1 files changed, 36 insertions, 0 deletions
diff --git a/spec/models/wiki_page_spec.rb b/spec/models/wiki_page_spec.rb
index 90ad3cdeb93..55d9c4ddd7b 100644
--- a/spec/models/wiki_page_spec.rb
+++ b/spec/models/wiki_page_spec.rb
@@ -208,6 +208,18 @@ describe WikiPage do
         expect(@page.update("more content")).to be_truthy
       end
     end
+
+    context 'with same last commit sha' do
+      it 'returns true' do
+        expect(@page.update('more content', last_commit_sha: @page.last_commit_sha)).to be_truthy
+      end
+    end
+
+    context 'with different last commit sha' do
+      it 'raises exception' do
+        expect { @page.update('more content', last_commit_sha: 'xxx') }.to raise_error(WikiPage::PageChangedError)
+      end
+    end
   end
 
   describe "#destroy" do
@@ -331,6 +343,30 @@ describe WikiPage do
     end
   end
 
+  describe '#last_commit_sha' do
+    before do
+      create_page("Update", "content")
+      @page = wiki.find_page("Update")
+    end
+
+    after do
+      destroy_page("Update")
+    end
+
+    it 'returns commit sha' do
+      expect(@page.last_commit_sha).to eq @page.commit.sha
+    end
+
+    it 'is changed after page updated' do
+      last_commit_sha_before_update = @page.last_commit_sha
+
+      @page.update("new content")
+      @page = wiki.find_page("Update")
+
+      expect(@page.last_commit_sha).not_to eq last_commit_sha_before_update
+    end
+  end
+
   private
 
   def remove_temp_repo(path)