1 files changed, 58 insertions, 0 deletions
diff --git a/devtools/client/inspector/grids/test/browser_grids_persist-color-palette.js b/devtools/client/inspector/grids/test/browser_grids_persist-color-palette.js
new file mode 100644
index 0000000000..0a4e10dfa0
--- /dev/null
+++ b/devtools/client/inspector/grids/test/browser_grids_persist-color-palette.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that the when a custom color has been previously set, we initialize
+// the grid with that color.
+
+const TEST_URI = `
+  <style type='text/css'>
+    #grid {
+      display: grid;
+    }
+  </style>
+  <div id="grid">
+    <div class="cell1">cell1</div>
+    <div class="cell2">cell2</div>
+  </div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, gridInspector, layoutView, toolbox } =
+    await openLayoutView();
+  const { document: doc } = gridInspector;
+  const { store } = inspector;
+  const cPicker = layoutView.swatchColorPickerTooltip;
+  const swatch = doc.querySelector(
+    "#layout-grid-container .layout-color-swatch"
+  );
+
+  info("Scrolling into view of the #grid color swatch.");
+  swatch.scrollIntoView();
+
+  info("Opening the color picker by clicking on the #grid color swatch.");
+  const onColorPickerReady = cPicker.once("ready");
+  swatch.click();
+  await onColorPickerReady;
+
+  await simulateColorPickerChange(cPicker, [51, 48, 0, 1]);
+
+  info("Closing the toolbox.");
+  await toolbox.destroy();
+  info("Open the toolbox again.");
+  await openLayoutView();
+
+  info("Check that the previously set custom color is used.");
+  is(
+    swatch.style.backgroundColor,
+    "rgb(51, 48, 0)",
+    "The color swatch's background is correct."
+  );
+  is(
+    store.getState().grids[0].color,
+    "#333000",
+    "The grid color state is correct."
+  );
+});