Add test to validate the maximum size of the `content` directory

Based on suggestion:
https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/4726#note_459473659

We are going to include part of the gitlab-docs repository to the
Omnibus package. But the Omnibus package has a strict size limit. The
new test will check if the `content` directory size does not exceed
the limit.

1 files changed, 18 insertions, 0 deletions

diff --git a/spec/gitlab/content_spec.rb b/spec/gitlab/content_spec.rb
new file mode 100644
index 00000000..bfa35ab8
--- /dev/null
+++ b/spec/gitlab/content_spec.rb
@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+# See: https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/4726#note_459473659
+describe 'Content directory size' do
+  subject { Dir.glob('content/**/*').sum { |f| File.size(f) } }
+
+  let(:megabyte) { 1024 ** 2 }
+
+  # This limit can be increased after checking that Omnibus package build does not fail
+  let(:maximum_size) { 2 * megabyte }
+
+  # `content` directory is included to the Omnibus package
+  # We want to make sure that the size of the directory is small enough
+  # to prevent accidental Omnibus pipeline failures.
+  it 'is not too big' do
+    is_expected.to be < maximum_size
+  end
+end