1 files changed, 34 insertions, 0 deletions
diff --git a/spec/rubocop/cop/avoid_becomes_spec.rb b/spec/rubocop/cop/avoid_becomes_spec.rb
new file mode 100644
index 00000000000..3e3e3abc27d
--- /dev/null
+++ b/spec/rubocop/cop/avoid_becomes_spec.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+require 'rubocop'
+require 'rubocop/rspec/support'
+require_relative '../../../rubocop/cop/avoid_becomes'
+
+RSpec.describe RuboCop::Cop::AvoidBecomes, type: :rubocop do
+  include CopHelper
+
+  subject(:cop) { described_class.new }
+
+  it 'flags the use of becomes with a constant parameter' do
+    inspect_source('foo.becomes(Project)')
+
+    expect(cop.offenses.size).to eq(1)
+  end
+
+  it 'flags the use of becomes with a namespaced constant parameter' do
+    inspect_source('foo.becomes(Namespace::Group)')
+
+    expect(cop.offenses.size).to eq(1)
+  end
+
+  it 'flags the use of becomes with a dynamic parameter' do
+    inspect_source(<<~RUBY)
+    model = Namespace
+    project = Project.first
+    project.becomes(model)
+    RUBY
+
+    expect(cop.offenses.size).to eq(1)
+  end
+end