From 6d2c5d10fa44d7670b2a1be3a8a345132433de0a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kirill=20M=C3=BCller?= <kirill@cynkra.com>
Date: Thu, 9 Apr 2026 11:11:53 +0200
Subject: [PATCH 1/2] test: Add snapshot test for attributes

---
 tests/testthat/_snaps/attributes.md | 16 ++++++++++++++++
 tests/testthat/test-attributes.R    | 10 ++++++++++
 2 files changed, 26 insertions(+)

diff --git a/tests/testthat/_snaps/attributes.md b/tests/testthat/_snaps/attributes.md
index 172c445888a..98ec946572c 100644
--- a/tests/testthat/_snaps/attributes.md
+++ b/tests/testthat/_snaps/attributes.md
@@ -1,3 +1,19 @@
+# with_vertex_
+
+    Code
+      make_(from_literal(A - A:B:C, B - A:B:C), with_vertex_(color = 1:2))
+    Condition
+      Error in `.apply_modifiers()`:
+      ! Length of new attribute value must be 1 or 3, the number of target vertices, not 2.
+
+# with_edge_
+
+    Code
+      make_(from_literal(A - A:B:C, B - A:B:C), with_edge_(color = 1:2))
+    Condition
+      Error in `.apply_modifiers()`:
+      ! Length of new attribute value must be 1 or 3, the number of target edges, not 2.
+
 # error messages work
 
     Code
diff --git a/tests/testthat/test-attributes.R b/tests/testthat/test-attributes.R
index bf54e2ae311..3d614cc2455 100644
--- a/tests/testthat/test-attributes.R
+++ b/tests/testthat/test-attributes.R
@@ -379,6 +379,11 @@ test_that("with_vertex_", {
   expect_identical_graphs(g1, g2)
   expect_equal(V(g2)$color, rep("red", gorder(g2)))
   expect_equal(V(g2)$foo, paste0("xx", 1:3))
+
+  expect_snapshot(
+    make_(from_literal(A - A:B:C, B - A:B:C), with_vertex_(color = 1:2)),
+    error = TRUE
+  )
 })
 
 
@@ -398,6 +403,11 @@ test_that("with_edge_", {
   expect_identical_graphs(g1, g2)
   expect_equal(E(g1)$color, E(g2)$color)
   expect_equal(E(g1)$foo, E(g2)$foo)
+
+  expect_snapshot(
+    make_(from_literal(A - A:B:C, B - A:B:C), with_edge_(color = 1:2)),
+    error = TRUE
+  )
 })
 
 

From 9918c48fdf5917ef560cc4151a3050efd589282f Mon Sep 17 00:00:00 2001
From: krlmlr <krlmlr@users.noreply.github.com>
Date: Thu, 9 Apr 2026 09:19:52 +0000
Subject: [PATCH 2/2] chore: Auto-update from GitHub Actions

Run: https://github.com/igraph/rigraph/actions/runs/24182267776
---
 tests/testthat/_snaps/attributes.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/testthat/_snaps/attributes.md b/tests/testthat/_snaps/attributes.md
index 98ec946572c..aaf268a1752 100644
--- a/tests/testthat/_snaps/attributes.md
+++ b/tests/testthat/_snaps/attributes.md
@@ -3,7 +3,7 @@
     Code
       make_(from_literal(A - A:B:C, B - A:B:C), with_vertex_(color = 1:2))
     Condition
-      Error in `.apply_modifiers()`:
+      Error in `i_set_vertex_attr()`:
       ! Length of new attribute value must be 1 or 3, the number of target vertices, not 2.
 
 # with_edge_
@@ -11,7 +11,7 @@
     Code
       make_(from_literal(A - A:B:C, B - A:B:C), with_edge_(color = 1:2))
     Condition
-      Error in `.apply_modifiers()`:
+      Error in `i_set_edge_attr()`:
       ! Length of new attribute value must be 1 or 3, the number of target edges, not 2.
 
 # error messages work