Introduce simple VAT history per test case

- print list of VAT commands executed per DUT node during the test
  case in the func test teardown

Change-Id: I18a750ebfb7560eff9f5c4f0826ef84c3f64b4a8
Signed-off-by: Jan Gelety <jgelety@cisco.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/resources/libraries/python/VatHistory.py b/resources/libraries/python/VatHistory.py
new file mode 100644
index 0000000000..caa3de50f2
--- /dev/null
+++ b/resources/libraries/python/VatHistory.py
@@ -0,0 +1,93 @@
+# 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.
+
+"""DUT VAT command history setup library."""
+
+from robot.api import logger
+
+from resources.libraries.python.topology import NodeType, DICT__nodes
+
+__all__ = ["DICT__duts_vat_history", "VatHistory"]
+
+
+def setup_vat_history(nodes):
+    duts_vat_history = {}
+    for node in nodes.values():
+        if node['type'] == NodeType.DUT:
+            duts_vat_history[node['host']] = []
+    return duts_vat_history
+
+DICT__duts_vat_history = setup_vat_history(DICT__nodes)
+
+
+class VatHistory(object):
+    """Contains methods to set up DUT VAT command history."""
+
+    @staticmethod
+    def reset_vat_history(node):
+        """Reset VAT command history for DUT node.
+
+        :param node: DUT node to reset VAT command history for.
+        :type node: dict
+        """
+        if node['type'] == NodeType.DUT:
+            DICT__duts_vat_history[node['host']] = []
+
+    @staticmethod
+    def reset_vat_history_on_all_duts(nodes):
+        """Reset VAT command history for all DUT nodes.
+
+        :param nodes: Nodes to reset VAT command history for.
+        :type nodes: dict
+        """
+        for node in nodes.values():
+            if node['type'] == NodeType.DUT:
+                VatHistory.reset_vat_history(node)
+
+    @staticmethod
+    def show_vat_history(node):
+        """Show VAT command history for DUT node.
+
+        :param node: DUT node to show VAT command history for.
+        :type node: dict
+        """
+        if node['type'] == NodeType.DUT:
+            sequence = "\nno VAT command executed"\
+                if len(DICT__duts_vat_history[node['host']]) == 0\
+                else "".join("\n{}".format(cmd)
+                             for cmd in DICT__duts_vat_history[node['host']])
+            logger.trace("{0} VAT command history:{1}\n".
+                         format(node['host'], sequence))
+
+    @staticmethod
+    def show_vat_history_on_all_duts(nodes):
+        """Show VAT command history for all DUT nodes.
+
+        :param nodes: Nodes to show VAT command history for.
+        :type nodes: dict
+        """
+        for node in nodes.values():
+            if node['type'] == NodeType.DUT:
+                VatHistory.show_vat_history(node)
+
+    @staticmethod
+    def add_to_vat_history(node, cmd):
+        """Add command to VAT command history on DUT node.
+
+        :param node: DUT node to add command to VAT command history for.
+        :param cmd: Command to be added to VAT command history.
+        :type node: dict
+        :type cmd: str
+        """
+        if node['type'] == NodeType.DUT:
+            DICT__duts_vat_history[node['host']].append(cmd)