import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/test/external/external_media_tests/utils.py

@@ -0,0 +1,68 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import datetime
+import time
+import types
+
+from marionette_driver.errors import TimeoutException
+
+
+def timestamp_now():
+    return int(time.mktime(datetime.datetime.now().timetuple()))
+
+
+def verbose_until(wait, target, condition, message=""):
+    """
+    Performs a `wait`.until(condition)` and adds information about the state of
+    `target` to any resulting `TimeoutException`.
+
+    :param wait: a `marionette.Wait` instance
+    :param target: the object you want verbose output about if a
+        `TimeoutException` is raised
+        This is usually the input value provided to the `condition` used by
+        `wait`. Ideally, `target` should implement `__str__`
+    :param condition: callable function used by `wait.until()`
+    :param message: optional message to log when exception occurs
+
+    :return: the result of `wait.until(condition)`
+    """
+    if isinstance(condition, types.FunctionType):
+        name = condition.__name__
+    else:
+        name = str(condition)
+    err_message = '\n'.join([message,
+                             'condition: ' + name,
+                             str(target)])
+
+    return wait.until(condition, message=err_message)
+
+
+
+def save_memory_report(marionette):
+    """
+    Saves memory report (like about:memory) to current working directory.
+
+    :param marionette: Marionette instance to use for executing.
+    """
+    with marionette.using_context('chrome'):
+        marionette.execute_async_script("""
+            Components.utils.import("resource://gre/modules/Services.jsm");
+            let Cc = Components.classes;
+            let Ci = Components.interfaces;
+            let dumper = Cc["@mozilla.org/memory-info-dumper;1"].
+                        getService(Ci.nsIMemoryInfoDumper);
+            // Examples of dirs: "CurProcD" usually 'browser' dir in
+            // current FF dir; "DfltDwnld" default download dir
+            let file = Services.dirsvc.get("CurProcD", Ci.nsIFile);
+            file.append("media-memory-report");
+            file.createUnique(Ci.nsIFile.DIRECTORY_TYPE, 0777);
+            file.append("media-memory-report.json.gz");
+            dumper.dumpMemoryReportsToNamedFile(file.path, null, null, false);
+            log('Saved memory report to ' + file.path);
+            // for dmd-enabled build
+            dumper.dumpMemoryInfoToTempDir("media", false, false);
+            marionetteScriptFinished(true);
+            return;
+        """, script_timeout=30000)