feat: batch change date and time relatively (#17717)

Co-authored-by: marcel.kuehne <>
Co-authored-by: Zack Pollard <zackpollard@ymail.com>

server/src/validation.spec.ts

@@ -1,7 +1,8 @@
 import { plainToInstance } from 'class-transformer';
 import { validate } from 'class-validator';
 import { DateTime } from 'luxon';
-import { IsDateStringFormat, MaxDateString } from 'src/validation';
+import { IsDateStringFormat, IsNotSiblingOf, MaxDateString, Optional } from 'src/validation';
+import { describe } from 'vitest';
 
 describe('Validation', () => {
   describe('MaxDateString', () => {
@@ -54,4 +55,38 @@ describe('Validation', () => {
       await expect(validate(dto)).resolves.toHaveLength(1);
     });
   });
+
+  describe('IsNotSiblingOf', () => {
+    class MyDto {
+      @IsNotSiblingOf(['attribute2'])
+      @Optional()
+      attribute1?: string;
+
+      @IsNotSiblingOf(['attribute1', 'attribute3'])
+      @Optional()
+      attribute2?: string;
+
+      @IsNotSiblingOf(['attribute2'])
+      @Optional()
+      attribute3?: string;
+
+      @Optional()
+      unrelatedAttribute?: string;
+    }
+
+    it('passes when only one attribute is present', async () => {
+      const dto = plainToInstance(MyDto, { attribute1: 'value1', unrelatedAttribute: 'value2' });
+      await expect(validate(dto)).resolves.toHaveLength(0);
+    });
+
+    it('fails when colliding attributes are present', async () => {
+      const dto = plainToInstance(MyDto, { attribute1: 'value1', attribute2: 'value2' });
+      await expect(validate(dto)).resolves.toHaveLength(2);
+    });
+
+    it('passes when no colliding attributes are present', async () => {
+      const dto = plainToInstance(MyDto, { attribute1: 'value1', attribute3: 'value2' });
+      await expect(validate(dto)).resolves.toHaveLength(0);
+    });
+  });
 });