Test groups

1 files changed, 43 insertions, 0 deletions

diff --git a/tests/typ/layout/locate-group.typ b/tests/typ/layout/locate-group.typ
new file mode 100644
index 00000000..49d4e335
--- /dev/null
+++ b/tests/typ/layout/locate-group.typ
@@ -0,0 +1,43 @@
+// Test locatable groups.
+
+---
+// Test counting.
+#let letters = group("\u{1F494}")
+#let counter = letters.entry(
+  (me, all) => [{1 + me.index} / {all.len()}]
+)
+
+#counter \
+#box(counter) \
+#counter \
+
+---
+// Test minimal citation engine with references before the document.
+#let cited = group("citations")
+#let num(cited, key) = {
+  let index = 0
+  for item in cited {
+    if item.value == key {
+      index = item.index
+      break
+    }
+  }
+  [\[{index + 1}\]]
+}
+
+#let cite(key) = cited.entry(value: key, (_, all) => num(all, key))
+{cited.all(all => grid(
+  columns: (auto, 1fr),
+  gutter: 5pt,
+  ..{
+    let seen = ()
+    for item in all {
+      if item.value not in seen {
+        seen.push(item.value)
+        (num(all, item.value), item.value)
+      }
+    }
+  }
+))}
+
+As shown in #cite("abc") and #cite("def") and #cite("abc") ...