How to use the @rxweb/reactive-form-validators.NumericValueType.NegativeNumber function in @rxweb/reactive-form-validators

() => { 
            expect(RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber})(new FormControl(-12))).toBeNull(); 
          });

() => { 
            expect(RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber})(new FormControl(12))).toEqual({'numeric':{ message: 'Enter a valid numeric digit.', refValues: [ 12 ] } }); 
          });

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            dataType:['',], 
            negativeNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber })], 
            decimalNumber:['', RxwebValidators.numeric({allowDecimal:true })], 
            integerNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.PositiveNumber  ,conditionalExpression:(x,y) => x.dataType == "Integer"  })], 
            realNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.Both  ,conditionalExpression:'x => x.dataType == "Real"' })], 
            positiveNumber:['', RxwebValidators.numeric({message:'{{0}} is not a positive number' })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            dataType:['',], 
            integerNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.PositiveNumber  ,allowDecimal:false  ,conditionalExpression:(x,y) => x.dataType == "Number"  })], 
            realNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.Both  ,allowDecimal:false  ,conditionalExpression:'x => x.dataType == "Number"' })], 
            negativeNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber  ,allowDecimal:true  ,message:'{{0}} is not a negative number' })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            negativeNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber  ,allowDecimal:true  ,message:'{{0}} is not a negative number' })], 
        });
    }
}

import {  numeric,prop, NumericValueType, } from   "@rxweb/reactive-form-validators"   

export class UserInfo {

	@prop()
	dataType: string;

	@numeric({acceptValue:NumericValueType.NegativeNumber }) 
	negativeNumber: number;
	
	
	

	@numeric({allowDecimal:true }) 
	decimalNumber: number;
	
	
	

	//If you want to apply conditional expression of type 'function'
	@numeric({acceptValue:NumericValueType.PositiveNumber  ,conditionalExpression:(x,y) => x.dataType == "Integer"  }) 
	integerNumber: number;

import {  numeric,prop, NumericValueType, } from "@rxweb/reactive-form-validators"

export class UserInfo {

	@prop()
	dataType: string;

	//If you want to apply conditional expression of type 'function'
	@numeric({acceptValue:NumericValueType.PositiveNumber  ,allowDecimal:false  ,conditionalExpression:(x,y) => x.dataType == "Number"  }) 
	integerNumber: number;

	//If you want to apply conditional expression of type 'string'
	@numeric({acceptValue:NumericValueType.Both  ,allowDecimal:false  ,conditionalExpression:'x => x.dataType == "Number"' }) 
	realNumber: number;

	@numeric({acceptValue:NumericValueType.NegativeNumber  ,allowDecimal:true  ,message:'{{0}} is not a negative number' }) 
	negativeNumber: number;

}

import {  numeric,prop, NumericValueType, } from "@rxweb/reactive-form-validators"

export class UserInfo {

	@numeric({acceptValue:NumericValueType.NegativeNumber  ,message:'{{0}} is not a negative number' }) 
	negativeNumber: number;

}

import {  numeric, NumericValueType, } from   "@rxweb/reactive-form-validators"   

export class UserInfo {

	@numeric({acceptValue:NumericValueType.NegativeNumber }) 
	negativeNumber: number;
	
	
	

}