Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1097 insertions, 0 deletions

diff --git a/testing/mozbase/mozlog/tests/test_structured.py b/testing/mozbase/mozlog/tests/test_structured.py
new file mode 100644
index 0000000000..f97f3baf42
--- /dev/null
+++ b/testing/mozbase/mozlog/tests/test_structured.py
@@ -0,0 +1,1097 @@
+# -*- coding: utf-8 -*-
+
+import argparse
+import json
+import optparse
+import os
+import sys
+import unittest
+
+import mozfile
+import mozunit
+import six
+from mozlog import commandline, formatters, handlers, reader, stdadapter, structuredlog
+from six import StringIO
+
+
+class TestHandler(object):
+    def __init__(self):
+        self.items = []
+
+    def __call__(self, data):
+        self.items.append(data)
+
+    @property
+    def last_item(self):
+        return self.items[-1]
+
+    @property
+    def empty(self):
+        return not self.items
+
+
+class BaseStructuredTest(unittest.TestCase):
+    def setUp(self):
+        self.logger = structuredlog.StructuredLogger("test")
+        self.handler = TestHandler()
+        self.logger.add_handler(self.handler)
+
+    def pop_last_item(self):
+        return self.handler.items.pop()
+
+    def assert_log_equals(self, expected, actual=None):
+        if actual is None:
+            actual = self.pop_last_item()
+
+        all_expected = {"pid": os.getpid(), "thread": "MainThread", "source": "test"}
+        specials = set(["time"])
+
+        all_expected.update(expected)
+        for key, value in six.iteritems(all_expected):
+            self.assertEqual(actual[key], value)
+
+        self.assertEqual(set(all_expected.keys()) | specials, set(actual.keys()))
+
+
+class TestStatusHandler(BaseStructuredTest):
+    def setUp(self):
+        super(TestStatusHandler, self).setUp()
+        self.handler = handlers.StatusHandler()
+        self.logger.add_handler(self.handler)
+
+    def test_failure_run(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status("test1", "sub1", status="PASS")
+        self.logger.test_status("test1", "sub2", status="TIMEOUT")
+        self.logger.test_status(
+            "test1", "sub3", status="FAIL", expected="PASS", known_intermittent=["FAIL"]
+        )
+        self.logger.test_end("test1", status="OK")
+        self.logger.suite_end()
+        summary = self.handler.summarize()
+        self.assertIn("TIMEOUT", summary.unexpected_statuses)
+        self.assertEqual(1, summary.unexpected_statuses["TIMEOUT"])
+        self.assertIn("PASS", summary.expected_statuses)
+        self.assertEqual(1, summary.expected_statuses["PASS"])
+        self.assertIn("OK", summary.expected_statuses)
+        self.assertEqual(1, summary.expected_statuses["OK"])
+        self.assertIn("FAIL", summary.expected_statuses)
+        self.assertEqual(1, summary.expected_statuses["FAIL"])
+        self.assertIn("FAIL", summary.known_intermittent_statuses)
+        self.assertEqual(1, summary.known_intermittent_statuses["FAIL"])
+        self.assertEqual(3, summary.action_counts["test_status"])
+        self.assertEqual(1, summary.action_counts["test_end"])
+
+    def test_precondition_failed_run(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_end("test1", status="PRECONDITION_FAILED")
+        self.logger.test_start("test2")
+        self.logger.test_status("test2", "sub1", status="PRECONDITION_FAILED")
+        self.logger.test_end("test2", status="OK")
+        self.logger.suite_end()
+        summary = self.handler.summarize()
+        self.assertEqual(1, summary.expected_statuses["OK"])
+        self.assertEqual(2, summary.unexpected_statuses["PRECONDITION_FAILED"])
+
+    def test_error_run(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.error("ERRR!")
+        self.logger.test_end("test1", status="OK")
+        self.logger.test_start("test2")
+        self.logger.test_end("test2", status="OK")
+        self.logger.suite_end()
+        summary = self.handler.summarize()
+        self.assertIn("ERROR", summary.log_level_counts)
+        self.assertEqual(1, summary.log_level_counts["ERROR"])
+        self.assertIn("OK", summary.expected_statuses)
+        self.assertEqual(2, summary.expected_statuses["OK"])
+
+
+class TestSummaryHandler(BaseStructuredTest):
+    def setUp(self):
+        super(TestSummaryHandler, self).setUp()
+        self.handler = handlers.SummaryHandler()
+        self.logger.add_handler(self.handler)
+
+    def test_failure_run(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status("test1", "sub1", status="PASS")
+        self.logger.test_status("test1", "sub2", status="TIMEOUT")
+        self.logger.assertion_count("test1", 5, 1, 10)
+        self.logger.assertion_count("test1", 5, 10, 15)
+        self.logger.test_end("test1", status="OK")
+        self.logger.suite_end()
+
+        counts = self.handler.current["counts"]
+        self.assertIn("timeout", counts["subtest"]["unexpected"])
+        self.assertEqual(1, counts["subtest"]["unexpected"]["timeout"])
+        self.assertIn("pass", counts["subtest"]["expected"])
+        self.assertEqual(1, counts["subtest"]["expected"]["pass"])
+        self.assertIn("ok", counts["test"]["expected"])
+        self.assertEqual(1, counts["test"]["expected"]["ok"])
+        self.assertIn("pass", counts["assert"]["unexpected"])
+        self.assertEqual(1, counts["assert"]["unexpected"]["pass"])
+        self.assertIn("fail", counts["assert"]["expected"])
+        self.assertEqual(1, counts["assert"]["expected"]["fail"])
+
+        logs = self.handler.current["unexpected_logs"]
+        self.assertEqual(1, len(logs))
+        self.assertIn("test1", logs)
+        self.assertEqual(1, len(logs["test1"]))
+        self.assertEqual("sub2", logs["test1"][0]["subtest"])
+
+    def test_precondition_failed_run(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status("test1", "sub1", status="PASS")
+        self.logger.test_end("test1", status="PRECONDITION_FAILED")
+        self.logger.test_start("test2")
+        self.logger.test_status("test2", "sub1", status="PRECONDITION_FAILED")
+        self.logger.test_status("test2", "sub2", status="PRECONDITION_FAILED")
+        self.logger.test_end("test2", status="OK")
+        self.logger.suite_end()
+
+        counts = self.handler.current["counts"]
+        self.assertIn("precondition_failed", counts["test"]["unexpected"])
+        self.assertEqual(1, counts["test"]["unexpected"]["precondition_failed"])
+        self.assertIn("pass", counts["subtest"]["expected"])
+        self.assertEqual(1, counts["subtest"]["expected"]["pass"])
+        self.assertIn("ok", counts["test"]["expected"])
+        self.assertEqual(1, counts["test"]["expected"]["ok"])
+        self.assertIn("precondition_failed", counts["subtest"]["unexpected"])
+        self.assertEqual(2, counts["subtest"]["unexpected"]["precondition_failed"])
+
+
+class TestStructuredLog(BaseStructuredTest):
+    def test_suite_start(self):
+        self.logger.suite_start(["test"], "logtest")
+        self.assert_log_equals(
+            {"action": "suite_start", "name": "logtest", "tests": {"default": ["test"]}}
+        )
+        self.logger.suite_end()
+
+    def test_suite_end(self):
+        self.logger.suite_start([])
+        self.logger.suite_end()
+        self.assert_log_equals({"action": "suite_end"})
+
+    def test_start(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.assert_log_equals({"action": "test_start", "test": "test1"})
+
+        self.logger.test_start(("test1", "==", "test1-ref"), path="path/to/test")
+        self.assert_log_equals(
+            {
+                "action": "test_start",
+                "test": ("test1", "==", "test1-ref"),
+                "path": "path/to/test",
+            }
+        )
+        self.logger.suite_end()
+
+    def test_start_inprogress(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_start("test1")
+        self.assert_log_equals(
+            {
+                "action": "log",
+                "message": "test_start for test1 logged while in progress.",
+                "level": "ERROR",
+            }
+        )
+        self.logger.suite_end()
+
+    def test_status(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status(
+            "test1", "subtest name", "fail", expected="FAIL", message="Test message"
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "subtest": "subtest name",
+                "status": "FAIL",
+                "message": "Test message",
+                "test": "test1",
+            }
+        )
+        self.logger.test_end("test1", "OK")
+        self.logger.suite_end()
+
+    def test_status_1(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status("test1", "subtest name", "fail")
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "subtest": "subtest name",
+                "status": "FAIL",
+                "expected": "PASS",
+                "test": "test1",
+            }
+        )
+        self.logger.test_end("test1", "OK")
+        self.logger.suite_end()
+
+    def test_status_2(self):
+        self.assertRaises(
+            ValueError,
+            self.logger.test_status,
+            "test1",
+            "subtest name",
+            "XXXUNKNOWNXXX",
+        )
+
+    def test_status_extra(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status(
+            "test1", "subtest name", "FAIL", expected="PASS", extra={"data": 42}
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "subtest": "subtest name",
+                "status": "FAIL",
+                "expected": "PASS",
+                "test": "test1",
+                "extra": {"data": 42},
+            }
+        )
+        self.logger.test_end("test1", "OK")
+        self.logger.suite_end()
+
+    def test_status_stack(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status(
+            "test1",
+            "subtest name",
+            "FAIL",
+            expected="PASS",
+            stack="many\nlines\nof\nstack",
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "subtest": "subtest name",
+                "status": "FAIL",
+                "expected": "PASS",
+                "test": "test1",
+                "stack": "many\nlines\nof\nstack",
+            }
+        )
+        self.logger.test_end("test1", "OK")
+        self.logger.suite_end()
+
+    def test_status_known_intermittent(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status(
+            "test1", "subtest name", "fail", known_intermittent=["FAIL"]
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "subtest": "subtest name",
+                "status": "FAIL",
+                "expected": "PASS",
+                "known_intermittent": ["FAIL"],
+                "test": "test1",
+            }
+        )
+        self.logger.test_end("test1", "OK")
+        self.logger.suite_end()
+
+    def test_status_not_started(self):
+        self.logger.test_status("test_UNKNOWN", "subtest", "PASS")
+        self.assertTrue(
+            self.pop_last_item()["message"].startswith(
+                "test_status for test_UNKNOWN logged while not in progress. Logged with data: {"
+            )
+        )
+
+    def test_remove_optional_defaults(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status(
+            "test1", "subtest name", "fail", message=None, stack=None
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "subtest": "subtest name",
+                "status": "FAIL",
+                "expected": "PASS",
+                "test": "test1",
+            }
+        )
+        self.logger.test_end("test1", "OK")
+        self.logger.suite_end()
+
+    def test_remove_optional_defaults_raw_log(self):
+        self.logger.log_raw({"action": "suite_start", "tests": [1], "name": None})
+        self.assert_log_equals({"action": "suite_start", "tests": {"default": ["1"]}})
+        self.logger.suite_end()
+
+    def test_end(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_end("test1", "fail", message="Test message")
+        self.assert_log_equals(
+            {
+                "action": "test_end",
+                "status": "FAIL",
+                "expected": "OK",
+                "message": "Test message",
+                "test": "test1",
+            }
+        )
+        self.logger.suite_end()
+
+    def test_end_1(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_end("test1", "PASS", expected="PASS", extra={"data": 123})
+        self.assert_log_equals(
+            {
+                "action": "test_end",
+                "status": "PASS",
+                "extra": {"data": 123},
+                "test": "test1",
+            }
+        )
+        self.logger.suite_end()
+
+    def test_end_2(self):
+        self.assertRaises(ValueError, self.logger.test_end, "test1", "XXXUNKNOWNXXX")
+
+    def test_end_stack(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_end(
+            "test1", "PASS", expected="PASS", stack="many\nlines\nof\nstack"
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_end",
+                "status": "PASS",
+                "test": "test1",
+                "stack": "many\nlines\nof\nstack",
+            }
+        )
+        self.logger.suite_end()
+
+    def test_end_no_start(self):
+        self.logger.test_end("test1", "PASS", expected="PASS")
+        self.assertTrue(
+            self.pop_last_item()["message"].startswith(
+                "test_end for test1 logged while not in progress. Logged with data: {"
+            )
+        )
+        self.logger.suite_end()
+
+    def test_end_twice(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test2")
+        self.logger.test_end("test2", "PASS", expected="PASS")
+        self.assert_log_equals(
+            {"action": "test_end", "status": "PASS", "test": "test2"}
+        )
+        self.logger.test_end("test2", "PASS", expected="PASS")
+        last_item = self.pop_last_item()
+        self.assertEqual(last_item["action"], "log")
+        self.assertEqual(last_item["level"], "ERROR")
+        self.assertTrue(
+            last_item["message"].startswith(
+                "test_end for test2 logged while not in progress. Logged with data: {"
+            )
+        )
+        self.logger.suite_end()
+
+    def test_suite_start_twice(self):
+        self.logger.suite_start([])
+        self.assert_log_equals({"action": "suite_start", "tests": {"default": []}})
+        self.logger.suite_start([])
+        last_item = self.pop_last_item()
+        self.assertEqual(last_item["action"], "log")
+        self.assertEqual(last_item["level"], "ERROR")
+        self.logger.suite_end()
+
+    def test_suite_end_no_start(self):
+        self.logger.suite_start([])
+        self.assert_log_equals({"action": "suite_start", "tests": {"default": []}})
+        self.logger.suite_end()
+        self.assert_log_equals({"action": "suite_end"})
+        self.logger.suite_end()
+        last_item = self.pop_last_item()
+        self.assertEqual(last_item["action"], "log")
+        self.assertEqual(last_item["level"], "ERROR")
+
+    def test_multiple_loggers_suite_start(self):
+        logger1 = structuredlog.StructuredLogger("test")
+        self.logger.suite_start([])
+        logger1.suite_start([])
+        last_item = self.pop_last_item()
+        self.assertEqual(last_item["action"], "log")
+        self.assertEqual(last_item["level"], "ERROR")
+
+    def test_multiple_loggers_test_start(self):
+        logger1 = structuredlog.StructuredLogger("test")
+        self.logger.suite_start([])
+        self.logger.test_start("test")
+        logger1.test_start("test")
+        last_item = self.pop_last_item()
+        self.assertEqual(last_item["action"], "log")
+        self.assertEqual(last_item["level"], "ERROR")
+
+    def test_process(self):
+        self.logger.process_output(1234, "test output")
+        self.assert_log_equals(
+            {"action": "process_output", "process": "1234", "data": "test output"}
+        )
+
+    def test_process_start(self):
+        self.logger.process_start(1234)
+        self.assert_log_equals({"action": "process_start", "process": "1234"})
+
+    def test_process_exit(self):
+        self.logger.process_exit(1234, 0)
+        self.assert_log_equals(
+            {"action": "process_exit", "process": "1234", "exitcode": 0}
+        )
+
+    def test_log(self):
+        for level in ["critical", "error", "warning", "info", "debug"]:
+            getattr(self.logger, level)("message")
+            self.assert_log_equals(
+                {"action": "log", "level": level.upper(), "message": "message"}
+            )
+
+    def test_logging_adapter(self):
+        import logging
+
+        logging.basicConfig(level="DEBUG")
+        old_level = logging.root.getEffectiveLevel()
+        logging.root.setLevel("DEBUG")
+
+        std_logger = logging.getLogger("test")
+        std_logger.setLevel("DEBUG")
+
+        logger = stdadapter.std_logging_adapter(std_logger)
+
+        try:
+            for level in ["critical", "error", "warning", "info", "debug"]:
+                getattr(logger, level)("message")
+                self.assert_log_equals(
+                    {"action": "log", "level": level.upper(), "message": "message"}
+                )
+        finally:
+            logging.root.setLevel(old_level)
+
+    def test_add_remove_handlers(self):
+        handler = TestHandler()
+        self.logger.add_handler(handler)
+        self.logger.info("test1")
+
+        self.assert_log_equals({"action": "log", "level": "INFO", "message": "test1"})
+
+        self.assert_log_equals(
+            {"action": "log", "level": "INFO", "message": "test1"},
+            actual=handler.last_item,
+        )
+
+        self.logger.remove_handler(handler)
+        self.logger.info("test2")
+
+        self.assert_log_equals({"action": "log", "level": "INFO", "message": "test2"})
+
+        self.assert_log_equals(
+            {"action": "log", "level": "INFO", "message": "test1"},
+            actual=handler.last_item,
+        )
+
+    def test_wrapper(self):
+        file_like = structuredlog.StructuredLogFileLike(self.logger)
+
+        file_like.write("line 1")
+
+        self.assert_log_equals({"action": "log", "level": "INFO", "message": "line 1"})
+
+        file_like.write("line 2\n")
+
+        self.assert_log_equals({"action": "log", "level": "INFO", "message": "line 2"})
+
+        file_like.write("line 3\r")
+
+        self.assert_log_equals({"action": "log", "level": "INFO", "message": "line 3"})
+
+        file_like.write("line 4\r\n")
+
+        self.assert_log_equals({"action": "log", "level": "INFO", "message": "line 4"})
+
+    def test_shutdown(self):
+        # explicit shutdown
+        log = structuredlog.StructuredLogger("test 1")
+        log.add_handler(self.handler)
+        log.info("line 1")
+        self.assert_log_equals(
+            {"action": "log", "level": "INFO", "message": "line 1", "source": "test 1"}
+        )
+        log.shutdown()
+        self.assert_log_equals({"action": "shutdown", "source": "test 1"})
+        with self.assertRaises(structuredlog.LoggerShutdownError):
+            log.info("bad log")
+        with self.assertRaises(structuredlog.LoggerShutdownError):
+            log.log_raw({"action": "log", "level": "info", "message": "bad log"})
+
+        # shutdown still applies to new instances
+        del log
+        log = structuredlog.StructuredLogger("test 1")
+        with self.assertRaises(structuredlog.LoggerShutdownError):
+            log.info("bad log")
+
+        # context manager shutdown
+        with structuredlog.StructuredLogger("test 2") as log:
+            log.add_handler(self.handler)
+            log.info("line 2")
+            self.assert_log_equals(
+                {
+                    "action": "log",
+                    "level": "INFO",
+                    "message": "line 2",
+                    "source": "test 2",
+                }
+            )
+        self.assert_log_equals({"action": "shutdown", "source": "test 2"})
+
+        # shutdown prevents logging across instances
+        log1 = structuredlog.StructuredLogger("test 3")
+        log2 = structuredlog.StructuredLogger("test 3", component="bar")
+        log1.shutdown()
+        with self.assertRaises(structuredlog.LoggerShutdownError):
+            log2.info("line 3")
+
+
+class TestTypeConversions(BaseStructuredTest):
+    def test_raw(self):
+        self.logger.log_raw({"action": "suite_start", "tests": [1], "time": "1234"})
+        self.assert_log_equals(
+            {"action": "suite_start", "tests": {"default": ["1"]}, "time": 1234}
+        )
+        self.logger.suite_end()
+
+    def test_tuple(self):
+        self.logger.suite_start([])
+        if six.PY3:
+            self.logger.test_start(
+                (
+                    b"\xf0\x90\x8d\x84\xf0\x90\x8c\xb4\xf0\x90"
+                    b"\x8d\x83\xf0\x90\x8d\x84".decode(),
+                    42,
+                    u"\u16a4",
+                )
+            )
+        else:
+            self.logger.test_start(
+                (
+                    "\xf0\x90\x8d\x84\xf0\x90\x8c\xb4\xf0\x90"
+                    "\x8d\x83\xf0\x90\x8d\x84",
+                    42,
+                    u"\u16a4",
+                )
+            )
+        self.assert_log_equals(
+            {
+                "action": "test_start",
+                "test": (u"\U00010344\U00010334\U00010343\U00010344", u"42", u"\u16a4"),
+            }
+        )
+        self.logger.suite_end()
+
+    def test_non_string_messages(self):
+        self.logger.suite_start([])
+        self.logger.info(1)
+        self.assert_log_equals({"action": "log", "message": "1", "level": "INFO"})
+        self.logger.info([1, (2, "3"), "s", "s" + chr(255)])
+        if six.PY3:
+            self.assert_log_equals(
+                {
+                    "action": "log",
+                    "message": "[1, (2, '3'), 's', 's\xff']",
+                    "level": "INFO",
+                }
+            )
+        else:
+            self.assert_log_equals(
+                {
+                    "action": "log",
+                    "message": "[1, (2, '3'), 's', 's\\xff']",
+                    "level": "INFO",
+                }
+            )
+
+        self.logger.suite_end()
+
+    def test_utf8str_write(self):
+        with mozfile.NamedTemporaryFile() as logfile:
+            _fmt = formatters.TbplFormatter()
+            _handler = handlers.StreamHandler(logfile, _fmt)
+            self.logger.add_handler(_handler)
+            self.logger.suite_start([])
+            self.logger.info("☺")
+            logfile.seek(0)
+            data = logfile.readlines()[-1].strip()
+            if six.PY3:
+                self.assertEqual(data.decode(), "☺")
+            else:
+                self.assertEqual(data, "☺")
+            self.logger.suite_end()
+            self.logger.remove_handler(_handler)
+
+    def test_arguments(self):
+        self.logger.info(message="test")
+        self.assert_log_equals({"action": "log", "message": "test", "level": "INFO"})
+
+        self.logger.suite_start([], run_info={})
+        self.assert_log_equals(
+            {"action": "suite_start", "tests": {"default": []}, "run_info": {}}
+        )
+        self.logger.test_start(test="test1")
+        self.logger.test_status("subtest1", "FAIL", test="test1", status="PASS")
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "test": "test1",
+                "subtest": "subtest1",
+                "status": "PASS",
+                "expected": "FAIL",
+            }
+        )
+        self.logger.process_output(123, "data", "test")
+        self.assert_log_equals(
+            {
+                "action": "process_output",
+                "process": "123",
+                "command": "test",
+                "data": "data",
+            }
+        )
+        self.assertRaises(
+            TypeError,
+            self.logger.test_status,
+            subtest="subtest2",
+            status="FAIL",
+            expected="PASS",
+        )
+        self.assertRaises(
+            TypeError,
+            self.logger.test_status,
+            "test1",
+            "subtest1",
+            "PASS",
+            "FAIL",
+            "message",
+            "stack",
+            {},
+            [],
+            "unexpected",
+        )
+        self.assertRaises(TypeError, self.logger.test_status, "test1", test="test2")
+        self.logger.suite_end()
+
+
+class TestComponentFilter(BaseStructuredTest):
+    def test_filter_component(self):
+        component_logger = structuredlog.StructuredLogger(
+            self.logger.name, "test_component"
+        )
+        component_logger.component_filter = handlers.LogLevelFilter(lambda x: x, "info")
+
+        self.logger.debug("Test")
+        self.assertFalse(self.handler.empty)
+        self.assert_log_equals({"action": "log", "level": "DEBUG", "message": "Test"})
+        self.assertTrue(self.handler.empty)
+
+        component_logger.info("Test 1")
+        self.assertFalse(self.handler.empty)
+        self.assert_log_equals(
+            {
+                "action": "log",
+                "level": "INFO",
+                "message": "Test 1",
+                "component": "test_component",
+            }
+        )
+
+        component_logger.debug("Test 2")
+        self.assertTrue(self.handler.empty)
+
+        component_logger.component_filter = None
+
+        component_logger.debug("Test 3")
+        self.assertFalse(self.handler.empty)
+        self.assert_log_equals(
+            {
+                "action": "log",
+                "level": "DEBUG",
+                "message": "Test 3",
+                "component": "test_component",
+            }
+        )
+
+    def test_filter_default_component(self):
+        component_logger = structuredlog.StructuredLogger(
+            self.logger.name, "test_component"
+        )
+
+        self.logger.debug("Test")
+        self.assertFalse(self.handler.empty)
+        self.assert_log_equals({"action": "log", "level": "DEBUG", "message": "Test"})
+
+        self.logger.component_filter = handlers.LogLevelFilter(lambda x: x, "info")
+
+        self.logger.debug("Test 1")
+        self.assertTrue(self.handler.empty)
+
+        component_logger.debug("Test 2")
+        self.assertFalse(self.handler.empty)
+        self.assert_log_equals(
+            {
+                "action": "log",
+                "level": "DEBUG",
+                "message": "Test 2",
+                "component": "test_component",
+            }
+        )
+
+        self.logger.component_filter = None
+
+        self.logger.debug("Test 3")
+        self.assertFalse(self.handler.empty)
+        self.assert_log_equals({"action": "log", "level": "DEBUG", "message": "Test 3"})
+
+    def test_filter_message_mutuate(self):
+        def filter_mutate(msg):
+            if msg["action"] == "log":
+                msg["message"] = "FILTERED! %s" % msg["message"]
+            return msg
+
+        self.logger.component_filter = filter_mutate
+        self.logger.debug("Test")
+        self.assert_log_equals(
+            {"action": "log", "level": "DEBUG", "message": "FILTERED! Test"}
+        )
+        self.logger.component_filter = None
+
+
+class TestCommandline(unittest.TestCase):
+    def setUp(self):
+        self.logfile = mozfile.NamedTemporaryFile()
+
+    @property
+    def loglines(self):
+        self.logfile.seek(0)
+        return [line.rstrip() for line in self.logfile.readlines()]
+
+    def test_setup_logging(self):
+        parser = argparse.ArgumentParser()
+        commandline.add_logging_group(parser)
+        args = parser.parse_args(["--log-raw=-"])
+        logger = commandline.setup_logging("test_setup_logging", args, {})
+        self.assertEqual(len(logger.handlers), 1)
+
+    def test_setup_logging_optparse(self):
+        parser = optparse.OptionParser()
+        commandline.add_logging_group(parser)
+        args, _ = parser.parse_args(["--log-raw=-"])
+        logger = commandline.setup_logging("test_optparse", args, {})
+        self.assertEqual(len(logger.handlers), 1)
+        self.assertIsInstance(logger.handlers[0], handlers.StreamHandler)
+
+    def test_limit_formatters(self):
+        parser = argparse.ArgumentParser()
+        commandline.add_logging_group(parser, include_formatters=["raw"])
+        other_formatters = [fmt for fmt in commandline.log_formatters if fmt != "raw"]
+        # check that every formatter except raw is not present
+        for fmt in other_formatters:
+            with self.assertRaises(SystemExit):
+                parser.parse_args(["--log-%s=-" % fmt])
+            with self.assertRaises(SystemExit):
+                parser.parse_args(["--log-%s-level=error" % fmt])
+        # raw is still ok
+        args = parser.parse_args(["--log-raw=-"])
+        logger = commandline.setup_logging("test_setup_logging2", args, {})
+        self.assertEqual(len(logger.handlers), 1)
+
+    def test_setup_logging_optparse_unicode(self):
+        parser = optparse.OptionParser()
+        commandline.add_logging_group(parser)
+        args, _ = parser.parse_args([u"--log-raw=-"])
+        logger = commandline.setup_logging("test_optparse_unicode", args, {})
+        self.assertEqual(len(logger.handlers), 1)
+        self.assertEqual(logger.handlers[0].stream, sys.stdout)
+        self.assertIsInstance(logger.handlers[0], handlers.StreamHandler)
+
+    def test_logging_defaultlevel(self):
+        parser = argparse.ArgumentParser()
+        commandline.add_logging_group(parser)
+
+        args = parser.parse_args(["--log-tbpl=%s" % self.logfile.name])
+        logger = commandline.setup_logging("test_fmtopts", args, {})
+        logger.info("INFO message")
+        logger.debug("DEBUG message")
+        logger.error("ERROR message")
+        # The debug level is not logged by default.
+        self.assertEqual([b"INFO message", b"ERROR message"], self.loglines)
+
+    def test_logging_errorlevel(self):
+        parser = argparse.ArgumentParser()
+        commandline.add_logging_group(parser)
+        args = parser.parse_args(
+            ["--log-tbpl=%s" % self.logfile.name, "--log-tbpl-level=error"]
+        )
+        logger = commandline.setup_logging("test_fmtopts", args, {})
+        logger.info("INFO message")
+        logger.debug("DEBUG message")
+        logger.error("ERROR message")
+
+        # Only the error level and above were requested.
+        self.assertEqual([b"ERROR message"], self.loglines)
+
+    def test_logging_debuglevel(self):
+        parser = argparse.ArgumentParser()
+        commandline.add_logging_group(parser)
+        args = parser.parse_args(
+            ["--log-tbpl=%s" % self.logfile.name, "--log-tbpl-level=debug"]
+        )
+        logger = commandline.setup_logging("test_fmtopts", args, {})
+        logger.info("INFO message")
+        logger.debug("DEBUG message")
+        logger.error("ERROR message")
+        # Requesting a lower log level than default works as expected.
+        self.assertEqual(
+            [b"INFO message", b"DEBUG message", b"ERROR message"], self.loglines
+        )
+
+    def test_unused_options(self):
+        parser = argparse.ArgumentParser()
+        commandline.add_logging_group(parser)
+        args = parser.parse_args(["--log-tbpl-level=error"])
+        self.assertRaises(
+            ValueError, commandline.setup_logging, "test_fmtopts", args, {}
+        )
+
+
+class TestBuffer(BaseStructuredTest):
+    def assert_log_equals(self, expected, actual=None):
+        if actual is None:
+            actual = self.pop_last_item()
+
+        all_expected = {
+            "pid": os.getpid(),
+            "thread": "MainThread",
+            "source": "testBuffer",
+        }
+        specials = set(["time"])
+
+        all_expected.update(expected)
+        for key, value in six.iteritems(all_expected):
+            self.assertEqual(actual[key], value)
+
+        self.assertEqual(set(all_expected.keys()) | specials, set(actual.keys()))
+
+    def setUp(self):
+        self.logger = structuredlog.StructuredLogger("testBuffer")
+        self.handler = handlers.BufferHandler(TestHandler(), message_limit=4)
+        self.logger.add_handler(self.handler)
+
+    def tearDown(self):
+        self.logger.remove_handler(self.handler)
+
+    def pop_last_item(self):
+        return self.handler.inner.items.pop()
+
+    def test_buffer_messages(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.send_message("buffer", "off")
+        self.logger.test_status("test1", "sub1", status="PASS")
+        # Even for buffered actions, the buffer does not interfere if
+        # buffering is turned off.
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "test": "test1",
+                "status": "PASS",
+                "subtest": "sub1",
+            }
+        )
+        self.logger.send_message("buffer", "on")
+        self.logger.test_status("test1", "sub2", status="PASS")
+        self.logger.test_status("test1", "sub3", status="PASS")
+        self.logger.test_status("test1", "sub4", status="PASS")
+        self.logger.test_status("test1", "sub5", status="PASS")
+        self.logger.test_status("test1", "sub6", status="PASS")
+        self.logger.test_status("test1", "sub7", status="PASS")
+        self.logger.test_end("test1", status="OK")
+        self.logger.send_message("buffer", "clear")
+        self.assert_log_equals({"action": "test_end", "test": "test1", "status": "OK"})
+        self.logger.suite_end()
+
+    def test_buffer_size(self):
+        self.logger.suite_start([])
+        self.logger.test_start("test1")
+        self.logger.test_status("test1", "sub1", status="PASS")
+        self.logger.test_status("test1", "sub2", status="PASS")
+        self.logger.test_status("test1", "sub3", status="PASS")
+        self.logger.test_status("test1", "sub4", status="PASS")
+        self.logger.test_status("test1", "sub5", status="PASS")
+        self.logger.test_status("test1", "sub6", status="PASS")
+        self.logger.test_status("test1", "sub7", status="PASS")
+
+        # No test status messages made it to the underlying handler.
+        self.assert_log_equals({"action": "test_start", "test": "test1"})
+
+        # The buffer's actual size never grows beyond the specified limit.
+        self.assertEqual(len(self.handler._buffer), 4)
+
+        self.logger.test_status("test1", "sub8", status="FAIL")
+        # The number of messages deleted comes back in a list.
+        self.assertEqual([4], self.logger.send_message("buffer", "flush"))
+
+        # When the buffer is dumped, the failure is the last thing logged
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "test": "test1",
+                "subtest": "sub8",
+                "status": "FAIL",
+                "expected": "PASS",
+            }
+        )
+        # Three additional messages should have been retained for context
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "test": "test1",
+                "status": "PASS",
+                "subtest": "sub7",
+            }
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "test": "test1",
+                "status": "PASS",
+                "subtest": "sub6",
+            }
+        )
+        self.assert_log_equals(
+            {
+                "action": "test_status",
+                "test": "test1",
+                "status": "PASS",
+                "subtest": "sub5",
+            }
+        )
+        self.assert_log_equals({"action": "suite_start", "tests": {"default": []}})
+
+
+class TestReader(unittest.TestCase):
+    def to_file_like(self, obj):
+        data_str = "\n".join(json.dumps(item) for item in obj)
+        return StringIO(data_str)
+
+    def test_read(self):
+        data = [
+            {"action": "action_0", "data": "data_0"},
+            {"action": "action_1", "data": "data_1"},
+        ]
+
+        f = self.to_file_like(data)
+        self.assertEqual(data, list(reader.read(f)))
+
+    def test_imap_log(self):
+        data = [
+            {"action": "action_0", "data": "data_0"},
+            {"action": "action_1", "data": "data_1"},
+        ]
+
+        f = self.to_file_like(data)
+
+        def f_action_0(item):
+            return ("action_0", item["data"])
+
+        def f_action_1(item):
+            return ("action_1", item["data"])
+
+        res_iter = reader.imap_log(
+            reader.read(f), {"action_0": f_action_0, "action_1": f_action_1}
+        )
+        self.assertEqual(
+            [("action_0", "data_0"), ("action_1", "data_1")], list(res_iter)
+        )
+
+    def test_each_log(self):
+        data = [
+            {"action": "action_0", "data": "data_0"},
+            {"action": "action_1", "data": "data_1"},
+        ]
+
+        f = self.to_file_like(data)
+
+        count = {"action_0": 0, "action_1": 0}
+
+        def f_action_0(item):
+            count[item["action"]] += 1
+
+        def f_action_1(item):
+            count[item["action"]] += 2
+
+        reader.each_log(
+            reader.read(f), {"action_0": f_action_0, "action_1": f_action_1}
+        )
+
+        self.assertEqual({"action_0": 1, "action_1": 2}, count)
+
+    def test_handler(self):
+        data = [
+            {"action": "action_0", "data": "data_0"},
+            {"action": "action_1", "data": "data_1"},
+        ]
+
+        f = self.to_file_like(data)
+
+        test = self
+
+        class ReaderTestHandler(reader.LogHandler):
+            def __init__(self):
+                self.action_0_count = 0
+                self.action_1_count = 0
+
+            def action_0(self, item):
+                test.assertEqual(item["action"], "action_0")
+                self.action_0_count += 1
+
+            def action_1(self, item):
+                test.assertEqual(item["action"], "action_1")
+                self.action_1_count += 1
+
+        handler = ReaderTestHandler()
+        reader.handle_log(reader.read(f), handler)
+
+        self.assertEqual(handler.action_0_count, 1)
+        self.assertEqual(handler.action_1_count, 1)
+
+
+if __name__ == "__main__":
+    mozunit.main()