Add specs for Rex::OLE::CLSID

spec/lib/rex/ole/clsid_spec.rb

@@ -0,0 +1,55 @@
+# -*- coding:binary -*-
+require 'spec_helper'
+
+require 'rex/ole'
+
+describe Rex::OLE::CLSID do
+
+  let(:sample_clsid) { "\x00\x11\x22\x33\x44\x55\x66\x77\x88\x99\xaa\xbb\xcc\xdd\xee\xff" }
+
+  subject(:clsid) do
+    described_class.new(sample_clsid)
+  end
+
+  describe "#initialize" do
+    subject(:clsid_class) do
+      described_class.allocate
+    end
+
+    it "returns the buf value" do
+      expect(clsid_class.send(:initialize, sample_clsid)).to eq(sample_clsid)
+    end
+
+    context "when buf is nil" do
+      it "returns padding" do
+        expect(clsid_class.send(:initialize)).to eq("\x00" * 16)
+      end
+    end
+  end
+
+  describe "#pack" do
+    it "returns the buf field" do
+      expect(clsid.pack).to eq(sample_clsid)
+    end
+  end
+
+  describe "#to_s" do
+    it "returns printable clsid" do
+      expect(clsid.to_s).to eq('33221100-5544-7766-8899-aabbccddeeff')
+    end
+
+    context "when buf is nil" do
+      it "raises NoMethodError" do
+        clsid.instance_variable_set(:@buf, nil)
+        expect { clsid.to_s }.to raise_error(NoMethodError)
+      end
+    end
+
+    context "when buf is shorter than 16 bytes" do
+      it "raises TypeError" do
+        clsid.instance_variable_set(:@buf, '')
+        expect { clsid.to_s }.to raise_error(TypeError)
+      end
+    end
+  end
+end