1 files changed, 26 insertions, 4 deletions
diff --git a/spec/models/wiki_page_spec.rb b/spec/models/wiki_page_spec.rb
index 732a32684e8..e2cdff5fa22 100644
--- a/spec/models/wiki_page_spec.rb
+++ b/spec/models/wiki_page_spec.rb
@@ -211,15 +211,13 @@ describe WikiPage, models: true do
 
     context 'with same last commit sha' do
       it 'returns true' do
-        last_commit_sha = @page.commit.sha
-        expect(@page.update('more content', last_commit_sha: last_commit_sha)).to be_truthy
+        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
-        last_commit_sha = 'xxx'
-        expect { @page.update('more content', last_commit_sha: last_commit_sha) }.to raise_error(WikiPage::PageChangedError)
+        expect { @page.update('more content', last_commit_sha: 'xxx') }.to raise_error(WikiPage::PageChangedError)
       end
     end
   end
@@ -345,6 +343,30 @@ describe WikiPage, models: true 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)