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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) Huawei Technologies Co.,Ltd
+
+===========================================================
+VM Resource Scheduling on Multiple Nodes test specification
+===========================================================
+
+.. toctree::
+ :maxdepth: 2
+
+Scope
+=====
+
+The VM resource scheduling test area evaluates the ability of the system under
+test to support VM resource scheduling on multiple nodes.
+The tests in this test area will evaluate capabilities to schedule VM to multiple
+compute nodes directly with scheduler hints, and create server groups with policy
+affinity and anti-affinity.
+
+References
+==========
+
+- Availability zone
+
+ - https://docs.openstack.org/newton/networking-guide/config-az.html
+
+- Scheduling
+
+ - https://docs.openstack.org/kilo/config-reference/content/section_compute-scheduler.html
+
+Definitions and abbreviations
+=============================
+
+The following terms and abbreviations are used in conjunction with this test area
+
+- API - Application Programming Interface
+- NFVi - Network Functions Virtualization infrastructure
+- VIM - Virtual Infrastructure Manager
+- VM - Virtual Machine
+
+System Under Test (SUT)
+=======================
+
+The system under test is assumed to be the NFVi and VIM in operation on a
+Pharos compliant infrastructure.
+
+Test Area Structure
+===================
+
+The test area is structured based on server group operations and server operations
+on multiple nodes. Each test case is able to run independently, i.e. irrelevant of
+the state created by a previous test. Specifically, every test performs clean-up
+operations which return the system to the same state as before the test.
+
+Test Descriptions
+=================
+
+API Used and Reference
+----------------------
+
+Security Groups: https://developer.openstack.org/api-ref/network/v2/index.html#security-groups-security-groups
+
+- create security group
+- delete security group
+
+Networks: https://developer.openstack.org/api-ref/networking/v2/index.html#networks
+
+- create network
+- delete network
+
+Routers and interface: https://developer.openstack.org/api-ref/networking/v2/index.html#routers-routers
+
+- create router
+- delete router
+- add interface to router
+
+Subnets: https://developer.openstack.org/api-ref/networking/v2/index.html#subnets
+
+- create subnet
+- delete subnet
+
+Servers: https://developer.openstack.org/api-ref/compute/
+
+- create keypair
+- create server
+- show server
+- delete server
+- add/assign floating IP
+- create server group
+- delete server group
+- list server groups
+- show server group details
+
+Ports: https://developer.openstack.org/api-ref/networking/v2/index.html#ports
+
+- create port
+- delete port
+
+Floating IPs: https://developer.openstack.org/api-ref/networking/v2/index.html#floating-ips-floatingips
+
+- create floating IP
+- delete floating IP
+
+Availability zone: https://developer.openstack.org/api-ref/compute/
+
+- get availability zone
+
+------------------------------------------
+Test Case 1 - Schedule VM to compute nodes
+------------------------------------------
+
+Test case specification
+-----------------------
+
+tempest.scenario.test_server_multinode.TestServerMultinode.test_schedule_to_all_nodes
+
+Test preconditions
+------------------
+
+* At least 2 compute nodes
+* Openstack nova, neutron services are available
+* One public network
+
+Basic test flow execution description and pass/fail criteria
+------------------------------------------------------------
+
+Test execution
+''''''''''''''
+
+* Test action 1: Get all availability zones AZONES1 in the SUT
+* Test action 2: Get all compute nodes in AZONES1
+* Test action 3: Get the value of 'min_compute_nodes' which is set by user in tempest
+ config file and means the minimum number of compute nodes expected
+* **Test assertion 1:** Verify that SUT has at least as many compute nodes as
+ specified by the 'min_compute_nodes' threshold
+* Test action 4: Create one server for each compute node, up to the 'min_compute_nodes' threshold
+* **Test assertion 2:** Verify the number of servers matches the 'min_compute_nodes' threshold
+* Test action 5: Get every server's 'hostId' and store them in a set which has no duplicate values
+* **Test assertion 3:** Verify the length of the set equals to the number of servers to ensure
+ that every server ended up on a different host
+* Test action 6: Delete the created servers
+
+Pass / fail criteria
+''''''''''''''''''''
+
+This test evaluates the functionality of VM resource scheduling.
+Specifically, the test verifies that:
+
+* VMs are scheduled to the requested compute nodes correctly.
+
+In order to pass this test, all test assertions listed in the test execution above need to pass.
+
+Post conditions
+---------------
+
+N/A
+
+-------------------------------------------------------------------------------------
+Test Case 2 - Test create and delete multiple server groups with same name and policy
+-------------------------------------------------------------------------------------
+
+Test case specification
+-----------------------
+
+tempest.api.compute.servers.test_server_group.ServerGroupTestJSON.test_create_delete_multiple_server_groups_with_same_name_policy
+
+Test preconditions
+------------------
+
+None
+
+Basic test flow execution description and pass/fail criteria
+------------------------------------------------------------
+
+Test execution
+''''''''''''''
+
+* Test action 1: Generate a random name N1
+* Test action 2: Create a server group SERG1 with N1 and policy affinity
+* Test action 3: Create another server group SERG2 with N1 and policy affinity
+* **Test assertion 1:** The names of SERG1 and SERG2 are the same
+* **Test assertion 2:** The 'policies' of SERG1 and SERG2 are the same
+* **Test assertion 3:** The ids of SERG1 and SERG2 are different
+* Test action 4: Delete SERG1 and SERG2
+* Test action 5: List all server groups
+* **Test assertion 4:** SERG1 and SERG2 are not in the list
+
+Pass / fail criteria
+''''''''''''''''''''
+
+This test evaluates the functionality of creating and deleting server groups with the same name and policy.
+Specifically, the test verifies that:
+
+* Server groups can be created with the same name and policy.
+* Server groups with the same name and policy can be deleted successfully.
+
+In order to pass this test, all test assertions listed in the test execution above need to pass.
+
+Post conditions
+---------------
+
+N/A
+
+----------------------------------------------------------------------
+Test Case 3 - Test create and delete server group with affinity policy
+----------------------------------------------------------------------
+
+Test case specification
+-----------------------
+
+tempest.api.compute.servers.test_server_group.ServerGroupTestJSON.test_create_delete_server_group_with_affinity_policy
+
+Test preconditions
+------------------
+
+None
+
+Basic test flow execution description and pass/fail criteria
+------------------------------------------------------------
+
+Test execution
+''''''''''''''
+
+* Test action 1: Generate a random name N1
+* Test action 2: Create a server group SERG1 with N1 and policy affinity
+* **Test assertion 1:** The name of SERG1 returned in the response is the same as N1
+* **Test assertion 2:** The 'policies' of SERG1 returned in the response is affinity
+* Test action 3: Delete SERG1 and list all server groups
+* **Test assertion 3:** SERG1 is not in the list
+
+Pass / fail criteria
+''''''''''''''''''''
+
+This test evaluates the functionality of creating and deleting server group with affinity policy.
+Specifically, the test verifies that:
+
+* Server group can be created with affinity policy and deleted successfully.
+
+In order to pass this test, all test assertions listed in the test execution above need to pass.
+
+Post conditions
+---------------
+
+N/A
+
+---------------------------------------------------------------------------
+Test Case 4 - Test create and delete server group with anti-affinity policy
+---------------------------------------------------------------------------
+
+Test case specification
+-----------------------
+
+tempest.api.compute.servers.test_server_group.ServerGroupTestJSON.test_create_delete_server_group_with_anti_affinity_policy
+
+Test preconditions
+------------------
+
+None
+
+Basic test flow execution description and pass/fail criteria
+------------------------------------------------------------
+
+Test execution
+''''''''''''''
+
+* Test action 1: Generate a random name N1
+* Test action 2: Create a server group SERG1 with N1 and policy anti-affinity
+* **Test assertion 1:** The name of SERG1 returned in the response is the same as N1
+* **Test assertion 2:** The 'policies' of SERG1 returned in the response is anti-affinity
+* Test action 3: Delete SERG1 and list all server groups
+* **Test assertion 3:** SERG1 is not in the list
+
+Pass / fail criteria
+''''''''''''''''''''
+
+This test evaluates the functionality of creating and deleting server group with anti-affinity policy.
+Specifically, the test verifies that:
+
+* Server group can be created with anti-affinity policy and deleted successfully.
+
+In order to pass this test, all test assertions listed in the test execution above need to pass.
+
+Post conditions
+---------------
+
+N/A
+
+-------------------------------------
+Test Case 5 - Test list server groups
+-------------------------------------
+
+Test case specification
+-----------------------
+
+tempest.api.compute.servers.test_server_group.ServerGroupTestJSON.test_list_server_groups
+
+Test preconditions
+------------------
+
+None
+
+Basic test flow execution description and pass/fail criteria
+------------------------------------------------------------
+
+Test execution
+''''''''''''''
+
+* Test action 1: Generate a random name N1
+* Test action 2: Create a server group SERG1 with N1 and policy affinity
+* Test action 3: List all server groups
+* **Test assertion 1:** SERG1 is in the list
+* Test action 4: Delete SERG1
+
+Pass / fail criteria
+''''''''''''''''''''
+
+This test evaluates the functionality of listing server groups.
+Specifically, the test verifies that:
+
+* Server groups can be listed successfully.
+
+In order to pass this test, all test assertions listed in the test execution above need to pass.
+
+Post conditions
+---------------
+
+N/A
+
+--------------------------------------------
+Test Case 6 - Test show server group details
+--------------------------------------------
+
+Test case specification
+-----------------------
+
+tempest.api.compute.servers.test_server_group.ServerGroupTestJSON.test_show_server_group
+
+Test preconditions
+------------------
+
+None
+
+Basic test flow execution description and pass/fail criteria
+------------------------------------------------------------
+
+Test execution
+''''''''''''''
+
+* Test action 1: Generate a random name N1
+* Test action 2: Create a server group SERG1 with N1 and policy affinity, and stored
+ the details (D1) returned in the response
+* Test action 3: Show the details (D2) of SERG1
+* **Test assertion 1:** All values in D1 are the same as the values in D2
+* Test action 4: Delete SERG1
+
+Pass / fail criteria
+''''''''''''''''''''
+
+This test evaluates the functionality of showing server group details.
+Specifically, the test verifies that:
+
+* Server groups can be shown successfully.
+
+In order to pass this test, all test assertions listed in the test execution above need to pass.
+
+Post conditions
+---------------
+
+N/A