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Make Pages.Prev/Next work like the other Prev/Next methods

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Fixes #4500
This commit is contained in:
Bjørn Erik Pedersen
2019-10-11 11:09:43 +02:00
parent 7b3edc2931
commit f4f566edf4
4 changed files with 113 additions and 26 deletions
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30
resources/page/pages_prev_next_test.go
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@@ -38,18 +38,20 @@ func TestPrev(t *testing.T) {
t.Parallel()
c := qt.New(t)
pages := preparePageGroupTestPages(t)
c.Assert(pages[4], qt.Equals, pages.Prev(pages[0]))
c.Assert(pages[0], qt.Equals, pages.Prev(pages[1]))
c.Assert(pages[3], qt.Equals, pages.Prev(pages[4]))
c.Assert(pages.Prev(pages[3]), qt.Equals, pages[4])
c.Assert(pages.Prev(pages[1]), qt.Equals, pages[2])
c.Assert(pages.Prev(pages[4]), qt.IsNil)
}
func TestNext(t *testing.T) {
t.Parallel()
c := qt.New(t)
pages := preparePageGroupTestPages(t)
c.Assert(pages[1], qt.Equals, pages.Next(pages[0]))
c.Assert(pages[2], qt.Equals, pages.Next(pages[1]))
c.Assert(pages[0], qt.Equals, pages.Next(pages[4]))
c.Assert(pages.Next(pages[0]), qt.IsNil)
c.Assert(pages.Next(pages[1]), qt.Equals, pages[0])
c.Assert(pages.Next(pages[4]), qt.Equals, pages[3])
}
func prepareWeightedPagesPrevNext(t *testing.T) WeightedPages {
@@ -72,16 +74,20 @@ func TestWeightedPagesPrev(t *testing.T) {
t.Parallel()
c := qt.New(t)
w := prepareWeightedPagesPrevNext(t)
c.Assert(w[4].Page, qt.Equals, w.Prev(w[0].Page))
c.Assert(w[0].Page, qt.Equals, w.Prev(w[1].Page))
c.Assert(w[3].Page, qt.Equals, w.Prev(w[4].Page))
c.Assert(w.Prev(w[0].Page), qt.Equals, w[1].Page)
c.Assert(w.Prev(w[1].Page), qt.Equals, w[2].Page)
c.Assert(w.Prev(w[4].Page), qt.IsNil)
}
func TestWeightedPagesNext(t *testing.T) {
t.Parallel()
c := qt.New(t)
w := prepareWeightedPagesPrevNext(t)
c.Assert(w[1].Page, qt.Equals, w.Next(w[0].Page))
c.Assert(w[2].Page, qt.Equals, w.Next(w[1].Page))
c.Assert(w[0].Page, qt.Equals, w.Next(w[4].Page))
c.Assert(w.Next(w[0].Page), qt.IsNil)
c.Assert(w.Next(w[1].Page), qt.Equals, w[0].Page)
c.Assert(w.Next(w[4].Page), qt.Equals, w[3].Page)
}