1 files changed, 84 insertions, 0 deletions
diff --git a/devtools/client/inspector/rules/test/browser_rules_edit-property-remove_03.js b/devtools/client/inspector/rules/test/browser_rules_edit-property-remove_03.js
new file mode 100644
index 0000000000..d5bc376dd4
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+++ b/devtools/client/inspector/rules/test/browser_rules_edit-property-remove_03.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests removing a property by clearing the property name and pressing shift
+// and tab keys, and checks if the focus is moved to the appropriate editable
+// field.
+
+const TEST_URI = `
+  <style type='text/css'>
+  #testid {
+    background-color: #00F;
+    color: #00F;
+  }
+  </style>
+  <div id='testid'>Styled Node</div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openRuleView();
+  await selectNode("#testid", inspector);
+
+  info("Getting the second property in the rule");
+  const rule = getRuleViewRuleEditor(view, 1).rule;
+  let prop = rule.textProps[1];
+
+  info("Clearing the property value and pressing shift-tab");
+  let editor = await focusEditableField(view, prop.editor.valueSpan);
+  const onValueDone = view.once("ruleview-changed");
+  editor.input.value = "";
+  EventUtils.synthesizeKey("VK_TAB", { shiftKey: true }, view.styleWindow);
+  await onValueDone;
+
+  let newValue = await getRulePropertyValue(0, 0, "color");
+  is(newValue, "", "color should have been unset.");
+  is(
+    prop.editor.valueSpan.textContent,
+    "",
+    "'' property value is correctly set."
+  );
+
+  info("Pressing shift-tab again to focus the previous property value");
+  const onValueFocused = view.once("ruleview-changed");
+  EventUtils.synthesizeKey("VK_TAB", { shiftKey: true }, view.styleWindow);
+  await onValueFocused;
+
+  info("Getting the first property in the rule");
+  prop = rule.textProps[0];
+
+  editor = inplaceEditor(view.styleDocument.activeElement);
+  is(
+    inplaceEditor(prop.editor.valueSpan),
+    editor,
+    "Focus should have moved to the previous property value"
+  );
+
+  info("Pressing shift-tab again to focus the property name");
+  const onNameFocused = view.once("ruleview-changed");
+  EventUtils.synthesizeKey("VK_TAB", { shiftKey: true }, view.styleWindow);
+  await onNameFocused;
+
+  info("Removing the name and pressing shift-tab to focus the selector");
+  const onNameDeleted = view.once("ruleview-changed");
+  EventUtils.synthesizeKey("VK_DELETE", {}, view.styleWindow);
+  EventUtils.synthesizeKey("VK_TAB", { shiftKey: true }, view.styleWindow);
+  await onNameDeleted;
+
+  newValue = await getRulePropertyValue(0, 0, "background-color");
+  is(newValue, "", "background-color should have been unset.");
+
+  editor = inplaceEditor(view.styleDocument.activeElement);
+  is(
+    inplaceEditor(rule.editor.selectorText),
+    editor,
+    "Focus should have moved to the selector text."
+  );
+  is(rule.textProps.length, 0, "All properties should have been removed.");
+  ok(
+    !rule.editor.propertyList.hasChildNodes(),
+    "Should not have any properties."
+  );
+});