test append_output with invalid data

IPython/html/tests/casperjs/test_cases/safe_append_output.js

@@ -0,0 +1,32 b''
+//
+// Test validation in append_output
+//
+// Invalid output data is stripped and logged.
+//
+
+casper.notebook_test(function () {
+    // this.printLog();
+    var messages = [];
+    this.on('remote.message', function (msg) {
+        messages.push(msg);
+    });
+    
+    this.evaluate(function () {
+        var cell = IPython.notebook.get_cell(0);
+        cell.set_text( "dp = get_ipython().display_pub\n" +
+                       "dp.publish('test', {'text/plain' : '5', 'image/png' : 5})"
+        );
+        cell.execute();
+    });
+
+    this.wait_for_output(0);
+    this.on('remote.message', function () {});
+
+    this.then(function () {
+        var output = this.get_output_cell(0);
+        this.test.assert(messages.length > 0, "Captured log message");
+        this.test.assertEquals(messages[messages.length-1], "Invalid type for image/png 5", "Logged Invalid type message");
+        this.test.assertEquals(output['image/png'], undefined, "Non-string png data was stripped");
+        this.test.assertEquals(output['text/plain'], '5', "text data is fine");
+    });
+});