dbx/packages/app-tests/dataGridColumnVisibility.test.ts

import { strict as assert } from "node:assert";
import test from "node:test";
import {
  filterColumnVisibilityOptions,
  nextHiddenColumnIndexes,
  visibleColumnIndexesForFilter,
} from "../../apps/desktop/src/lib/dataGridColumnVisibility.ts";

test("filters column visibility options by trimmed case-insensitive text", () => {
  const options = filterColumnVisibilityOptions(["id", "created_at", "CustomerName"], "  NAME ");

  assert.deepEqual(options, [{ column: "CustomerName", index: 2 }]);
});

test("removes hidden indexes from visible columns", () => {
  const indexes = visibleColumnIndexesForFilter([0, 1, 2, 3], new Set([1, 3]));

  assert.deepEqual(indexes, [0, 2]);
});

test("keeps the last visible column when toggling visibility", () => {
  const hidden = nextHiddenColumnIndexes({
    columnIndex: 0,
    hiddenIndexes: new Set([1, 2]),
    totalColumns: 3,
  });

  assert.deepEqual([...hidden].sort(), [1, 2]);
});

test("shows a hidden column again when toggled", () => {
  const hidden = nextHiddenColumnIndexes({
    columnIndex: 1,
    hiddenIndexes: new Set([1, 2]),
    totalColumns: 4,
  });

  assert.deepEqual([...hidden].sort(), [2]);
});