1 files changed, 49 insertions, 0 deletions
diff --git a/devtools/shared/pretty-fast/tests/unit/head_pretty-fast.js b/devtools/shared/pretty-fast/tests/unit/head_pretty-fast.js
new file mode 100644
index 000000000..abde4b197
--- /dev/null
+++ b/devtools/shared/pretty-fast/tests/unit/head_pretty-fast.js
@@ -0,0 +1,49 @@
+"use strict";
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+var Cr = Components.results;
+
+const { require } = Cu.import("resource://devtools/shared/Loader.jsm", {});
+
+this.sourceMap = require("source-map");
+this.acorn = require("acorn/acorn");
+this.prettyFast = require("devtools/shared/pretty-fast/pretty-fast");
+const { console } = Cu.import("resource://gre/modules/Console.jsm", {});
+
+// Register a console listener, so console messages don't just disappear
+// into the ether.
+var errorCount = 0;
+var listener = {
+  observe: function (aMessage) {
+    errorCount++;
+    try {
+      // If we've been given an nsIScriptError, then we can print out
+      // something nicely formatted, for tools like Emacs to pick up.
+      var scriptError = aMessage.QueryInterface(Ci.nsIScriptError);
+      dump(aMessage.sourceName + ":" + aMessage.lineNumber + ": " +
+           scriptErrorFlagsToKind(aMessage.flags) + ": " +
+           aMessage.errorMessage + "\n");
+      var string = aMessage.errorMessage;
+    } catch (x) {
+      // Be a little paranoid with message, as the whole goal here is to lose
+      // no information.
+      try {
+        var string = "" + aMessage.message;
+      } catch (x) {
+        var string = "<error converting error message to string>";
+      }
+    }
+
+    // Ignored until they are fixed in bug 1242968.
+    if (string.includes("JavaScript Warning")) {
+      return;
+    }
+
+    do_throw("head_pretty-fast.js got console message: " + string + "\n");
+  }
+};
+
+var consoleService = Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService);
+consoleService.registerListener(listener);
+