1 files changed, 108 insertions, 0 deletions
diff --git a/devtools/client/inspector/grids/test/browser_grids_accordion-state.js b/devtools/client/inspector/grids/test/browser_grids_accordion-state.js
new file mode 100644
index 0000000000..c02fc85dfa
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+++ b/devtools/client/inspector/grids/test/browser_grids_accordion-state.js
@@ -0,0 +1,108 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that the grid's accordion state is persistent through hide/show in the layout
+// view.
+
+const TEST_URI = `
+  <style type='text/css'>
+    #grid {
+      display: grid;
+    }
+  </style>
+  <div id="grid">
+    <div id="cell1">cell1</div>
+    <div id="cell2">cell2</div>
+  </div>
+`;
+
+const GRID_OPENED_PREF = "devtools.layout.grid.opened";
+const GRID_PANE_SELECTOR = "#layout-grid-section";
+const ACCORDION_HEADER_SELECTOR = ".accordion-header";
+const ACCORDION_CONTENT_SELECTOR = ".accordion-content";
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, gridInspector, toolbox } = await openLayoutView();
+  const { document: doc } = gridInspector;
+
+  await testAccordionStateAfterClickingHeader(doc);
+  await testAccordionStateAfterSwitchingSidebars(inspector, doc);
+  await testAccordionStateAfterReopeningLayoutView(toolbox);
+
+  Services.prefs.clearUserPref(GRID_OPENED_PREF);
+});
+
+async function testAccordionStateAfterClickingHeader(doc) {
+  const item = await waitFor(() => doc.querySelector(GRID_PANE_SELECTOR));
+  const header = item.querySelector(ACCORDION_HEADER_SELECTOR);
+  const content = item.querySelector(ACCORDION_CONTENT_SELECTOR);
+
+  info("Checking initial state of the grid panel.");
+  ok(
+    !content.hidden && content.childElementCount > 0,
+    "The grid panel content is visible."
+  );
+  ok(
+    Services.prefs.getBoolPref(GRID_OPENED_PREF),
+    `${GRID_OPENED_PREF} is pref on by default.`
+  );
+
+  info("Clicking the grid header to hide the grid panel.");
+  header.click();
+
+  info("Checking the new state of the grid panel.");
+  ok(content.hidden, "The grid panel content is hidden.");
+  ok(
+    !Services.prefs.getBoolPref(GRID_OPENED_PREF),
+    `${GRID_OPENED_PREF} is pref off.`
+  );
+}
+
+async function testAccordionStateAfterSwitchingSidebars(inspector, doc) {
+  info(
+    "Checking the grid accordion state is persistent after switching sidebars."
+  );
+
+  info("Selecting the computed view.");
+  inspector.sidebar.select("computedview");
+
+  info("Selecting the layout view.");
+  inspector.sidebar.select("layoutview");
+
+  const item = await waitFor(() => doc.querySelector(GRID_PANE_SELECTOR));
+  const content = item.querySelector(ACCORDION_CONTENT_SELECTOR);
+
+  info("Checking the state of the grid panel.");
+  ok(content.hidden, "The grid panel content is hidden.");
+  ok(
+    !Services.prefs.getBoolPref(GRID_OPENED_PREF),
+    `${GRID_OPENED_PREF} is pref off.`
+  );
+}
+
+async function testAccordionStateAfterReopeningLayoutView(toolbox) {
+  info(
+    "Checking the grid accordion state is persistent after closing and re-opening the " +
+      "layout view."
+  );
+
+  info("Closing the toolbox.");
+  await toolbox.destroy();
+
+  info("Re-opening the layout view.");
+  const { gridInspector } = await openLayoutView();
+  const { document: doc } = gridInspector;
+
+  const item = await waitFor(() => doc.querySelector(GRID_PANE_SELECTOR));
+  const content = item.querySelector(ACCORDION_CONTENT_SELECTOR);
+
+  info("Checking the state of the grid panel.");
+  ok(content.hidden, "The grid panel content is hidden.");
+  ok(
+    !Services.prefs.getBoolPref(GRID_OPENED_PREF),
+    `${GRID_OPENED_PREF} is pref off.`
+  );
+}