Convert test of saving with complex name to Selenium

notebook/static/notebook/js/notebook.js

@@ -2742,6 +2742,8 @@ define([
                 $.proxy(that.save_notebook_success, that, start),
                 function (error) {
                     that.events.trigger('notebook_save_failed.Notebook', error);
+                    // This hasn't handled the error, so propagate it up
+                    return Promise.reject(error);
                 }
             );
         };
@@ -2845,6 +2847,7 @@ define([
             this.create_checkpoint();
             this._checkpoint_after_save = false;
         }
+        return data;
     };
 
     Notebook.prototype.save_notebook_as = function() {
@@ -3309,7 +3312,7 @@ define([
      */
     Notebook.prototype.save_checkpoint = function () {
         this._checkpoint_after_save = true;
-        this.save_notebook(true);
+        return this.save_notebook(true);
     };
 
     /**

notebook/tests/selenium/test_save.py

@@ -0,0 +1,65 @@
+"""Test saving a notebook with escaped characters
+"""
+
+from urllib.parse import quote
+from .utils import wait_for_selector, new_window
+
+promise_js = """
+var done = arguments[arguments.length - 1];
+%s.then(
+    data => { done(["success", data]); },
+    error => { done(["error", error]); }
+);
+"""
+
+def execute_promise(js, browser):
+    state, data = browser.execute_async_script(promise_js % js)
+    if state == 'success':
+        return data
+    raise Exception(data)
+
+
+def test_save(notebook):
+    # don't use unicode with ambiguous composed/decomposed normalization
+    # because the filesystem may use a different normalization than literals.
+    # This causes no actual problems, but will break string comparison.
+    nbname = "has#hash and space and unicø∂e.ipynb"
+    escaped_name = quote(nbname)
+
+    notebook.edit_cell(index=0, content="s = '??'")
+
+    notebook.browser.execute_script("Jupyter.notebook.set_notebook_name(arguments[0])", nbname)
+
+    model = execute_promise("Jupyter.notebook.save_notebook()", notebook.browser)
+    assert model['name'] == nbname
+
+    current_name = notebook.browser.execute_script("return Jupyter.notebook.notebook_name")
+    assert current_name == nbname
+
+    current_path = notebook.browser.execute_script("return Jupyter.notebook.notebook_path")
+    assert current_path == nbname
+
+    displayed_name = notebook.browser.find_element_by_id('notebook_name').text
+    assert displayed_name + '.ipynb' == nbname
+
+    execute_promise("Jupyter.notebook.save_checkpoint()", notebook.browser)
+
+    checkpoints = notebook.browser.execute_script("return Jupyter.notebook.checkpoints")
+    assert len(checkpoints) == 1
+
+    notebook.browser.find_element_by_css_selector('#ipython_notebook a').click()
+    hrefs_nonmatch = []
+    for link in wait_for_selector(notebook.browser, 'a.item_link'):
+        href = link.get_attribute('href')
+        if escaped_name in href:
+            print("Opening", href)
+            notebook.browser.get(href)
+            wait_for_selector(notebook.browser, '.cell')
+            break
+        hrefs_nonmatch.append(href)
+    else:
+        raise AssertionError("{!r} not found in {!r}"
+                             .format(escaped_name, hrefs_nonmatch))
+
+    current_name = notebook.browser.execute_script("return Jupyter.notebook.notebook_name")
+    assert current_name == nbname

notebook/tests/selenium/utils.py

@@ -324,9 +324,11 @@ def new_window(browser, selector=None):
     """
     initial_window_handles = browser.window_handles
     yield
-    new_window_handle = next(window for window in browser.window_handles 
-                             if window not in initial_window_handles)
-    browser.switch_to.window(new_window_handle)
+    new_window_handles = [window for window in browser.window_handles
+                          if window not in initial_window_handles]
+    if not new_window_handles:
+        raise Exception("No new windows opened during context")
+    browser.switch_to.window(new_window_handles[0])
     if selector is not None:
         wait_for_selector(browser, selector)