Bug 1626293 [wpt PR 22568] - Unit test for LogHandler, a=testonly

Automatic update from web-platform-tests
Unit test for LogHandler (#22568)

The LogHandler is the class that handles updating test and subtest status in log. This test
increases the overall code coverage of stability.py a 12%.
--

wpt-commits: b93f582ae4903d7af5e002d390596ae369b81ea8
wpt-pr: 22568

Author: svillar

testing/web-platform/tests/tools/wptrunner/wptrunner/tests/test_stability.py

@@ -1,4 +1,5 @@
 from .. import stability
+from collections import OrderedDict, defaultdict
 
 def test_is_inconsistent():
     assert stability.is_inconsistent({"PASS": 10}, 10) is False
@@ -65,3 +66,54 @@ def test_get_steps():
     assert steps[0][0] == "Running tests in a loop %d times" % repeat_loop
     assert steps[1][0] == (
         "Running tests in a loop with restarts %d times" % repeat_restart)
+
+
+def test_log_handler():
+    handler = stability.LogHandler()
+    data = OrderedDict()
+    data["test"] = "test_name"
+    test = handler.find_or_create_test(data)
+    assert test["subtests"] == OrderedDict()
+    assert test["status"] == defaultdict(int)
+    assert test["longest_duration"] == defaultdict(float)
+    assert test == handler.find_or_create_test(data)
+
+    start_time = 100
+    data["time"] = start_time
+    handler.test_start(data)
+    assert test["start_time"] == start_time
+
+    data["subtest"] = "subtest_name"
+    subtest = handler.find_or_create_subtest(data)
+    assert subtest["status"] == defaultdict(int)
+    assert subtest["messages"] == set()
+    assert subtest == handler.find_or_create_subtest(data)
+
+    data["status"] = 0
+    assert subtest["status"][data["status"]] == 0
+    handler.test_status(data)
+    assert subtest["status"][data["status"]] == 1
+    handler.test_status(data)
+    assert subtest["status"][data["status"]] == 2
+    data["status"] = 1
+    assert subtest["status"][data["status"]] == 0
+    message = "test message"
+    data["message"] = message
+    handler.test_status(data)
+    assert subtest["status"][data["status"]] == 1
+    assert len(subtest["messages"]) == 1
+    assert message in subtest["messages"]
+
+    test_duration = 10
+    data["time"] = data["time"] + test_duration
+    handler.test_end(data)
+    assert test["longest_duration"][data["status"]] == test_duration
+    assert "timeout" not in test
+
+    data["test2"] = "test_name_2"
+    timeout = 5
+    data["extra"] = {}
+    data["extra"]["test_timeout"] = timeout
+    handler.test_start(data)
+    handler.test_end(data)
+    assert test["timeout"] == timeout * 1000