1 files changed, 75 insertions, 0 deletions
diff --git a/testing/marionette/logging.js b/testing/marionette/logging.js
new file mode 100644
index 0000000000..d77adfb0cb
--- /dev/null
+++ b/testing/marionette/logging.js
@@ -0,0 +1,75 @@
+/* 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/. */
+
+"use strict";
+
+this.EXPORTED_SYMBOLS = ["logging"];
+
+this.logging = {};
+
+/** Simple logger that is used in Simple Test harness tests. */
+logging.ContentLogger = class {
+  constructor() {
+    this.logs_ = [];
+  }
+
+  /**
+   * Append a log entry.
+   *
+   * @param {string} message
+   *     Log entry message.
+   * @param {string=} level
+   *     Severity of entry.  Defaults to "INFO".
+   */
+  log(message, level = "INFO") {
+    let now = (new Date()).toString();
+    this.logs_.push([level, message, now]);
+  }
+
+  /**
+   * Append array of log entries.
+   *
+   * @param {Array.<Array<string, string, string>>} messages
+   *     List of log entries, that are of the form severity, message,
+   *     and date.
+   */
+  addAll(messages) {
+    for (let message of messages) {
+      this.logs_.push(message);
+    }
+  }
+
+  /**
+   * Gets current log entries and clears the cache.
+   *
+   * @return {Array.<Array<string, string, string>>}
+   *     Log entries of the form severity, message, and date.
+   */
+  get() {
+    let logs = this.logs_;
+    this.logs_ = [];
+    return logs;
+  }
+};
+
+/**
+ * Adapts an instance of ContentLogger for use in a sandbox.  Is consumed
+ * by sandbox.augment.
+ */
+logging.Adapter = class {
+  constructor(logger = null) {
+    this.logger = logger;
+  }
+
+  get exports() {
+    return new Map([["log", this.log.bind(this)]]);
+  }
+
+  log(message, level = "INFO") {
+    dump(`MARIONETTE LOG: ${level}: ${message}\n`);
+    if (this.logger) {
+      this.logger.log(message, level);
+    }
+  }
+};