Factorize bin/update in bin/setup, and make bin/setup idempotent

`bin/setup` and `bin/update` are currently almost the same file. The
only thing that keeps them apart is that one is running `bin/rails
db:setup` and the other `bin/rails db:migrate`.

I'm suggesting here that they should be a unique script, which needs to
be idempotent.

- New to a project, need to get started? `bin/setup`
- Need to install new dependencies that were added recently? `bin/setup`.

Before deprecating `bin/update`, I'm suggesting we just have it call
`bin/setup`.

1 files changed, 11 insertions, 15 deletions

diff --git a/railties/test/application/bin_setup_test.rb b/railties/test/application/bin_setup_test.rb
index a952d2466b..aa0da0931d 100644
--- a/railties/test/application/bin_setup_test.rb
+++ b/railties/test/application/bin_setup_test.rb
@@ -6,21 +6,12 @@ module ApplicationTests
   class BinSetupTest < ActiveSupport::TestCase
     include ActiveSupport::Testing::Isolation
 
-    def setup
-      build_app
-    end
-
-    def teardown
-      teardown_app
-    end
+    setup :build_app
+    teardown :teardown_app
 
     def test_bin_setup
       Dir.chdir(app_path) do
-        app_file "db/schema.rb", <<-RUBY
-          ActiveRecord::Schema.define(version: 20140423102712) do
-            create_table(:articles) {}
-          end
-        RUBY
+        rails "generate", "model", "article"
 
         list_tables = lambda { rails("runner", "p ActiveRecord::Base.connection.tables").strip }
         File.write("log/test.log", "zomg!")
@@ -28,15 +19,20 @@ module ApplicationTests
         assert_equal "[]", list_tables.call
         assert_equal 5, File.size("log/test.log")
         assert_not File.exist?("tmp/restart.txt")
+
         `bin/setup 2>&1`
         assert_equal 0, File.size("log/test.log")
-        assert_equal '["articles", "schema_migrations", "ar_internal_metadata"]', list_tables.call
+        assert_equal '["schema_migrations", "ar_internal_metadata", "articles"]', list_tables.call
         assert File.exist?("tmp/restart.txt")
       end
     end
 
     def test_bin_setup_output
       Dir.chdir(app_path) do
+        # SQLite3 seems to auto-create the database on first checkout.
+        rails "db:system:change", "--to=postgresql"
+        rails "db:drop"
+
         app_file "db/schema.rb", ""
 
         output = `bin/setup 2>&1`
@@ -53,8 +49,8 @@ module ApplicationTests
           The Gemfile's dependencies are satisfied
 
           == Preparing database ==
-          Created database 'db/development.sqlite3'
-          Created database 'db/test.sqlite3'
+          Created database 'app_development'
+          Created database 'app_test'
 
           == Removing old logs and tempfiles ==