1 files changed, 103 insertions, 0 deletions
diff --git a/testing/mochitest/tests/SimpleTest/MozillaLogger.js b/testing/mochitest/tests/SimpleTest/MozillaLogger.js
new file mode 100644
index 0000000000..07d50572b0
--- /dev/null
+++ b/testing/mochitest/tests/SimpleTest/MozillaLogger.js
@@ -0,0 +1,103 @@
+/**
+ * MozillaLogger, a base class logger that just logs to stdout.
+ */
+
+"use strict";
+
+function formatLogMessage(msg) {
+  return msg.info.join(" ") + "\n";
+}
+
+function importMJS(mjs) {
+  if (typeof ChromeUtils === "object") {
+    return ChromeUtils.importESModule(mjs);
+  }
+  /* globals SpecialPowers */
+  return SpecialPowers.ChromeUtils.importESModule(mjs);
+}
+
+// When running in release builds, we get a fake Components object in
+// web contexts, so we need to check that the Components object is sane,
+// too, not just that it exists.
+let haveComponents =
+  typeof Components === "object" &&
+  typeof Components.Constructor === "function";
+
+let CC = (haveComponents
+  ? Components
+  : SpecialPowers.wrap(SpecialPowers.Components)
+).Constructor;
+
+let ConverterOutputStream = CC(
+  "@mozilla.org/intl/converter-output-stream;1",
+  "nsIConverterOutputStream",
+  "init"
+);
+
+class MozillaLogger {
+  get logCallback() {
+    return msg => {
+      this.log(formatLogMessage(msg));
+    };
+  }
+
+  log(msg) {
+    dump(msg);
+  }
+
+  close() {}
+}
+
+/**
+ * MozillaFileLogger, a log listener that can write to a local file.
+ * intended to be run from chrome space
+ */
+
+/** Init the file logger with the absolute path to the file.
+    It will create and append if the file already exists **/
+class MozillaFileLogger extends MozillaLogger {
+  constructor(aPath) {
+    super();
+
+    const { FileUtils } = importMJS("resource://gre/modules/FileUtils.sys.mjs");
+
+    this._file = FileUtils.File(aPath);
+    this._foStream = FileUtils.openFileOutputStream(
+      this._file,
+      FileUtils.MODE_WRONLY | FileUtils.MODE_CREATE | FileUtils.MODE_APPEND
+    );
+
+    this._converter = ConverterOutputStream(this._foStream, "UTF-8");
+  }
+
+  get logCallback() {
+    return msg => {
+      if (this._converter) {
+        var data = formatLogMessage(msg);
+        this.log(data);
+
+        if (data.includes("SimpleTest FINISH")) {
+          this.close();
+        }
+      }
+    };
+  }
+
+  log(msg) {
+    if (this._converter) {
+      this._converter.writeString(msg);
+    }
+  }
+
+  close() {
+    this._converter.flush();
+    this._converter.close();
+
+    this._foStream = null;
+    this._converter = null;
+    this._file = null;
+  }
+}
+
+this.MozillaLogger = MozillaLogger;
+this.MozillaFileLogger = MozillaFileLogger;