import {isEq, isNear, isType, isMember} from "./test.ts";
export class Expect { o: any isNot: boolean constructor(o:any) { this.o = o this.isNot = false }
check(cond:boolean) { return (cond && !this.isNot) || (!cond && this.isNot) }
pass(f:(x:any)=>boolean) { let cond = f(this.o) if (this.check(cond)) return this throw Error('Expect.pass fail!') }
each(f:(x:any)=>boolean) { let o = this.o for (let k in o) { if (!f(o[k])) throw Error('Expect.each fail! key='+k) } }
any(f:any) { let o = this.o for (let k in o) { if (f(o[k])) return true } throw Error('Expect.any fail!') }
equal(o:any) { if (this.check(isEq(this.o, o))) return this throw Error('Expect.equal fail!') }
near(n:number, gap:number=0.001) { if (this.check(isNear(this.o, n, gap))) return this throw Error('Expect.near fail!') }
type(type:any) { if (this.check(isType(this.o, type))) return this throw Error('Expect.type fail!') }
a(type:any) { if (this.check(isType(this.o, type) || isEq(this.o, type))) return this throw Error('Expect.a fail!') }
contain(member:any) { let m = isMember(this.o, member) if (this.check(m != null)) { this.o = m; return this } throw Error('Expect.contain fail!') }
get not() { this.isNot = !this.isNot return this } get to() { return this } get but() { return this } get at() { return this } get of() { return this } get same() { return this } get does() { return this } get do() { return this } get still() { return this } get is() { return this } get be() { return this } get should() { return this } get has() { return this } get have() { return this } get been() { return this } get that() { return this }
get and() { return this }}
export function expect(o:any) { return new Expect(o)}