added some unit tests

Author: egor-zalenski

redisinsight/ui/src/components/virtual-grid/tests/utils.spec.ts

@@ -0,0 +1,17 @@
+import { getColumnWidth } from '../utils'
+
+const getColumnWidthTests: any[] = [
+  [0, 500, [{ maxWidth: 70, minWidth: 50 }], 50],
+  [1, 500, [{ maxWidth: 70, minWidth: 50 }, { maxWidth: 170, minWidth: 20 }], 20],
+  [0, 500, [{ maxWidth: 470, minWidth: 450 }, { maxWidth: 170, minWidth: 20 }], 450],
+]
+
+const minColumnWidth = 10
+
+describe('getColumnWidth', () => {
+  it.each(getColumnWidthTests)('for input: %s (i), %s (width), %s (columns) should be output: %s',
+    (i, width, columns, expected) => {
+      const result = getColumnWidth(i, width, columns, minColumnWidth)
+      expect(result).toBe(expected)
+    })
+})