Issue #1186 - Style conformity for names in installer tests

installer/src/installer-lib/test/property_test.cpp

 #include <gtest/gtest.h>
 
 #include "../database.h"
 #include "../property.h"
 
 TEST(Property_Test, null)
 {
   /*
    * This is an extract of manual test code originally run from AbpCloseIe DLL entry point.
    * This code relies on an MSI database opened for installation, which we don't need to access properties.
    * We can instead use an offline session, with the database opened outside Windows Installer.
    * That session class, though, isn't written yet.
    */
   /*
    * DISABLED. Refactor into proper tests.
    */
   if (false)
   {
     // This variable was the argument to the entry point.
-    MSIHANDLE session_handle = 0;
+    MSIHANDLE sessionHandle = 0;
 
     // The code in the body.
-    ImmediateSession session(session_handle, "AbpCloseIe");
+    ImmediateSession session(sessionHandle, "AbpCloseIe");
     session.Log(L"Have session object");
     InstallationDatabase db(session);
     session.Log(L"Have database object");
 
     // Test: ensure that a property is present with its expected value. Exercises the conversion operator to String.
     session.Log(L"VersionMsi = " + Property(session, L"VersionMsi"));
 
     // Test: create a property dynamically from within the CA. Not sure if this can be done offline.
     Property tv(session, L"TESTVARIABLE");
     session.Log(L"TESTVARIABLE = " + tv);
 
     // Test: assign a new value to a property.
     session.Log(L"Setting TESTVARIABLE to 'testvalue'");
     tv = L"testvalue";
     session.Log(L"TESTVARIABLE = " + tv);
   }
 }