add more debugging

localnerve · Jan 25, 2017 · bc864f4 · bc864f4
1 parent e409b9e
commit bc864f4
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/lib/phantom/modules/selectorDetect.js b/lib/phantom/modules/selectorDetect.js
@@ -19,6 +19,9 @@ var start = new Date().getTime();
 var page = require("webpage").create();
 var fs = require("fs");
 var globals = require("./globals");
+// @@@
+var system = require("system");
+// @@@
 
 /**
  * waitFor
@@ -61,6 +64,25 @@ function snapshot(options, detector, filter) {
     "Accept-Encoding": "identity"
   };
 
+  // @@@
+  page.onError = function (msg, trace) {
+    system.stderr.writeLine('onError');
+    var msgStack = ['  Error: ' + msg];
+    if (trace) {
+      msgStack.push('  Trace:');
+      trace.forEach(function (t) {
+        msgStack.push('    -> '+ t.file + ': ' + t.line);
+      });
+    }
+    system.stderr.writeLine(msgStack.join('\n'));
+  }
+  page.onResourceError = function (resourceError) {
+    system.stderr.writeLine("= onResourceError()");
+    system.stderr.writeLine("  - unable to load url: '" +resourceError.url+"'");
+    system.stderr.writeLine("  - error (" + resourceError.errorCode + "): " + resourceError.errorString);
+  }
+  // @@@
+
   // create the snapshot
   page.open(options.url, function (status) {
     if (status !== "success") {