back-to-back tests: add TG tests

Change-Id: I9d028294deb1e31b6d185deb1c7523e0226a0ada
Signed-off-by: Viliam Luc <vluc@cisco.com>

2 files changed, 106 insertions, 3 deletions

diff --git a/resources/libraries/python/autogen/Regenerator.py b/resources/libraries/python/autogen/Regenerator.py
index 7003d3905d..14a9fd0ddb 100644
--- a/resources/libraries/python/autogen/Regenerator.py
+++ b/resources/libraries/python/autogen/Regenerator.py
@@ -195,6 +195,20 @@ def add_iperf3_testcases(testcase, file_out, tc_kwargs_list):
         file_out.write(testcase.generate(**kwargs))
 
 
+def add_trex_testcases(testcase, file_out, tc_kwargs_list):
+    """Add trex testcases to file.
+
+    :param testcase: Testcase class.
+    :param file_out: File to write testcases to.
+    :param tc_kwargs_list: Key-value pairs used to construct testcases.
+    :type testcase: Testcase
+    :type file_out: file
+    :type tc_kwargs_list: dict
+    """
+    for kwargs in tc_kwargs_list:
+        file_out.write(testcase.generate(**kwargs))
+
+
 def write_default_files(in_filename, in_prolog, kwargs_list):
     """Using given filename and prolog, write all generated suites.
 
@@ -480,6 +494,64 @@ def write_iperf3_files(in_filename, in_prolog, kwargs_list):
         add_iperf3_testcases(testcase, file_out, kwargs_list)
 
 
+def write_trex_files(in_filename, in_prolog, kwargs_list):
+    """Using given filename and prolog, write all generated trex suites.
+
+    :param in_filename: Template filename to derive real filenames from.
+    :param in_prolog: Template content to derive real content from.
+    :param kwargs_list: List of kwargs for add_trex_testcase.
+    :type in_filename: str
+    :type in_prolog: str
+    :type kwargs_list: list of dict
+    """
+    for suite_type in Constants.PERF_TYPE_TO_KEYWORD:
+        tmp_filename = replace_defensively(
+            in_filename, u"ndrpdr", suite_type, 1,
+            u"File name should contain suite type once.", in_filename
+        )
+        tmp_prolog = replace_defensively(
+            in_prolog, u"ndrpdr".upper(), suite_type.upper(), 1,
+            u"Suite type should appear once in uppercase (as tag).",
+            in_filename
+        )
+        tmp_prolog = replace_defensively(
+            tmp_prolog,
+            u"Find NDR and PDR intervals using optimized search",
+            Constants.PERF_TYPE_TO_KEYWORD[suite_type], 1,
+            u"Main search keyword should appear once in suite.",
+            in_filename
+        )
+        tmp_prolog = replace_defensively(
+            tmp_prolog,
+            Constants.PERF_TYPE_TO_SUITE_DOC_VER[u"ndrpdr"],
+            Constants.PERF_TYPE_TO_SUITE_DOC_VER[suite_type],
+            1, u"Exact suite type doc not found.", in_filename
+        )
+        tmp_prolog = replace_defensively(
+            tmp_prolog,
+            Constants.PERF_TYPE_TO_TEMPLATE_DOC_VER[u"ndrpdr"],
+            Constants.PERF_TYPE_TO_TEMPLATE_DOC_VER[suite_type],
+            1, u"Exact template type doc not found.", in_filename
+        )
+        _, suite_id, suite_tag = get_iface_and_suite_ids(tmp_filename)
+        testcase = Testcase.trex(suite_id)
+        for nic_name in Constants.NIC_NAME_TO_CODE:
+            out_filename = replace_defensively(
+                tmp_filename, u"10ge2p1x710",
+                Constants.NIC_NAME_TO_CODE[nic_name], 1,
+                u"File name should contain NIC code once.", in_filename
+            )
+            out_prolog = replace_defensively(
+                tmp_prolog, u"Intel-X710", nic_name, 2,
+                u"NIC name should appear twice (tag and variable).",
+                in_filename
+            )
+            check_suite_tag(suite_tag, out_prolog)
+            with open(out_filename, u"wt") as file_out:
+                file_out.write(out_prolog)
+                add_trex_testcases(testcase, file_out, kwargs_list)
+
+
 def write_device_files(in_filename, in_prolog, kwargs_list):
     """Using given filename and prolog, write all generated suites.
 
@@ -637,6 +709,13 @@ class Regenerator:
             {u"frame_size": min_frame_size, u"phy_cores": 0}
         ]
 
+        trex_kwargs_list = [
+            {u"frame_size": min_frame_size},
+            {u"frame_size": 1518},
+            {u"frame_size": 9000},
+            {u"frame_size": u"IMIX_v4_1"}
+        ]
+
         for in_filename in glob(pattern):
             if not self.quiet:
                 print(
@@ -656,6 +735,9 @@ class Regenerator:
                 in_prolog = u"".join(
                     file_in.read().partition(u"*** Test Cases ***")[:-1]
                 )
+            if "-tg-" in in_filename:
+                write_trex_files(in_filename, in_prolog, trex_kwargs_list)
+                continue
             if in_filename.endswith(u"-ndrpdr.robot"):
                 if u"scheduler" in in_filename:
                     write_default_files(
diff --git a/resources/libraries/python/autogen/Testcase.py b/resources/libraries/python/autogen/Testcase.py
index 643d32a3cb..32fc5014cc 100644
--- a/resources/libraries/python/autogen/Testcase.py
+++ b/resources/libraries/python/autogen/Testcase.py
@@ -33,16 +33,17 @@ class Testcase:
         """
         self.template = Template(template_string)
 
-    def generate(self, frame_size, phy_cores):
+    def generate(self, frame_size, phy_cores=None):
         """Return string of test case code with placeholders filled.
 
         Fail if there are placeholders left unfilled.
         It is not required for all placeholders to be present in template.
 
         :param frame_size: Imix string or numeric frame size. Example: 74.
-        :param phy_cores: Number of physical cores to use. Example: 2.
+        :param phy_cores: Number of physical cores to use. Example: 2. It can
+            be None in n2n testcases.
         :type frame_size: str or int
-        :type phy_cores: int or str
+        :type phy_cores: int, str or None
         :returns: Filled template, usable as test case code.
         :rtype: str
         """
@@ -57,6 +58,8 @@ class Testcase:
                 u"frame_num": str(frame_size),
                 u"frame_str": u"IMIX"
             }
+        if phy_cores is None:
+            return self.template.substitute(subst_dict)
         cores_str = str(phy_cores)
         cores_num = int(cores_str)
         subst_dict.update(
@@ -136,3 +139,21 @@ class Testcase:
 | | frame_size=${{frame_num}} | phy_cores=${{cores_num}}
 '''
         return cls(template_string)
+
+    @classmethod
+    def trex(cls, suite_id):
+        """Factory method for creating "trex" testcase objects.
+
+        Testcase name will contain frame size, but not core count.
+
+        :param suite_id: Part of suite name to distinguish from other suites.
+        :type suite_id: str
+        :returns: Instance for generating testcase text of this type.
+        :rtype: Testcase
+        """
+        template_string = f'''
+| ${{frame_str}}--{suite_id}
+| | [Tags] | ${{frame_str}}
+| | frame_size=${{frame_num}}
+'''
+        return cls(template_string)