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// This context holds all the configuration items in the same
// way that Eden context works: the commands line options override
// YAML settings. In addition to that, context is polymorphic in
// a sense that it abstracts away a particular controller (currently
// Adam and Zedcloud are supported)
tc *TestContext // TestContext is at least {
                //    controller *Controller
                //    project *Project
                //    nodes []EdgeNode
                //    ...
                // }

// TestMain is used to provide setup and teardown for the rest of the
// tests. As part of setup we make sure that context has a slice of
// EVE instances that we can operate on. For any action, if the instance
// is not specified explicitly it is assumed to be the first one in the slice
func TestMain(m *testing.M) {
     // this is expected to connect us to a desired controller
     tc = NewTestContex(...)

     // The following probably needs to be part of NewTestContext,
     // I'm breaking it out to explain a few key things:
     
     // Registering our own project namespace with controller for easy cleanup
     tc.project = tc.controller.NewProject(GENERATED NAME BASED ON TestReboot + user + timestamp + uuid)

     // Create representation of EVE instances (based on the names
     // or UUIDs that were passed in) in the context. This is the first place
     // where we're using zcli-like API:
     for nodeName in range ... {
          edgeNode := tc.controller.GetEdgeNode(nodeName)
 
          if edgeNode == nil {
             // Couldn't find existing edgeNode record in the controller.
             // Need to create it from scratch now:
             // this is modeled after: zcli edge-node create <name>
             // --project=<project> --model=<model> [--title=<title>]
             // ([--edge-node-certificate=<certificate>] |
             // [--onboarding-certificate=<certificate>] |
             // [(--onboarding-key=<key> --serial=<serial-number>)])
             // [--network=<network>...]
             //
             // XXX: not sure if struct (giving us optional fields) would be better
             edgeNode := tc.controller.NewEdgeNode(nodeName, tc.contr, ...)
          } else {
             // make sure to move EdgeNode to the project we created, again
             // this is modeled after zcli edge-node update <name> [--title=<title>] 
             // [--lisp-mode=experimental|default] [--project=<project>] 
             // [--clear-onboarding-certs] [--config=<key:value>...] [--network=<network>...]
             edgeNode.update(... project=XXX...)
          }

          // finally we need to make sure that the edgeNode is in a state that we need
          // it to be, before the test can run -- this could be multiple checks on its
          // status, but for example:
          if edgeNode.GetStatus().state != registered {
             // we may need to trasistion the node into registered state, or may be
             // we just note that fact
          }

          // this is a good node -- lets add it to the test context
          tc.addNode(edgeNode)
      }

      // we now have a situation where TestContext has enough EVE nodes known
      // for the rest of the tests to run. So run them:
      res := m.Run()
  
      // Finally, we need to cleanup whatever objects may be in in the project we created
      // and then we can exit

     os.Exit(res)
}


func TestReboot(t *testing.T) {
    // note that GetEdgeNode() without any argument is
    // equivalent to the default (first one). Otherwise
    // one can specify a name GetEdgeNode("foo")
    edgeNode := tc.GetEdgeNode()

    // this is modeled after: zcli edge-node reboot [-f] <name>
    edgeNode.Reboot()

    // this is how we make sure that the right event actually happens:
    tc.AssertInfo("expected reboot to happen", func() {})

    // now we're blocking until the time elapses or asserts fire
    tc.WaitForAsserts(60) // this is guarantee to exit under 60 seconds
}