import { TestBed, waitForAsync, ComponentFixture } from "@angular/core/testing";

import { SamPaginationNextComponent } from "./pagination.component";
import { FormsModule } from "@angular/forms";

import { SamIconsModule } from "../../../ui-kit/experimental/icon/icon.module";

import { Paginator } from "./paginator";

describe("SamPaginationNextComponent", () => {
  let component: SamPaginationNextComponent;
  let fixture: ComponentFixture<SamPaginationNextComponent>;

  beforeEach(waitForAsync(() => {
    TestBed.configureTestingModule({
      declarations: [SamPaginationNextComponent],
      imports: [FormsModule, SamIconsModule],
    }).compileComponents();
  }));

  beforeEach(() => {
    fixture = TestBed.createComponent(SamPaginationNextComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
  });

  it("should create", () => {
    expect(component).toBeTruthy();
  });

  it("page size", () => {
    expect(component.pageSize).toBe(10);
  });

  it("next clicked", () => {
    const paginator = new Paginator("Test Unit", 10, 100);
    component.paginator = paginator;

    component.onNextClick();
    expect(component.currentPage).toBe(2);
  });

  it("previous clicked", () => {
    const paginator = new Paginator("Test Unit", 10, 100);
    component.paginator = paginator;
    component.onNextClick();
    component.onPreviousClick();
    expect(component.currentPage).toBe(1);
  });

  it("printDisplayingString", () => {
    const paginator = new Paginator("Test Unit", 10, 100);
    component.paginator = paginator;
    expect(component.printDisplayingString()).toBe("1 – 10 of 100");
  });

  it("printPerPageString", () => {
    const paginator = new Paginator("Test Unit", 10, 100);
    component.paginator = paginator;
    expect(component.printPerPageString()).toBe("Test Unit per page");
  });

  it("pageSize", () => {
    const paginator = new Paginator("Test Unit", 10, 100);
    component.paginator = paginator;
    component.pageSize = 20;
    expect(component.printDisplayingString()).toBe("1 – 20 of 100");
  });

  it("totalPages", () => {
    const paginator = new Paginator("Test Unit", 10, 100);
    component.paginator = paginator;
    expect(component.paginator.getTotalPages()).toBe(10);
  });
});