Bug fix for LaTeX source not saving

cms/djangoapps/contentstore/features/advanced-settings.py

@@ -3,11 +3,7 @@
 
 from lettuce import world, step
 from nose.tools import assert_false, assert_equal, assert_regexp_matches
-
-"""
-http://selenium.googlecode.com/svn/trunk/docs/api/py/webdriver/selenium.webdriver.common.keys.html
-"""
-from selenium.webdriver.common.keys import Keys
+from common import type_in_codemirror
 
 KEY_CSS = '.key input.policy-key'
 VALUE_CSS = 'textarea.json'
@@ -37,13 +33,7 @@ def press_the_notification_button(step, name):
 
 @step(u'I edit the value of a policy key$')
 def edit_the_value_of_a_policy_key(step):
-    """
-    It is hard to figure out how to get into the CodeMirror
-    area, so cheat and do it from the policy key field :)
-    """
-    world.css_find(".CodeMirror")[get_index_of(DISPLAY_NAME_KEY)].click()
-    g = world.css_find("div.CodeMirror.CodeMirror-focused > div > textarea")
-    g._element.send_keys(Keys.ARROW_LEFT, ' ', 'X')
+    type_in_codemirror(get_index_of(DISPLAY_NAME_KEY), 'X')
 
 
 @step(u'I edit the value of a policy key and save$')
@@ -132,13 +122,5 @@ def change_display_name_value(step, new_value):
 
 
 def change_value(step, key, new_value):
-    index = get_index_of(key)
-    world.css_find(".CodeMirror")[index].click()
-    g = world.css_find("div.CodeMirror.CodeMirror-focused > div > textarea")
-    current_value = world.css_find(VALUE_CSS)[index].value
-    g._element.send_keys(Keys.CONTROL + Keys.END)
-    for count in range(len(current_value)):
-        g._element.send_keys(Keys.END, Keys.BACK_SPACE)
-        # Must delete "" before typing the JSON value
-    g._element.send_keys(Keys.END, Keys.BACK_SPACE, Keys.BACK_SPACE, new_value)
+    type_in_codemirror(get_index_of(key), new_value)
     press_the_notification_button(step, "Save")

cms/djangoapps/contentstore/features/common.py

@@ -169,3 +169,14 @@ def open_new_unit(step):
     step.given('I have added a new subsection')
     step.given('I expand the first section')
     world.css_click('a.new-unit-item')
+
+
+def type_in_codemirror(index, text):
+    world.css_click(".CodeMirror", index=index)
+    g = world.css_find("div.CodeMirror.CodeMirror-focused > div > textarea")
+    if world.is_mac():
+        g._element.send_keys(Keys.COMMAND + 'a')
+    else:
+        g._element.send_keys(Keys.CONTROL + 'a')
+    g._element.send_keys(Keys.DELETE)
+    g._element.send_keys(text)

cms/djangoapps/contentstore/features/problem-editor.feature

@@ -3,65 +3,71 @@ Feature: Problem Editor
 
   Scenario: User can view metadata
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I see five alphabetized settings and their expected values
     And Edit High Level Source is not visible
 
   Scenario: User can modify String values
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I can modify the display name
     And my display name change is persisted on save
 
   Scenario: User can specify special characters in String values
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I can specify special characters in the display name
     And my special characters and persisted on save
 
   Scenario: User can revert display name to unset
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I can revert the display name to unset
     And my display name is unset on save
 
   Scenario: User can select values in a Select
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I can select Per Student for Randomization
     And my change to randomization is persisted
     And I can revert to the default value for randomization
 
   Scenario: User can modify float input values
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I can set the weight to "3.5"
     And my change to weight is persisted
     And I can revert to the default value of unset for weight
 
   Scenario: User cannot type letters in float number field
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then if I set the weight to "abc", it remains unset
 
   Scenario: User cannot type decimal values integer number field
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then if I set the max attempts to "2.34", it displays initially as "234", and is persisted as "234"
 
   Scenario: User cannot type out of range values in an integer number field
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then if I set the max attempts to "-3", it displays initially as "-3", and is persisted as "0"
 
   Scenario: Settings changes are not saved on Cancel
     Given I have created a Blank Common Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then I can set the weight to "3.5"
     And I can modify the display name
     Then If I press Cancel my changes are not persisted
 
   Scenario: Edit High Level source is available for LaTeX problem
     Given I have created a LaTeX Problem
-    And I edit and select Settings
+    When I edit and select Settings
     Then Edit High Level Source is visible
+
+  Scenario: High Level source is persisted for LaTeX problem (bug STUD-280)
+    Given I have created a LaTeX Problem
+    When I edit and compile the High Level Source
+    Then my change to the High Level Source is persisted
+    And when I view the High Level Source I see my changes

cms/djangoapps/contentstore/features/problem-editor.py

@@ -3,6 +3,7 @@
 
 from lettuce import world, step
 from nose.tools import assert_equal
+from common import type_in_codemirror
 
 DISPLAY_NAME = "Display Name"
 MAXIMUM_ATTEMPTS = "Maximum Attempts"
@@ -135,12 +136,12 @@ def set_the_max_attempts(step, max_attempts_set, max_attempts_displayed, max_att
 
 @step('Edit High Level Source is not visible')
 def edit_high_level_source_not_visible(step):
-    verify_high_level_source(step, False)
+    verify_high_level_source_links(step, False)
 
 
 @step('Edit High Level Source is visible')
-def edit_high_level_source_visible(step):
-    verify_high_level_source(step, True)
+def edit_high_level_source_links_visible(step):
+    verify_high_level_source_links(step, True)
 
 
 @step('If I press Cancel my changes are not persisted')
@@ -153,13 +154,33 @@ def cancel_does_not_save_changes(step):
 @step('I have created a LaTeX Problem')
 def create_latex_problem(step):
     world.click_new_component_button(step, '.large-problem-icon')
-    # Go to advanced tab (waiting for the tab to be visible)
-    world.css_find('#ui-id-2')
+    # Go to advanced tab.
     world.css_click('#ui-id-2')
     world.click_component_from_menu("i4x://edx/templates/problem/Problem_Written_in_LaTeX", '.xmodule_CapaModule')
 
 
-def verify_high_level_source(step, visible):
+@step('I edit and compile the High Level Source')
+def edit_latex_source(step):
+    open_high_level_source()
+    type_in_codemirror(1, "hi")
+    world.css_click('.hls-compile')
+
+
+@step('my change to the High Level Source is persisted')
+def high_level_source_persisted(step):
+    def verify_text(driver):
+        return world.css_find('.problem').text == 'hi'
+
+    world.wait_for(verify_text)
+
+
+@step('I view the High Level Source I see my changes')
+def high_level_source_in_editor(step):
+    open_high_level_source()
+    assert_equal('hi', world.css_find('.source-edit-box').value)
+
+
+def verify_high_level_source_links(step, visible):
     assert_equal(visible, world.is_css_present('.launch-latex-compiler'))
     world.cancel_component(step)
     assert_equal(visible, world.is_css_present('.upload-button'))
@@ -187,3 +208,8 @@ def verify_unset_display_name():
 
 def set_weight(weight):
     world.get_setting_entry(PROBLEM_WEIGHT).find_by_css('.setting-input')[0].fill(weight)
+
+
+def open_high_level_source():
+    world.css_click('a.edit-button')
+    world.css_click('.launch-latex-compiler > a')

cms/static/coffee/src/views/module_edit.coffee

@@ -44,8 +44,17 @@ class CMS.Views.ModuleEdit extends Backbone.View
         [@metadataEditor.getDisplayName()])
       @$el.find('.component-name').html(title)
 
+  customMetadata: ->
+      # Hack to support metadata fields that aren't part of the metadata editor (ie, LaTeX high level source).
+      # Walk through the set of elements which have the 'data-metadata_name' attribute and
+      # build up an object to pass back to the server on the subsequent POST.
+      # Note that these values will always be sent back on POST, even if they did not actually change.
+      _metadata = {}
+      _metadata[$(el).data("metadata-name")] = el.value for el in $('[data-metadata-name]',  @$component_editor())
+      return _metadata
+
   changedMetadata: ->
-    return @metadataEditor.getModifiedMetadataValues()
+    return _.extend(@metadataEditor.getModifiedMetadataValues(), @customMetadata())
 
   cloneTemplate: (parent, template) ->
     $.post("/clone_item", {

common/djangoapps/terrain/ui_helpers.py

@@ -3,6 +3,7 @@
 
 from lettuce import world
 import time
+import platform
 from urllib import quote_plus
 from selenium.common.exceptions import WebDriverException, StaleElementReferenceException
 from selenium.webdriver.support import expected_conditions as EC
@@ -57,20 +58,28 @@ def is_visible(driver):
 
 
 @world.absorb
-def css_click(css_selector):
+def css_click(css_selector, index=0, attempts=5):
     """
     Perform a click on a CSS selector, retrying if it initially fails
+    This function will return if the click worked (since it is try/excepting all errors)
     """
     assert is_css_present(css_selector)
-    try:
-        world.browser.find_by_css(css_selector).click()
-
-    except WebDriverException:
-        # Occassionally, MathJax or other JavaScript can cover up
-        # an element  temporarily.
-        # If this happens, wait a second, then try again
-        world.wait(1)
-        world.browser.find_by_css(css_selector).click()
+    attempt = 0
+    result = False
+    while attempt < attempts:
+        try:
+            world.css_find(css_selector)[index].click()
+            result = True
+            break
+        except WebDriverException:
+            # Occasionally, MathJax or other JavaScript can cover up
+            # an element temporarily.
+            # If this happens, wait a second, then try again
+            world.wait(1)
+            attempt += 1
+        except:
+            attempt += 1
+    return result
 
 
 @world.absorb
@@ -158,3 +167,8 @@ def click_tools():
     tools_css = 'li.nav-course-tools'
     if world.browser.is_element_present_by_css(tools_css):
         world.css_click(tools_css)
+
+
+@world.absorb
+def is_mac():
+    return platform.mac_ver()[0] is not ''