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diff --git a/spec/support/shared_examples/features/wiki/user_views_wiki_page_shared_examples.rb b/spec/support/shared_examples/features/wiki/user_views_wiki_page_shared_examples.rb
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+++ b/spec/support/shared_examples/features/wiki/user_views_wiki_page_shared_examples.rb
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+# frozen_string_literal: true
+
+# Requires a context containing:
+#   wiki
+#   user
+
+RSpec.shared_examples 'User views a wiki page' do
+  include WikiHelpers
+
+  let(:path) { 'image.png' }
+  let(:wiki_page) do
+    create(:wiki_page,
+           wiki: wiki,
+           title: 'home', content: "Look at this [image](#{path})\n\n ![alt text](#{path})")
+  end
+
+  before do
+    sign_in(user)
+  end
+
+  context 'when wiki is empty', :js do
+    before do
+      visit wiki_path(wiki)
+
+      wait_for_svg_to_be_loaded
+
+      click_link "Create your first page"
+
+      fill_in(:wiki_title, with: 'one/two/three-test')
+
+      page.within('.wiki-form') do
+        fill_in(:wiki_content, with: 'wiki content')
+        click_on('Create page')
+      end
+
+      expect(page).to have_content('Wiki was successfully updated.')
+    end
+
+    it 'shows the history of a page that has a path' do
+      expect(current_path).to include('one/two/three-test')
+
+      first(:link, text: 'three').click
+      click_on('Page history')
+
+      expect(current_path).to include('one/two/three-test')
+
+      page.within(:css, '.nav-text') do
+        expect(page).to have_content('History')
+      end
+    end
+
+    it 'shows an old version of a page' do
+      expect(current_path).to include('one/two/three-test')
+      expect(find('.wiki-pages')).to have_content('three')
+
+      first(:link, text: 'three').click
+
+      expect(find('[data-testid="wiki_page_title"]')).to have_content('three')
+
+      click_on('Edit')
+
+      expect(current_path).to include('one/two/three-test')
+      expect(page).to have_content('Edit Page')
+
+      fill_in('Content', with: 'Updated Wiki Content')
+      click_on('Save changes')
+
+      expect(page).to have_content('Wiki was successfully updated.')
+
+      click_on('Page history')
+
+      within('.nav-text') do
+        expect(page).to have_content('History')
+      end
+
+      within('.wiki-history') do
+        expect(page).to have_css('a[href*="?version_id"]', count: 4)
+      end
+    end
+  end
+
+  context 'when a page does not have history' do
+    before do
+      visit(wiki_page_path(wiki, wiki_page))
+    end
+
+    it 'shows all the pages' do
+      expect(page).to have_content(user.name)
+      expect(find('.wiki-pages')).to have_content(wiki_page.title.capitalize)
+    end
+
+    context 'shows a file stored in a page' do
+      let(:path) { upload_file_to_wiki(wiki, user, 'dk.png') }
+
+      it do
+        expect(page).to have_xpath("//img[@data-src='#{wiki.wiki_base_path}/#{path}']")
+        expect(page).to have_link('image', href: "#{wiki.wiki_base_path}/#{path}")
+
+        click_on('image')
+
+        expect(current_path).to match("wikis/#{path}")
+        expect(page).not_to have_xpath('/html') # Page should render the image which means there is no html involved
+      end
+    end
+
+    it 'shows the creation page if file does not exist' do
+      expect(page).to have_link('image', href: "#{wiki.wiki_base_path}/#{path}")
+
+      click_on('image')
+
+      expect(current_path).to match("wikis/#{path}")
+      expect(page).to have_content('Create New Page')
+    end
+  end
+
+  context 'when a page has history' do
+    before do
+      wiki_page.update(message: 'updated home', content: 'updated [some link](other-page)') # rubocop:disable Rails/SaveBang
+    end
+
+    it 'shows the page history' do
+      visit(wiki_page_path(wiki, wiki_page))
+
+      expect(page).to have_selector('[data-testid="wiki_edit_button"]')
+
+      click_on('Page history')
+
+      expect(page).to have_content(user.name)
+      expect(page).to have_content("#{user.username} created page: home")
+      expect(page).to have_content('updated home')
+    end
+
+    it 'does not show the "Edit" button' do
+      visit(wiki_page_path(wiki, wiki_page, version_id: wiki_page.versions.last.id))
+
+      expect(page).not_to have_selector('[data-testid="wiki_edit_button"]')
+    end
+
+    context 'show the diff' do
+      def expect_diff_links(commit)
+        diff_path = wiki_page_path(wiki, wiki_page, version_id: commit, action: :diff)
+
+        expect(page).to have_link('Hide whitespace changes', href: "#{diff_path}&w=1")
+        expect(page).to have_link('Inline', href: "#{diff_path}&view=inline")
+        expect(page).to have_link('Side-by-side', href: "#{diff_path}&view=parallel")
+        expect(page).to have_link("View page @ #{commit.short_id}", href: wiki_page_path(wiki, wiki_page, version_id: commit))
+        expect(page).to have_css('.diff-file[data-blob-diff-path="%s"]' % diff_path)
+      end
+
+      it 'links to the correct diffs' do
+        visit wiki_page_path(wiki, wiki_page, action: :history)
+
+        commit1 = wiki.commit('HEAD^')
+        commit2 = wiki.commit
+
+        expect(page).to have_link('created page: home', href: wiki_page_path(wiki, wiki_page, version_id: commit1, action: :diff))
+        expect(page).to have_link('updated home', href: wiki_page_path(wiki, wiki_page, version_id: commit2, action: :diff))
+      end
+
+      it 'between the current and the previous version of a page' do
+        commit = wiki.commit
+        visit wiki_page_path(wiki, wiki_page, version_id: commit, action: :diff)
+
+        expect(page).to have_content('by John Doe')
+        expect(page).to have_content('updated home')
+        expect(page).to have_content('Showing 1 changed file with 1 addition and 3 deletions')
+        expect(page).to have_content('some link')
+
+        expect_diff_links(commit)
+      end
+
+      it 'between two old versions of a page' do
+        wiki_page.update(message: 'latest home change', content: 'updated [another link](other-page)') # rubocop:disable Rails/SaveBang:
+        commit = wiki.commit('HEAD^')
+        visit wiki_page_path(wiki, wiki_page, version_id: commit, action: :diff)
+
+        expect(page).to have_content('by John Doe')
+        expect(page).to have_content('updated home')
+        expect(page).to have_content('Showing 1 changed file with 1 addition and 3 deletions')
+        expect(page).to have_content('some link')
+        expect(page).not_to have_content('latest home change')
+        expect(page).not_to have_content('another link')
+
+        expect_diff_links(commit)
+      end
+
+      it 'for the oldest version of a page' do
+        commit = wiki.commit('HEAD^')
+        visit wiki_page_path(wiki, wiki_page, version_id: commit, action: :diff)
+
+        expect(page).to have_content('by John Doe')
+        expect(page).to have_content('created page: home')
+        expect(page).to have_content('Showing 1 changed file with 4 additions and 0 deletions')
+        expect(page).to have_content('Look at this')
+
+        expect_diff_links(commit)
+      end
+    end
+  end
+
+  context 'when a page has special characters in its title' do
+    let(:title) { '<foo> !@#$%^&*()[]{}=_+\'"\\|<>? <bar>' }
+
+    before do
+      wiki_page.update(title: title ) # rubocop:disable Rails/SaveBang
+    end
+
+    it 'preserves the special characters' do
+      visit(wiki_page_path(wiki, wiki_page))
+
+      expect(page).to have_css('[data-testid="wiki_page_title"]', text: title)
+      expect(page).to have_css('.wiki-pages li', text: title)
+    end
+  end
+
+  context 'when a page has XSS in its title or content' do
+    let(:title) { '<script>alert("title")<script>' }
+
+    before do
+      wiki_page.update(title: title, content: 'foo <script>alert("content")</script> bar') # rubocop:disable Rails/SaveBang
+    end
+
+    it 'safely displays the page' do
+      visit(wiki_page_path(wiki, wiki_page))
+
+      expect(page).to have_selector('[data-testid="wiki_page_title"]', text: title)
+      expect(page).to have_content('foo bar')
+    end
+  end
+
+  context 'when a page has XSS in its message' do
+    before do
+      wiki_page.update(message: '<script>alert(true)<script>', content: 'XSS update') # rubocop:disable Rails/SaveBang
+    end
+
+    it 'safely displays the message' do
+      visit(wiki_page_path(wiki, wiki_page, action: :history))
+
+      expect(page).to have_content('<script>alert(true)<script>')
+    end
+  end
+
+  context 'when page has invalid content encoding' do
+    let(:content) { (+'whatever').force_encoding('ISO-8859-1') }
+
+    before do
+      allow(Gitlab::EncodingHelper).to receive(:encode!).and_return(content)
+
+      visit(wiki_page_path(wiki, wiki_page))
+    end
+
+    it 'does not show "Edit" button' do
+      expect(page).not_to have_selector('[data-testid="wiki_edit_button"]')
+    end
+
+    it 'shows error' do
+      page.within(:css, '.flash-notice') do
+        expect(page).to have_content('The content of this page is not encoded in UTF-8. Edits can only be made via the Git repository.')
+      end
+    end
+  end
+
+  it 'opens a default wiki page', :js do
+    visit wiki.container.web_url
+
+    find('.shortcuts-wiki').click
+
+    wait_for_svg_to_be_loaded
+
+    click_link "Create your first page"
+
+    expect(page).to have_content('Create New Page')
+  end
+end