fix(#635) Locale pipes optimizations unit tests

Author: ben12

libs/transloco-locale/src/lib/pipes/transloco-date.pipe.ts

@@ -6,6 +6,7 @@ import {
   OnDestroy,
 } from '@angular/core';
 import { isNil } from '@ngneat/transloco';
+import { isDate } from '../helpers';
 import { getDefaultOptions } from '../shared';
 import { LOCALE_CONFIG } from '../transloco-locale.config';
 import { TranslocoLocaleService } from '../transloco-locale.service';
@@ -61,8 +62,8 @@ export class TranslocoDatePipe
     return this.getComparableDate(this.lastValue) === this.getComparableDate(value);
   }
 
-  private getComparableDate(value?: any) {
-    return value?.getTime ? value.getTime() : value;
+  private getComparableDate(value?: ValidDate) {
+    return isDate(value) ? (value as Date).getTime() : value;
   }
 
   ngOnDestroy(): void {

libs/transloco-locale/src/lib/pipes/transloco-locale.pipe.ts

@@ -44,7 +44,7 @@ export abstract class TranslocoLocalePipe<VALUE = unknown, ARGS extends unknown[
     return JSON.stringify(args) === this.lastArgs;
   }
 
-  invalidate() {
+  protected invalidate() {
     this.lastValue = undefined;
     this.lastArgs = undefined;
     this.lastResult = '';

libs/transloco-locale/src/lib/tests/pipes/transloco-currency.pipe.spec.ts

@@ -69,6 +69,22 @@ describe('TranslocoCurrencyPipe', () => {
       expect(call[1].maximumFractionDigits).toEqual(3);
     });
 
+    it('should return previous result with same config', () => {
+      const config1 = { useGrouping: false, maximumFractionDigits: 3 };
+      const first = pipe.transform('123', undefined, config1);
+
+      const call = (Intl.NumberFormat as any).calls.argsFor(0);
+      expect(call[1].useGrouping).toBeFalsy();
+      expect(call[1].maximumFractionDigits).toEqual(3);
+
+      const config2 = { useGrouping: false, maximumFractionDigits: 3 };
+      (Intl.NumberFormat as any).calls.reset();
+      const second = pipe.transform('123', undefined, config2);
+
+      expect(Intl.NumberFormat).not.toHaveBeenCalled();
+      expect(second).toBe(first);
+    });
+
     it('should take number options from locale settings', () => {
       service = mockLocaleService('es-ES');
 

libs/transloco-locale/src/lib/tests/pipes/transloco-date.pipe.spec.ts

@@ -38,6 +38,27 @@ describe('TranslocoDatePipe', () => {
     expect(call[1].timeStyle).toEqual('medium');
   });
 
+  it('should return previous result with same config', () => {
+    spyOn(Intl, 'DateTimeFormat').and.callThrough();
+
+    const pipe = new TranslocoDatePipe(
+      service,
+      cdr,
+      defaultConfig.localeConfig
+    );
+    const first = pipe.transform(date, { dateStyle: 'medium', timeStyle: 'medium' });
+
+    const call = (Intl.DateTimeFormat as any).calls.argsFor(0);
+    expect(call[1].dateStyle).toEqual('medium');
+    expect(call[1].timeStyle).toEqual('medium');
+
+    (Intl.DateTimeFormat as any).calls.reset();
+    const second = pipe.transform(date, { dateStyle: 'medium', timeStyle: 'medium' });
+
+    expect(Intl.DateTimeFormat).not.toHaveBeenCalled();
+    expect(second).toBe(first);
+  });
+
   it('should consider a global date config', () => {
     spyOn(Intl, 'DateTimeFormat').and.callThrough();
     const pipe = new TranslocoDatePipe(service, cdr, LOCALE_CONFIG_MOCK);

libs/transloco-locale/src/lib/tests/pipes/transloco-decimal.pipe.spec.ts

@@ -56,6 +56,24 @@ describe('TranslocoDecimalPipe', () => {
     expect(call[1].maximumFractionDigits).toEqual(3);
   });
 
+  it('should return previous result with same config', () => {
+    spyOn(Intl, 'NumberFormat').and.callThrough();
+
+    const config1 = { useGrouping: false, maximumFractionDigits: 3 };
+    const first = pipe.transform('123', config1);
+
+    const call = (Intl.NumberFormat as any).calls.argsFor(0);
+    expect(call[1].useGrouping).toBeFalsy();
+    expect(call[1].maximumFractionDigits).toEqual(3);
+
+    const config2 = { useGrouping: false, maximumFractionDigits: 3 };
+    (Intl.NumberFormat as any).calls.reset();
+    const second = pipe.transform('123', config2);
+
+    expect(Intl.NumberFormat).not.toHaveBeenCalled();
+    expect(second).toBe(first);
+  });
+
   it('should handle none transformable values', () => {
     expect(pipe.transform(null as any)).toEqual('');
     expect(pipe.transform({} as any)).toEqual('');

libs/transloco-locale/src/lib/tests/pipes/transloco-percent.pipe.spec.ts

@@ -51,4 +51,22 @@ describe('TranslocoPercentPipe', () => {
     expect(call[1].useGrouping).toBeTruthy();
     expect(call[1].maximumFractionDigits).toEqual(3);
   });
+
+  it('should return previous result with same config', () => {
+    spyOn(Intl, 'NumberFormat').and.callThrough();
+
+    const config1 = { useGrouping: false, maximumFractionDigits: 3 };
+    const first = pipe.transform('123', config1);
+
+    const call = (Intl.NumberFormat as any).calls.argsFor(0);
+    expect(call[1].useGrouping).toBeFalsy();
+    expect(call[1].maximumFractionDigits).toEqual(3);
+
+    const config2 = { useGrouping: false, maximumFractionDigits: 3 };
+    (Intl.NumberFormat as any).calls.reset();
+    const second = pipe.transform('123', config2);
+
+    expect(Intl.NumberFormat).not.toHaveBeenCalled();
+    expect(second).toBe(first);
+  });
 });