include snapshots

Author: teunbrand

tests/testthat/_snaps/layer.md

@@ -13,10 +13,12 @@
 ---
 
     `mapping` must be created by `aes()`.
+    x You've supplied an integer vector.
 
 ---
 
     `mapping` must be created by `aes()`.
+    x You've supplied a <ggplot2::ggplot> object.
     i Did you use `%>%` or `|>` instead of `+`?
 
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tests/testthat/_snaps/plot.md

@@ -1,6 +1,6 @@
 # ggplot() throws informative errors
 
-    `mapping` must be created with `aes()`.
+    `mapping` must be created by `aes()`.
     x You've supplied a character vector.
 
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