Add Callout serialization unit tests

Tested: Testcases pass

Change-Id: I4a6c523847055607f2211d9bc8c01a2d2011675c
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/test/test_callout.cpp b/test/test_callout.cpp
new file mode 100644
index 0000000..8d656cc
--- /dev/null
+++ b/test/test_callout.cpp
@@ -0,0 +1,92 @@
+/**
+ * Copyright © 2018 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <fstream>
+#include <gtest/gtest.h>
+#include <experimental/filesystem>
+#include "callout.hpp"
+#include "dbus.hpp"
+
+using namespace ibm::logging;
+
+class CalloutTest : public ::testing::Test
+{
+  protected:
+    virtual void SetUp()
+    {
+        char dir[] = {"./calloutsXXXXXX"};
+
+        persistDir = mkdtemp(dir);
+    }
+
+    virtual void TearDown()
+    {
+        fs::remove_all(persistDir);
+    }
+
+    fs::path persistDir;
+};
+
+TEST_F(CalloutTest, TestPersist)
+{
+    using namespace std::literals::string_literals;
+
+    auto bus = sdbusplus::bus::new_default();
+    std::string objectPath{"/callout/path/0"};
+    std::string calloutPath{"/some/inventory/object"};
+    size_t id = 0;
+    uint64_t ts = 5;
+
+    DbusPropertyMap assetProps{{"BuildDate"s, Value{"Date42"s}},
+                               {"Manufacturer"s, Value{"Mfg42"s}},
+                               {"Model"s, Value{"Model42"s}},
+                               {"PartNumber"s, Value{"PN42"s}},
+                               {"SerialNumber"s, Value{"SN42"s}}};
+    {
+        auto callout = std::make_unique<Callout>(bus, objectPath, calloutPath,
+                                                 id, ts, assetProps);
+        callout->serialize(persistDir);
+
+        ASSERT_EQ(fs::exists(persistDir / std::to_string(id)), true);
+    }
+
+    // Test object restoration
+    {
+        auto callout = std::make_unique<Callout>(bus, objectPath, id, ts);
+
+        ASSERT_EQ(callout->deserialize(persistDir), true);
+
+        ASSERT_EQ(callout->id(), id);
+        ASSERT_EQ(callout->ts(), ts);
+        ASSERT_EQ(callout->path(), calloutPath);
+        ASSERT_EQ(callout->buildDate(),
+                  assetProps["BuildDate"].get<std::string>());
+        ASSERT_EQ(callout->manufacturer(),
+                  assetProps["Manufacturer"].get<std::string>());
+        ASSERT_EQ(callout->model(), assetProps["Model"].get<std::string>());
+        ASSERT_EQ(callout->partNumber(),
+                  assetProps["PartNumber"].get<std::string>());
+        ASSERT_EQ(callout->serialNumber(),
+                  assetProps["SerialNumber"].get<std::string>());
+    }
+
+    // Test a serialization failure due to a bad timestamp
+    {
+        auto callout = std::make_unique<Callout>(bus, objectPath, id, ts + 1);
+
+        ASSERT_EQ(callout->deserialize(persistDir), false);
+        ASSERT_EQ(fs::exists(persistDir / std::to_string(id)), false);
+    }
+}