test: common: software

Test API of `class Software`, focus on initial state on construction.

Change-Id: I20350748d02f62cfb8371fee68d43ebbdb91609c
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>
diff --git a/test/common/exampledevice/example_device.hpp b/test/common/exampledevice/example_device.hpp
index 67269d5..4bfbb1e 100644
--- a/test/common/exampledevice/example_device.hpp
+++ b/test/common/exampledevice/example_device.hpp
@@ -51,6 +51,7 @@
 {
   public:
     using Software::createInventoryAssociation;
+    using Software::getPurpose;
     using Software::objectPath;
     ExampleSoftware(sdbusplus::async::context& ctx, ExampleDevice& parent);
 };