1 files changed, 21 insertions, 0 deletions
diff --git a/spec/lib/gitlab/exclusive_lease_spec.rb b/spec/lib/gitlab/exclusive_lease_spec.rb
new file mode 100644
index 00000000000..fbdb7ea34ac
--- /dev/null
+++ b/spec/lib/gitlab/exclusive_lease_spec.rb
@@ -0,0 +1,21 @@
+require 'spec_helper'
+
+describe Gitlab::ExclusiveLease do
+  it 'cannot obtain twice before the lease has expired' do
+    lease = Gitlab::ExclusiveLease.new(unique_key, timeout: 3600)
+    expect(lease.try_obtain).to eq(true)
+    expect(lease.try_obtain).to eq(false)
+  end
+
+  it 'can obtain after the lease has expired' do
+    timeout = 1
+    lease = Gitlab::ExclusiveLease.new(unique_key, timeout: timeout)
+    lease.try_obtain # start the lease
+    sleep(2 * timeout) # lease should have expired now
+    expect(lease.try_obtain).to eq(true)
+  end
+
+  def unique_key
+    SecureRandom.hex(10)
+  end
+end