feat(tests): update few tests to improve coverage

src/app/modules/angular-slickgrid/formatters/__tests__/decimalFormatter.spec.ts

@@ -46,10 +46,12 @@ describe('the Decimal Formatter', () => {
     expect(output).toBe('99.10');
   });
 
-  it('should display a number with dollar sign and use "minDecimalPlaces" params', () => {
+  it('should display a number with dollar sign and use "minDecimalPlaces" (or the deprecated "decimalPlaces") params', () => {
     const input = 99.1;
-    const output = decimalFormatter(1, 1, input, { params: { minDecimalPlaces: 2 } } as Column, {});
-    expect(output).toBe('99.10');
+    const output1 = decimalFormatter(1, 1, input, { params: { minDecimalPlaces: 2 } } as Column, {});
+    const output2 = decimalFormatter(1, 1, input, { params: { decimalPlaces: 2 } } as Column, {});
+    expect(output1).toBe('99.10');
+    expect(output2).toBe('99.10');
   });
 
   it('should display a number with dollar sign and use "maxDecimal" params', () => {

src/app/modules/angular-slickgrid/formatters/maskFormatter.ts

@@ -16,16 +16,7 @@ export const maskFormatter: Formatter = (row: number, cell: number, value: any,
   if (value) {
     let i = 0;
     const v = value.toString();
-    return mask.replace(/[09A]/gi, (match: string) => {
-      // only replace the char when the mask is a 0 or 9 for a digit OR the mask is "A" and the char is a non-digit meaning a string char
-      if (
-        ((match === '0' || match === '9') && /\d*/g.test(v[i]))    // mask is 0 or 9 and value is a digit
-        || (match.toUpperCase() === 'A' && /[^\d]*/gi.test(v[i]))  // OR mask is an "A" and value is non-digit
-      ) {
-        return v[i++] || '';
-      }
-      return '';
-    });
+    return mask.replace(/[09A]/gi, () => v[i++] || '');
   }
   return value;
 };

src/app/modules/angular-slickgrid/services/__tests__/extension.service.spec.ts

@@ -56,7 +56,7 @@ const extensionHeaderMenuStub = {
   translateHeaderMenu: jest.fn()
 };
 
-describe('GridStateService', () => {
+describe('ExtensionService', () => {
   let service: ExtensionService;
   let translate: TranslateService;