[VVP] Adding preload generation functionality

preload.py discovers and loads implementations of
AbstractPreloadGenerator from any module on sys.path prefixed with
preload_*

Initial support is provided for VNF-API and GR-API.  The templates
will provide a guide for users to provide their values.

Known limitations:
- No support for Contrail.  Preload will be created, but contrail
  parameters will be skipped. This will be addressed in the future.

Issue-ID: VVP-227
Signed-off-by: stark, steven <steven.stark@att.com>
Change-Id: I081d50ac379062fbf1bffebd687e920220d32571
Signed-off-by: Lovett, Trevor <trevor.lovett@att.com>
Signed-off-by: Lovett, Trevor (tl2972) <tl2972@att.com>

1 files changed, 13 insertions, 14 deletions

diff --git a/ice_validator/tests/conftest.py b/ice_validator/tests/conftest.py
index 5653cca..f4b3857 100644
--- a/ice_validator/tests/conftest.py
+++ b/ice_validator/tests/conftest.py
@@ -43,6 +43,10 @@ import json
 import os
 import re
 import time
+
+from preload import create_preloads
+from tests.helpers import get_output_dir
+
 try:
     from html import escape
 except ImportError:
@@ -95,18 +99,6 @@ COLLECTION_FAILURES = []
 ALL_RESULTS = []
 
 
-def get_output_dir(config):
-    """
-    Retrieve the output directory for the reports and create it if necessary
-    :param config: pytest configuration
-    :return: output directory as string
-    """
-    output_dir = config.option.output_dir or DEFAULT_OUTPUT_DIR
-    if not os.path.exists(output_dir):
-        os.makedirs(output_dir, exist_ok=True)
-    return output_dir
-
-
 def extract_error_msg(rep):
     """
     If a custom error message was provided, then extract it otherwise
@@ -352,6 +344,12 @@ def pytest_sessionfinish(session, exitstatus):
     )
 
 
+def pytest_terminal_summary(terminalreporter, exitstatus):
+    # Ensures all preload information and warnings appear after
+    # test results
+    create_preloads(terminalreporter.config, exitstatus)
+
+
 # noinspection PyUnusedLocal
 def pytest_collection_modifyitems(session, config, items):
     """
@@ -749,8 +747,9 @@ def generate_html_report(outpath, categories, template_path, failures):
             {
                 "file_links": make_href(failure.files, template_path),
                 "test_id": failure.test_id,
-                "error_message": escape(failure.error_message).replace("\n",
-                                                                       "<br/><br/>"),
+                "error_message": escape(failure.error_message).replace(
+                    "\n", "<br/><br/>"
+                ),
                 "raw_output": escape(failure.raw_output),
                 "requirements": docutils.core.publish_parts(
                     writer_name="html", source=failure.requirement_text(reqs)