_gems.rb.lock

@@ -18,8 +18,6 @@ GEM
       rack (>= 3.0.0)
     rack-test (2.2.0)
       rack (>= 1.3)
-    rackup (2.2.1)
-      rack (>= 3)
     rake (13.3.0)
     rake-compiler-dock (1.9.1)
     rb_sys (0.9.111)
@@ -35,7 +33,6 @@ GEM
       rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
     tilt (2.6.0)
-    webrick (1.9.1)
 
 PLATFORMS
   java
@@ -51,12 +48,10 @@ DEPENDENCIES
   fiddle
   rack (~> 3.1)
   rack-test (~> 2.1)
-  rackup (~> 2.1)
   rake (~> 13.1)
   rb_sys
   rubygems-generate_index (~> 1.1)
   sinatra (~> 4.1)
-  webrick (~> 1.9)
 
 CHECKSUMS
   base64 (0.2.0) sha256=0f25e9b21a02a0cc0cea8ef92b2041035d39350946e8789c562b2d1a3da01507
@@ -69,7 +64,6 @@ CHECKSUMS
   rack-protection (4.1.1) sha256=51a254a5d574a7f0ca4f0672025ce2a5ef7c8c3bd09c431349d683e825d7d16a
   rack-session (2.1.0) sha256=437c3916535b58ef71c816ce4a2dee0a01c8a52ae6077dc2b6cd19085760a290
   rack-test (2.2.0) sha256=005a36692c306ac0b4a9350355ee080fd09ddef1148a5f8b2ac636c720f5c463
-  rackup (2.2.1) sha256=f737191fd5c5b348b7f0a4412a3b86383f88c43e13b8217b63d4c8d90b9e798d
   rake (13.3.0) sha256=96f5092d786ff412c62fde76f793cc0541bd84d2eb579caa529aa8a059934493
   rake-compiler-dock (1.9.1) sha256=e73720a29aba9c114728ce39cc0d8eef69ba61d88e7978c57bac171724cd4d53
   rb_sys (0.9.111) sha256=65822fd8d57c248cd893db0efe01bc6edc15fcbea3ba6666091e35430c1cbaf0
@@ -77,7 +71,6 @@ CHECKSUMS
   rubygems-generate_index (1.1.3) sha256=3571424322666598e9586a906485e1543b617f87644913eaf137d986a3393f5c
   sinatra (4.1.1) sha256=4e997b859aa1b5d2e624f85d5b0fd0f0b3abc0da44daa6cbdf10f7c0da9f4d00
   tilt (2.6.0) sha256=263d748466e0d83e510aa1a2e2281eff547937f0ef06be33d3632721e255f76b
-  webrick (1.9.1) sha256=b42d3c94f166f3fb73d87e9b359def9b5836c426fc8beacf38f2184a21b2a989
 
 BUNDLED WITH
    2.7.0.dev