1 files changed, 38 insertions, 0 deletions
diff --git a/spec/gitlab_reference_counter_spec.rb b/spec/gitlab_reference_counter_spec.rb
new file mode 100644
index 0000000..5be53ff
--- /dev/null
+++ b/spec/gitlab_reference_counter_spec.rb
@@ -0,0 +1,38 @@
+# coding: utf-8
+require 'spec_helper'
+require 'gitlab_reference_counter'
+
+describe GitlabReferenceCounter do
+  let(:redis_client) { double('redis_client') }
+  let(:reference_counter_key) { "git-receive-pack-reference-counter:/test/path" }
+  let(:gitlab_reference_counter) { GitlabReferenceCounter.new('/test/path') }
+
+  before do
+    allow(gitlab_reference_counter).to receive(:redis_client).and_return(redis_client)
+    $logger = double('logger').as_null_object
+  end
+
+  it 'increases and set the expire time of a reference count for a path' do
+    expect(redis_client).to receive(:incr).with(reference_counter_key)
+    expect(redis_client).to receive(:expire).with(reference_counter_key, GitlabReferenceCounter::REFERENCE_EXPIRE_TIME)
+    expect(gitlab_reference_counter.increase).to be(true)
+  end
+
+  it 'decreases the reference count for a path' do
+    allow(redis_client).to receive(:decr).and_return(0)
+    expect(redis_client).to receive(:decr).with(reference_counter_key)
+    expect(gitlab_reference_counter.decrease).to be(true)
+  end
+
+  it 'warns if attempting to decrease a counter with a value of one or less, and resets the counter' do
+    expect(redis_client).to receive(:decr).and_return(-1)
+    expect(redis_client).to receive(:del)
+    expect($logger).to receive(:warn).with("Reference counter for /test/path decreased when its value was less than 1. Reseting the counter.")
+    expect(gitlab_reference_counter.decrease).to be(true)
+  end
+
+  it 'get the reference count for a path' do
+    allow(redis_client).to receive(:get).and_return(1)
+    expect(gitlab_reference_counter.value).to be(1)
+  end
+end