Add basic unit tests for library.sh

Summary:
We have been using with_stripped_logs more to clean up the output of tests.

Unfortunately it strips the exit code, which can make debugging harder on failure. Annoingly, it also makes it hard to add to existing tests.

This diff adds failing unit tests for with_stripped_logs, as well as a few related ones. The next diff will fix the bug.

Reviewed By: clara-9

Differential Revision: D68948260

fbshipit-source-id: 47c178f3cd459106968e935db5b802ecc5e9b3cd

eden/mononoke/tests/integration/test-library-unit-tests.t

@@ -0,0 +1,82 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License found in the LICENSE file in the root
+# directory of this source tree.
+
+  $ . "${TEST_FIXTURES}/library.sh"
+  $ setup_common_config
+
+# mononoke_admin ground truth: exit code is only logged on failure
+  $ mononoke_admin list-repos
+  0 repo
+  $ mononoke_admin invalid
+  error: unrecognized subcommand 'invalid'
+
+  Usage: admin [OPTIONS] <--config-path <CONFIG_PATH>|--config-tier <CONFIG_TIER>|--prod|--git-config> <COMMAND>
+
+  For more information, try '--help'.
+  [2]
+
+
+# mononoke_testtool ground truth: exit code is only logged on failure
+  $ testtool_drawdag -R repo << EOF
+  > A-B-C
+  > # bookmark: C heads/master_bookmark
+  > EOF
+  A=aa53d24251ff3f54b1b2c29ae02826701b2abeb0079f1bb13b8434b54cd87675
+  B=f8c75e41a0c4d29281df765f39de47bca1dcadfdc55ada4ccc2f6df567201658
+  C=e32a1e342cdb1e38e88466b4c1a01ae9f410024017aa21dc0a1c5da6b3963bf2
+  $ mononoke_testtool invalid
+  error: unrecognized subcommand 'invalid'
+
+  Usage: testtool [OPTIONS] <--config-path <CONFIG_PATH>|--config-tier <CONFIG_TIER>|--prod|--git-config> <COMMAND>
+
+  For more information, try '--help'.
+  [2]
+
+
+# strip_glog removes what we expect
+  $ cat << EOF | strip_glog
+  > some
+  > I0131 01:16:33.803668 4035520 Logger.h:335] [WARNING] WhenceScribeLogged is overwritten to SANDBOX. https://fburl.com/cpp-logger-whence-logged
+  > plain
+  > E0130 16:56:31.642324 98667 Ods3Publisher.cpp:173] [ODS3 SDK] ODS3 SDK has dropped some samples. This is NOT the cause of errors in your application. 0 samples were dropped during observations. 16 samples were dropped due to publishing. One publishing error is: apache::thrift::transport::TTransportException: Channel is !good()
+  > output
+  > EOF
+  some
+  [WARNING] WhenceScribeLogged is overwritten to SANDBOX. https://fburl.com/cpp-logger-whence-logged
+  plain
+  output
+
+# strip_glog will strip the exit code
+  $ mononoke_admin invalid 2>&1 | strip_glog
+  error: unrecognized subcommand 'invalid'
+
+  Usage: admin [OPTIONS] <--config-path <CONFIG_PATH>|--config-tier <CONFIG_TIER>|--prod|--git-config> <COMMAND>
+
+  For more information, try '--help'.
+
+
+# with_stripped_logs removes what we expect
+  $ with_stripped_logs cat << EOF
+  > some
+  > I0131 01:16:33.803668 4035520 Logger.h:335] [WARNING] WhenceScribeLogged is overwritten to SANDBOX. https://fburl.com/cpp-logger-whence-logged
+  > plain
+  > E0130 16:56:31.642324 98667 Ods3Publisher.cpp:173] [ODS3 SDK] ODS3 SDK has dropped some samples. This is NOT the cause of errors in your application. 0 samples were dropped during observations. 16 samples were dropped due to publishing. One publishing error is: apache::thrift::transport::TTransportException: Channel is !good()
+  > output
+  > EOF
+  some
+  [WARNING] WhenceScribeLogged is overwritten to SANDBOX. https://fburl.com/cpp-logger-whence-logged
+  plain
+  output
+
+# with_stripped_logs doesn't propagate the exit code correctly
+  $ with_stripped_logs mononoke_admin invalid
+  error: unrecognized subcommand 'invalid'
+
+  Usage: admin [OPTIONS] <--config-path <CONFIG_PATH>|--config-tier <CONFIG_TIER>|--prod|--git-config> <COMMAND>
+
+  For more information, try '--help'.
+
+