Add Honeycomb TAP interface test

JIRA: CSIT-75

 - add test suite for TAP interface management through Honeycomb
 - add keywords required for TAP interface tests
 - move Honeycomb suite setup and teardown to new __init__ file
 - cleanup unused imports in Honeycomb test case files
 - modify "...should be empty" keywords to allow more reuse

Change-Id: Ie3dc9069678b60c359f69c5a216e452e856a0107
Signed-off-by: selias <samelias@cisco.com>

4 files changed, 174 insertions, 3 deletions

diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py
index 1c1ada8f6c..838ba3bb69 100644
--- a/resources/libraries/python/InterfaceUtil.py
+++ b/resources/libraries/python/InterfaceUtil.py
@@ -490,7 +490,7 @@ class InterfaceUtil(object):
         if output["retval"] == 0:
             return output["sw_if_index"]
         else:
-            raise RuntimeError('Unable to create VXLAN interface on node {}'
+            raise RuntimeError('Unable to create VXLAN interface on node {0}'
                                .format(node))
 
     @staticmethod
@@ -504,7 +504,7 @@ class InterfaceUtil(object):
         :type interface: int or str
         :return: Dictionary containing data for the given VxLAN interface or if
         interface=None, the list of dictionaries with all VxLAN interfaces.
-        :rtype dict or list
+        :rtype: dict or list
         """
         param = "sw_if_index"
         if interface is None:
@@ -544,6 +544,30 @@ class InterfaceUtil(object):
         return response[0]
 
     @staticmethod
+    def tap_dump(node, name=None):
+        """Get all TAP interface data from the given node, or data about
+        a specific TAP interface.
+
+        :param node: VPP node to get data from.
+        :param name: Optional name of a specific TAP interface.
+        :type node: dict
+        :type name: str
+        :return: Dictionary of information about a specific TAP interface, or
+        a List of dictionaries containing all TAP data for the given node.
+        :rtype: dict or list
+        """
+        with VatTerminal(node) as vat:
+            response = vat.vat_terminal_exec_cmd_from_template(
+                "tap_dump.vat")
+        if name is None:
+            return response[0]
+        else:
+            for item in response[0]:
+                if name == item['dev_name']:
+                    return item
+            return {}
+
+    @staticmethod
     def create_subinterface(node, interface, sub_id, outer_vlan_id,
                             inner_vlan_id, type_subif):
         """Create sub-interface on node.
diff --git a/resources/libraries/robot/honeycomb/tap.robot b/resources/libraries/robot/honeycomb/tap.robot
new file mode 100644
index 0000000000..f503b60090
--- /dev/null
+++ b/resources/libraries/robot/honeycomb/tap.robot
@@ -0,0 +1,145 @@
+# Copyright (c) 2016 Cisco and/or its affiliates.
+# 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.
+
+*** Settings ***
+| Library | resources.libraries.python.InterfaceUtil
+| ...     | WITH NAME | interfaceCLI
+| Library | resources.libraries.python.honeycomb.HcAPIKwInterfaces.InterfaceKeywords
+| ...     | WITH NAME | InterfaceAPI
+| Documentation | Keywords used to manipulate TAP interfaces.
+
+*** Keywords ***
+| Honeycomb creates TAP interface
+| | [Documentation] | Uses Honeycomb API to configure a new TAP interface.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ... | - settings - Configuration data for TAP. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ... | \| Honeycomb creates TAP interface \
+| | ... | \| ${nodes['DUT1']} \| tap_int1 \| ${{'tap-name':'tap1',\
+| | ... | 'mac':'08:00:27:60:26:ab', 'device-instance':3}} \|
+| | ...
+| | [Arguments] | ${node} | ${interface} | ${settings}
+| | interfaceAPI.Create TAP interface | ${node} | ${interface}
+| | ... | &{settings}
+
+| Honeycomb configures TAP interface
+| | [Documentation] | Uses Honeycomb API to configure an existing TAP interface.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ... | - settings - Configuration data for TAP. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ... | \| Honeycomb configures TAP interface \
+| | ... | \| ${nodes['DUT1']} \| tap_int1 \| ${{'tap-name':'tap1',\
+| | ... | 'mac':'08:00:27:60:26:ab', 'device-instance':3}} \|
+| | ...
+| | [Arguments] | ${node} | ${interface} | ${settings}
+| | interfaceAPI.Configure interface TAP | ${node} | ${interface}
+| | ... | &{settings}
+
+| Honeycomb removes TAP interface
+| | [Documentation] | Uses Honeycomb API to remove a TAP interface.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| Honeycomb removes TAP interface \
+| | ... | \| ${nodes['DUT1']} \| tap_int1 \|
+| | [Arguments] | ${node} | ${interface}
+| | interfaceAPI.Delete interface | ${node} | ${interface}
+
+| TAP configuration from Honeycomb should be
+| | [Documentation] | Retrieves interface TAP configuration through Honeycomb\
+| | ... | and compares with settings supplied in argument.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ... | - settings - Configuration data for TAP. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| TAP configuration from Honeycomb should be \
+| | ... | \| ${nodes['DUT1']} \| tap_int1 \| ${{'tap-name':'tap1',\
+| | ... | 'mac':'08:00:27:60:26:ab', 'device-instance':3}} \|
+| | ...
+| | [Arguments] | ${node} | ${interface} | ${settings}
+| | ${api_data}= | interfaceAPI.Get interface oper data | ${node} | ${interface}
+| | ${api_tap}= | Set Variable | ${api_data['v3po:tap']}
+| | Should be equal | ${api_tap['tap-name']} | ${settings['tap-name']}
+| | ${api_mac}= | Set Variable | ${api_data['phys-address']}
+| | Should be equal | ${api_mac} | ${settings['mac']}
+
+| TAP configuration from VAT should be
+| | [Documentation] | Retrieves interface TAP configuration through VAT and\
+| | ... | compares with settings supplied in argument.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - settings - Configuration data for TAP. Type: dictionary
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| TAP configuration from Honeycomb should be \
+| | ... | \| ${nodes['DUT1']} \| ${{'tap-name':'tap1',\
+| | ... | 'mac':'08:00:27:60:26:ab', 'device-instance':3}} \|
+| | ...
+| | [Arguments] | ${node} | ${interface} | ${settings}
+| | ${vat_data}= | TAP Dump | ${node} | ${interface}
+| | Should be equal | ${vat_data['dev_name']} | ${settings['tap-name']}
+| | ${vat_data}= | VPP Get interface data | ${node}
+# other settings not accessible through VAT commands
+
+| TAP configuration from Honeycomb should be empty
+| | [Documentation] | Attempts to retrieve interface TAP configuration\
+| | ... | through Honeycomb and expects to recieve an empty dictionary.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| TAP configuration from Honeycomb should be empty\
+| | ... | \| ${nodes['DUT1']} \| tap_int1 \|
+| | ...
+| | [Arguments] | ${node} | ${interface}
+| | ${api_data}= | interfaceAPI.Get interface oper data | ${node} | ${interface}
+| | Run keyword and expect error | *KeyError: 'v3po:tap' | Set Variable
+| | ... | ${api_data['v3po:tap']}
+
+| TAP configuration from VAT should be empty
+| | [Documentation] | Attempts to retrieve interface TAP configuration\
+| | ... | through VAT and expects a "no data" error.
+| | ...
+| | ... | *Arguments:*
+| | ... | - node - information about a DUT node. Type: dictionary
+| | ... | - interface - name of an interface on the specified node. Type: string
+| | ...
+| | ... | *Example:*
+| | ...
+| | ... | \| TAP configuration from VAT should be empty\
+| | ... | \| ${nodes['DUT1']} \| tap_int1 \|
+| | ...
+| | [Arguments] | ${node} | ${interface}
+| | Run Keyword And Expect Error | ValueError: No JSON object could be decoded
+| | ... | TAP Dump | ${node} | ${interface}
diff --git a/resources/libraries/robot/honeycomb/vxlan.robot b/resources/libraries/robot/honeycomb/vxlan.robot
index 83a6e120b7..a57c965fa3 100644
--- a/resources/libraries/robot/honeycomb/vxlan.robot
+++ b/resources/libraries/robot/honeycomb/vxlan.robot
@@ -112,7 +112,8 @@
 | | ...
 | | [Arguments] | ${node} | ${interface}
 | | ${api_data}= | interfaceAPI.Get interface oper data | ${node} | ${interface}
-| | Should be empty | ${api_data}
+| | Run keyword and expect error | *KeyError: 'v3po:vxlan' | Set Variable
+| | ... | ${api_data['v3po:vxlan']}
 
 | VxLAN configuration from VAT should be empty
 | | [Documentation] | Attempts to retrieve interface VxLAN configuration\
diff --git a/resources/templates/vat/tap_dump.vat b/resources/templates/vat/tap_dump.vat
new file mode 100644
index 0000000000..8f51f6e23c
--- /dev/null
+++ b/resources/templates/vat/tap_dump.vat
@@ -0,0 +1 @@
+sw_interface_tap_dump
\ No newline at end of file