1 files changed, 68 insertions, 0 deletions
diff --git a/browser/devtools/styleinspector/test/browser_ruleview_manipulation.js b/browser/devtools/styleinspector/test/browser_ruleview_manipulation.js
new file mode 100644
index 000000000..b077c5400
--- /dev/null
+++ b/browser/devtools/styleinspector/test/browser_ruleview_manipulation.js
@@ -0,0 +1,68 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+let doc;
+
+function simpleOverride()
+{
+  doc.body.innerHTML = '<div id="testid">Styled Node</div>';
+  let element = doc.getElementById("testid");
+  let elementStyle = new _ElementStyle(element);
+
+  let elementRule = elementStyle.rules[0];
+  let firstProp = elementRule.createProperty("background-color", "green", "");
+  let secondProp = elementRule.createProperty("background-color", "blue", "");
+  is(elementRule.textProps[0], firstProp, "Rules should be in addition order.");
+  is(elementRule.textProps[1], secondProp, "Rules should be in addition order.");
+
+  is(element.style.getPropertyValue("background-color"), "blue", "Second property should have been used.");
+
+  secondProp.remove();
+  is(element.style.getPropertyValue("background-color"), "green", "After deleting second property, first should be used.");
+
+  secondProp = elementRule.createProperty("background-color", "blue", "");
+  is(element.style.getPropertyValue("background-color"), "blue", "New property should be used.");
+
+  is(elementRule.textProps[0], firstProp, "Rules shouldn't have switched places.");
+  is(elementRule.textProps[1], secondProp, "Rules shouldn't have switched places.");
+
+  secondProp.setEnabled(false);
+  is(element.style.getPropertyValue("background-color"), "green", "After disabling second property, first value should be used");
+
+  firstProp.setEnabled(false);
+  is(element.style.getPropertyValue("background-color"), "", "After disabling both properties, value should be empty.");
+
+  secondProp.setEnabled(true);
+  is(element.style.getPropertyValue("background-color"), "blue", "Value should be set correctly after re-enabling");
+
+  firstProp.setEnabled(true);
+  is(element.style.getPropertyValue("background-color"), "blue", "Re-enabling an earlier property shouldn't make it override a later property.");
+  is(elementRule.textProps[0], firstProp, "Rules shouldn't have switched places.");
+  is(elementRule.textProps[1], secondProp, "Rules shouldn't have switched places.");
+
+  firstProp.setValue("purple", "");
+  is(element.style.getPropertyValue("background-color"), "blue", "Modifying an earlier property shouldn't override a later property.");
+
+  finishTest();
+}
+
+function finishTest()
+{
+  doc = null;
+  gBrowser.removeCurrentTab();
+  finish();
+}
+
+function test()
+{
+  waitForExplicitFinish();
+  gBrowser.selectedTab = gBrowser.addTab();
+  gBrowser.selectedBrowser.addEventListener("load", function(evt) {
+    gBrowser.selectedBrowser.removeEventListener(evt.type, arguments.callee, true);
+    doc = content.document;
+    waitForFocus(simpleOverride, content);
+  }, true);
+
+  content.location = "data:text/html,basic style inspector tests";
+}