Add latest changes from gitlab-org/gitlab@13-5-stable-eev13.5.0-rc42

1 files changed, 126 insertions, 0 deletions

diff --git a/spec/lib/gitlab/ci/runner/backoff_spec.rb b/spec/lib/gitlab/ci/runner/backoff_spec.rb
new file mode 100644
index 00000000000..f147d69f7cd
--- /dev/null
+++ b/spec/lib/gitlab/ci/runner/backoff_spec.rb
@@ -0,0 +1,126 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+require 'rspec-parameterized'
+require 'active_support/testing/time_helpers'
+
+RSpec.describe Gitlab::Ci::Runner::Backoff do
+  include ActiveSupport::Testing::TimeHelpers
+
+  describe '#duration' do
+    it 'returns backoff duration from start' do
+      freeze_time do
+        described_class.new(5.minutes.ago).then do |backoff|
+          expect(backoff.duration).to eq 5.minutes
+        end
+      end
+    end
+
+    it 'returns an integer value' do
+      freeze_time do
+        described_class.new(5.seconds.ago).then do |backoff|
+          expect(backoff.duration).to be 5
+        end
+      end
+    end
+
+    it 'returns the smallest number greater than or equal to duration' do
+      freeze_time do
+        described_class.new(0.5.seconds.ago).then do |backoff|
+          expect(backoff.duration).to be 1
+        end
+      end
+    end
+  end
+
+  describe '#slot' do
+    using RSpec::Parameterized::TableSyntax
+
+    where(:started, :slot) do
+      0   | 0
+      0.1 | 0
+      0.9 | 0
+      1   | 0
+      1.1 | 0
+      1.9 | 0
+      2   | 0
+      2.9 | 0
+      3   | 0
+      4   | 1
+      5   | 1
+      6   | 1
+      7   | 1
+      8   | 2
+      9   | 2
+      9.9 | 2
+      10  | 2
+      15  | 2
+      16  | 3
+      31  | 3
+      32  | 4
+      63  | 4
+      64  | 5
+      127 | 5
+      128 | 6
+      250 | 6
+      310 | 7
+      520 | 8
+      999 | 8
+    end
+
+    with_them do
+      it 'falls into an appropaite backoff slot' do
+        freeze_time do
+          backoff = described_class.new(started.seconds.ago)
+          expect(backoff.slot).to eq slot
+        end
+      end
+    end
+  end
+
+  describe '#to_seconds' do
+    using RSpec::Parameterized::TableSyntax
+
+    where(:started, :backoff) do
+      0   | 1
+      0.1 | 1
+      0.9 | 1
+      1   | 1
+      1.1 | 1
+      1.9 | 1
+      2   | 1
+      3   | 1
+      4   | 2
+      5   | 2
+      6   | 2
+      6.5 | 2
+      7   | 2
+      8   | 4
+      9   | 4
+      9.9 | 4
+      10  | 4
+      15  | 4
+      16  | 8
+      31  | 8
+      32  | 16
+      63  | 16
+      64  | 32
+      127 | 32
+      128 | 64
+      250 | 64
+      310 | 64
+      520 | 64
+      999 | 64
+    end
+
+    with_them do
+      it 'calculates backoff based on an appropriate slot' do
+        freeze_time do
+          described_class.new(started.seconds.ago).then do |delay|
+            expect(delay.to_seconds).to eq backoff
+          end
+        end
+      end
+    end
+  end
+end