public void Cant_get_prev_page_when_on_first_page()
{
var pagger = new PaggerViewModel {Page = 1};
pagger.PreviousPage();
Assert.Equal(1, pagger.Page);
}
public void When_setting_new_total_current_page_is_not_bigger_then_max()
{
var pagger = new PaggerViewModel {PageSize = 100, Total = 1000, Page = 8};
pagger.Total = 100;
Assert.Equal(1, pagger.Page);
}
public void When_page_size_changes_reset_page_to_1()
{
var pagger = new PaggerViewModel {PageSize = 100, Total = 1000, Page = 8};
pagger.PageSize = 50;
Assert.Equal(1, pagger.Page);
}
public void Can_get_prev_page()
{
var pagger = new PaggerViewModel {TotalPages = 10, Page = 5};
pagger.PreviousPage();
Assert.Equal(4, pagger.Page);
}
public void Can_get_next_page()
{
var pagger = new PaggerViewModel {TotalPages = 10, Page = 5};
pagger.NextPage();
Assert.Equal(6, pagger.Page);
}
public void Cant_get_next_page_when_on_last_page()
{
var pagger = new PaggerViewModel {TotalPages = 10, Page = 10};
pagger.NextPage();
Assert.Equal(10, pagger.Page);
}
public void Calculates_number_of_total_pages_correctly()
{
var pagger = new PaggerViewModel {PageSize = 100, Total = 200};
Assert.Equal(2, pagger.TotalPages);
pagger.Total = 201;
Assert.Equal(3, pagger.TotalPages);
pagger.Total = 199;
Assert.Equal(2, pagger.TotalPages);
pagger.Total = 0;
Assert.Equal(1, pagger.TotalPages);
}
public void Cant_set_page_bigger_then_total_pages()
{
var pagger = new PaggerViewModel {PageSize = 100, Total = 1000, Page = 8};
pagger.Page = 100000000;
Assert.Equal(10, pagger.Page);
}
public void Calls_OnPageChanged_when_page_size_changes()
{
var pagger = new PaggerViewModel {PageSize = 100, Total = 1000, Page = 1};
var called = false;
pagger.OnPageChanged = () => called = true;
pagger.PageSize = 101;
Assert.True(called);
pagger.Page = 2;
called = false;
pagger.PageSize = 99;
Assert.True(called);
}