hugolib: Add some integration tests for in/uniq using Pages

See #5875
See #5852

diff --git a/hugolib/collections_test.go b/hugolib/collections_test.go
index b7e89eec9bbcb40cfffbd8c1149ab503c62e7754..41681bc7394db1d3d306ea0a8485d70101ece0f7 100644 (file)
--- a/hugolib/collections_test.go
+++ b/hugolib/collections_test.go
@@ -118,6 +118,42 @@ tags_weight: %d
                "unionWeightedPages: page.WeightedPages 6")
 }
 
+func TestCollectionsFuncs(t *testing.T) {
+       assert := require.New(t)
+
+       pageContent := `
+---
+title: "Page"
+tags: ["blue", "green"]
+tags_weight: %d
+---
+
+`
+       b := newTestSitesBuilder(t)
+       b.WithSimpleConfigFile().
+               WithContent("page1.md", fmt.Sprintf(pageContent, 10), "page2.md", fmt.Sprintf(pageContent, 20),
+                       "page3.md", fmt.Sprintf(pageContent, 30)).
+               WithTemplatesAdded("index.html", `
+{{ $uniqPages := first 2 .Site.RegularPages | append .Site.RegularPages | uniq  }}
+{{ $inTrue := in .Site.RegularPages (index .Site.RegularPages 1)  }}
+{{ $inFalse := in .Site.RegularPages (.Site.Home)  }}
+
+{{ printf "uniqPages: %T %d" $uniqPages (len $uniqPages) }}
+{{ printf "inTrue: %t" $inTrue }}
+{{ printf "inFalse: %t" $inFalse  }}
+`)
+       b.CreateSites().Build(BuildCfg{})
+
+       assert.Equal(1, len(b.H.Sites))
+       require.Len(t, b.H.Sites[0].RegularPages(), 3)
+
+       b.AssertFileContent("public/index.html",
+               "uniqPages: page.Pages 3",
+               "inTrue: true",
+               "inFalse: false",
+       )
+}
+
 func TestAppendFunc(t *testing.T) {
        assert := require.New(t)