[test.dart] Complain if there is non-utf8 formatted data in test output

tests/standalone/standalone.status

 # Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
+# This test checks that the test runner correctly detects and reports non-utf8
+# output from a test.
+io/non_utf8_output_test: NonUtf8Output, OK
+
 io/raw_socket_test: Pass, RuntimeError # Issue 28288
 io/http_close_test: Pass, RuntimeError # Issue 28380
 packages_file_test: Skip # Issue 26715
 packages_file_test/none: Skip   # contains no tests.
 
 package/invalid_uri_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/packages_file_strange_formatting/empty_package_dir_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/empty_packages_file/empty_packages_file_discovery_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/empty_packages_file/empty_packages_file_option_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/invalid/invalid_package_name_test: RuntimeError, CompileTimeError # Errors intentionally
@@ skipping 366 matching lines @@
 io/secure_socket_alpn_test: RuntimeError
 io/secure_bad_certificate_test: RuntimeError
 io/secure_server_socket_test: RuntimeError
 io/secure_client_server_test: RuntimeError
 io/socket_upgrade_to_secure_test: RuntimeError
 io/secure_client_raw_server_test: RuntimeError
 io/secure_socket_test: RuntimeError
 io/raw_secure_socket_test: RuntimeError
 io/https_bad_certificate_test: RuntimeError
 io/secure_server_closing_test: RuntimeError
-io/console_unicode_test: Skip # https://github.com/dart-lang/sdk/issues/28872
+# The Android command runner doesn't correctly handle non-UTF8 formatted output.
+# https://github.com/dart-lang/sdk/issues/28872
+io/non_utf8_output_test: Skip
 
 [ $system == android && $runtime == dart_precompiled && $mode == release && $arch == arm]
 io/stdout_stderr_non_blocking_test: Pass, Timeout # Issue 28426
 
 [ $runtime == vm || $runtime == dart_precompiled ]
 deferred_transitive_import_error_test: Skip # Contains intentional errors.
 
 [ $hot_reload || $hot_reload_rollback ]
 deferred_transitive_import_error_test: Crash # Uses deferred imports.
 package/*: SkipByDesign # Launches VMs in interesting ways.
 io/raw_datagram_read_all_test: Pass, Fail # Timing dependent.
 io/test_runner_test: Pass, Slow # Slow.
 io/skipping_dart2js_compilations_test: Pass, Slow # Slow.
 
 [ $builder_tag == no_ipv6 ]
 io/raw_datagram_socket_test: SkipByDesign
 io/socket_source_address_test: SkipByDesign
 io/socket_bind_test: SkipByDesign
 io/http_proxy_advanced_test: SkipByDesign
 io/http_ipv6_test: SkipByDesign
 io/socket_ipv6_test: SkipByDesign
 io/socket_info_ipv6_test: SkipByDesign
 
 [ $builder_tag == asan && $arch == x64 ]
 io/process_detached_test: Pass, Slow
 io/named_pipe_script_test: RuntimeError