Refactor test_utils bundle

13 files changed, 148 insertions, 154 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f2fb6d3101c..66f8b6e6f9a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,6 +8,7 @@ cache:
 variables:
   MYSQL_ALLOW_EMPTY_PASSWORD: "1"
   RAILS_ENV: "test"
+  NODE_ENV: "test"
   SIMPLECOV: "true"
   SETUP_DB: "true"
   USE_BUNDLE_INSTALL: "true"
@@ -129,9 +130,7 @@ setup-test-env:
   stage: prepare
   script:
     - node --version
-    - yarn --version
     - yarn install --pure-lockfile
-    - yarn check # ensure that yarn.lock matches package.json
     - bundle exec rake gitlab:assets:compile
     - bundle exec ruby -Ispec -e 'require "spec_helper" ; TestEnv.init'
   artifacts:
diff --git a/Gemfile b/Gemfile
index 910ab318227..6a45b3d7339 100644
--- a/Gemfile
+++ b/Gemfile
@@ -223,7 +223,7 @@ gem 'oj', '~> 2.17.4'
 gem 'chronic', '~> 0.10.2'
 gem 'chronic_duration', '~> 0.10.6'
 
-gem 'webpack-rails', '~> 0.9.9'
+gem 'webpack-rails', '~> 0.9.10'
 gem 'rack-proxy', '~> 0.6.0'
 
 gem 'sass-rails', '~> 5.0.6'
diff --git a/Gemfile.lock b/Gemfile.lock
index 304fc9f2bb3..50ca9af7a7a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -823,8 +823,8 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    webpack-rails (0.9.9)
-      rails (>= 3.2.0)
+    webpack-rails (0.9.10)
+      railties (>= 3.2.0)
     websocket-driver (0.6.3)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
@@ -1026,7 +1026,7 @@ DEPENDENCIES
   virtus (~> 1.0.1)
   vmstat (~> 2.3.0)
   webmock (~> 1.24.0)
-  webpack-rails (~> 0.9.9)
+  webpack-rails (~> 0.9.10)
   wikicloth (= 0.8.1)
 
 BUNDLED WITH
diff --git a/app/assets/javascripts/main.js b/app/assets/javascripts/main.js
index 665a59f3183..5b50bc62876 100644
--- a/app/assets/javascripts/main.js
+++ b/app/assets/javascripts/main.js
@@ -187,6 +187,9 @@ import './visibility_select';
 import './wikis';
 import './zen_mode';
 
+// eslint-disable-next-line global-require
+if (process.env.NODE_ENV !== 'production') require('./test_utils/');
+
 document.addEventListener('beforeunload', function () {
   // Unbind scroll events
   $(document).off('scroll');
diff --git a/app/assets/javascripts/test_utils/index.js b/app/assets/javascripts/test_utils/index.js
new file mode 100644
index 00000000000..ef401abce2d
--- /dev/null
+++ b/app/assets/javascripts/test_utils/index.js
@@ -0,0 +1,4 @@
+import simulateDrag from './simulate_drag';
+
+// Export to global space for rspec to use
+window.simulateDrag = simulateDrag;
diff --git a/app/assets/javascripts/test_utils/simulate_drag.js b/app/assets/javascripts/test_utils/simulate_drag.js
index d48f2404fa5..e39213cb098 100644
--- a/app/assets/javascripts/test_utils/simulate_drag.js
+++ b/app/assets/javascripts/test_utils/simulate_drag.js
@@ -1,143 +1,137 @@
-/* eslint-disable wrap-iife, func-names, strict, no-var, vars-on-top, no-param-reassign, object-shorthand, no-shadow, comma-dangle, prefer-template, consistent-return, no-mixed-operators, no-unused-vars, no-unused-expressions, prefer-arrow-callback, max-len */
-(function () {
-  'use strict';
-
-  function simulateEvent(el, type, options) {
-    var event;
-    if (!el) return;
-    var ownerDocument = el.ownerDocument;
-
-    options = options || {};
-
-    if (/^mouse/.test(type)) {
-      event = ownerDocument.createEvent('MouseEvents');
-      event.initMouseEvent(type, true, true, ownerDocument.defaultView,
-      options.button, options.screenX, options.screenY, options.clientX, options.clientY,
-      options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
-    } else {
-      event = ownerDocument.createEvent('CustomEvent');
-
-      event.initCustomEvent(type, true, true, ownerDocument.defaultView,
-      options.button, options.screenX, options.screenY, options.clientX, options.clientY,
-      options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
-
-      event.dataTransfer = {
-        data: {},
-
-        setData: function (type, val) {
-          this.data[type] = val;
-        },
-
-        getData: function (type) {
-          return this.data[type];
-        }
-      };
-    }
-
-    if (el.dispatchEvent) {
-      el.dispatchEvent(event);
-    } else if (el.fireEvent) {
-      el.fireEvent('on' + type, event);
-    }
-
-    return event;
-  }
-
-  function isLast(target) {
-    var el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
-    var children = el.children;
-
-    return children.length - 1 === target.index;
+function simulateEvent(el, type, options = {}) {
+  let event;
+  if (!el) return null;
+
+  if (/^mouse/.test(type)) {
+    event = el.ownerDocument.createEvent('MouseEvents');
+    event.initMouseEvent(type, true, true, el.ownerDocument.defaultView,
+    options.button, options.screenX, options.screenY, options.clientX, options.clientY,
+    options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
+  } else {
+    event = el.ownerDocument.createEvent('CustomEvent');
+
+    event.initCustomEvent(type, true, true, el.ownerDocument.defaultView,
+    options.button, options.screenX, options.screenY, options.clientX, options.clientY,
+    options.ctrlKey, options.altKey, options.shiftKey, options.metaKey, options.button, el);
+
+    event.dataTransfer = {
+      data: {},
+
+      setData(key, val) {
+        this.data[key] = val;
+      },
+
+      getData(key) {
+        return this.data[key];
+      },
+    };
   }
 
-  function getTarget(target) {
-    var el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
-    var children = el.children;
-
-    return (
-      children[target.index] ||
-      children[target.index === 'first' ? 0 : -1] ||
-      children[target.index === 'last' ? children.length - 1 : -1] ||
-      el
-    );
+  if (el.dispatchEvent) {
+    el.dispatchEvent(event);
+  } else if (el.fireEvent) {
+    el.fireEvent(`on${type}`, event);
   }
 
-  function getRect(el) {
-    var rect = el.getBoundingClientRect();
-    var width = rect.right - rect.left;
-    var height = rect.bottom - rect.top + 10;
-
-    return {
-      x: rect.left,
-      y: rect.top,
-      cx: rect.left + width / 2,
-      cy: rect.top + height / 2,
-      w: width,
-      h: height,
-      hw: width / 2,
-      wh: height / 2
-    };
+  return event;
+}
+
+function isLast(target) {
+  const el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
+  const children = el.children;
+
+  return children.length - 1 === target.index;
+}
+
+function getTarget(target) {
+  const el = typeof target.el === 'string' ? document.getElementById(target.el.substr(1)) : target.el;
+  const children = el.children;
+
+  return (
+    children[target.index] ||
+    children[target.index === 'first' ? 0 : -1] ||
+    children[target.index === 'last' ? children.length - 1 : -1] ||
+    el
+  );
+}
+
+function getRect(el) {
+  const rect = el.getBoundingClientRect();
+  const width = rect.right - rect.left;
+  const height = (rect.bottom - rect.top) + 10;
+
+  return {
+    x: rect.left,
+    y: rect.top,
+    cx: rect.left + (width / 2),
+    cy: rect.top + (height / 2),
+    w: width,
+    h: height,
+    hw: width / 2,
+    wh: height / 2,
+  };
+}
+
+export default function simulateDrag(options) {
+  const { to, from } = options;
+  to.el = to.el || from.el;
+
+  const fromEl = getTarget(from);
+  const toEl = getTarget(to);
+  const firstEl = getTarget({
+    el: to.el,
+    index: 'first',
+  });
+  const lastEl = getTarget({
+    el: options.to.el,
+    index: 'last',
+  });
+
+  const fromRect = getRect(fromEl);
+  const toRect = getRect(toEl);
+  const firstRect = getRect(firstEl);
+  const lastRect = getRect(lastEl);
+
+  const startTime = new Date().getTime();
+  const duration = options.duration || 1000;
+
+  simulateEvent(fromEl, 'mousedown', {
+    button: 0,
+    clientX: fromRect.cx,
+    clientY: fromRect.cy,
+  });
+
+  if (options.ontap) options.ontap();
+  window.SIMULATE_DRAG_ACTIVE = 1;
+
+  if (options.to.index === 0) {
+    toRect.cy = firstRect.y;
+  } else if (isLast(options.to)) {
+    toRect.cy = lastRect.y + lastRect.h + 50;
   }
 
-  function simulateDrag(options, callback) {
-    options.to.el = options.to.el || options.from.el;
+  const dragInterval = setInterval(() => {
+    const progress = (new Date().getTime() - startTime) / duration;
+    const x = (fromRect.cx + ((toRect.cx - fromRect.cx) * progress));
+    const y = (fromRect.cy + ((toRect.cy - fromRect.cy) * progress));
+    const overEl = fromEl.ownerDocument.elementFromPoint(x, y);
 
-    var fromEl = getTarget(options.from);
-    var toEl = getTarget(options.to);
-    var firstEl = getTarget({
-      el: options.to.el,
-      index: 'first'
+    simulateEvent(overEl, 'mousemove', {
+      clientX: x,
+      clientY: y,
     });
-    var lastEl = getTarget({
-      el: options.to.el,
-      index: 'last'
-    });
-    var scrollable = options.scrollable;
-
-    var fromRect = getRect(fromEl);
-    var toRect = getRect(toEl);
-    var firstRect = getRect(firstEl);
-    var lastRect = getRect(lastEl);
-
-    var startTime = new Date().getTime();
-    var duration = options.duration || 1000;
-    simulateEvent(fromEl, 'mousedown', { button: 0 });
-    options.ontap && options.ontap();
-    window.SIMULATE_DRAG_ACTIVE = 1;
-
-    if (options.to.index === 0) {
-      toRect.cy = firstRect.y;
-    } else if (isLast(options.to)) {
-      toRect.cy = lastRect.y + lastRect.h + 50;
-    }
 
-    var dragInterval = setInterval(function loop() {
-      var progress = (new Date().getTime() - startTime) / duration;
-      var x = (fromRect.cx + (toRect.cx - fromRect.cx) * progress) - scrollable.scrollLeft;
-      var y = (fromRect.cy + (toRect.cy - fromRect.cy) * progress) - scrollable.scrollTop;
-      var overEl = fromEl.ownerDocument.elementFromPoint(x, y);
-
-      simulateEvent(overEl, 'mousemove', {
-        clientX: x,
-        clientY: y
-      });
-
-      if (progress >= 1) {
-        options.ondragend && options.ondragend();
-        simulateEvent(toEl, 'mouseup');
-        clearInterval(dragInterval);
-        window.SIMULATE_DRAG_ACTIVE = 0;
-      }
-    }, 100);
-
-    return {
-      target: fromEl,
-      fromList: fromEl.parentNode,
-      toList: toEl.parentNode
-    };
-  }
-
-  // Export
-  window.simulateEvent = simulateEvent;
-  window.simulateDrag = simulateDrag;
-})();
+    if (progress >= 1) {
+      if (options.ondragend) options.ondragend();
+      simulateEvent(toEl, 'mouseup');
+      clearInterval(dragInterval);
+      window.SIMULATE_DRAG_ACTIVE = 0;
+    }
+  }, 100);
+
+  return {
+    target: fromEl,
+    fromList: fromEl.parentNode,
+    toList: toEl.parentNode,
+  };
+}
diff --git a/app/views/groups/milestones/show.html.haml b/app/views/groups/milestones/show.html.haml
index 8e83b2002b2..33e68bc766e 100644
--- a/app/views/groups/milestones/show.html.haml
+++ b/app/views/groups/milestones/show.html.haml
@@ -1,8 +1,4 @@
 = render "header_title"
-
-- content_for :page_specific_javascripts do
-  = page_specific_javascript_bundle_tag('simulate_drag') if Rails.env.test?
-
 = render 'shared/milestones/top', milestone: @milestone, group: @group
 = render 'shared/milestones/tabs', milestone: @milestone, show_project_name: true
 = render 'shared/milestones/sidebar', milestone: @milestone, affix_offset: 102
diff --git a/app/views/projects/boards/_show.html.haml b/app/views/projects/boards/_show.html.haml
index added3f669b..d93eac63bd3 100644
--- a/app/views/projects/boards/_show.html.haml
+++ b/app/views/projects/boards/_show.html.haml
@@ -6,7 +6,6 @@
   = page_specific_javascript_bundle_tag('common_vue')
   = page_specific_javascript_bundle_tag('filtered_search')
   = page_specific_javascript_bundle_tag('boards')
-  = page_specific_javascript_bundle_tag('simulate_drag') if Rails.env.test?
 
   %script#js-board-template{ type: "text/x-template" }= render "projects/boards/components/board"
   %script#js-board-list-template{ type: "text/x-template" }= render "projects/boards/components/board_list"
diff --git a/app/views/projects/labels/index.html.haml b/app/views/projects/labels/index.html.haml
index 8d4a91cb64c..29f861c09c6 100644
--- a/app/views/projects/labels/index.html.haml
+++ b/app/views/projects/labels/index.html.haml
@@ -3,9 +3,6 @@
 - hide_class = ''
 = render "projects/issues/head"
 
-- content_for :page_specific_javascripts do
-  = page_specific_javascript_bundle_tag('simulate_drag') if Rails.env.test?
-
 - if @labels.exists? || @prioritized_labels.exists?
   %div{ class: container_class }
     .top-area.adjust
diff --git a/app/views/projects/milestones/show.html.haml b/app/views/projects/milestones/show.html.haml
index f612b5c7d6b..5249d752585 100644
--- a/app/views/projects/milestones/show.html.haml
+++ b/app/views/projects/milestones/show.html.haml
@@ -3,9 +3,6 @@
 - page_description @milestone.description
 = render "projects/issues/head"
 
-- content_for :page_specific_javascripts do
-  = page_specific_javascript_bundle_tag('simulate_drag') if Rails.env.test?
-
 %div{ class: container_class }
   .detail-page-header.milestone-page-header
     .status-box{ class: status_box_class(@milestone) }
diff --git a/config/webpack.config.js b/config/webpack.config.js
index 70d98b022c1..728c2a64053 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.js
@@ -23,7 +23,6 @@ var config = {
     main:                 './main.js',
     blob:                 './blob_edit/blob_bundle.js',
     boards:               './boards/boards_bundle.js',
-    simulate_drag:        './test_utils/simulate_drag.js',
     cycle_analytics:      './cycle_analytics/cycle_analytics_bundle.js',
     commit_pipelines:     './commit/pipelines/pipelines_bundle.js',
     diff_notes:           './diff_notes/diff_notes_bundle.js',
diff --git a/spec/features/milestones/milestones_spec.rb b/spec/features/milestones/milestones_spec.rb
index 8de9942c54e..2fa3e72ab08 100644
--- a/spec/features/milestones/milestones_spec.rb
+++ b/spec/features/milestones/milestones_spec.rb
@@ -76,6 +76,7 @@ describe 'Milestone draggable', feature: true, js: true do
     create(:issue, params.merge(title: 'Foo', project: project, milestone: milestone))
 
     visit namespace_project_milestone_path(project.namespace, project, milestone)
+    scroll_into_view('.milestone-content')
     drag_to(selector: '.issues-sortable-list', list_to_index: 1)
 
     wait_for_ajax
@@ -86,8 +87,13 @@ describe 'Milestone draggable', feature: true, js: true do
 
     visit namespace_project_milestone_path(project.namespace, project, milestone)
     page.find("a[href='#tab-merge-requests']").click
+    scroll_into_view('.milestone-content')
     drag_to(selector: '.merge_requests-sortable-list', list_to_index: 1)
 
     wait_for_ajax
   end
+
+  def scroll_into_view(selector)
+    page.evaluate_script("document.querySelector('#{selector}').scrollIntoView();")
+  end
 end
diff --git a/spec/support/drag_to_helper.rb b/spec/support/drag_to_helper.rb
index 0c0659d3ecd..ae149631ed9 100644
--- a/spec/support/drag_to_helper.rb
+++ b/spec/support/drag_to_helper.rb
@@ -3,11 +3,11 @@ module DragTo
     evaluate_script("simulateDrag({scrollable: $('#{scrollable}').get(0), from: {el: $('#{selector}').eq(#{list_from_index}).get(0), index: #{from_index}}, to: {el: $('#{selector}').eq(#{list_to_index}).get(0), index: #{to_index}}});")
 
     Timeout.timeout(Capybara.default_max_wait_time) do
-      loop until drag_active?
+      loop while drag_active?
     end
   end
 
   def drag_active?
-    page.evaluate_script('window.SIMULATE_DRAG_ACTIVE').zero?
+    page.evaluate_script('window.SIMULATE_DRAG_ACTIVE').nonzero?
   end
 end