Created
February 24, 2023 18:16
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require "minitest/autorun" | |
require "minitest/spec" | |
class Pager | |
def initialize(total_rows:, rows_per_page:) | |
@total_rows = total_rows | |
@rows_per_page = rows_per_page | |
end | |
def total_pages | |
(@total_rows/@rows_per_page.to_f).ceil | |
end | |
end | |
describe Pager do | |
describe "#total_pages" do | |
it "rounds up to the next whole number" do | |
pager = Pager.new(total_rows: 33, rows_per_page: 10) | |
assert_equal pager.total_pages, 4 | |
end | |
it "returns 1 when there are less than rows_per_page" do | |
pager = Pager.new(total_rows: 3, rows_per_page: 10) | |
assert_equal pager.total_pages, 1 | |
end | |
it "returns 0 when there are 0 rows" do | |
pager = Pager.new(total_rows: 0, rows_per_page: 10) | |
assert_equal pager.total_pages, 0 | |
end | |
end | |
end |
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