Merge rubygems master.

This is RC version of Rubygems 2.7.0.
  688fb7e83c

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60133 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/rubygems/test_gem_commands_signin_command.rb

@@ -0,0 +1,95 @@
+# frozen_string_literal: true
+require 'rubygems/test_case'
+require 'rubygems/commands/signin_command'
+require 'rubygems/installer'
+
+class TestGemCommandsSigninCommand < Gem::TestCase
+
+  def setup
+    super
+    
+    Gem.configuration.rubygems_api_key = nil
+    Gem.configuration.api_keys.clear
+    
+    @cmd = Gem::Commands::SigninCommand.new
+  end
+
+  def teardown
+    credentials_path = Gem.configuration.credentials_path
+    File.delete(credentials_path)  if File.exist?(credentials_path)
+    super
+  end
+  
+  def test_execute_when_not_already_signed_in
+    sign_in_ui = util_capture() { @cmd.execute }
+    assert_match %r{Signed in.}, sign_in_ui.output
+  end
+
+  def test_execute_when_already_signed_in_with_same_host
+    host            = 'http://some-gemcutter-compatible-host.org'
+    sign_in_ui      = util_capture(nil, host) { @cmd.execute }
+    old_credentials = YAML.load_file Gem.configuration.credentials_path
+    
+    sign_in_ui      = util_capture(nil, host) { @cmd.execute }
+    new_credentials = YAML.load_file Gem.configuration.credentials_path
+    
+    assert_equal old_credentials[host], new_credentials[host]    
+  end
+
+  def test_execute_when_already_signed_in_with_different_host
+    api_key     = 'a5fdbb6ba150cbb83aad2bb2fede64cf04045xxxx'
+    sign_in_ui  = util_capture(nil, nil, api_key) { @cmd.execute }
+    host        = 'http://some-gemcutter-compatible-host.org'
+    sign_in_ui  = util_capture(nil, host, api_key) { @cmd.execute }
+    credentials = YAML.load_file Gem.configuration.credentials_path
+
+    assert_equal credentials[:rubygems_api_key], api_key
+
+    assert_equal credentials[host], nil
+  end
+
+  def test_execute_with_host_supplied
+    host = 'http://some-gemcutter-compatible-host.org'
+
+    sign_in_ui = util_capture(nil, host) { @cmd.execute }
+    assert_match %r{Enter your #{host} credentials.}, sign_in_ui.output
+    assert_match %r{Signed in.}, sign_in_ui.output
+
+    api_key     = 'a5fdbb6ba150cbb83aad2bb2fede64cf040453903'
+    credentials = YAML.load_file Gem.configuration.credentials_path
+    assert_equal api_key, credentials[host]    
+  end
+  
+  def test_execute_with_valid_creds_set_for_default_host
+    util_capture {@cmd.execute}
+    
+    api_key     = 'a5fdbb6ba150cbb83aad2bb2fede64cf040453903'
+    credentials = YAML.load_file Gem.configuration.credentials_path
+    
+    assert_equal api_key, credentials[:rubygems_api_key]
+  end
+
+  # Utility method to capture IO/UI within the block passed
+
+  def util_capture ui_stub = nil, host = nil, api_key = nil
+    api_key ||= 'a5fdbb6ba150cbb83aad2bb2fede64cf040453903'
+    response  = [api_key, 200, 'OK']
+    email     = 'you@example.com'
+    password  = 'secret'
+    fetcher   = Gem::FakeFetcher.new
+
+    # Set the expected response for the Web-API supplied
+    ENV['RUBYGEMS_HOST']       = host || Gem::DEFAULT_HOST
+    data_key                   = "#{ENV['RUBYGEMS_HOST']}/api/v1/api_key"
+    fetcher.data[data_key]     = response
+    Gem::RemoteFetcher.fetcher = fetcher
+
+    sign_in_ui                 = ui_stub || Gem::MockGemUi.new("#{email}\n#{password}\n")
+
+    use_ui sign_in_ui do
+      yield
+    end
+
+    sign_in_ui
+  end
+end