1 files changed, 37 insertions, 0 deletions
diff --git a/spec/lib/gitlab/sentence_spec.rb b/spec/lib/gitlab/sentence_spec.rb
new file mode 100644
index 00000000000..b37925abbc6
--- /dev/null
+++ b/spec/lib/gitlab/sentence_spec.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Gitlab::Sentence, feature_category: :shared do
+  delegate :to_exclusive_sentence, to: :described_class
+
+  describe '.to_exclusive_sentence' do
+    it 'calls #to_sentence on the array' do
+      array = double
+
+      expect(array).to receive(:to_sentence)
+
+      to_exclusive_sentence(array)
+    end
+
+    it 'joins arrays with two elements correctly' do
+      array = %w[foo bar]
+
+      expect(to_exclusive_sentence(array)).to eq('foo or bar')
+    end
+
+    it 'joins arrays with more than two elements correctly' do
+      array = %w[foo bar baz]
+
+      expect(to_exclusive_sentence(array)).to eq('foo, bar, or baz')
+    end
+
+    it 'localizes the connector words' do
+      array = %w[foo bar baz]
+
+      expect(described_class).to receive(:_).with(' or ').and_return(' <1> ')
+      expect(described_class).to receive(:_).with(', or ').and_return(', <2> ')
+      expect(to_exclusive_sentence(array)).to eq('foo, bar, <2> baz')
+    end
+  end
+end