fix(grid): Consider min/max width when setting defaultWidth property (#9218)

* fix(grid): Consider min/max width when setting defaultWidth property

Fix columnWidth as number scenario, adjust unit test scenarios

Co-authored-by: Stamen Stoychev <[email protected]>

Author: dkamburov

projects/igniteui-angular/src/lib/grids/grid-base.directive.ts

@@ -6230,13 +6230,42 @@ export abstract class IgxGridBaseDirective extends DisplayDensityBase implements
                 const columnWidthCombined = parseInt(this._columnWidth, 10) * (column.colEnd ? column.colEnd - column.colStart : 1);
                 column.defaultWidth = columnWidthCombined + 'px';
             } else {
-                column.defaultWidth = this._columnWidth;
+                // D.K. March 29th, 2021 #9145 Consider min/max width when setting defaultWidth property
+                column.defaultWidth = this.getExtremumBasedColWidth(column);
                 column.resetCaches();
             }
         });
         this.resetCachedWidths();
     }
 
+    /**
+     * @hidden
+     * @internal
+     */
+    protected getExtremumBasedColWidth(column: IgxColumnComponent): string {
+        let width = this._columnWidth;
+        if (width && typeof width !== 'string') {
+            width = String(width);
+        }
+        const minWidth = width.indexOf('%') === -1 ? column.minWidthPx : column.minWidthPercent;
+        const maxWidth = width.indexOf('%') === -1 ? column.maxWidthPx : column.maxWidthPercent;
+        if (column.hidden) {
+            return width;
+        }
+
+        if (minWidth > parseFloat(width)) {
+            width = String(column.minWidth);
+        } else if (maxWidth < parseFloat(width)) {
+            width = String(column.maxWidth);
+        }
+
+        // if no px or % are defined in maxWidth/minWidth consider it px
+        if (width.indexOf('%') === -1 && width.indexOf('px') === -1) {
+            width += 'px';
+        }
+        return width;
+    }
+
     protected resetNotifyChanges() {
         this._cdrRequestRepaint = false;
         this._cdrRequests = false;