1 # Copyright (c) 2019 Cisco and/or its affiliates.
2 # Licensed under the Apache License, Version 2.0 (the "License");
3 # you may not use this file except in compliance with the License.
4 # You may obtain a copy of the License at:
6 # http://www.apache.org/licenses/LICENSE-2.0
8 # Unless required by applicable law or agreed to in writing, software
9 # distributed under the License is distributed on an "AS IS" BASIS,
10 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 # See the License for the specific language governing permissions and
12 # limitations under the License.
14 """Module defining utilities for test directory regeneration."""
16 from __future__ import print_function
22 from .DefaultTestcase import DefaultTestcase
25 # Copied from https://stackoverflow.com/a/14981125
26 def eprint(*args, **kwargs):
27 """Print to stderr."""
28 print(*args, file=sys.stderr, **kwargs)
31 class Regenerator(object):
32 """Class containing file generating methods."""
34 def __init__(self, testcase_class=DefaultTestcase, quiet=True):
35 """Initialize Testcase class to use.
37 TODO: See the type doc for testcase_class?
38 It implies the design is wrong. Fix it.
39 Easiest: Hardcode Regenerator to use DefaultTestcase only.
41 :param testcase_class: Subclass of DefaultTestcase for generation.
42 Default: DefaultTestcase
43 :param quiet: Reduce log prints (to stderr) when True (default).
44 :type testcase_class: subclass of DefaultTestcase accepting suite_id
47 self.testcase_class = testcase_class
50 def regenerate_glob(self, pattern, protocol="ip4", tc_kwargs_list=None):
51 """Regenerate files matching glob pattern based on arguments.
53 In the current working directory, find all files matching
54 the glob pattern. Use testcase template (from init) to regenerate
55 test cases, autonumbering them, taking arguments from list.
56 If the list is None, use default list, which depends on ip6 usage.
58 Log-like prints are emited to sys.stderr.
60 :param pattern: Glob pattern to select files. Example: *-ndrpdr.robot
61 :param is_ip6: Flag determining minimal frame size. Default: False
62 :param tc_kwargs_list: Arguments defining the testcases. Default: None
63 When None, default list is used.
64 List item is a dict, argument names are keys.
65 The initialized testcase_class should accept those, and "num".
66 DefaultTestcase accepts "framesize" and "phy_cores".
69 :type tc_kwargs_list: list of tuple or None
72 protocol_to_min_framesize = {
75 "vxlan+ip4": 114 # What is the real minimum for latency stream?
78 def get_iface_and_suite_id(filename):
79 """Get interface and suite ID.
81 :param filename: Suite file.
83 :returns: Interface ID, Suite ID.
86 dash_split = filename.split("-", 1)
87 if len(dash_split[0]) <= 4:
88 # It was something like "2n1l", we need one more split.
89 dash_split = dash_split[1].split("-", 1)
90 return dash_split[0], dash_split[1].split(".", 1)[0]
92 def add_testcase(testcase, iface, suite_id, file_out, num, **kwargs):
93 """Add testcase to file.
95 :param testcase: Testcase class.
96 :param iface: Interface.
97 :param suite_id: Suite ID.
98 :param file_out: File to write testcases to.
99 :param num: Testcase number.
100 :param kwargs: Key-value pairs used to construct testcase.
101 :type testcase: Testcase
107 :returns: Next testcase number.
110 # TODO: Is there a better way to disable some combinations?
111 if kwargs["framesize"] == 9000 and "vic1227" in iface:
112 # Not supported in HW.
114 elif kwargs["framesize"] == 9000 and "avf" in suite_id:
115 # Not supported by AVF driver.
116 # https://git.fd.io/vpp/tree/src/plugins/avf/README.md
118 elif ("soak" in suite_id and
119 (kwargs["phy_cores"] != 1
120 or kwargs["framesize"] in (1518, 9000, "IMIX_v4_1"))):
121 # Soak test take too long, do not risk other than tc01.
124 file_out.write(testcase.generate(num=num, **kwargs))
127 def add_testcases(testcase, iface, suite_id, file_out, tc_kwargs_list):
128 """Add testcases to file.
130 :param testcase: Testcase class.
131 :param iface: Interface.
132 :param suite_id: Suite ID.
133 :param file_out: File to write testcases to.
134 :param tc_kwargs_list: Key-value pairs used to construct testcases.
135 :type testcase: Testcase
139 :type tc_kwargs_list: dict
142 for tc_kwargs in tc_kwargs_list:
143 num = add_testcase(testcase, iface, suite_id, file_out, num,
147 eprint("Regenerator starts at {cwd}".format(cwd=getcwd()))
148 min_framesize = protocol_to_min_framesize[protocol]
149 kwargs_list = tc_kwargs_list if tc_kwargs_list else [
150 {"framesize": min_framesize, "phy_cores": 1},
151 {"framesize": min_framesize, "phy_cores": 2},
152 {"framesize": min_framesize, "phy_cores": 4},
153 {"framesize": 1518, "phy_cores": 1},
154 {"framesize": 1518, "phy_cores": 2},
155 {"framesize": 1518, "phy_cores": 4},
156 {"framesize": 9000, "phy_cores": 1},
157 {"framesize": 9000, "phy_cores": 2},
158 {"framesize": 9000, "phy_cores": 4},
159 {"framesize": "IMIX_v4_1", "phy_cores": 1},
160 {"framesize": "IMIX_v4_1", "phy_cores": 2},
161 {"framesize": "IMIX_v4_1", "phy_cores": 4}
163 for filename in glob(pattern):
165 eprint("Regenerating filename:", filename)
166 with open(filename, "r") as file_in:
167 text = file_in.read()
168 text_prolog = "".join(text.partition("*** Test Cases ***")[:-1])
169 iface, suite_id = get_iface_and_suite_id(filename)
170 testcase = self.testcase_class(suite_id)
171 with open(filename, "w") as file_out:
172 file_out.write(text_prolog)
173 add_testcases(testcase, iface, suite_id, file_out, kwargs_list)
175 eprint("Regenerator ends.")
176 eprint() # To make autogen check output more readable.