import { expect } from "chai" ; import { Checksum } from "../../lib/domain/Checksum" ; describe ( "Checksum" , ( ) => { describe ( ".empty()" , ( ) => { it ( "should return empty buffer" , ( ) => { expect ( Checksum . empty ( ) . toBuffer ( ) ) . to . deep . equal ( Buffer . alloc ( 4 ) ) ; } ) ; } ) ; describe ( ".equals()" , ( ) => { it ( "should return false when not equal" , ( ) => { const a = Checksum . fromBuffer ( Buffer . from ( "a" ) ) ; const b = Checksum . fromBuffer ( Buffer . from ( "b" ) ) ; expect ( a . equals ( b ) ) . to . equal ( false ) ; } ) ; it ( "should return true when equal" , ( ) => { const a = Checksum . fromBuffer ( Buffer . from ( "a" ) ) ; const b = Checksum . fromBuffer ( Buffer . from ( "a" ) ) ; expect ( a . equals ( b ) ) . to . equal ( true ) ; } ) ; } ) ; describe ( ".toNumber()" , ( ) => { it ( "should return the number" , ( ) => { const sut = Checksum . fromBuffer ( Buffer . from ( "a" ) ) ; expect ( sut . toNumber ( ) ) . to . equal ( 3251651376 ) ; } ) ; } ) ; describe ( ".toBuffer()" , ( ) => { it ( "shoudl return expected buffer" , ( ) => { const sut = Checksum . fromBuffer ( Buffer . from ( "a" ) ) ; expect ( sut . toBuffer ( ) . toString ( "hex" ) ) . to . deep . equal ( "c1d04330" ) ; } ) ; } ) ; describe ( ".toString()" , ( ) => { it ( "shoudl return expected buffer" , ( ) => { const sut = Checksum . fromBuffer ( Buffer . from ( "a" ) ) ; expect ( sut . toString ( ) ) . to . deep . equal ( "c1d04330" ) ; } ) ; } ) ; } ) ;