Add integration test using force

.standard.yml

@@ -4,3 +4,4 @@ ruby_version: 2.7
 ignore:
   - 'dummyapp/**/*'
   - 'spec/dummyapp/**/*'
+  - 'spec/templates/**/*'

spec/integration/annotate_file_with_existing_annotations_spec.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require "integration_spec_helper"
+
+RSpec.describe "Annotate a file with existing annotations", type: "aruba" do
+  let(:models_dir) { "app/models" }
+  let(:command_timeout_seconds) { 10 }
+
+  before do
+    copy(Dir[File.join(aruba.config.root_directory, "spec/dummyapp/*")], aruba.config.home_directory)
+
+    # Unset the bundler context from running annotaterb integration specs.
+    #   This way, when `run_command("bundle exec annotaterb")` runs, it runs as if it's within the context of dummyapp.
+    unset_bundler_env_vars
+  end
+
+  let(:templates_dir) { File.join(aruba.config.root_directory, "spec/templates/#{ENV["DATABASE_ADAPTER"]}") }
+  let(:model_file) { "app/models/test_default.rb" }
+
+  context "when using 'force' option and 'position: bottom'" do
+    before do
+      # Copy file with existing annotations at the top
+      copy(File.join(templates_dir, "test_default.rb"), "app/models")
+    end
+
+    it "moves annotations to the bottom of the file" do
+      expected_test_default = read(File.join(templates_dir, "test_default_with_bottom_annotations.rb")).join("\n")
+      original_test_default = read(File.join(models_dir, "test_default.rb")).join("\n")
+
+      # Check that files have been copied over correctly
+      expect(expected_test_default).not_to eq(original_test_default)
+
+      _cmd = run_command_and_stop(
+        "bundle exec annotaterb models #{model_file} --force --position bottom",
+        fail_on_error: true,
+        exit_timeout: command_timeout_seconds
+      )
+
+      annotated_test_default = read(File.join(models_dir, "test_default.rb")).join("\n")
+
+      expect(last_command_started).to be_successfully_executed
+      expect(annotated_test_default).to eq(expected_test_default)
+    end
+  end
+end

spec/templates/mysql2/test_default_with_bottom_annotations.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+class TestDefault < ApplicationRecord
+end
+
+# == Schema Information
+#
+# Table name: test_defaults
+#
+#  id         :bigint           not null, primary key
+#  boolean    :boolean          default(FALSE)
+#  date       :date             default(Tue, 04 Jul 2023)
+#  datetime   :datetime         default(Tue, 04 Jul 2023 12:34:56.000000000 UTC +00:00)
+#  decimal    :decimal(14, 2)   default(43.21)
+#  float      :float(24)        default(12.34)
+#  integer    :integer          default(99)
+#  string     :string(255)      default("hello world!")
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#

spec/templates/pg/test_default_with_bottom_annotations.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+class TestDefault < ApplicationRecord
+end
+
+# == Schema Information
+#
+# Table name: test_defaults
+#
+#  id         :bigint           not null, primary key
+#  boolean    :boolean          default(FALSE)
+#  date       :date             default(Tue, 04 Jul 2023)
+#  datetime   :datetime         default(Tue, 04 Jul 2023 12:34:56.000000000 UTC +00:00)
+#  decimal    :decimal(14, 2)   default(43.21)
+#  float      :float            default(12.34)
+#  integer    :integer          default(99)
+#  string     :string           default("hello world!")
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#

spec/templates/sqlite3/test_default_with_bottom_annotations.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+class TestDefault < ApplicationRecord
+end
+
+# == Schema Information
+#
+# Table name: test_defaults
+#
+#  id         :integer          not null, primary key
+#  boolean    :boolean          default(FALSE)
+#  date       :date             default(Tue, 04 Jul 2023)
+#  datetime   :datetime         default(Tue, 04 Jul 2023 12:34:56.000000000 UTC +00:00)
+#  decimal    :decimal(14, 2)   default(43.21)
+#  float      :float            default(12.34)
+#  integer    :integer          default(99)
+#  string     :string           default("hello world!")
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#