def test_single_page_does_not_include_any_pagination_controls():
"""
When there is only a single page, no pagination controls should render.
"""
url = URL("/")
controls = get_page_controls(url, current_page=1, total_pages=1)
assert controls == []
def test_last_page_in_pagination_controls():
"""
Last page in pagination controls, should render as:
Previous 1 2 3 4 [5] Next
"""
url = URL("/?page=5")
controls = get_page_controls(url, current_page=5, total_pages=5)
assert controls == [
PageControl(text="Previous", url=URL("/?page=4")),
PageControl(text="1", url=URL("/")),
PageControl(text="2", url=URL("/?page=2")),
PageControl(text="3", url=URL("/?page=3")),
PageControl(text="4", url=URL("/?page=4")),
PageControl(text="5", url=URL("/?page=5"), is_active=True),
PageControl(text="Next", is_disabled=True),
]
def test_middle_page_in_pagination_controls():
"""
Middle page in pagination controls, should render as:
Previous 1 2 [3] 4 5 Next
"""
url = URL("/?page=3")
controls = get_page_controls(url, current_page=3, total_pages=5)
assert controls == [
PageControl(text="Previous", url=URL("/?page=2")),
PageControl(text="1", url=URL("/")),
PageControl(text="2", url=URL("/?page=2")),
PageControl(text="3", is_active=True, url=URL("/?page=3")),
PageControl(text="4", url=URL("/?page=4")),
PageControl(text="5", url=URL("/?page=5")),
PageControl(text="Next", url=URL("/?page=4")),
]
def test_second_page_in_pagination_controls():
"""
Second page in pagination controls, should render as:
Previous 1 [2] 3 4 5 Next
"""
url = URL("/")
controls = get_page_controls(url, current_page=2, total_pages=5)
assert controls == [
PageControl(text="Previous",
url=URL("/")), # No query parameter needed.
PageControl(text="1", url=URL("/")),
PageControl(text="2", is_active=True, url=URL("/?page=2")),
PageControl(text="3", url=URL("/?page=3")),
PageControl(text="4", url=URL("/?page=4")),
PageControl(text="5", url=URL("/?page=5")),
PageControl(text="Next", url=URL("/?page=3")),
]
def test_first_page_in_long_pagination_controls():
"""
First page in long pagination controls, should render as:
Previous [1] 2 3 4 5 ... 49 50 Next
"""
url = URL("/")
controls = get_page_controls(url, current_page=1, total_pages=50)
assert controls == [
PageControl(text="Previous", is_disabled=True),
PageControl(text="1", is_active=True, url=URL("/")),
PageControl(text="2", url=URL("/?page=2")),
PageControl(text="3", url=URL("/?page=3")),
PageControl(text="4", url=URL("/?page=4")),
PageControl(text="5", url=URL("/?page=5")),
PageControl(text="…", is_disabled=True),
PageControl(text="49", url=URL("/?page=49")),
PageControl(text="50", url=URL("/?page=50")),
PageControl(text="Next", url=URL("/?page=2")),
]
def test_last_page_in_long_pagination_controls():
"""
Last page in long pagination controls, should render as:
Previous 1 2 ... 46 47 48 49 [50] Next
"""
url = URL("/?page=50")
controls = get_page_controls(url, current_page=50, total_pages=50)
assert controls == [
PageControl(text="Previous", url=URL("/?page=49")),
PageControl(text="1", url=URL("/")),
PageControl(text="2", url=URL("/?page=2")),
PageControl(text="…", is_disabled=True),
PageControl(text="46", url=URL("/?page=46")),
PageControl(text="47", url=URL("/?page=47")),
PageControl(text="48", url=URL("/?page=48")),
PageControl(text="49", url=URL("/?page=49")),
PageControl(text="50", is_active=True, url=URL("/?page=50")),
PageControl(text="Next", is_disabled=True),
]
def test_ellipsis_fill_in():
"""
If an ellipsis marker can be replaced with a single page marker, then
we should do so.
"""
url = URL("/?page=6")
controls = get_page_controls(url, current_page=6, total_pages=11)
assert controls == [
PageControl(text="Previous", url=URL("/?page=5")),
PageControl(text="1", url=URL("/")),
PageControl(text="2", url=URL("/?page=2")),
PageControl(text="3", url=URL("/?page=3")), # Ellipsis fill-in case.
PageControl(text="4", url=URL("/?page=4")),
PageControl(text="5", url=URL("/?page=5")),
PageControl(text="6", url=URL("/?page=6"), is_active=True),
PageControl(text="7", url=URL("/?page=7")),
PageControl(text="8", url=URL("/?page=8")),
PageControl(text="9", url=URL("/?page=9")), # Ellipsis fill-in case.
PageControl(text="10", url=URL("/?page=10")),
PageControl(text="11", url=URL("/?page=11")),
PageControl(text="Next", url=URL("/?page=7")),
]