[Tarantool-patches] [PATCH v1] Add option to update file with reference output

[Sergey Bronnikov <sergeyb@tarantool.org>]

In case of test failure test-run.py create a file .reject with actual
test output and one need to move .reject file to .result manually when
test has a valid behaviout. With option --update-ref-output test-run.py
will do it automagically.

Fixes: #4654

GitHub branch: https://github.com/tarantool/test-run/tree/ligurio/gh-4654-update-ref-output

---
 lib/options.py |  8 ++++++++
 lib/test.py    | 19 +++++++++++++++----
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/lib/options.py b/lib/options.py
index 8bacb4a..174a62f 100644
--- a/lib/options.py
+++ b/lib/options.py
@@ -201,6 +201,14 @@ class Options:
                 help="""Run the server under 'luacov'.
                 Default: false.""")
 
+        parser.add_argument(
+                "--update-ref-output",
+                dest="update_reference_output",
+                action="store_true",
+                default=False,
+                help="""Update file with reference output (.reject) in case of fail
+                and set status pass. Default: false.""")
+
         # XXX: We can use parser.parse_intermixed_args() on
         # Python 3.7 to understand commands like
         # ./test-run.py foo --exclude bar baz
diff --git a/lib/test.py b/lib/test.py
index 3e93af3..396bb89 100644
--- a/lib/test.py
+++ b/lib/test.py
@@ -15,6 +15,7 @@ except ImportError:
     from StringIO import StringIO
 
 import lib
+from lib.options import Options
 from lib.colorer import color_stdout
 from lib.utils import non_empty_valgrind_logs
 from lib.utils import print_tail_n
@@ -242,23 +243,33 @@ class Test(object):
             color_stdout("[ new ]\n", schema='test_new')
         else:
             has_result = os.path.exists(self.tmp_result)
+            update_reference = lib.Options().args.update_reference_output
             if has_result:
-                shutil.copy(self.tmp_result, self.reject)
-            short_status = 'fail'
+                if update_reference:
+                    reject_dest = self.result
+                else:
+                    reject_dest = self.reject
+                shutil.copy(self.tmp_result, reject_dest)
+            if update_reference:
+                short_status = 'pass'
+            else:
+                short_status = 'fail'
             color_stdout("[ fail ]\n", schema='test_fail')
 
             where = ""
             if not self.is_crash_reported and not has_result:
                 color_stdout('\nCannot open %s\n' % self.tmp_result,
                              schema='error')
-            elif not self.is_crash_reported and not self.is_executed_ok:
+            elif not self.is_crash_reported and not self.is_executed_ok and \
+                not update_reference:
                 self.print_diagnostics(self.reject,
                                        "Test failed! Output from reject file "
                                        "{0}:\n".format(self.reject))
                 server.print_log(15)
                 where = ": test execution aborted, reason " \
                         "'{0}'".format(diagnostics)
-            elif not self.is_crash_reported and not self.is_equal_result:
+            elif not self.is_crash_reported and not self.is_equal_result and \
+                not update_reference:
                 self.print_unidiff()
                 server.print_log(15)
                 where = ": wrong test output"
-- 
2.23.0


-- 
sergeyb@