[SI-2944] - correct filtering for stations

projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.spec.ts

@@ -243,7 +243,7 @@ describe('SetFilterComponent', () => {
     component['_valueGetter'] = () => 'oncle tom';
     component.setItems = { oncle: { checked: true } };
     const returnValue = component.doesFilterPass({} as any);
-    expect(returnValue).toBeFalsy();
+    expect(returnValue).toBeTruthy();
   });
 
   it('should set params via agInit()', () => {

projects/grid-failure-information-app/src/app/shared/filters/ag-grid/set-filter/set-filter.component.ts

@@ -89,8 +89,28 @@ export class SetFilterComponent implements AgFilterComponent, OnDestroy {
   }
 
   doesFilterPass(params: IDoesFilterPassParams): boolean {
-    const itemKey = this._valueGetter(params.node);
-    return this.setItems[itemKey || null] !== undefined && this.setItems[itemKey || null].checked;
+    const nodeValue = this._valueGetter(params.node);
+    let passed: boolean = false;
+
+    for (let itemKey in this.setItems) {
+      if (isNaN(nodeValue)) {
+        if (itemKey === 'null') {
+          passed = !nodeValue || nodeValue === ''; // nodeValue is falsy or empty string
+        } else {
+          passed = !!nodeValue && nodeValue.includes(itemKey);
+        }
+      } else {
+        // is numeric or null
+        if (!nodeValue) {
+          passed = nodeValue === null && itemKey === 'null';
+        } else {
+          passed = nodeValue.toString() === itemKey;
+        }
+      }
+      passed = passed && this.setItems[itemKey].checked;
+      if (passed) return passed;
+    }
+    return passed;
   }
 
   getModel(): any {