1 files changed, 62 insertions, 0 deletions
diff --git a/spec/rubocop/cop/migration/drop_table_spec.rb b/spec/rubocop/cop/migration/drop_table_spec.rb
new file mode 100644
index 00000000000..4fe7fc8c5a5
--- /dev/null
+++ b/spec/rubocop/cop/migration/drop_table_spec.rb
@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+require 'rubocop'
+require 'rubocop/rspec/support'
+
+require_relative '../../../../rubocop/cop/migration/drop_table'
+
+describe RuboCop::Cop::Migration::DropTable do
+  include CopHelper
+
+  subject(:cop) { described_class.new }
+
+  context 'when in deployment migration' do
+    before do
+      allow(cop).to receive(:in_deployment_migration?).and_return(true)
+    end
+
+    it 'registers an offense' do
+      expect_offense(<<~PATTERN)
+        def change
+          drop_table :table
+          ^^^^^^^^^^ #{described_class::MSG}
+
+          add_column(:users, :username, :text)
+
+          execute "DROP TABLE table"
+          ^^^^^^^ #{described_class::MSG}
+
+          execute "CREATE UNIQUE INDEX email_index ON users (email);"
+        end
+      PATTERN
+    end
+  end
+
+  context 'when in post-deployment migration' do
+    before do
+      allow(cop).to receive(:in_post_deployment_migration?).and_return(true)
+    end
+
+    it 'registers no offense' do
+      expect_no_offenses(<<~PATTERN)
+        def change
+          drop_table :table
+          execute "DROP TABLE table"
+        end
+      PATTERN
+    end
+  end
+
+  context 'when outside of migration' do
+    it 'registers no offense' do
+      expect_no_offenses(<<~PATTERN)
+        def change
+          drop_table :table
+          execute "DROP TABLE table"
+        end
+      PATTERN
+    end
+  end
+end